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MFC wcslen获取中文长度

Fri, 10 Oct 2014 03:53:00 GMT

不知道大家有没有我这�U�体�?大家先看看下面这�D�代�?

int fp=_wopen(L"Hello.dat",O_BINARY | O_CREAT | O_TRUNC | O_RDWR);
if(fp==-1) return;
write(fp,L"123中国�?,wcslen(L"123中国�?));
close(fp);

上面�q�段代码不知道大家看��Z��么BUG来了.如果大家看不出毛病也不��为�?因�ؓ�q�是我们的习惯导致了我们的错误��?

先让我来分析一下write�?下面是write的原�?
int write( int handle, const void *buffer, unsigned int count );
参数:
handle 已打开或已创徏的文件句�?/span>
buffer 待写入的数据
count 待写入的数据大小
现在分析��Z��么上面的那代码有bug,其实主要问题��在一个buffer,和count.
如果我们写入一个Ansi字符�?上面的代码改成相应的形式��实没有�?
但如果是写入一个宽字符�?那么上面的代码就不严�?原因��在于count.

我们首先看一下strlen�?/span>wcslen,如果使用strlen,一般情况下,我们直接作�ؓ字符串的长度,
而��?/span>wcslen,你会发现,得出的不是字�W�串的长度而是字符的个�?

�q�就是问题的所�?一般情况下.char的长度是1,�q�是用sizeof(char)�q�算出来的结�?
len=strlen(str)*sizeof(char);而我们一般情况下,都只用strlen(str)来等�?�q�就是��^时的习惯.
正是�׃��q�个习惯所引来的问�?�q�个习惯�q�不适用于宽字符�?因�ؓwcslen(str)*sizeof(wchar_t)�q�不�{�于wcslen(strl).�q�就是习惯所引�v的错�?

说到�q�里我想大家都明白了.我在�q�里把这�U�习惯称之�ؓ不良习惯.所以大家以后在计算字符串长度的时�?千万不能��而简�?一定要len=strlen(str)*sizeof(char),len=wcslen(str)*sizeof(wchar_t).
不要再犯�q�种习惯性的低��错误.

本文转自�Q?a >http://blog.csdn.net/aylixuan/article/details/6130820

王�v�?/a> 2014-10-10 11:53 发表评论

MFC讄��鼠标滑轮响应

Thu, 08 May 2014 08:33:00 GMT

鼠标滚轮消息��g��只会发给当前获得焦点的窗口，所以当子窗体没有焦�Ҏ��是收不到滚轮消息的，收到消息的可能是父窗口�?/p>

解决�Q�添加鼠标单�ȝ��应函敎ͼ�在响应函��C��d��SetFoucs();一句，�q�样强制讄��焦点�l�子�H�口�Q�然后再滚动鼠标滚轮�Q�子�H�体��p��收到滚轮消息了�?/p>

问题�l�箋�Q�当子窗口上有其他可以获得焦点的控�g�Ӟ��比如下拉列表�Q�这时在�H�口函数中执行SetFoucs();焦点会自动跑到那个控件上去，子窗口同��h��不到滚轮消息�?/p>

解决�Q�在执行SetFoucs();语句前先Disable子窗体上的所有控�Ӟ��然后执行SetFoucs();�Q�再Enanle所有控�Ӟ��q�时焦点才会在子�H�口上�?br />
本文转自�Q?a style="font-family: verdana, 'courier new'; font-size: 14px; line-height: 21.111112594604492px;">http://blog.csdn.net/vanship/article/details/4119246

王�v�?/a> 2014-05-08 16:33 发表评论

MFC 多文档界面禁用关闭、最大化按钮

Tue, 25 Mar 2014 10:37:00 GMT

��用关闭按钮

�?WM_CREATE 消息处理�E�序中的 MDI 子框架窗�?�Q�CMDIChildWnd �z��c�） ��用在关闭按钮��用下面的代码�Q?/p>

CMenu *pSysMenu = GetSystemMenu(FALSE); 
ASSERT(pSysMenu != NULL); 
VERIFY(pSysMenu->RemoveMenu(SC_CLOSE, MF_BYCOMMAND));

此时的最大、最���化�?span style="font-family: Arial, Helvetica, sans-serif; font-size: 14px; line-height: 22px; white-space: normal;">�q�原按钮也消�׃��见。通过�?/span>PreCreateWindow函数中修�Ҏ��实现昄���最大、最���化�?/span>�q�原按钮�?/span>
cs.style += WS_MINIMIZEBOX|WS_SIZEBOX;

王�v�?/a> 2014-03-25 18:37 发表评论

MFC 子对话框与父视图传递自定义消息

Fri, 07 Mar 2014 07:01:00 GMT

视图�c�调用非模态对话时�Q�如何销毁分配的内存

��要步骤：
1�?/span>视图�c�d��调用非模态对话框�Ӟ��自�w�的指针传递给非模态对话框�?/span>
2�?/span>当非模态对话框�l�束�Ӟ��向视囄��发送自定义消息�Q�由自定义消息处理函数来释放内存�?/span>

具体代码步骤�Q?/strong>
1�?/span>定义自定义消�?nbsp; #define WM_RELEASEPLAYSOUNDDC (WM_USER+1001)
2�?/span>修改非模态对话框�cȝ��构造函敎ͼ�便于��视图指针传递进厅R�?/span>

非模态对话框.h文�g�?/span>

class CTestDialog : public CDialog
{
    DECLARE_DYNAMIC(CPlaySound)

public:
    //CTestDialog (CWnd* pParent = NULL);   // standard constructor
    CTestDialog (CView* pParent);   // standard constructor
    virtual ~CTestDialog ();
    CView *pView;

// Dialog Data
    enum { IDD = IDD_TEST_DIALOG };

protected:
    virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support

    DECLARE_MESSAGE_MAP()
public:
    virtual BOOL OnInitDialog();
    afx_msg LRESULT OnNcHitTest(CPoint point);

};

非模态对话框.cpp文�g�?/span>
IMPLEMENT_DYNAMIC(CTestDialog, CDialog)
//CTestDialog::CTestDialog(CWnd* pParent /*=NULL*/)
CTestDialog::CTestDialog(CView* pParent)
    : CDialog(CTestDialog::IDD, pParent)
{
    pView = pParent;
}

3、在非模态对话框�l�束的时候发送自定义消息
void CTestDialog::OnBnClickedBtnClose()
{
    // TODO: Add your control notification handler code here
    pView->PostMessage(WM_RELEASEPLAYSOUNDDC, 0, 0);
    OnOK();
}

4、在视图�c?/span>.h文�g中，增加定义�Q?/span>
afx_msg LRESULT OnReleaseDialog(WPARAM wparam,LPARAM lparam);

5、在视图�c?/span>.cpp文�g中，增加消息映射部分�Q?/span>
ON_MESSAGE(WM_DIALOGOK,OnDialogOk)

6、在视图�c?/span>.cpp文�g�?/span>定义消息处理函数的实玎ͼ�
LRESULT CTestView::OnReleaseDialog(WPARAM wparam,LPARAM lparam)
{
    if (m_pPlaySound != NULL)
    {
        delete m_pPlaySound;
        m_pPlaySound = NULL;
    }

    return 0;
}

王�v�?/a> 2014-03-07 15:01 发表评论

MFC BMP文�g转JPEG文�g

Thu, 09 Jan 2014 06:30:00 GMT

2.在你��要使用GDI+的工�E�中�Q�完成初始化工作�Q?br />�?/span>StdAfx.h中加�?/span>
#define ULONG_PTR unsigned long
#include <Gdiplus.h>
using namespace Gdiplus;
3.�?/span>CXApp头文件中加入
ULONG_PTR        m_gdiplusToken;
4.�?BOOL CXApp::InitInstance() 中添�?/span>
GdiplusStartupInput     m_gdiplusStartupInput;
GdiplusStartup(&m_gdiplusToken, &m_gdiplusStartupInput, NULL);
5.�?/span>int CXApp::ExitInstance()加入(�q�个�Ҏ��需要自己加�?在ClassWizard 中，注意在ClassName中选择CXApp,Messages列表框中选择ExitInstance)
Gdiplus::GdiplusShutdown(m_gdiplusToken);
6.在Project->stting->Link->Intput->Additional Dependencies中加�?/span>gdiplus.lib
此时GDI+讄��成功�?br />
具体代码如下�Q?br />
int GetEncoderClsid(const WCHAR* format, CLSID* pClsid)
{
UINT num = 0; // number of image encoders
UINT size = 0; // size of the image encoder array in bytes
ImageCodecInfo* pImageCodecInfo = NULL;
GetImageEncodersSize(&num, &size);
if(size == 0)
return -1; // Failure
pImageCodecInfo = (ImageCodecInfo*)(malloc(size));
if(pImageCodecInfo == NULL)
return -1; // Failure
GetImageEncoders(num, size, pImageCodecInfo);
for(UINT j = 0; j < num; ++j)
{
if( wcscmp(pImageCodecInfo[j].MimeType, format) == 0 )
{
*pClsid = pImageCodecInfo[j].Clsid;
free(pImageCodecInfo);
return j; // Success
}
}
free(pImageCodecInfo);
return -1; // Failure
}
void SaveFile(Bitmap* pImage, const wchar_t* pFileName)
{
EncoderParameters encoderParameters;
CLSID jpgClsid;
GetEncoderClsid(L"image/jpeg", &jpgClsid);
encoderParameters.Count = 1;
encoderParameters.Parameter[0].Guid = EncoderQuality;
encoderParameters.Parameter[0].Type = EncoderParameterValueTypeLong;
encoderParameters.Parameter[0].NumberOfValues = 1;
// Save the image as a JPEG with quality level 100.
ULONG quality;
quality = 100;
encoderParameters.Parameter[0].Value = &quality;
Status status = pImage->Save(pFileName, &jpgClsid, &encoderParameters);
if (status != Ok)
{
wprintf(L"%d Attempt to save %s failed./n", status, pFileName);
}
}

//调用方式�Q?/span>
Bitmap newbitmap(L"d://d.bmp");//加蝲BMP
const wchar_t *pFileName=L"d://new.jpg";//保存路径
SaveFile(&newbitmap,pFileName );

本文转自�Q?/span>http://blog.csdn.net/highyyy/article/details/6125763

王�v�?/a> 2014-01-09 14:30 发表评论

Fri, 13 Dec 2013 02:28:00 GMT
一、修�Ҏ��?/strong>
�Ҏ��1�Q?/span>在CMainFrame�?/span>PreCreateWindow(CREATESTRUCT& cs)�q�行更改�Q�如下：
BOOL CKTLXSubjectShowFrame::PreCreateWindow(CREATESTRUCT& cs)
{
    // TODO: Add your specialized code here and/or call the base class
    cs.style &=~WS_MAXIMIZEBOX;//��用最大化按钮
    cs.style &=~WS_SIZEBOX;
    cs.style &=~FWS_ADDTOTITLE;

    cs.lpszName = _T("��试标题");
    cs.cx = 970;
    cs.cy = 650;
    return CXTPFrameWnd::PreCreateWindow(cs);
}

�Ҏ��2�Q�在doc�c�M��OnNewDocument函数修改�Q�添加修改的标题�Q�如下：
BOOL CKTLXSubjectShowDoc::OnNewDocument()
{
    if (!CDocument::OnNewDocument())
        return FALSE;

    SetTitle(_T("��试标题"));

    return TRUE;
}

二�?/span>修改标题后半部分
单文档标题通常会有两部分组成，例如�Q?/span>标题名称—工程名称�Q?/span>修改StringTable的IDR_MAINFRAME的标题，��第一个\n之前的字�W�串替换�?/span>
标题\n\nTestSingleTitle\n\n\nTestSingleTitle.Document\nTestSingleTitle.Document
三、去掉标题的后半部分
�Ҏ��1�Q?/span>在CTestSingleTitleApp::InitInstance()中调用如下语�?/span>m_pMainWnd->SetWindowText(_T("标题"));或在其他地方�?span lang="EN-US" style="font-size: 12pt;">(AfxGetMainWnd())->SetWindowText(_T("标题"));也可以得到相同的�l�果�?/span>
　
�Ҏ��2�Q?/span>可以通过利用CWnd::SetWindowText卻I��void SetWindowText( LPCTSTR　lpszString );重蝲CFramWnd�cȝ��OnUpdateFrameTitle函数
void CMainFrame::OnUpdateFrameTitle(BOOL bAddToTitle)
{
    // TODO: 在此��d��专用代码�?或调用基�c�R��
    SetWindowText(_T("标题"));
    CFrameWnd::OnUpdateFrameTitle(bAddToTitle);
}
�Ҏ��3�Q�在CMainFrame�?span lang="EN-US" style="color: #0000ff; font-size: 12pt;">PreCreateWindow函数中修改窗口风��|��
BOOL CMainFrame::PreCreateWindow(CREATESTRUCT& cs)
{
          cs.style &= ~(LONG) FWS_ADDTOTITLE;
          return CFrameWnd::PreCreateWindow(cs);
}

王�v�?/a> 2013-12-13 10:28 发表评论

Thu, 05 Dec 2013 02:58:00 GMT
�?/span>PreTranslateMessage(MSG* pMsg)中调用DoModal()模态窗口如下：

1 BOOL CMainDlg::PreTranslateMessage(MSG* pMsg)
2 {
3     // TODO: Add your specialized code here and/or call the base class
4     if ( pMsg->message == WM_LBUTTONDOWN)
5     {
6         GetWindowRect(m_oldRect);
7         ::SetCapture(this->m_hWnd);
8         m_bCanDrag = TRUE;
9         m_lastPt = pMsg->pt ;
10     }
11     else if ( pMsg->message == WM_LBUTTONUP)
12     {
13         if( m_bCanDrag )
14         {
15             ::ReleaseCapture();
16             m_bCanDrag = FALSE;
17             GetWindowRect(m_newRect);
18             if (m_oldRect.EqualRect(m_newRect))
19             {
20                 GetMainItemID(pMsg);//调用对话框函�?/span>
21 //return TRUE;
22             }
23         }
24     }
25     else if( pMsg->message == WM_MOUSEMOVE)
26     {
27         if( m_bCanDrag )
28         {
29             CRect rc;
30             GetWindowRect(&rc);
31             rc.OffsetRect( pMsg->pt.x - m_lastPt.x , pMsg->pt.y - m_lastPt.y  ) ;
32             m_lastPt = pMsg->pt;
33             this->MoveWindow( rc );
34         }
35     }
36
37     return CDialog::PreTranslateMessage(pMsg);
38 }

39  void CMainDlg::GetMainItemID(MSG* pMsg)
40 {
41     if (pMsg->hwnd == GetDlgItem( IDC_BTN_MYCOMPUTER )->m_hWnd)
42     {
43        CTestDlg dlg;
44        dlg.DoModal();
45     }
46 }

再单��d��话框上的按钮时发送断�a�中断�Q�具体位�|�如下：

::IsWindow(m_hWnd)

函数功能�Q�该函数��定�l�定�?a target="_blank" style="text-decoration: none; color: #136ec2;">�H�口句柄是否标识一个已存在的窗口�?/div>
函数原型�Q�BOOL IsWindow�Q�HWND hWnd�Q�；
参数�Q?/div>
hWnd:被测试窗口的句柄�?/div>
�q�回��|��如果�H�口句柄标识了一个已存在的窗口，�q�回��gؓ非零�Q�如果窗口句柄未标识一个已存在�H�口�Q�返回��gؓ零�?/div>
可能原因�Q?/span>在PreTranslateMessage里的获取对应m_hWnd�Q?/span>DoModal()模态对话框退出后�Q?/span>m_hWnd不是有效的窗口句柄�?/span>
解决办法�Q?/span>处理�?/span>WM_LBUTTONUP后，需要返回TRUE�?/span>

王�v�?/a> 2013-12-05 10:58 发表评论

Tue, 19 Nov 2013 00:54:00 GMT

FTP Wanderer - FTP Client using WININET
Download executable - 105 Kb
Download source - 152 Kb
Description
This article presents a fully functional implementation of a FTP client. FTP Wanderer is a multithreaded FTP client with the look-and-feel of Windows Explorer, and makes moving files between the Internet and your computer as simple as local file manipulation. This application uses WININET API's to handle the FTP protocol, and while it's not the most elegant way to connect to a FTP server it does the job pretty well.
Features list
All file transfer requests are handled in the background, so you don't have to wait while files copy to continue browsing the current server. You can even connect to a different server, while file transfers on another server are still in progress.
The Transfer Manager shows all file transfers currently in progress plus the ones that are in the queue. You can configure how many transfers are processed simultaneously, so you don't run out of resources.
FTP Wanderer uses the Windows 9x/NT/XP style list boxes for displaying the contents of remote servers. With all familiar system icons and context menus.
You can specify the number of times it should try to connect, and the time delay between connection attempts.
Full Drag and Drop support. Simply drag one or more files or even complete folders onto FTP Wanderer's file view area to transfer them to the location of the server that is currently connected.
Easily configure FTP site settings, like username, password, port, initial remote folder, number of retries and default download folder.
Here's a brief description of some of the important classes of the application:
CMainFrame
CMainFrame contains most of the code for managing the FTP connection. It takes care of connecting to the server; initiate up/downloads and handling other FTP related actions.
CFTPListView
This is just a CListView derived class that takes care of displaying the files and enabling you to sort them. When the application is busy downloading or sorting a directory listing it can display an animation, just like explorer does.
CConnectDlg
This class (= Site Manager) enables the user to manage FTP sites. You can add/change and delete sites and configure properties such as hostname, port, username and password. The settings of each site are save to disk using serializing.
CTransferManagerDlg
CTransferManagerDlg (= Transfer manager) takes care of queuing the file transfers. It shows all file transfers currently in progress plus the ones that are in the queue. You can configure how many transfers are processed simultaneously, so you don't run out of resources. Each up/download in handled in a separate thread by initiating aCDownloadThread or CUploadThread thread.
CDownloadThread
Each download is handled in the background using a separate thread. CDownloadThread creates a new connection with the FTP server and displays a progress dialog that tells you the status of the file transfer. When the download is completed (or aborted) it notifies the transfer manager so the UI can be updated.
CUploadThread
Each upload is handled in the background using a separate thread. CUploadThread creates a new connection with the FTP server and displays a progress dialog that tells you the status of the file transfer. When the upload is completed (or aborted) it notifies the transfer manager so the UI can be updated.
To do list:
While this application has most of the features you might expect in a FTP client, there are a few things left to do:
Drag and drop support out of the file view area to Explorer. I think this one is not that easy, because this would probably 'block' explorer until the file transfer is completed (any suggestions?).
Progress indication in the transfer manager. This is not really that hard to do, so this will probably be in the next release.
Better asynchrony handling of getting directory listing. The UI now does not respond when downloading a huge directory listing.
Contacting the Author
Please send any comments or bug reports to me via email. For any updates to this article, check my site here.
Revision history
31st July 2002 - Initial revision.
License
This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.
A list of licenses authors might use can be found here

原文地址�Q?a >http://www.codeproject.com/Articles/2665/FTP-Wanderer-FTP-Client-using-WININET

王�v�?/a> 2013-11-19 08:54 发表评论

MFC COMBOX控�g只接受数字和讄��数字范围

Wed, 25 Sep 2013 09:39:00 GMT

在MFC开发过�E�中使用ComboBox�Q�有时会�Ҏ��需求要求只能输入数字，�q�且要求数字在一定的范围内，例如一个用于选择��时的ComboBox�Q�时间范围�ؓ00�?3�Q�那么该如何实现�Q?/span>
代码如下�Q?/span>
在Dialog.h中：
……
CComboBox m_cbHour;// 声明CComboBox�c�d��作�ؓCDialog�cȝ��成员变量
……
afx_msg void OnCbnEditchangeCbHour();
afx_msg void OnCbnEditupdateCbHour();
在Dialog.cpp中：
……
DDX_Control(pDX, IDC_CB_HOUR, m_cbHour);// 数据交换
……
ON_CBN_EDITCHANGE(IDC_CB_HOUR, &CDialog::OnCbnEditchangeCbHour)//��d��消息映射�Q�用于CComboBox内容改变�?nbsp;
ON_CBN_EDITUPDATE(IDC_CB_HOUR, &CCDialog::OnCbnEditupdateCbHour)//��d��消息映射�Q�用于CComboBox内容更新
……
下面来具体实现函敎ͼ�

循环遍历CComboBox中已�l�输入的字符如果发现含有非数字则�Q�置�?#8220;00”�Q��用��@环的目的是�ؓ了防止用戯��着输（大概只有��试人员才会跳着输）�?br />��for循环改�ؓfor (int i = 0; i < (strTmp.GetLength()); i++)遇到非数字字�W�就讄��?0�Q?/span>

当CComboBox更新数据时判断数字范��_��如果��过边界�Q�则讄��gؓ最�q�边界��|��x��一个只接受可控范围数字的CComboBox��完成了�Q�但是在WinCE开发中却有一个问题，��是所有的汉字都输不进去，但是“�?#8221;�q�个汉字却能输入�Q�不知道�q�是不是一个BUG�Q�如果在代码中对“�?#8221;做特别判断，那这�D늨�序也太奇怪了�Q?br />
本文转自�Q?/span>http://blog.csdn.net/wyunteng/article/details/6370882

王�v�?/a> 2013-09-25 17:39 发表评论

MFC解决讄��控�g内容文字重叠问题

Tue, 24 Sep 2013 02:31:00 GMT
在用SetWindowText讄��控�g内容�Ӟ��有时候会出字体重叠问题，调用�ơ数��多�Q�重叠越严重。以下�ؓ解决�Ҏ��?br />
�Ҏ��一�Q?/span>RedrawWindow()
1 GetDlgItem(IDC_STATIC)->SetWindowText("your string");
2 GetDlgItem(IDC_STATIC)->GetParent()->RedrawWindow();

�~�点�Q?/span>�H�口��h��太频�J�，一闪一闪，效果不太好�?br />
�Ҏ��二：局部刷�?/span>
1 void YourDlg::RefreshControl(UINT uCtlID)
2 {
3     CRect   rc;
4     GetDlgItem(uCtlID)->GetWindowRect(&rc);
5     ScreenToClient(&rc);
6     InvalidateRect(rc);
7 }

�Ҏ��三：隐藏和显�C?/span>
1 GetDlgItem(IDC_STATIC)->ShowWindow(SW_HIDE);
2 GetDlgItem(IDC_STATIC)->ShowWindow(SW_SHOW);

王�v�?/a> 2013-09-24 10:31 发表评论

判断文�gCFile已经打开

Mon, 23 Sep 2013 08:46:00 GMT
�Ҏ��一�Q?br />
CFile�cȝ��成员变量�Q?/span>

m_hFile�Q�表�C�Z��个打开文�g的操作系�l�文件句柄。通过�?/span>m_hFile �?/span> CFile::hFileNull的比较来判断该文件是否已�l�打开�?br />
�C�Z��代码�Q?br />
1   CString strFilename = _T("D:\\大学语文.docx");
2     CFile file;
3     file.Open(strFilename,CFile::modeReadWrite);//
4
6     if (file.m_hFile != CFile::hFileNull)
7     {
8         file.Close();
9     }
10     else
11     {
12         printf("File Already Close \n");
13     }

�Ҏ��二：
利用file.GetFileName().IsEmpty()来判�?br />
�C�Z��代码�Q?/span>
1     CString strFilename = _T("D:\\大学语文.docx");
2     CFile file;
3     file.Open(strFilename,CFile::modeReadWrite);//
4
5     if (!file.GetFileName().IsEmpty())
6     {
7         file.Close();
8     }
9     else
10     {
11         printf("File Already Close \n");
12     }

�Ҏ��三：

通过讄��成员变量来记录文件是否被打开。如BOOL bIsFileOpen;默认�?/span>FALSE,
打开成功�Q�把它置�?/span>TRUE;否则�|��ؓFALSE;
然后在程序里面判断就可以了。关闭后�|?/span>bIsFileOpen�?/span>FALSE,

王�v�?/a> 2013-09-23 16:46 发表评论

Fri, 13 Sep 2013 00:31:00 GMT
一�U�方法：解决�Ҏ��是在CDialog::PreTranslateMessage() 的重载函��C��ESC和回车按键的消息处理�?

BOOL CYourDlg::PreTranslateMessage(MSG* pMsg)
{
    if(pMsg->message==WM_KEYDOWN&&pMsg->wParam==VK_RETURN)
        return TRUE;
    if(pMsg->message==WM_KEYDOWN&&pMsg->wParam==VK_ESCAPE)
        return TRUE;
    return CDialog::PreTranslateMessage(pMsg);
}

另一�U�方法：一开始的cancel按扭不要��L��Q�双��d��q�入命��oOnCancel(), 把OnCancel()��L��
直接�q�回�Q�这��没问题�?/span>

如果你已�l�把按钮删掉�Q�那��得手工加这个命令，但效果一�?/span>

王�v�?/a> 2013-09-13 08:31 发表评论

MFC获取�pȝ��当前旉��

Thu, 22 Aug 2013 09:36:00 GMT

1.使用CTime�c?　　
CString str; //获取�pȝ��旉�� 　　
CTime tm; tm=CTime::GetCurrentTime(); 　　
str=tm.Format("现在旉��?Y�q?m�?d�?%X");
MessageBox(str,NULL,MB_OK); 2: 得到�pȝ��旉��日期(使用GetLocalTime) 　　
SYSTEMTIME st; 　　
CString strDate,strTime; 　　
GetLocalTime(&st); 　　
strDate.Format("%4d-%2d-%2d",st.wYear,st.wMonth,st.wDay); 　　
strTime.Format("%2d:%2d:%2d",st.wHour,st.wMinute,st.wSecond);

3.使用GetTickCount//获取�E�序�q�行旉�� 　　
long t1=GetTickCount();//�E�序�D�开始前取得�pȝ��q�行旉��(ms) 　　
Sleep(500); long t2=GetTickCount();//�E�序�D늻�束后取得�pȝ��q�行旉��(ms) 　　
str.Format("time:%dms",t2-t1);//前后之差�?�E�序�q�行旉�� 　　
AfxMessageBox(str);//获取�pȝ��q�行旉�� 　　
long t=GetTickCount(); 　　
CString str,str1; 　　
str1.Format("�pȝ��已运�?%d�?,t/3600000); 　　
str=str1; t%=3600000; 　　
str1.Format("%d�?,t/60000); 　　
str+=str1; t%=60000; 　　
str1.Format("%d�U?,t/1000); 　　
str+=str1; AfxMessageBox(str);

本文转自�Q?a style="font-family: verdana, 'courier new'; line-height: 21px;">http://www.cnblogs.com/bigbigtree/archive/2011/12/02/2272066.html

王�v�?/a> 2013-08-22 17:36 发表评论

Word、RichEdit文本转RTF文�g�Q�RTF文�g转HTML

Wed, 21 Aug 2013 00:53:00 GMT
1、RichEdit文本转RTF文�g

static DWORD CALLBACK MyStreamOutCallback(DWORD dwCookie, LPBYTE pbBuff, LONG cb, LONG *pcb)
{
    CFile* pFile = (CFile*) dwCookie;
    pFile->Write(pbBuff, cb);
    *pcb = cb;
    return 0;
}

void CKTLXFunction::OnBnClickedIssuePaper()
{
    // TODO: Add your control notification handler code here
    CString sText;
    m_richEdit.GetWindowText(sText);
    if (sText.IsEmpty() && m_sImportPaperPath.IsEmpty())
    {
        AfxMessageBox("内容为空");
        return;
    }

    CString sImportRtfPath = CCommonFun::GetExecutablePath() + "temp.rtf";
    if (CFileFind().FindFile(sImportRtfPath))
    {
        ::DeleteFile(sImportRtfPath);
    }

    CFile cFile(TEXT(sImportRtfPath), CFile::modeCreate|CFile::modeWrite);
    EDITSTREAM es;
    es.dwCookie = (DWORD) &cFile; //讄��用例参数,以便回调函数调用
    es.pfnCallback = MyStreamOutCallback;
    m_richEdit.StreamOut(SF_RTF, es);
}

2、word文本转RTF文�g

CString m_sImportRtfPath = CCommonFun::GetExecutablePath() + "temp.rtf";
    if (CFileFind().FindFile(m_sImportRtfPath))
    {
        ::DeleteFile(m_sImportRtfPath);
    }

    _Application WordApp;
    CoInitialize(NULL);
    if(!WordApp.CreateDispatch("Word.Application",NULL))
    {
        LOG("创徏Word服务��p�|!");
        exit(1);
        return FALSE;
    }
    WordApp.SetVisible(FALSE);

    COleVariant vTrue((short)TRUE),vFalse((short)FALSE),vOpt((long)DISP_E_PARAMNOTFOUND, VT_ERROR);

    Documents docs=WordApp.GetDocuments();
    docs.Open(COleVariant("word文�g路径"), vFalse, vFalse, vFalse, COleVariant(""),
              COleVariant(""), vFalse, COleVariant(""), COleVariant(""),
              COleVariant((short)0),COleVariant("UTF-8") ,vTrue, vFalse,
              COleVariant((short)0), vFalse, COleVariant(""));

    _Document active_doc;
    active_doc = WordApp.GetActiveDocument();

    active_doc.SaveAs(COleVariant(m_sImportRtfPath), COleVariant((short)wdFormatRTF), vFalse,
              COleVariant(""),vFalse, COleVariant(""), vFalse, vTrue, vFalse, vFalse,
              vFalse,COleVariant("936"), vFalse, vFalse, COleVariant((short)0), vFalse);

    WordApp.Quit(vOpt, vOpt, vOpt);
active_doc.ReleaseDispatch();
docs.ReleaseDispatch();
WordApp.ReleaseDispatch(); //释放对象指针。切讎ͼ�必须调用

3、RTF文�g转html文�g

  // 保存html文�g [8/12/2013 dell]
    _Application WordApp;
    CoInitialize(NULL);
    if(!WordApp.CreateDispatch("Word.Application",NULL))
    {
        //AfxMessageBox("创徏Word服务��p�|!");
        exit(1);
        return FALSE;
    }
    WordApp.SetVisible(FALSE);

    COleVariant vTrue((short)TRUE),vFalse((short)FALSE),vOpt((long)DISP_E_PARAMNOTFOUND, VT_ERROR);
CString m_sImportRtfPath = CCommonFun::GetExecutablePath() + "temp.rtf";
    if (!CFileFind().FindFile(m_sImportRtfPath))
    {
        LOG("转换html文�g��p�|�Q�没有找到rtf文�g �Q?nbsp;%s", m_sImportRtfPath);
        return FALSE;
    }
    Documents docs=WordApp.GetDocuments();
    docs.Open(COleVariant(m_sImportRtfPath),
        vFalse,vFalse,vFalse,COleVariant(""),COleVariant(""),
        vFalse,COleVariant(""),COleVariant(""),
        COleVariant((short)0),COleVariant("UTF-8")
        ,vTrue,vFalse,COleVariant((short)0),vFalse,
        COleVariant(""));

    _Document active_doc;
    active_doc = WordApp.GetActiveDocument();

    active_doc.SaveAs(COleVariant("保存html文�g路径"),
        COleVariant((short)wdFormatHTML),
        vFalse, COleVariant(""),vFalse, COleVariant(""),
        vFalse,vTrue,vFalse,vFalse,vFalse,COleVariant("936"),//COleVariant(L"UTF-8")
        vFalse,vFalse,COleVariant((short)0),vFalse);

    WordApp.Quit(vOpt, vOpt, vOpt);
active_doc.ReleaseDispatch();
docs.ReleaseDispatch();
WordApp.ReleaseDispatch(); //释放对象指针。切讎ͼ�必须调用

王�v�?/a> 2013-08-21 08:53 发表评论

Richedit使用大全

Wed, 21 Aug 2013 00:42:00 GMT
     摘要: 一.常见问题 a.可以�~�译,不能执行�? AfxInitRichEdit(); b.升��默认的Riched版本(默认的有一些bug)�Q�如可在InitInstance中添�? LoadLibrary("RICHED20.DLL") 最后注�? FreeLibrary 如果是CRichEditView基类的可�? BOOL ...  阅读全文

王�v�?/a> 2013-08-21 08:42 发表评论

MFC讄��控�g背景透明

Sun, 18 Aug 2013 08:54:00 GMT

��d��消息响应WM_CTLCOLOR�Q?br />Static代码如下�Q?/p>
HBRUSH CTest1Dlg::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor)
{
HBRUSH hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor);
// TODO: Change any attributes of the DC here
CFont m_font;   //声明变量
m_font.CreatePointFont(600,"华文行楷"); //讄��字体大小和类�?/span>
if(pWnd->GetDlgCtrlID()==IDC_STATIC01)//可以�?/span>CTLCOLOR_STATIC表示静态控�?/span>
{
   pDC->SelectObject(&m_font);       //讄��字体
   pDC->SetTextColor(RGB(0,0,255)); //讄��字体颜色
   pDC->SetBkMode(TRANSPARENT);      //属性设�|��ؓ透明
   return (HBRUSH)::GetStockObject(NULL_BRUSH); //不返回画�?/span>
}
// TODO: Return a different brush if the default is not desired
return hbr;
}

Radio和Check代码如下
HBRUSH CLoginDlg::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor)
{
    //HBRUSH hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor);
    HBRUSH hbr = ::CreateSolidBrush(#f9f9f9);

    // TODO:  Change any attributes of the DC here

    if (pWnd->GetDlgCtrlID() == IDC_RADIO_REALNAME  ||
        pWnd->GetDlgCtrlID() == IDC_RADIO_ANONYMOUS ||
        pWnd->GetDlgCtrlID() == IDC_CHECK_SELFSELECT)
    {
        pDC->SetBkMode(TRANSPARENT);

        CRect rc;
        pWnd->GetWindowRect(&rc);
        ScreenToClient(&rc);

        CDC* dc = GetDC();
        pDC->BitBlt(0,0,rc.Width(),rc.Height(),dc,rc.left,rc.top,SRCCOPY);    //把父�H�口背景先画到按钮上
        ReleaseDC(dc);

        hbr = (HBRUSH) ::GetStockObject(NULL_BRUSH);
    }
}

王�v�?/a> 2013-08-18 16:54 发表评论

VS2008中docsingl.cpp文�g中的ENSURE(strDocName.LoadString(AFX_IDS_UNTITLED))错误

Mon, 12 Aug 2013 09:41:00 GMT
MFC�E�序vs2008�~�译通过�Q�运行时出错�Q�无法打开�Q�提�C�f:\dd\xxxx的docsingl.cpp中的210行，扑ֈ�以下代码�Q?/span>
void CSingleDocTemplate::SetDefaultTitle(CDocument* pDocument)
{
        CString strDocName;
        if (!GetDocString(strDocName, CDocTemplate::docName) ||
             strDocName.IsEmpty())
        {
                // use generic 'untitled'
                ENSURE(strDocName.LoadString(AFX_IDS_UNTITLED));
        }
     pDocument->SetTitle(strDocName);
}

�U�色行就是出错地方，原因是资源文件引��P��一般是从英文或其它语言�Ҏ��体中文而造成�Q�把语言相关改�ؓ以下几行
#if !defined(AFX_RESOURCE_DLL) || defined(AFX_TARG_CHS)
#ifdef _WIN32
LANGUAGE 4, 2
#pragma code_page(936)
#endif //_WIN32

王�v�?/a> 2013-08-12 17:41 发表评论

MFC判断�U�程是否存在

Wed, 31 Jul 2013 03:37:00 GMT

GetExitCodeThread函数是获得线�E�的退出码�Q?/span>

函数�Q?/span> GetExitCodeThread()

功能�Q�获取一个结束线�E�的�q�回�?/span>

函数原�Ş�Q?/span> BOOL GetExitCodeThread( HANDLE hThread, LPDWORD lpExitCode);

参数�Q?/span> hThread 指向�Ʋ获取返回值的�U�程对象的句�?/span>

               lpExitCode 用于存储�U�程的返回�?/span>

�q�回��|��函数执行成功则返回非0��|��否则�q�回 0�Q?/span>FALSE�Q?/span>

�W�一个参数是�U�程句柄�Q�用 CreateThread 创徏�U�程时获得到�?/span>

�W�二个参数是一�?/span> DWORD的指针，用户应该使用一�?/span> DWORD �c�d��的变量去接收数据�Q�返回的数据是线�E�的退出码�Q?/span>
通过�U�程退出码可以判断�U�程是否正在�q�行�Q�还是已�l�退出。或者可以判断线�E�是否是正常退��是异帔R��出�?/span>

执行成功�Ӟ��存放�U�程的状态码�Q�如果是�U�程的返回��|��表示�U�程执行完，  如果�U�程没执行完�Q�返�?/span>STILL_ACTIVE,如果�U�程的返回值就�?/span>STILL_ACTIVE�Q�就无法判断  .

MSDN解释:
GetExitCodeThread Function

Retrieves the termination status of the specified thread.

BOOL WINAPI GetExitCodeThread( __in HANDLE hThread, __out LPDWORD lpExitCode );

Parameters

hThread

A handle to the thread.

The handle must have the THREAD_QUERY_INFORMATION access right. For more information, see Thread Security and Access Rights.

lpExitCode

A pointer to a variable to receive the thread termination status. If the specified thread has not terminated and the function succeeds, the termination status returned is STILL_ACTIVE.

Return Value

If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero. To get extended error information, call GetLastError.

Remarks

If the thread has terminated and the function succeeds, the termination status returned may be one of the following:

The exit value specified in the ExitThread or TerminateThread function.
The return value from the thread function.
The exit value of the thread's process.

Warning  If a thread happens to return STILL_ACTIVE (259) as an error code, applications that test for this value could end up in an infinite loop.

参考例子：
1 int main()
2 {
3     DWORD exitCode1 = 0;
4     DWORD exitCode2 = 0;
5     DWORD threadId;
6
7     HANDLE hThrd1 = CreateThread(NULL, 0,   ThreadFunc1, 0, 0, &threadId );
9     if (hThrd1)
10         printf("Thread 1 launched\n");
11
13     HANDLE hThrd2 = CreateThread(NULL, 0,  ThreadFunc2, 0, 0, &threadId );
14     if (hThrd2)
15         printf("Thread 2 launched\n");
16
18     for (;;)
19     {
20           printf("Press any key to exit..\n");
21           getch();
22           GetExitCodeThread(hThrd1, &exitCode1);
23           GetExitCodeThread(hThrd2, &exitCode2);
24           if ( exitCode1 == STILL_ACTIVE )
25               puts("Thread 1 is still running!");
26
27           if ( exitCode2 == STILL_ACTIVE )
28               puts("Thread 2 is still running!");
29           if ( exitCode1 != STILL_ACTIVE   && exitCode2 != STILL_ACTIVE )
30               break;
31     }
32
33     CloseHandle(hThrd1);
34     CloseHandle(hThrd2);
35
36     printf("Thread 1 returned %d\n", exitCode1);
37     printf("Thread 2 returned %d\n", exitCode2);
38     return EXIT_SUCCESS;
39 }
40
41 DWORD WINAPI ThreadFunc1(LPVOID n)
42 {
43      Sleep((DWORD)n*1000*2);
44      return (DWORD)n * 10;
45 }
46
48 DWORD WINAPI ThreadFunc2(LPVOID n)
49 {
50      Sleep((DWORD)n*1000*2);
51      return (DWORD)n * 10;
52 }

王�v�?/a> 2013-07-31 11:37 发表评论

MFC实现�?picture control �c�，对话框上昄��囄��

Mon, 22 Jul 2013 10:09:00 GMT

Download control source - 2.61 KB
Download demo - 2.19 MB
以上是源码及演示�E�序下蝲地址
�Q�文章原地址 http://www.codeproject.com/Articles/24969/An-MFC-picture-control-to-dynamically-show-picture�Q?/h2>
Introduction 介绍
�q�篇文章描述的是一个可以用于在对话框上昄��各种��L��c�d��囄�� (�?BMP, GIF, JPEG...) �?/span>MFC控�g
Background 背景
我花了一些时间去搜烦可以用于昄��囄��的MFC控�g, 但却没有发现合适的�?所以我军_��自己做一个轻量��Q�灵�z�d��高的囄��控�g�Q�Picture control�Q�去昄��各种�c�d��的图片�?/p>
Using the code 如何使用
�q�个控�g内部使用的是GDI+库，所以请在��用时把GdiPlus.lib加入��C��的工�E�中�Q�include libraries�Q��?/span>
使用�q�个控�g�Ӟ��先用VC++对话框设计器创徏一个静态文字控�Ӟ��static text control�Q?/span> 。之后用MFC向导��个控件分配一个控件变量，�c�d��定义为CPictureCtrl�?/p>
现在你可以用你的控�g装蝲昄��囄��了，你只需要在�q�几�?code style="color: #990000; font-family: 'Courier New', Courier, mono; font-size: 11pt;">CPictureCtrl::LoadFrom... 函数�Q?选择合适你需要的的进行调用。装载后控�g会自动更新�ƈ昄��囄��?/p>
要清除掉控�g中显�C�的囄��Q�调�?code style="color: #990000; font-family: 'Courier New', Courier, mono; font-size: 11pt;">CPictureCtrl::FreeImage卛_��?/p>
你的囄��会被自动调整到控件的大小�Q�这可能会改变图片原先的长宽比例�?/p>
Collapse | Copy Code
class CPictureCtrl :
public CStatic
{
public:
   //Constructor
   CPictureCtrl(void);
   //Destructor
   ~CPictureCtrl(void);

public:
   //Loads an image from a file
   BOOL LoadFromFile(CString &szFilePath);
   //Loads an image from an IStream interface
   BOOL LoadFromStream(IStream* piStream);
   //Loads an image from a byte stream;
   BOOL LoadFromStream(BYTE* pData, size_t nSize);
   //Loads an image from a Resource
   // BOOL LoadFromResource(HMODULE hModule, LPCTSTR lpName, LPCTSTR lpType);
   //Overload - Single load function
   BOOL Load(CString &szFilePath);
   BOOL Load(IStream* piStream);
   BOOL Load(BYTE* pData, size_t nSize);
   // BOOL Load(HMODULE hModule, LPCTSTR lpName, LPCTSTR lpType);
   //Frees the image data
   void FreeData();

protected:
   virtual void PreSubclassWindow();
   //Draws the Control
   virtual void DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct);
   virtual BOOL OnEraseBkgnd(CDC* pDC);

private:
   //Internal image stream buffer
   IStream* m_pStream;
   //Control flag if a pic is loaded
   BOOL m_bIsPicLoaded;
   //GDI Plus Token
   ULONG_PTR m_gdiplusToken; };
Points of interest
�q�个控�g是基�?nbsp;CStatic control 设计的（基类使用的是CStatic�Q?/span>。所以你可以使用CStatic control的各�U�功�?/span>�Q�但它�ƈ不会昄��M��文字。对GDI+库的使用使其可以支持各种��L��c�d��的图片�?/span>
History 历史
1.0 - Initial release.
1.1 - A bug when drawing the control without a loaded image was corrected.
1.2 - A bug when drawing the control was corrected.
Loading an image from a resource is disabled due to problems recognizing it correctly as an image.
License
This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)
About the Author
TEiseler

Tester / Quality Assurance

Germany

Member

本文转自�Q?a style="font-family: verdana, 'courier new'; line-height: 21px;">http://blog.csdn.net/cashey1991/article/details/7516996

王�v�?/a> 2013-07-22 18:09 发表评论

动态创��图时�?AfxCheckDialogTemplate执行出错

Fri, 31 May 2013 09:02:00 GMT

动态创��图时�?/span> AfxCheckDialogTemplate执行出错

�?/span>mfc�?/span>sdi架构中，准备多做几个视图�Q�试囄��l�承�?/span>formview�Q�但在动态创��囄��时候出了错误，AfxCheckDialogTemplate执行出错。后来通过搜烦发现cformview�c�d��联对话框时候，资源必须具备child属性�?/span>

1.CFormView�c�d��联的对话框资源必��d��?/span>Child属性�?/span>

�?/span>CFormView�z��的类�Q�可以关联一个对话框资源。但该对话框资源必须在属性设定中Style选定[Child]属性，否则的话�Q?/span>
代码可以�~�译�Q�但Debug�q�行会报告一个断�a�错误�Q�跟�t�代码，断言在：

#ifdef _DEBUG

    // dialog template must exist and be invisible with WS_CHILD set
    if (!_AfxCheckDialogTemplate(m_lpszTemplateName, TRUE))
    {
        ASSERT(FALSE);          // invalid dialog template name
        PostNcDestroy();        // cleanup if Create fails too soon
        return FALSE;
    }

#endif //_DEBUG

2.CFormView比较�Ҏ��Q�是一个父�H�体嵌套了一个子�H�体�Q�所以，
CFormView�cȝ��z��cȝ��实例不响�?/span>WM_CLOSE消息�Q�仅仅响�?/span>WM_DESTROY消息�?/span>
另外�Q�若要用代码关闭当前View,也不能直接：PostMessage(WM_CLOSE,0,0);
而必��d��获取父窗体的指针�Q�然后对父窗体发�?/span>WM_CLOSE消息才行�Q�像�q�样�Q?/span>
GetParent()->PostMessage(WM_CLOSE,0,0);
才能够达到目的�?/span>
《深入浅�?/span>MFC》第八章461��图8-1清楚地说明了�q�种情况�Q?/span>View�H�口�?/span>CChildFrame�H�口的子�H�口�?/span>

王�v�?/a> 2013-05-31 17:02 发表评论

Thu, 30 May 2013 00:35:00 GMT
拖动无标题的�H�口可以重蝲WM_LBUTTONDOWN�Q�添加如下代码：
SendMessage(WM_SYSCOMMAND,0xF012,0);
�?br />
PostMessage (WM_NCLBUTTONDOWN , HTCAPTION , MAKELPARAM(point.x , point. y ));

王�v�?/a> 2013-05-30 08:35 发表评论

Wed, 29 May 2013 03:18:00 GMT
代码�C�Z��Q?/span>
#define LWA_COLORKEY 0x00000001         //方式
#define WS_EX_LAYERED 0x00080000

typedef BOOL (WINAPI *lpfnSetLayeredWindowAttributes)(HWND hWnd, COLORREF crKey, BYTE bAlpha, DWORD dwFlags);
lpfnSetLayeredWindowAttributes SetLayeredWindowAttributes;

//讄��成边�~�透明
COLORREF maskColor=#000000;

HMODULE hUser32 = GetModuleHandle("user32.dll"); //加蝲动态链接库
SetLayeredWindowAttributes = (lpfnSetLayeredWindowAttributes)GetProcAddress(hUser32,"SetLayeredWindowAttributes");

//取得SetLayeredWindowAttributes函数指针
//为窗口加入WS_EX_LAYERED扩展属�?/span>
SetWindowLong(this->GetSafeHwnd(), GWL_EXSTYLE, GetWindowLong(GetSafeHwnd(), GWL_EXSTYLE)^WS_EX_LAYERED);

//调用SetLayeredWinowAttributes函数
SetLayeredWindowAttributes(this->GetSafeHwnd(), maskColor, 192, LWA_COLORKEY);

FreeLibrary(hUser32);   //释放动态链接库

以上代码加入OnInitDialog()中，其中 SetLayeredWindowAttributes(this->GetSafeHwnd(), maskColor, 192, LWA_COLORKEY); 里，maskColor为将�q�行透明处理的颜�Ԍ�� 192为透明度， LWA_COLORKEY为透明方式�?/span>

若要透明整个对话框，�?/span>LWA_COLORKEY=2;
若要寚w��定颜色透明�Q�则LWA_COLORKEY=1;

本文转自�Q?/span>http://chenjiuliang.blog.163.com/blog/static/36572155201151735735374/

王�v�?/a> 2013-05-29 11:18 发表评论

Wed, 29 May 2013 03:02:00 GMT
1、导入Bitmap资源囄��Q?/span>
2、重载WM_PAINT ——>void CXXXDlg::OnPaint()
3、添加如下代码：
CRect   rect;
    GetClientRect(&rect);
    CDC   dcMem;
    dcMem.CreateCompatibleDC(&dc);
    CBitmap   bmpBackground;
    bmpBackground.LoadBitmap(IDB_BITMAP_TOOL);   //IDB_BITMAP_TOOL是你自己的图对应的ID

    BITMAP   bitmap;
    bmpBackground.GetBitmap(&bitmap);
    CBitmap   *pbmpOld=dcMem.SelectObject(&bmpBackground);
    dc.StretchBlt(0,0,rect.Width(),rect.Height(),&dcMem,0,0,
        bitmap.bmWidth,bitmap.bmHeight,SRCCOPY);

其他�Ҏ��Q?br />重写WM_ERASEBKGND消息
BOOL CxxDialog::OnEraseBkgnd(CDC* pDC)
{
   // CDialog::OnEraseBkgnd(pDC);//忘记要不要执行父�cȝ��q�个�?
    CDC  memdc;
    memdc.CreateCompatibleDC(pDC);
    CBitmap bmp;
    CBitmap *pOldBmp;
    BITMAP bm;//用来保存囄��的长宽等信息

    bmp.LoadBitmap(IDB_BITMAP1);
    bmp.GetBitmap(&bm);

    //��图片选进�~�冲�?/span>
    pOldBmp = (CBitmap *)memdc.SelectObject(&bmp);

    //如果囄��跟对话框的客户区一样大�Q�直接用BitBlt��可�?br />    //pDC->BitBlt(0, 0, rcWnd.Width(), rcWnd.Height(), &memdc, 0, 0, SRCCOPY);

    //如果囄��比对话框的背景小�Q�就要用StrechBlt来拉伸图�?/span>
    pDC->StrechBlt(0, 0, rcWnd.Width, rcWnd.Height(), &memdc, 0, 0, bm.bmWidth,bm.bmHeight, SRCCOPY);

   //释放DC
    memdc.SelectObject(pOldBmp);
    memdc.DeleteDC();

    return TRUE;
}

其他�Ҏ��Q?/span>http://blog.csdn.net/ply421600/article/details/6692967

王�v�?/a> 2013-05-29 11:02 发表评论

Base64�~�解�?C++�?

Wed, 20 Mar 2013 06:00:00 GMT
.h文�g:
#include <string>
using namespace std;

class ZBase64
{
public:
    /*�~�码
    DataByte
        [in]输入的数据长�?以字节�ؓ单位
    */
    string Encode(const unsigned char* Data,int DataByte);
    /*解码
    DataByte
        [in]输入的数据长�?以字节�ؓ单位
    OutByte
        [out]输出的数据长�?以字节�ؓ单位,请不要通过�q�回��D��?br />        输出数据的长�?br />    */
    string Decode(const char* Data,int DataByte,int& OutByte);
};

.cpp文�g�Q?br />
#include "stdAfx.h"
#include "ZBase64.h"

string ZBase64::Encode(const unsigned char* Data,int DataByte)
{
    //�~�码�?/span>
    const char EncodeTable[]="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
    //�q�回�?/span>
    string strEncode;
    unsigned char Tmp[4]={0};
    int LineLength=0;
    for(int i=0;i<(int)(DataByte / 3);i++)
    {
        Tmp[1] = *Data++;
        Tmp[2] = *Data++;
        Tmp[3] = *Data++;
        strEncode+= EncodeTable[Tmp[1] >> 2];
        strEncode+= EncodeTable[((Tmp[1] << 4) | (Tmp[2] >> 4)) & 0x3F];
        strEncode+= EncodeTable[((Tmp[2] << 2) | (Tmp[3] >> 6)) & 0x3F];
        strEncode+= EncodeTable[Tmp[3] & 0x3F];
        if(LineLength+=4,LineLength==76) {strEncode+="\r\n";LineLength=0;}
    }
    //对剩余数据进行编�?/span>
    int Mod=DataByte % 3;
    if(Mod==1)
    {
        Tmp[1] = *Data++;
        strEncode+= EncodeTable[(Tmp[1] & 0xFC) >> 2];
        strEncode+= EncodeTable[((Tmp[1] & 0x03) << 4)];
        strEncode+= "==";
    }
    else if(Mod==2)
    {
        Tmp[1] = *Data++;
        Tmp[2] = *Data++;
        strEncode+= EncodeTable[(Tmp[1] & 0xFC) >> 2];
        strEncode+= EncodeTable[((Tmp[1] & 0x03) << 4) | ((Tmp[2] & 0xF0) >> 4)];
        strEncode+= EncodeTable[((Tmp[2] & 0x0F) << 2)];
        strEncode+= "=";
    }

    return strEncode;
}

string ZBase64::Decode(const char* Data,int DataByte,int& OutByte)
{
    //解码�?/span>
    const char DecodeTable[] =
    {
, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
, // '+'
, 0, 0,
, // '/'
, 53, 54, 55, 56, 57, 58, 59, 60, 61, // '0'-'9'
, 0, 0, 0, 0, 0, 0,
, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, // 'A'-'Z'
, 0, 0, 0, 0, 0,
, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38,
, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, // 'a'-'z'
    };
    //�q�回�?/span>
    string strDecode;
    int nValue;
    int i= 0;
    while (i < DataByte)
    {
        if (*Data != '\r' && *Data!='\n')
        {
            nValue = DecodeTable[*Data++] << 18;
            nValue += DecodeTable[*Data++] << 12;
            strDecode+=(nValue & 0x00FF0000) >> 16;
            OutByte++;
            if (*Data != '=')
            {
                nValue += DecodeTable[*Data++] << 6;
                strDecode+=(nValue & 0x0000FF00) >> 8;
                OutByte++;
                if (*Data != '=')
                {
                    nValue += DecodeTable[*Data++];
                    strDecode+=nValue & 0x000000FF;
                    OutByte++;
                }
            }
            i += 4;
        }
        else// 回�R换行,跌��
        {
            Data++;
            i++;
        }
     }
    return strDecode;
}

使用�C�Z��Q�结合CxImage库）�Q?/span>
CString CScanDlg::EncodeImage()
{//对图片进行Base64�~�码
    ZBase64 zBase;
    //囄��~�码
    CxImage  image;   // 定义一个CxImage对象
    image.Load(this->m_strImgPath, CXIMAGE_FORMAT_JPG);   //先装载jpg文�g,需要指定文件类�?/span>
    long size=0;//得到囑փ�大小
    BYTE* buffer=0;//存储囑փ�数据的缓�?/span>
    image.Encode(buffer,size,CXIMAGE_FORMAT_JPG);//把image对象中的囑փ�以type�c�d��数据copy到buffer
    string strTmpResult=zBase.Encode(buffer,size);
    CString result;
    result = strTmpResult.c_str();
    return result;
}

void CScanDlg::DecodeImageData(CString strData)
{//对Base64�~�码�q�的数据解码�q�显�C�原囄��

    ZBase64 zBase;
    int OutByte=0;
    string strTmpResult=zBase.Decode(strData,strData.GetLength(),OutByte);
    int i,len = strTmpResult.length();
    BYTE *buffer = new BYTE[len];
    for (i=0;i    {
        buffer[i] = strTmpResult[i];
    }
    CxImage image(buffer,len,CXIMAGE_FORMAT_JPG);//把内存缓冲buffer中的数据构造成Image对象
    delete [] buffer;
    CDC* hdc = m_picture.GetDC();
    m_bitmap = image.MakeBitmap(hdc->m_hDC);
    HBITMAP h0ldBmp = m_picture.SetBitmap(m_bitmap);
    if(h0ldBmp) DeleteObject(h0ldBmp);
    if(hdc->m_hDC) m_picture.ReleaseDC(hdc);
    if(m_bitmap) DeleteObject(m_bitmap);
}

本文转自�Q�http://www.cnblogs.com/phinecos/archive/2008/10/10/1308272.html

王�v�?/a> 2013-03-20 14:00 发表评论

VS2008打开资源文�g时显�C��没有安装�q�个ActiveX控�g "{648A5600-2C6E-101B-82B6-000000000014

Wed, 20 Mar 2013 02:23:00 GMT

手动注册�Q?/strong>

    大家知道�Q�当我们安装VC++6.0/VB6.0�Ӟ��如果选择了ACtiveX控�g��（自定义安装）�Q�MSComm控�g��׃��自动安装在计��机上了�Q��ƈ在系�l�文件夹下多�?个文�Ӟ��Mscomm.srg, Mscomm32.ocx,Mscomm32.dep
　　注意�Q�操作系�l�不同，则系�l�文件夹不同�Q?/span>
　　　　　　　Win98:    windows/system
　　　　　　　Win2000: winnt/system32
     那么用了MSComm控�g的程序在发布时或者在VS2008开发环境下如何来注册MSComm控�g呢？发布�E�序时可以用安装�E�序�Q�我们这里不介绍�Q�只谈谈如何手工来注册安装MSComm控�g�?/span>
　
　　�W�一步：��Mscomm.srg, Mscomm32.ocx,Mscomm32.dep三个文�g复制到系�l�文件夹中。要注意的是�Q�MSComm控�g是要授权的，所以必��d��其��?#8220;执照”Licence 在注册表中登记注册，下一步就是注册方法。至于�ؓ什么要�q�样做，可以看看下面的网��：http://support.microsoft.com/support/kb/articles/q151/7/71.asp
　　
　　�W�二步：用Windows下的注册工具regsvr32注册该OCX控�g�Q�点�?#8220;开�?#8221;->"�q�行"�Q�再在中填入�Q�假设操作安装在C盘，WIN2000�Q�：
      Regsvr32  C:\winnt\system32\Mscomm32.ocx
　
   　�W�三步：在注册表中手工新��Z��个主键项�Q�先在点�?#8220;开�?#8221;->"�q�行"�Q�再在中填入regedit命��o打开注册表，扑ֈ�HKEY_CLASSES_ROOT\Licenses�Q�在其中��d��主键
4250E830-6AC2-11cf-8ADB-00AA00C00905　�q�将内容讄��为：
　　　　　　　kjljvjjjoquqmjjjvpqqkqmqykypoqjquoun
　　　�Q�注�Q�这��内容也可以用记事本�E�序打开Mscomm.srg文�g看到�Q?/span>
　
　　在VC�Q�包括VC.NET�Q�中应用�Q�我已经介绍多次了，�q�里再说说在Delphi中的应用�Q�进入Delphi环境中，选择菜单命��o�Q�Component->Import ActiveX Control,在列表中可以看到Microsoft Comm Control�Q�version 6.0, 选中后点击Install按钮,��完成安装。在ActiveX控�g��上可以看到MSComm控�g的电话图标�?br />
以上转自�Q?/span>http://www.gjwtech.com/scomm/manaualregistermscomm.htm

自动注册�Q?/strong>

    �q�行附�g中的“注册.cmd”完成自动注册 MSComm控�g�?/span>  MSComm

王�v�?/a> 2013-03-20 10:23 发表评论

Thu, 07 Mar 2013 02:49:00 GMT
�Ҏ��1�Q?br />
In the Options go into Projects and Solutions -> VC++ Directories page and place this rows:

$(SystemRoot)\System32
$(SystemRoot)
$(SystemRoot)\System32\wbem

适用VC8的各�U�工�E�项目（包括�U�d��讑֤�的项目）�Q�如果在加了以后�q�出现这��L��错误提示�Q�将上面的三句删除掉�Q�重新加一�ơ就可以�?br />
�Ҏ��2�Q?/span>

在Visual Studio中，选择工具->选项->工程和解��x��?>VC++目录
点击上方的像文�g夹的按钮-新徏行，然后在空白处��d��cmd.exe所在的目录C:\Windows\System32\ �Q�如果你是默认装在C盘的话）点击��定�Q�就OK了�?nbsp;

In VS, go to

tools>options>projects and solutions>VC++ Directories

click the little folder button (new line) then in the new line that appears put:

本文转自�Q?/span>http://www.shnenglu.com/zhangyq/archive/2009/02/16/73940.html

王�v�?/a> 2013-03-07 10:49 发表评论

MFC��网�l�连接和ping IP地址

Fri, 01 Mar 2013 07:51:00 GMT
代码�C�Z��Q?br />
#include
#pragma comment(lib, "Sensapi.lib")
BOOL CheckNetIsOK(const CString sUpdateIP)
{
    //Judge Network is Connected
    int nCount = 1;
    do
    {
        DWORD dw;
        if( IsNetworkAlive(&dw))
        {
            break;
        }
        else
        {
            Sleep(10000);
            CString sNetWorkConnect;
            sNetWorkConnect.Format("�W?d�ơ网�l�未成功�q�接, 10�U�后重试", nCount);
            m_recvCtrl.SetWindowText(sNetWorkConnect);
            nCount++ ;
        }
    } while (nCount <4);

    if (nCount == 4)
    {
        m_recvCtrl.SetWindowText("�|�络�q�接��p�|, 共检��?0�U?);
        return FALSE;
    }

    DWORD n = CCommonFun::WinExecAndWait32(_T("ping.exe"), sUpdateIP + " -n 2"/*sCmdPara*/, NULL, 10000);
    if (n == 0)
    {
        return TRUE;
    }
    else
    {
        CString sNetWorkConnect;
        sNetWorkConnect.Format("�|�络�q�接正常, Ping:%s ��p�|, ��h��此IP对应的服务器是否正常工作", sUpdateIP);
        m_recvCtrl.SetWindowText(sNetWorkConnect);
        return FALSE;
    }
}

王�v�?/a> 2013-03-01 15:51 发表评论

MFC CEdit昄��q�加信息

Fri, 01 Mar 2013 07:50:00 GMT
代码�C�Z��Q?br />
  int LineNum=m_recvCtrl.GetLineCount();
    if(LineNum > 100)                                // ��过最大信息显�C��?/span>
    {
        m_recvCtrl.SetSel(0, -1);
        m_recvCtrl.Clear();                            // 清空�~�辑�?/span>
    }

    CTime RevTime = CTime::GetCurrentTime();
    CString Temp = RevTime.Format("[%Y/%m/%d %H:%M:%S]: ");

    CString strEdit;
    m_recvCtrl.GetWindowText(strEdit);
    m_recvCtrl.SetSel(strEdit.GetLength(), strEdit.GetLength());
    m_recvCtrl.ReplaceSel(Temp + sText + "\n");

王�v�?/a> 2013-03-01 15:50 发表评论

查找CString里面出现某个字符的次�?

Tue, 19 Feb 2013 06:34:00 GMT
1�?/span>Replace函数替换查找

Replace函数�q�回��|��q�回被替换的字符数。如果这个字�W�串没有改变则返回零�?/span>

CString sTest="aabbccaadd";
int nCount=s.Replace("a","a");

nCount��是你的惌��的�?br />
CString::Replace
int Replace( TCHAR chOld, TCHAR chNew );
int Replace( LPCTSTR lpszOld, LPCTSTR lpszNew );

Return Value
The number of replaced instances of the character. Zero if the string isn't changed.

2�?/span>标准函数 count_if

#include
#include
#include
#include
using namespace std;

int main( void )
{
    const string a = " 12113";
    cout << count_if( a.begin(), a.end(), bind2nd(equal_to(),'1') ) << endl;

    return 0;
}

CString也一��P��但它没有标准的�P代器�Q�因此需要写�?/span>
count_if( (LPCTSTR)a, (LPCTSTR)a+a.GetLength(), bind2nd(equal_to(),_T('某字�W?)) )

王�v�?/a> 2013-02-19 14:34 发表评论

MFC获取��盘�I�间信息

Wed, 16 Jan 2013 09:00:00 GMT
�C�Z��代码�Q?/span>
DWORD CCommonFun::GetDesignatedDiskFreeSpace(const CString &szPath)
{
    DWORD dwTotalDiskSpace,dwFreeDiskSpace,dwUsedDiskSpace;

    ULARGE_INTEGER uiFreeBytesAvailableToCaller;
    ULARGE_INTEGER uiTotalNumberOfBytes;
    ULARGE_INTEGER uiTotalNumberOfFreeBytes;

    if(GetDiskFreeSpaceEx(szPath, &uiFreeBytesAvailableToCaller,
        &uiTotalNumberOfBytes,
        &uiTotalNumberOfFreeBytes))
    {
        dwTotalDiskSpace = (DWORD)(uiTotalNumberOfBytes.QuadPart / 1024 / 1024);
        dwFreeDiskSpace  = (DWORD)(uiFreeBytesAvailableToCaller.QuadPart >> 20);
        dwUsedDiskSpace     = dwTotalDiskSpace - dwFreeDiskSpace;
        TRACE("��盘%s::�ȝ��?dMB, 已用%dMB, 可用%dMB\n", szPath,
            dwTotalDiskSpace, dwUsedDiskSpace, dwFreeDiskSpace);

        return dwFreeDiskSpace;
    }

    return -1;
}

王�v�?/a> 2013-01-16 17:00 发表评论

国产亚洲一区二区三区在线观看 ,欧美日韩免费观看一区三区,国产女人aaa级久久久级

MFC wcslen获取中文长度

MFC讄���鼠标滑轮响应

MFC 多文档界面禁用关闭、最大化按钮

MFC 子对话框与父视图传递自定义消息

MFC BMP文�g转JPEG文�g

Description

Features list

CMainFrame

CFTPListView

CConnectDlg

CTransferManagerDlg

CDownloadThread

CUploadThread

To do list:

Contacting the Author

Revision history

License

MFC COMBOX控�g只接受数字和讄���数字范围

MFC解决讄���控�g内容 文字重叠问题

判断文�gCFile已经打开

MFC获取�pȝ��当前旉���

Word、RichEdit文本转RTF文�g�Q�RTF文�g转HTML

Richedit使用大全

MFC讄���控�g背景透明

VS2008中docsingl.cpp文�g中的ENSURE(strDocName.LoadString(AFX_IDS_UNTITLED))错误

MFC判断�U�程是否存在

GetExitCodeThread Function

Parameters

Return Value

Remarks

MFC实现�?picture control �c�，对话框上昄���囄���

Download control source - 2.61 KBDownload demo - 2.19 MB

以上是源码及演示�E�序下蝲地址

�Q�文章原地址 http://www.codeproject.com/Articles/24969/An-MFC-picture-control-to-dynamically-show-picture�Q?/h2>

Introduction 介绍

Background 背景

Using the code 如何使用

Points of interest

History 历史

License

About the Author

动态创�����图时�?AfxCheckDialogTemplate执行出错

Base64�~�解�?C++�?

VS2008打开资源文�g时显�C����没有安装�q�个ActiveX控�g "{648A5600-2C6E-101B-82B6-000000000014

MFC������网�l�连接和ping IP地址

MFC CEdit昄����q�加信息

查找CString里面出现某个字符的次�?

MFC获取���盘�I�间信息

MFC讄��鼠标滑轮响应

MFC COMBOX控�g只接受数字和讄��数字范围

MFC解决讄��控�g内容文字重叠问题

MFC获取�pȝ��当前旉��

MFC讄��控�g背景透明

MFC实现�?picture control �c�，对话框上昄��囄��

Download control source - 2.61 KB
Download demo - 2.19 MB

动态创��图时�?AfxCheckDialogTemplate执行出错

VS2008打开资源文�g时显�C��没有安装�q�个ActiveX控�g "{648A5600-2C6E-101B-82B6-000000000014

MFC��网�l�连接和ping IP地址

MFC CEdit昄��q�加信息

MFC获取��盘�I�间信息