C++ Programmer's Cookbook

1得到mac
//需要加入netapi32.lib
include "stdafx.h"

#include <windows.h>

#include <wincon.h>

#include <stdlib.h>

#include <stdio.h>

#include <time.h>

// 因為是通過NetAPI來獲取網卡信息,所以需要包含其題頭文件nb30.h

#include <nb30.h>

typedef struct _ASTAT_

{

ADAPTER_STATUS adapt;

NAME_BUFFER

NameBuff [30];

} ASTAT, * PASTAT;

ASTAT Adapter;

// 定義一個存放返回網卡信息的變量

// 輸入參數:lana_num為網卡編號,一般地,從0開始,但在Windows 2000中并不一定是連續分配的

void getmac_one (int lana_num)

{

NCB ncb;

UCHAR uRetCode;

memset( &ncb, 0, sizeof(ncb) );

ncb.ncb_command = NCBRESET;

ncb.ncb_lana_num = lana_num // 指定網卡號

// 首先對選定的網卡發送一個NCBRESET命令,以便進行初始化

uRetCode = Netbios( &ncb );

printf( "The NCBRESET return code is: 0x%x \n", uRetCode );

memset( &ncb, 0, sizeof(ncb) );

ncb.ncb_command = NCBASTAT;

ncb.ncb_lana_num = lana_num; // 指定網卡號

strcpy((char *)ncb.ncb_callname,"*" );

ncb.ncb_buffer = (unsigned char *) &Adapter; // 指定返回的信息存放的變量

ncb.ncb_length = sizeof(Adapter);

// 接著,可以發送NCBASTAT命令以獲取網卡的信息

uRetCode = Netbios( &ncb );

printf( "The NCBASTAT return code is: 0x%x \n", uRetCode );

if ( uRetCode == 0 )

{

// 把網卡MAC地址格式化成常用的16進制形式,如0010-A4E4-5802

printf( "The Ethernet Number[%d] is: %02X%02X-%02X%02X-%02X%02X\n",

lana_num,

Adapter.adapt.adapter_address[0],

Adapter.adapt.adapter_address[1],

Adapter.adapt.adapter_address[2],

Adapter.adapt.adapter_address[3],

Adapter.adapt.adapter_address[4],

Adapter.adapt.adapter_address[5] );

}

}

int main(int argc, char* argv[])

{

NCB ncb;

UCHAR uRetCode;

LANA_ENUM lana_enum;

memset( &ncb, 0, sizeof(ncb) );

ncb.ncb_command = NCBENUM;

ncb.ncb_buffer = (unsigned char *) &lana_enum;

ncb.ncb_length = sizeof(lana_enum);

// 向網卡發送NCBENUM命令,以獲取當前機器的網卡信息,如有多少個網卡、每張網卡的編號等

uRetCode = Netbios( &ncb );

printf( "The NCBENUM return code is: 0x%x \n", uRetCode );

if ( uRetCode == 0 )

{

printf( "Ethernet Count is : %d\n\n", lana_enum.length);

// 對每一張網卡,以其網卡編號為輸入編號,獲取其MAC地址

for ( int i=0; i<lana_enum.length; ++i)

getmac_one( lana_enum.lana[i]);

}

return 0;

}

2總聽到論壇有人問起如何打印一些簡單的圖形并輸出文字,因此簡化出如下一段打印程序代碼,僅供參與: [所有相關帖子]

    CDC MemDC;
    CPrintDialog dlg(FALSE,PD_NOPAGENUMS|PD_NOSELECTION,this);
    if(dlg.DoModal() == IDOK)   
    {
        MemDC.Attach(dlg.GetPrinterDC());//把打印設備環境附加到DC對象
        DOCINFO di;
        di.cbSize = sizeof(DOCINFO);
        di.lpszDocName = "圖形報告";
        di.lpszOutput = NULL;
        di.lpszDatatype = NULL;
        di.fwType = 0;
        MemDC.StartDoc(&di); //通知打印機驅動程序執行一新的打印任務
        MemDC.StartPage();//通知打印機驅動程序打印新頁
        MemDC.SetMapMode(MM_ANISOTROPIC);//(MM_HIENGLISH);//設置當前影射模式為：單位0.001英寸
        CSize size = CSize(800, 560);
        MemDC.SetWindowExt(size);
        //確定窗口大小
       
        //得到實際設備每邏輯英寸的象素數量
        int xLogPixPerInch = MemDC.GetDeviceCaps(LOGPIXELSX);
        int yLogPixPerInch = MemDC.GetDeviceCaps(LOGPIXELSY);
       
        //得到設備坐標和邏輯坐標的比例
        long xExt = (long)size.cx * xLogPixPerInch/96 ;
        long yExt = (long)size.cy * yLogPixPerInch/96 ;
        MemDC.SetViewportExt((int)xExt, (int)yExt);
       
        MemDC.TextOut(350,20,"測試報告");

        //在這里加入你想要進行的繪制及文字輸出
                //
                //
                //
                //
                //
                //
                //
                //
                //
                //
                //
                //

        MemDC.EndPage(); //通知打印機驅動程序頁結束
        MemDC.EndDoc();//通知打印機驅動程序打印完畢
        DeleteDC(MemDC.Detach());
    }
3得到文件的創建時間和最后修改時間等。
BOOL GetFileTime(
  HANDLE hFile,
  LPFILETIME lpCreationTime,
  LPFILETIME lpLastAccessTime,
  LPFILETIME lpLastWriteTime
);
4.Re:如何改變Edit中的字體顏色 [所有相關帖子]
如何改變對話框內控件的字體?
  你有沒有感到Edit,Static....控件的字體太單調,沒什么新新樣?下面的內容,給你一個解答.
  [解決方法]
  簡單的步驟:在Windows中,每個窗體都有自己的字體.要改變其字體首先要CFont::CreateFont創建一個字體,然后用CWnd::SetFont選擇此字體,賦給控件.但很多人可能會因為CreateFont的參數之多,望而卻步.下面我介紹一下參數.
  函數原型:
  BOOL CreateFont( int nHeight, int nWidth, int nEscapement, int nOrientation, int nWeight, BYTE bItalic, BYTE bUnderline, BYTE cStrikeOut, BYTE nCharSet, BYTE nOutPrecision, BYTE nClipPrecision, BYTE nQuality, BYTE nPitchAndFamily, LPCTSTR lpszFacename );

  參數說明:
  nHeight         :字體高度.>0:字體的高度值;=0:字體采用缺省直.<0:此值的絕對值為高度.
  nWidth          :字體寬度.
  nEscapement     :文本行的傾斜度.
  nOrientation    :字符基線的傾斜度.
  nWeight         :字體的粗細.如下:
    .FW_DONTCARE
    .FW_THIN
    .FW_EXTRALIGHT
     .....
  bItalic         :字體是否為斜體
  bUnderline      :字體是否帶下劃線
  cStrikeOut      :字體是否帶刪除線
  nCharSet        :字體的字符集
    .ANSI_CHARSET
    .DEFAULT_CHARSET
    .SYMBOL_CHARSET.....
  nOutPrecision   :字符的輸出精度
  nClipPrecision  :字符裁剪的精度
  nQuality        :字符的輸出質量
  nPitchAndFamily :字符間距和字體族(低位說明間距,高位說明字符族)
  lpszFacename    :字體名稱
  [程序實現]
  假設你已有了名為My的對話框工程.并有一個ID=IDC_EDIT1的Edit控件.
  class CMyDlg : public CDialog
  { 
  public:
         CFont m_Font;
  ........
  };
  BOOL CTMyDlg::OnInitDialog()
  {
     CDialog::OnInitDialog();

     // TODO: Add extra initialization here
     //CFont m_Font;
     m_Font.CreateFont(-11,0,0,0,100,FALSE,FALSE,0,ANSI_CHARSET,OUT_DEFAULT_PRECIS,CLIP_DEFAULT_PRECIS,DEFAULT_QUALITY,FF_SWISS,"Arial");
    CEdit *m_Edit=(CEdit *)GetDlgItem(IDC_EDIT1);
     m_Edit->SetFont(&m_Font,FALSE);
     return TRUE;  // return TRUE  unless you set the focus to a control
  }
  小小說明:在OnInitDialog()中的//CFont m_Font;前的"http://"號去掉,將類聲明中的CFont m_Font;去掉會是什么結果?請自己試試.
改變Edit字體顏色！ [所有相關帖子]
HBRUSH CButtonDlg::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor)
{
    HBRUSH hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor);
   
    // TODO: Change any attributes of the DC here
    if(nCtlColor == CTLCOLOR_EDIT)
    {
    if(pWnd->GetDlgCtrlID()== IDC_EDIT1)
        {
            pDC->SetTextColor(RGB(255,255,0));
            pDC->SetBkColor(RGB(251, 247, 200));
            pDC->SetBkMode(TRANSPARENT);
            return (HBRUSH) m_brush.GetSafeHandle();
        }
    }

    // TODO: Return a different brush if the default is not desired
    return hbr;
}
5 如何注冊控件?
這是一個很常見的問題,最簡單用winodws自帶的regsvr32或其它工具等,其原理是利用控件的regsiterserver函數與unregsiterserver來實現注冊與取消注冊,以下是代碼實現注冊:
dword registerserver( char* szpath )
{
   hinstance hinstance = ::loadlibrary( szpath );
   if ( 0 == hinstance )
   {
      return ::getlasterror();
   }
   typedef void (far pascal *regserver)(void);
   regserver regserver = (regserver) ::getprocaddress( hinstance, _t( "dllregisterserver" ));
   if ( 0 == regserver )
   {
      ::freelibrary( hinstance );
      return ::getlasterror();
   }
   regserver();
   ::freelibrary( hinstance );
}

6模擬點擊按鈕
::SendMessage(GetParent()->GetSafeHwnd(), WM_COMMAND, (WPARAM)MAKELONG(IDOK, BN_CLICKED), (LPARAM)GetParent()->GetDlgItem(IDOK)->GetSafeHwnd());
7枚舉進程
void GetProcessID(LPTSTR pszProcessName, DWORD& th32ProcessID)
{
    HANDLE hSnapshot = NULL;
                      
    __try
    {
        hSnapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
        if (INVALID_HANDLE_VALUE == hSnapshot)
        {
            __leave;
        }

        PROCESSENTRY32 pe;
        ZeroMemory(&pe, sizeof(PROCESSENTRY32));
        pe.dwSize = sizeof(PROCESSENTRY32);

        BOOL bProcess = Process32First(hSnapshot, &pe);
        while (bProcess)
        {
            if (pe.szExeFile == StrStrI(pe.szExeFile, pszProcessName))
            {
                th32ProcessID = pe.th32ProcessID;
                break;
            }

            bProcess = Process32Next(hSnapshot, &pe);
        }

        if (!bProcess)
        {
            __leave;
        }
    }
    __finally
    {
        if (INVALID_HANDLE_VALUE != hSnapshot)
        {
            CloseHandle(hSnapshot);
        }
    }
}
8: 如何打開一個應用程序？ ShellExecute(this->m_hWnd,"open","calc.exe","","", SW_SHOW );
或 ShellExecute(this->m_hWnd,"open","notepad.exe",
    "c:\\MyLog.log","",SW_SHOW );
正如您所看到的，我并沒有傳遞程序的完整路徑。
Q: 如何打開一個同系統程序相關連的文檔？ ShellExecute(this->m_hWnd,"open",
    "c:\\abc.txt","","",SW_SHOW );
Q: 如何打開一個網頁？ ShellExecute(this->m_hWnd,"open",
    "Q: 如何激活相關程序，發送EMAIL？ ShellExecute(this->m_hWnd,"open",
    "mailto:nishinapp@yahoo.com","","", SW_SHOW );
Q: 如何用系統打印機打印文檔？ ShellExecute(this->m_hWnd,"print",
    "c:\\abc.txt","","", SW_HIDE);
Q: 如何用系統查找功能來查找指定文件？ ShellExecute(m_hWnd,"find","d:\\nish",
    NULL,NULL,SW_SHOW);
如何禁止/啟用系統熱鍵
SystemParametersInfo(SPI_SETSCREENSAVERRUNNING,true,&bOld,SPIF_UPDATEINIFILE);
SystemParametersInfo(SPI_SETSCREENSAVERRUNNING,false,&bOld,SPIF_UPDATEINIFILE);

9如何隱藏/顯示WINDOWS系統任務欄
::ShowWindow  (::FindWindow("Shell_TrayWnd",NULL),SW_HIDE);
::ShowWindow  (::FindWindow("Shell_TrayWnd",NULL),SW_SHOW);

10誰能告訴我怎樣得到任務欄的高度嗎 [所有相關帖子]
HWND hwnd=::FindWindow("Shell_TrayWnd",NULL);
if(hwnd)
{
    CRect rect;
    ::GetWindowRect(hwnd,&rect);
    CString s;
    s.Format("%d",rect.Height());
    AfxMessageBox(s);
}

11怎樣將當前進程名在任務管理器中隱藏？ [所有相關帖子]
void CHideProcessDlg::OnHide()
{
    UpdateData(TRUE);
    HINSTANCE hDLL;
    LPREGISTERSERVICEPROCESS lpRegisterServiceProcess;

    //加載RegisterServiceProcess函數所在的鏈接庫
    hDLL = LoadLibrary("KERNEL32");

    //得到RegisterServiceProcess函數的地址
    lpRegisterServiceProcess = (LPREGISTERSERVICEPROCESS)GetProcAddress(hDLL, "RegisterServiceProcess");

    //執行RegisterServiceProcess函數，在任務列表中隱藏程序
    lpRegisterServiceProcess(GetCurrentProcessId(),1);

    //卸載鏈接庫
    FreeLibrary(hDLL);

    //設定定時器
    SetTimer(0,m_nSeconds*1000,NULL);
    //隱藏程序的同時，隱藏窗口
    ShowWindow(SW_HIDE);
}
12螺旋線
void CSingerDlg::OnBesselOk()
{
    // TODO: Add your control notification handler code here
    CDC *pDC;
    pDC=GetDC();
   
    ////////////////////
    CRect rect;
   
    GetClientRect(&rect);
    //////////////////
   
    UpdateData(true);
    v=m_edit_v1;
    x1=m_edit_x1;
    x2=m_edit_x2;
    //////////////////
   
    double x0=rect.left+162,y0=(rect.top-rect.bottom+75)/2+rect.bottom-60;
    pDC->MoveTo(x0,BesselJ(v,x1)*(rect.top-rect.bottom+75)/2);
    double delta=0.2,x=0,y=0;          
    do
    {   
        y=BesselJ(v,x1+x)*(rect.top-rect.bottom+75)/2;
        if((x1-x2)>=0)
        {   
            MessageBox("請輸入計算范圍！");
            break;
        }else    pDC->LineTo(x0+x/(x2-x1)*(rect.right-rect.left-170),y+y0);
        x=x+delta;
    }while(x<=x2);
}

13全屏顯示
void CMainFrame::OnFullScreen()
{
    GetWindowPlacement(&m_OldWndPlacement);
    CRect WindowRect;
    GetWindowRect(&WindowRect);
    CRect ClientRect;
    RepositionBars(0, 0xffff, AFX_IDW_PANE_FIRST, reposQuery,&ClientRect);
    ClientToScreen(&ClientRect);

    //獲取屏幕的分辨率
    int nFullWidth=GetSystemMetrics(SM_CXSCREEN);
    int nFullHeight=GetSystemMetrics(SM_CYSCREEN);

    /*將除控制條外的客戶區全屏顯示到從(0,0)到
    (nFullWidth, nFullHeight)區域,將(0,0)和(nFullWidth, nFullHeight)
    兩個點外擴充原窗口和除控制條之外的客戶區位置間的差值,
    就得到全屏顯示的窗口位置*/
    m_FullScreenRect.left=WindowRect.left-ClientRect.left;
    m_FullScreenRect.top=WindowRect.top-ClientRect.top;
    m_FullScreenRect.right=WindowRect.right - ClientRect.right+nFullWidth;
    m_FullScreenRect.bottom=WindowRect.bottom - ClientRect.bottom+nFullHeight;

    //設置全屏顯示標志為 TRUE
    m_bFullScreen=TRUE;

    //進入全屏顯示狀態
    WINDOWPLACEMENT wndpl;
    wndpl.length=sizeof(WINDOWPLACEMENT);
    wndpl.flags=0;
    wndpl.showCmd=SW_SHOWNORMAL;
    wndpl.rcNormalPosition=m_FullScreenRect;
    SetWindowPlacement(&wndpl);
}