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jianc — Tue, 29 May 2012 10:52:00 GMT

要实现对话框淡入��出效果, �q�是挺简单的, 说白�? ��是在对话框初始化时候加个定时器, 在对话框销毁前也加个定时器, 定时器的操作, 无非��是更新对话框界面的透明�? 要改变对话框的透明�? 用一个API��搞定了:SetLayeredWindowAttributes

�? 思�\��是�q�样, �q�里上关键代码吧

typedef BOOL (__stdcall *FunSetLayeredWindowAttributes)(HWND hwnd, COLORREF crKey, BYTE bAlpha, DWORD dwFlags);
FunSetLayeredWindowAttributes funSetLayeredWindowAttributes;
funSetLayeredWindowAttributes = (FunSetLayeredWindowAttributes)GetProcAddress(GetModuleHandle("user32.dll"), "SetLayeredWindowAttributes");ModifyStyleEx(NULL, 0x80000/*WS_EX_LAYERED*/); //�H�口要有WS_EX_LAYERED属性才能用讄��透明的那个API

enum{IDT_SHOW = 100, IDT_EXIT = 101};

在OnInitDialog�Ҏ(gu��)��里面��d��一个定时器

SetTimer(IDT_SHOW, 50, NULL);

同样, 在OnCancel�Ҏ(gu��)��里面��d��一个定时器, ��Z��把IDT_SHOW定时器给KILL�?br />

KillTimer(IDT_SHOW);
SetTimer(IDT_EXIT, 50, NULL);

OnTimer�Ҏ(gu��)��q�样�?

switch(nIDEvent)
{
case IDT_SHOW:
    funSetLayeredWindowAttributes(this->m_hWnd, 0, m_current % 255, 2);
    m_current += 5;

    if(m_current >= 255)
        KillTimer(IDT_SHOW);
    break;
case IDT_EXIT:
    m_current -= 5;
    funSetLayeredWindowAttributes(this->m_hWnd, 0, m_current % 255, 2);
    if(m_current <= 5)
    {
        CDialog::OnCancel();
        KillTimer(IDT_EXIT);
    }
    break;
}

很简单吧, 一个��E入浅出效果就出来�?br />
�?
static控�g背景透明
��d��WM_CTLCOLOR消息映射

ON_WM_CTLCOLOR()
��d��响应函数

afx_msg HBRUSH OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor);

实现响应函数

if(IDS_STATIC == pWnd->GetDlgCtrlID())
{
pDC->SetBkMode(TRANSPARENT);
return (HBRUSH)::GetStockObject(NULL_BRUSH);
}

�q�里, ��装了一个基�c? 方便以后�?br />FadeIODlg.h

#pragma once

class CFadeIODlg : public CDialog
{
    DECLARE_MESSAGE_MAP()
public:
    CFadeIODlg(UINT uDLGID, CWnd* pParent = NULL);
    virtual ~CFadeIODlg();

protected:
    virtual void DoDataExchange(CDataExchange* pDX);
    virtual void OnCancel();
    virtual void OnOK();

    afx_msg BOOL OnInitDialog();
    afx_msg void OnTimer(UINT nIDEvent);

private:
    enum{ TIME_BEGIN = 100, TIME_END = 101};
    typedef BOOL (__stdcall *FUNSetLayeredWindowAttributes)(HWND hwnd, COLORREF crKey, BYTE bAlpha, DWORD dwFlags);
    FUNSetLayeredWindowAttributes m_funTransparent;

    enum{
        MAX_TRANSPARENT = 255,        //最大透明�?/span>
        NUM_BEGIN = 10,                //开始计时器旉��间隔
        NUM_END = 10,                //�l�束计时器时间间�?/span>
        NUM_CHANGE = 5,                //改变透明�?/span>
    };

    int            m_currentTransparent;    //当前�H�口透明�?/span>
};

FadeIODlg.cpp

#include "stdafx.h"
#include "UI.h"
#include "FadeIODlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

CFadeIODlg::CFadeIODlg(UINT uDLGID, CWnd* pParent /* = NULL */)
    : CDialog(uDLGID, pParent)
{}

CFadeIODlg::~CFadeIODlg()
{}

void CFadeIODlg::DoDataExchange(CDataExchange* pDX)
{
    CDialog::DoDataExchange(pDX);
}

BEGIN_MESSAGE_MAP(CFadeIODlg, CDialog)
    ON_WM_TIMER()
END_MESSAGE_MAP()

BOOL CFadeIODlg::OnInitDialog()
{
    CDialog::OnInitDialog();
    ModifyStyleEx(0, 0x80000);
    m_currentTransparent = 0;
    m_funTransparent = (FUNSetLayeredWindowAttributes)GetProcAddress(GetModuleHandle("User32.dll"), "SetLayeredWindowAttributes");
    if(m_funTransparent)
    {
        //m_funTransparent(this->GetSafeHwnd(), 0, 0, 2);
        SetTimer(TIME_BEGIN, NUM_BEGIN, NULL);
    }

    return TRUE;
}

void CFadeIODlg::OnTimer(UINT nIDEvent)
{
    switch(nIDEvent)
    {
    case TIME_BEGIN:
        if(m_currentTransparent <= MAX_TRANSPARENT)
        {
            m_funTransparent(this->GetSafeHwnd(), 0, m_currentTransparent, 2);
            m_currentTransparent += NUM_CHANGE;
        }
        else
            KillTimer(TIME_BEGIN);
        break;
    case TIME_END:
        if(m_currentTransparent >= 0)
        {
            if(m_currentTransparent > MAX_TRANSPARENT)
                m_currentTransparent = MAX_TRANSPARENT;
            m_funTransparent(this->GetSafeHwnd(), 0, m_currentTransparent, 2);
            m_currentTransparent -= NUM_CHANGE;
        }
        else
        {
            KillTimer(TIME_END);
            CDialog::OnCancel();
        }
        break;
    }
}

void CFadeIODlg::OnOK()
{
}

void CFadeIODlg::OnCancel()
{
    if(m_funTransparent)
    {
        KillTimer(TIME_BEGIN);
        SetTimer(TIME_END, NUM_END, NULL);
    }
    else
        CDialog::OnCancel();
}

ok, 完成, 以后直接�l�承�q�个对话�? �E�微修改一�? 效果��出来了

jianc 2012-05-29 18:52 发表评论

jianc — Thu, 24 May 2012 07:59:00 GMT

本来以�ؓ, 对CreateProcessA和CreateProcessW�q�行HOOK, ��可以对�q�程的打开做一到防�U? 比如, ��L��某某文�g�q�行
但是发现没什么作�? 看了一�? kernel32.dll��实是导��Z��CreateProcessA和CreateProcessW, 但估计这两个只是转发函数, 其实调用的是NTDLL.DLL里面的ZwCreateProcess或ZwCreateProcessEx

jianc 2012-05-24 15:59 发表评论

jianc — Wed, 23 May 2012 06:23:00 GMT

一开�? 我不清楚某某原因, 我在�l�承自CWinApp的app�c�M��d��一个虚函数

virtual int ExitInstance();

然后, 当我在对话框工程退出的时�? 发现�q�个ExitInstance�Ҏ(gu��)��q�没有被调用, 我就有些�p�涂, baidu+google, ...

然后, 我就�? 我添加一个app�cȝ��析构�Ҏ(gu��)��了, 但发现这个析构函数还是诡异的没被调用...

theApp原本是一个全局对象, 它的构造和析构原本��是CRT库来处理�?br />
后来发现, 只要在theApp对象的成员I(y��)nitInstance�Ҏ(gu��)��q�回TRUE(默认是返回FALSE)��可以成功的调用ExitInstance和析构函��C��

ok, 诡异的InitInstance�q�回FALSE�? ��׃��会调用theApp对象的析�?

jianc 2012-05-23 14:23 发表评论

GDI Plus库��用基��

jianc — Thu, 17 May 2012 05:19:00 GMT

vc6使用GDI Plus库要装上Platform SDK2003

配置好库环境�? 下面写出使用GDI Plus的基本步�?
1.包含头文�?br />#include
2.使用名字�I�间
using namespace Gdiplus;
3.�q�接必要的导入库文�g
#pragma comment(lib, "gdiplus.lib")
4.初始�?br />

ULONG_PTR m_gdiplusToken;

GdiplusStartupInput m_gdiplusStartupInput;

GdiplusStartup(&m_gdiplusToken, &m_gdiplusStartupInput, NULL);

5.使用GDI Plus�?br />6.用完库后, 释放操作

GdiplusShutdown(m_gdiplusToken);

jianc 2012-05-17 13:19 发表评论

jianc — Fri, 11 May 2012 02:59:00 GMT

MFC创徏一个可通过鼠标点击客户区拖动窗口位�|�的�Ҏ(gu��)��

通过��d��消息响应函数
afx_msg UINT OnNcHitTest(CPoint point);
��d��?br />ON_WM_NCHITTEST()

然后, 定义OnNcHitTest的行为即�? OnNcHitTest的代码如�?

UINT CTimerDlg::OnNcHitTest(CPoint point)
{
    CRect rect;
    GetClientRect(rect);
    ClientToScreen(rect);

    if(rect.PtInRect(point))
        return HTCAPTION;
    return CDialog::OnNcHitTest(point);
}

首先, 发生WM_NCHITTEST消息的时�? �E�序先取得客户区的窗口矩�? �q�里用到GetClientRect�Ҏ(gu��)��得到, �׃��GetClientRect取得的是相对于窗口坐标系�l? 但OnNcHitTest的参数point却是相对于屏�q�的坐标�pȝ��, 所以这里用��C��ClientToScreen把取到的客户区矩形�{成相对于屏幕的坐�? 然后用CRect�cȝ��PtInRect�Ҏ(gu��)��判断point是否落在�q�个矩�Ş里面, 如果�? 则返回HTCAPTION(��q��当于�q�次点击是点��L��题栏), 所�? ��可以这��h��拖动�H�口�? 如果, OnNcHitTest直接�q�回HTCAPTION的话, 那么, 但用��L��击非客户区的时�? 有些功能会失�? 比如点击�pȝ��的关闭按�? 试一下就会发现这个按钮无效了; ok, 如果点击的是非客��L��, 者直接返回CDialog::OnNcHitTest(point), �q�就是按默认处理�?

以上的这个方法比较麻�? 其实可以更简单一�? 只要先调用父�cȝ��OnNcHitTest(point), 取得�q�回�? 在判断是不是HTCLIENT, 如果�? 则返回HTCAPTION, 否则直接�q�回父类OnNcHitTest(point)的返回值就ok�? 修改后如�?

UINT CTimerDlg::OnNcHitTest(CPoint point)
{
    UINT uRet = CDialog::OnNcHitTest(point);
    if(HTCLIENT == uRet)
        return HTCAPTION;
    return uRet;
}

再简化一�? ��成�q�样�?

UINT CTimerDlg::OnNcHitTest(CPoint point)
{
UINT uRet = CDialog::OnNcHitTest(point);
return (HTCLIENT == uRet) ? HTCAPTION : uRet;
}

jianc 2012-05-11 10:59 发表评论

可等待计时器内核对象

jianc — Thu, 10 May 2012 12:38:00 GMT

之前学习win32 platform sdk�~�程的时�? 有学��C��个计时器的东�? 那个挺简单的, ��是调用SetTimer创徏一个基于某个窗口回调的计时�? 既间隔时间�ɽH�口收到WM_TIMER消息, 或间隔时�? 调用我们自己定义的一个回调函�?
创徏可等待计时器内核对象, 可以实现�c�M��功能, 现在, 下边�l�出如何使用可等待计时器内核对象

1.CreateWatchDogTimer

HANDLE CreateWatchDogTimer(
  LPCWSTR pszWatchDogName,
  DWORD dwPeriod,
  DWORD dwWait,
  DWORD dwDfltAction,
  DWORD dwParam,
  DWORD dwFlags
);

2.SetWaitableTimer

BOOL WINAPI SetWaitableTimer(
  __in      HANDLE hTimer,
  __in      const LARGE_INTEGER* pDueTime,
  __in      LONG lPeriod,
  __in_opt  PTIMERAPCROUTINE pfnCompletionRoutine,
  __in_opt  LPVOID lpArgToCompletionRoutine,
  __in      BOOL fResume
);

CreateWatchDogTimer函数��是创徏一个可�{�待事�g内核对象
SetWaitableTimer函数��是讄��内核对象的触发时间和旉��间隔

废话不多说了, �q�里直接上代�?br />

void CDialogDemoDlg::OnBtnCreateTimer()
{
    SYSTEMTIME st;
    st.wYear = 2012;
    st.wDay = 10;
    st.wDayOfWeek = 0;
    st.wHour = 20;
    st.wMilliseconds = 0;
    st.wMinute = 16;
    st.wMonth = 5;
    st.wSecond = 0;

    FILETIME localft;
    FILETIME utc;
    SystemTimeToFileTime(&st, &localft);
    LocalFileTimeToFileTime(&localft, &utc);

    LARGE_INTEGER liUTC;
    liUTC.LowPart = utc.dwLowDateTime;
    liUTC.HighPart = utc.dwHighDateTime;

    m_Timer = CreateWaitableTimer(NULL, FALSE, NULL);

    SetWaitableTimer(m_Timer, &liUTC, 10 * 1000, NULL, NULL, FALSE);
}

void CDialogDemoDlg::ThreadProc2(CDialogDemoDlg* pDlg)
{
    while(1)
    {
        DWORD ret = WaitForSingleObject(pDlg->m_Timer, INFINITE);
        if(WAIT_OBJECT_0 == ret)
        {
            AfxMessageBox("可等待事件内核对象触�?");
        }
    }
}

ThreadProc2是一个线�E? 当时间一�? WaitForSingleObject��׃��q�回, 因�ؓ�q�里创徏的是一个自动复位内核对�? 说以WaitForSingleObject�q�回是会自动把内核对象复�? �q�里为演�C? 写了个死循环, 所�? 下一�ơ调用WaitForSingleObject�? 如果旉��未到, �U�程�ȝ��会被挂�v.
具体用法�l�节, MSDN
参�? windows核心�~�程

jianc 2012-05-10 20:38 发表评论

修改文�g的时间DEMO

jianc — Fri, 27 Apr 2012 11:45:00 GMT

无事, 直接上代�?br />

#include <windows.h>
#include <iostream>
using namespace std;
int main(int argc, char* argv[])
{
    FILETIME fTm;
    SYSTEMTIME sysTm;
    HANDLE hFile;
    hFile = CreateFile("d:/test.txt", GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_ARCHIVE, NULL);
    if(INVALID_HANDLE_VALUE == hFile)
    {
        cout << "no" <<endl;
    }
    GetLocalTime(&sysTm);
    sysTm.wYear = 2013;
    SystemTimeToFileTime(&sysTm, &fTm);
    BOOL bRet = SetFileTime(hFile, &fTm, &fTm, &fTm);
    int ret = GetLastError();
    if(bRet)
    {
        cout << "ok" <<endl;
    }
    return 0;
}

主要调用SystemTimeToFileTime

jianc 2012-04-27 19:45 发表评论

jianc — Sun, 01 Apr 2012 06:47:00 GMT

BOOL CALLBACK EnumWindowsProc(HWND hwnd, LPARAM lParam)
{
    TCHAR szBuf[4096];
    GetClassName(hwnd, szBuf, sizeof(szBuf));
    string str = szBuf;
    if(!str.compare("#32770"))
    {
        HWND hSubWnd = GetDlgItem(hwnd, 0xffff);
        if(hSubWnd)
        {
            int len = GetWindowText(hSubWnd, szBuf, sizeof(szBuf));
            cout << "yes:" <<szBuf <<endl;
        }
    }
    return TRUE;
}

int main()
{
    EnumWindows(EnumWindowsProc, NULL);
    return 0;
}

jianc 2012-04-01 14:47 发表评论

91麻豆国产精品91久久久,人妻无码αv中文字幕久久琪琪布,日韩欧美亚洲综合久久

GDI Plus库��用基���

可等待计时器内核对象

修改文�g的时间DEMO

GDI Plus库��用基��