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Ò»¡¢Èȼü¹ÜÀíDLL
Õâ¸öDLLʵ¼ÊÉÏÊÇÒ»¸ö¼üÅ̹³×Ó£¬ÓÉËüÀ´¼àÊÓϵͳµÄ¼üÅÌʼþ¡£Èç¹ûÓкͳÌÐòµÇ¼Ç·ûºÏµÄ°´¼üºÍ°´¼ü×éºÏ¾Í֪ͨ¸Ã³ÌÐòµÄ´°¿Ú¡£ÎªÁËÓ¦Ó÷½±ã£¬ÎÒ°ÑËü×ö³ÉÁËÒ»¸ö±ê×¼µÄ¹ÜÀí¿âÀ´ÎªÆäËüµÄ³ÌÐòͨ¹ýÈȼü·þÎñ£¬ËüÓÐÁ½¸öÊä³öº¯Êý£ºAddHotkeyºÍDeleteHotkey£¬³ÌÐòÖ»ÐèÒªµ÷ÓÃÕâÁ½¸öº¯Êý¾Í¿ÉÒÔÁË£¬Èç¹û±àÒëÖ®ºó²»ÓøıäÈȼü£¬ÔòÖ»ÐèÒªAddHotkey¾Í¿ÉÒÔÁË¡£

1. È«¾Ö±äÁ¿

ËùÓеÄÈ«¾Ö±äÁ¿¶¼·ÅÔÚÒ»¸ö¹²Ïí¶ÎÖУ¬¶¨ÒåÈçÏ£º

#pragma data_seg("shareddata"
    HHOOK hHook =NULL; //¹³×Ó¾ä±ú
    UINT nHookCount =0; //¹Ò½ÓµÄ³ÌÐòÊýÄ¿
    static UCHAR HotKey[MAX_KEY] = {0}; //ÈȼüÐéÄâ¼üÂë
    static UCHAR HotKeyMask[MAX_KEY] = {0}; //×éºÏÑÚÂë, control=4,alt=2,shift=1 ¿ÉÒÔ¡°»ò¡±
    static HWND hCallWnd[MAX_KEY] = {0}; //window handle associated with hotkey
    static int KeyCount =0;
    static UCHAR MaskBits =0; //00000 Ctrl=4 & Alt=2 & Shift=1
#pragma data_seg()
¹ØÓÚ¹²Ïí¶Î£¬Óм¸µãÖØÒªµÄ˵Ã÷£º
a. ±ØÐëÔÚÁ´½ÓÑ¡ÏîÀïÖ¸¶¨¸Ã¶ÎΪ¹²Ïí£¬project->settings->link->object/library£¬¼ÓÉÏ/section:shareddata,rws
b. µÚ¶þÖÖÖ¸¶¨¹²Ïí¶ÎµÄ·½·¨£ºÔÚdefÎļþµÄsectionsÀï¼ÓÉÏÒ»¾äshareddata read write shared
c. µÚÈýÖÖÖ¸¶¨¹²Ïí¶ÎµÄ·½·¨£ºÔÚ³ÌÐòÀï¼ÓÉÏÒ»¾ä#pragma comment(linker,"section:shareddata,rws"
d. ËùÓеıäÁ¿±ØÐë³õʼ»¯£¬·ñÔòÁ´½Ó³ÌÐò»á°ÑËü·Åµ½ÆÕͨÊý¾Ý¶Î
e. Èç¹û²»³õʼ»¯±äÁ¿£¬ÐèÒªÔÚ¶ÎÍâÓá°__declspec(allocate("shareddata") ±äÁ¿ÀàÐÍ ±äÁ¿Ãû¡±µÄ·½Ê½¶¨Òå

2. Á½¸öÊä³öº¯ÊýÈçÏ£º

//Ìí¼ÓÈȼü£¬Èç¹ûcKeyºÍcMask¾ùΪ0Ôò¼àÊÓËùÓа´¼üʼþ
BOOL __declspec(dllexport) __stdcall AddHotkey(HWND hWnd,UCHAR cKey,UCHAR cMask)  
{
    BOOL bAdded=FALSE;
    for(int index=0;index
      //ɾ³ýÈȼü
BOOL __declspec(dllexport) __stdcall DeleteHotkey(HWND hWnd,UCHAR cKey,UCHAR  cMask)  
{
    BOOL bRemoved=FALSE;
    for(int index=0;index
      3. ¹³×Óº¯ÊýÈçÏ£º
      LRESULT CALLBACK KeyboardProc(int nCode,WPARAM wParam,LPARAM lParam)
{  
    BOOL bProcessed=FALSE;
    if(HC_ACTION==nCode)
    {
        if((lParam&0xc0000000)==0xc0000000){// ÓмüËÉ¿ª
          switch(wParam)
          {
          case VK_MENU:
          MaskBits&=~ALTBIT;
          break;
          case VK_CONTROL:
          MaskBits&=~CTRLBIT;
          break;
          case VK_SHIFT:
          MaskBits&=~SHIFTBIT;
          break;
          default: //judge the key and send message
          break;
          }
          for(int index=0;index
      ÕâÑù£¬Èȼü¹ÜÀíµÄDLL¾Í×öºÃÁË£¬ÎÒÃǾͿÉÒÔÔÚ³ÌÐòÀïµ÷ÓÃAddHotkeyÁË
      ¶þ¡¢×¥Í¼³ÌÐò
        ×¥Í¼³ÌÐòÊÇÒ»¸ö»ùÓÚ¶Ô»°¿òµÄ³ÌÐò£¬ËüÔÚ½¨Á¢¶Ô»°¿òµÄʱºòµ÷ÓÃÇ°ÃæµÄDLL£¬µÇ¼ÇÈȼü
      1. Ìí¼Óhook.libµ½¹¤³ÌÀÔÚ³ÌÐòÀï¸ø³öÁ½¸öDLLº¯ÊýµÄ¶¨Ò壬Ҳ¿ÉÒÔд¸öÍ·Îļþ£¬ÔÙ°üº¬½øÀ´
      BOOL __declspec(dllexport)__stdcall AddHotkey(HWND,UCHAR key,UCHAR mask);
BOOL __declspec(dllexport)__stdcall DeleteHotkey(HWND,UCHAR key,UCHAR mask);
      Ò²¿ÉÒÔÓö¯Ì¬ÔØÈëµÄ°ì·¨µ÷ÓÃ
      2. Ìí¼Ó¶ÔÈȼü֪ͨʼþµÄÏìÓ¦£¬³ÌÐòÖÐÓõİ취ÊÇÖØÔØWindowProc
      LRESULT CCaptureDlg::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)   
{
    if(message==WM_HOTKEY&&lParam==WM_KEYDOWN){ //lParam±íʾÊǰ´Ï»¹ÊÇËÉ¿ª£¬Èç¹ûÓжà¸öÈȼü£¬ÓÉwParamÀ´Çø·Ö
      SaveBmp();
      return FALSE;
    }
    ¡­¡­ //ÆäËü´¦Àí¼°Ä¬ÈÏ´¦Àí
}
      3. ±£´æÆÁÄ»
      ±£´æÆÁÄ»Óɺ¯ÊýSaveBmpÍê³É£¬ÈçÏ£º
      void CCaptureDlg::SaveBmp()
{
CDC dc;
dc.CreateDC("DISPLAY",NULL,NULL,NULL);
CBitmap bm;
int Width=GetSystemMetrics(SM_CXSCREEN);
int Height=GetSystemMetrics(SM_CYSCREEN);
bm.CreateCompatibleBitmap(&dc,Width,Height);
CDC tdc;
tdc.CreateCompatibleDC(&dc);
CBitmap*pOld=tdc.SelectObject(&bm);
tdc.BitBlt(0,0,Width,Height,&dc,0,0,SRCCOPY);
tdc.SelectObject(pOld);
BITMAP btm;
bm.GetBitmap(&btm);
DWORD size=btm.bmWidthBytes*btm.bmHeight;
LPSTR lpData=(LPSTR)GlobalAllocPtr(GPTR,size);
/////////////////////////////////////////////
BITMAPINFOHEADER bih;
bih.biBitCount=btm.bmBitsPixel;
bih.biClrImportant=0;
bih.biClrUsed=0;
bih.biCompression=0;
bih.biHeight=btm.bmHeight;
bih.biPlanes=1;
bih.biSize=sizeof(BITMAPINFOHEADER);
bih.biSizeImage=size;
bih.biWidth=btm.bmWidth;
bih.biXPelsPerMeter=0;
bih.biYPelsPerMeter=0;
GetDIBits(dc,bm,0,bih.biHeight,lpData,(BITMAPINFO*)&bih,DIB_RGB_COLORS);
//bm.GetBitmapBits(size,lpData);//´Ëº¯ÊýÔÚ´¦Àí5-5-5ģʽµÄ16λɫÏ»á³öÏÖÑÕÉ«»ìÂÒ
static int filecount=0;
CString name;
name.Format("pict%04d.bmp",filecount++);
name=m_Path+name;
BITMAPFILEHEADER bfh;
bfh.bfReserved1=bfh.bfReserved2=0;
bfh.bfType=((WORD)(''M''<< 8)|''B'');
bfh.bfSize=54+size;
bfh.bfOffBits=54;
CFile bf;
if(bf.Open(name,CFile::modeCreate|CFile::modeWrite)){
bf.WriteHuge(&bfh,sizeof(BITMAPFILEHEADER));
bf.WriteHuge(&bih,sizeof(BITMAPINFOHEADER));
bf.WriteHuge(lpData,size);
bf.Close();
nCount++;
}
GlobalFreePtr(lpData);
if(nCount==1)
m_Number.Format("%d picture captured.",nCount);
else
m_Number.Format("%d pictures captured.",nCount);
UpdateData(FALSE);
}
      4. ½çÃæ´¦Àí¡£¸Ã³ÌÐòΪÁ˱ÜÃâÈȼü³åÍ»£¬²ÉÓÃÁ˶¯Ì¬ÉèÖÃÈȼüµÄ·½·¨£¬¾ßÌå½çÃæÉϵĶ«Î÷£¬¿ÉÒÔ¿´Ô´³ÌÐò
      Ô´³ÌÐòµÄ±àÒëÓëʹÓÃ:ÏȱàÒëhook.dll²¢½«Æä·ÅÔÚϵͳĿ¼£¨win2000/NTÊÇsystem32£¬98/MEÊÇsystem£©¡£
        È»ºó±àÒë¶Ô»°¿ò³ÌÐòÔËÐм´¿É£¡

[ Last edited by »ÃÓ°ÎÞºÛ on 2006-11-27 at 08:18 ]
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