对于warning C4005: 'WINVER' : macro redefinition的处理 在Windows.h中有如下定义：     #ifndef   WINVER     #define   WINVER   0x0400     #endif     如果你把#define   WINVER   0x500置于#include   
     
      之前,就不会出现警告.
     

需要包含的文件：#include "Winuser.h"

HCURSOR GetCur(){    CURSORINFO hCur;//	HCURSOR hCur;    ZeroMemory(&hCur,sizeof(hCur));    hCur.cbSize=sizeof(hCur);    GetCursorInfo(&hCur);    return hCur.hCursor;}void CMy123Dlg::OnButton1() {	Sleep(2000);	//warning:   this   code   snippet   is   not   bullet   proof. 	HCURSOR   hcur   =   GetCur();//::GetCursor(); 		if(hcur==NULL) 		return; 	ICONINFO     icon; 	::GetIconInfo(hcur,&icon); 	HBITMAP   hbmp; 	BITMAP   bm; 	::GetObject(icon.hbmMask,sizeof(BITMAP),&bm); 		HDC   hGlobal,hDCMask,hDCColor; 	hGlobal   =   ::GetDC(NULL); 	hDCMask   =   ::CreateCompatibleDC(hGlobal); 	hDCColor  =   ::CreateCompatibleDC(hGlobal); 	hbmp	  =   ::CreateCompatibleBitmap(hGlobal,bm.bmWidth,bm.bmWidth); 	::SelectObject(hDCColor,hbmp); 		::FloodFill(hDCColor,0,0,RGB(255,255,255));//背景色 	::SelectObject(hDCMask,icon.hbmMask); 	::BitBlt(hDCColor,0,0,bm.bmWidth,bm.bmWidth,hDCMask,0,0,SRCAND); 	if   (icon.hbmColor   ==   NULL) 		::BitBlt(hDCColor,0,0,bm.bmWidth,bm.bmWidth,hDCMask,0,bm.bmWidth,SRCINVERT); 	else 	{ 		::SelectObject(hDCMask,icon.hbmColor); 		::BitBlt(hDCColor,0,0,bm.bmWidth,bm.bmWidth,hDCMask,0,0,SRCINVERT); 	} 		PICTDESC   picdesc; 	picdesc.cbSizeofstruct   =   sizeof(PICTDESC); 	picdesc.picType   =   PICTYPE_BITMAP   ;                         	picdesc.bmp.hbitmap   =   hbmp; 	IPicture*   pPicture=NULL; 	OleCreatePictureIndirect(&picdesc,   IID_IPicture,   TRUE,(VOID**)&pPicture); 	LPSTREAM   pStream; 	CreateStreamOnHGlobal(NULL,TRUE,&pStream); 	LONG   size; 	HRESULT   hr=pPicture-> SaveAsFile(pStream,TRUE,&size); 	char   pathbuf[1024]; 	strcpy(pathbuf, "c:\\myarrow.bmp "); 		FILE   *stream; 	stream   =   fopen(   pathbuf,   "w "   ); 	LARGE_INTEGER   li; 	li.HighPart   =0; 	li.LowPart   =0; 	ULARGE_INTEGER   ulnewpos; 	pStream-> Seek(   li,STREAM_SEEK_SET,&ulnewpos); 	ULONG   uReadCount   =   1; 	while(uReadCount> 0) 	{ 				pStream-> Read(pathbuf,sizeof(pathbuf),&uReadCount); 		if(uReadCount> 0) 			fwrite(   pathbuf,sizeof(char),uReadCount,stream); 	} 	pStream-> Release(); 	fclose(   stream   ); 		::DeleteObject(icon.hbmMask); 	if   (icon.hbmColor   !=   NULL) 		::DeleteObject(icon.hbmColor); 	::DeleteObject(hbmp); 	::ReleaseDC(NULL,hDCMask); 	::ReleaseDC(NULL,hDCColor); 	::ReleaseDC(NULL,hGlobal);	AfxMessageBox(_T("OK"));}

CBitmap   bmp; CDC   memDC; memDC.CreateCompa... memDC.SelectObiect(bmp) memDC.GetPixel(x,   y)