内存像素值采用CreateBitmap显示不正常的解决方法

用CreateBitmap 从内存像素值创建位图,原来正常,但在改变屏幕色深后图像黑色,原代码如下:

BYTE bmpBuf[PICTURESIZE];
HANDLE hProcess = NULL;
HBITMAP hbmp;
hProcess = OpenProcess(PROCESS_VM_OPERATION|PROCESS_VM_WRITE|PROCESS_VM_READ,FALSE,pVPList->dwPID);
if(hProcess == NULL) 
{
	return;
}
memset(bmpBuf,0,sizeof(bmpBuf));//设置成黑色
ReadProcessMemory(hProcess, (HANDLE)Info.dwDrawingAddr, &bmpBuf,PICTURESIZE, NULL);//读取位图到BUFFER
CloseHandle(hProcess);
hbmp=CreateBitmap(500,100,1,16,bmpBuf);

这是因为创建的位图与WINDOS的色深不一致,可以通过改用CreateDIBitmap 来解决:

代码如下:

BYTE bmpBuf[PICTURESIZE];
HANDLE hProcess = NULL;
HBITMAP hbmp;
hProcess = OpenProcess(PROCESS_VM_OPERATION|PROCESS_VM_WRITE|PROCESS_VM_READ,FALSE,pVPList->dwPID);
if(hProcess == NULL) 
{
	return;
}
memset(bmpBuf,0,sizeof(bmpBuf));//设置成黑色
ReadProcessMemory(hProcess, (HANDLE)Info.dwDrawingAddr, &bmpBuf,PICTURESIZE, NULL);//读取位图到BUFFER
CloseHandle(hProcess);
CPaintDC dc(this);
HDC   hDC   =  dc.GetSafeHdc(); 
BITMAPINFOHEADER fmtFrame =   {sizeof(BITMAPINFOHEADER),   0,   0,   1,   16,   BI_RGB,   0,   0,   0,   0,   0};
	fmtFrame.biWidth =   500;
	fmtFrame.biHeight =   -100;
	fmtFrame.biSizeImage =384*100*2;		
hbmp=::CreateDIBitmap(dc.m_hDC,(BITMAPINFOHEADER FAR*)&(fmtFrame),CBM_INIT,bmpBuf,(LPBITMAPINFO)&fmtFrame,DIB_RGB_COLORS);//建立位图