displayddb.cpp

精通VC++图像编程的源码

//本函数用以显示指定的DDB

BOOL CimageView::DisplayDDB(CDC* pDC,UINT nIDResource )
{
	CBitmap Bitmap, *pOldBitmap;
	BITMAP bm;
	CDC MemDC;

	if(!Bitmap.LoadBitmapW(nIDResource))
		return FALSE;

	Bitmap.GetObject(sizeof(BITMAP),&bm);

	if(! MemDC.CreateCompatibleDC(pDC))
	return FALSE;

	pOldBitmap = (CBitmap*)MemDC.SelectObject(&Bitmap);
	pDC->BitBlt(0,0,bm.bmWidth,bm.bmHeight,&MemDC,0,0,SRCCOPY);
	MemDC.SelectObject(pOldBitmap);
	return TRUE;
}