发信人: skyice()
整理人: wenbobo(2002-12-27 15:53:04), 站内信件
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void DrawTransparentBitmap(CDC * pDC,int x,int y,
UINT id,COLORREF crColor)
// x,y 是要显示的图象的位置，id 是要显示的位图资源的ID
// crColor 是要显示位图的背景色
{
COLORREF crOldBack=pDC->SetBkColor(RGB(255,255,255));
COLORREF crOldText=pDC->SetTextColor(RGB(0,0,0));
CDC dcImage,dcMask;
CBitmap bmp;
BITMAP bm;
bmp.LoadBitmap(id);
bmp.GetBitmap(&bm);
int nWidth=bm.bmWidth,nHeight=bm.bmHeight;
dcImage.CreateCompatibleDC(pDC);
dcMask.CreateCompatibleDC(pDC);
CBitmap * pOldBitmapImage=dcImage.SelectObject(&bmp);
CBitmap bitmapMask;
bitmapMask.CreateBitmap(nWidth,nHeight,1,1,NULL);
CBitmap * pOldBitmapMask=dcMask.SelectObject(&bitmapMask);
dcImage.SetBkColor(crColor);
dcMask.BitBlt(0,0,nWidth,nHeight,&dcImage,0,0,SRCCOPY);
pDC->BitBlt(x,y,nWidth,nHeight,&dcImage,0,0,SRCINVERT);
pDC->BitBlt(x,y,nWidth,nHeight,&dcMask,0,0,SRCAND);
pDC->BitBlt(x,y,nWidth,nHeight,&dcImage,0,0,SRCINVERT);
dcImage.SelectObject(pOldBitmapImage);
dcMask.SelectObject(pOldBitmapMask);
pDC->SetBkColor(crOldBack);
pDC->SetTextColor(crOldText);
}
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※ 修改:．skyice 于 Jan 23 19:51:03 修改本文．[FROM: 202.99.75.247]
※ 来源:．月光软件站 http://www.moon-soft.com．[FROM: 202.99.75.247]
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