Bmp位图图片颜色替换

替换前：

void CPicColorDlg::OnButton2()
{
 // TODO: Add your control notification handler code here
  // TODO: Add your control notification handler code here
 CDC* pDC = AfxGetApp()->m_pMainWnd->GetDC();
 CBitmap   bitMap;  
    HBITMAP   hBitMap   =   (HBITMAP)LoadImage(NULL,  "bitmap1.bmp", IMAGE_BITMAP,0,0,LR_LOADFROMFILE);
 bitMap.Attach(hBitMap);   
 CDC   dcBit;  
 dcBit.CreateCompatibleDC(pDC);     
 dcBit.SelectObject(&bitMap);  
 BITMAP   bminfo;  
 bitMap.GetObject(sizeof(bminfo),&bminfo);  
 pDC->BitBlt(50,50,bminfo.bmWidth,bminfo.bmHeight,&dcBit,0,0,SRCCOPY);
    DeleteObject(bitMap); 
}

 

替换后：

void CPicColorDlg::OnButton1()
{
 // TODO: Add your control notification handler code here
 CDC* pDC = AfxGetApp()->m_pMainWnd->GetDC();
 CBitmap   bitMap;  
    HBITMAP   hBitMap   =   (HBITMAP)LoadImage(NULL,  "bitmap1.bmp", IMAGE_BITMAP,0,0,LR_LOADFROMFILE);
 bitMap.Attach(hBitMap);   
 CDC   dcBit;  
 dcBit.CreateCompatibleDC(pDC);     
 dcBit.SelectObject(&bitMap);  
 BITMAP   bminfo;  
 bitMap.GetObject(sizeof(bminfo),&bminfo);  

 COLORREF clr,clr2,clr3;
 clr = RGB(255,0,0);   //被替换的颜色
 clr2 = RGB(0,0,255); //替换颜色
 for(int i=0; i<bminfo.bmWidth; i++)
 {
  for(int j=0; j<bminfo.bmHeight; j++)
  {
   clr3 = dcBit.GetPixel(i,j);
   if(clr3==clr)
   {
    dcBit.SetPixel(i,j,clr2);
   }
  }
 }
 pDC->BitBlt(50,50,bminfo.bmWidth,bminfo.bmHeight,&dcBit,0,0,SRCCOPY);

    DeleteObject(bitMap);  
}