Hi
Please tell me how to create a bitmap. Draw on it and how to save that bitmap to a bmp file.
I done following : on a button click event. -
CDC* pDC = GetDC();
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CDC memDC;
-
CBitmap newbmp;
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CImage img;
-
CBrush brush;
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brush.CreateSolidBrush(RGB(0, 0, 255));
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pDC->SelectObject(&brush);
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memDC.CreateCompatibleDC(pDC);
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btmap.CreateCompatibleBitmap(&memDC, 300, 300);
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pDC->Rectangle(10, 10, 80, 80);
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pDC->Ellipse(60,60,220,220);
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memDC.SelectObject(&newbmp);
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memDC.BitBlt(0,0,300,300,pDC,0,0,SRCCOPY);
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CString loc("C:\\atest.bmp");
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LPCTSTR bmp = (LPCTSTR)loc;
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img.Attach(newbmp);
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img.Save(bmp,Gdiplus::ImageFormatBMP);
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ReleaseDC(pDC);
-
But all do just get the window details and save it. If there a window above that it will also draw that.
Every thing we draw with pDC come on the screen. Such that is there any way to draw to CDC of bitmap (similar to CDC pDC = GetDC();). And when we save it then only what we draw on that CDC should be saved, nothing more.
Please reply immediatly ..
Thanks in advance
Aqeek
1  5824  Banfa 9,065
Recognized Expert Moderator Expert
Instead of pDC->Rectangle call memDC->Rectangle, but only after you have selected the bitmap into the memDC. Same for Eclipse. Don't call memDC.BitBlt.
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