July 23rd, 2013, 09:01 AM
Merging two Gdiplus::Bitmap into one c++
I'm trying to merge two Gdiplus::Bitmap and save result to disk.
pbmBitmap - is Gdiplus::Bitmap
At start i was trying to copy one bitmap into another and save copied bitmap to disk. Here is my code:
It should work, but i get 24kb black bitmap.
pbmBitmap->GetHBITMAP(Color::White, &bitmapSource); //create HBITMAP from Gdiplus::Bitmap
HDC dcDestination = CreateCompatibleDC(NULL); //create device contex for our destination bitmap
HBITMAP HBitmapDestination = CreateCompatibleBitmap(dcDestination, pbmBitmap->GetWidth(), pbmBitmap->GetHeight()); //create HBITMAP with correct size
SelectObject(dcDestination, dcDestination); //select created hbitmap on our destination dc
HDC dcSource = CreateCompatibleDC(NULL); //create device contex for our source bitmap
SelectObject(dcSource, bitmapSource); //select source bitmap on our source dc
BitBlt(dcDestination, 0, 0, pbmBitmap->GetWidth(), pbmBitmap->GetHeight(), dcSource, 0, 0, SRCCOPY); //copy piece of bitmap with correct size
SaveBitmap(dcDestination, HBitmapDestination, "OMG.bmp"); //not working i get 24kb bitmap
//SaveBitmap(dcSource, bitmapSource, "OMG.bmp"); //works like a boss, so it's problem with SaveBitmap function
SaveBitmap is my custom function, it works when i try save source bitmap.
Why i can't copy one bitmap to another??
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