In my user control\'s paint handler I iterate over a collection of predefined Bitmap objects and draw them to the client area thusly:
I\'m drawing directly to the screen using BitBlt and Ge开发者_开发技巧tDC(IntPtr.Zero).Is there some way to call Refresh or Invalidate on the whole screen when I\'m done, so that I don\'t leave big ch
I have written some c++ code to capture a window to a .bmp file. BITMAPFILEHEADER get_bitmap_file_header(int width, int height)
I have identified this call as a bottleneck in a high pressure function. graphics.DrawImage(smallBitmap, x , y);
I\'m trying to use this code to draw a Bitmap directly onto a PictureBox: Bitmap bmp = (Bitmap)Bitmap.FromFile(@\"C:\\Users\\Ken\\Desktop\\Load2.bmp\");
Does anyone know how to use Win32\'s BitBlt() using Ruby?It seems like you need to use a destination DC (device context) and how can Ruby handle that?I use GetPixel() and it is really slow even to get
Does anyone know how I can use an HBITMAP variable to write a png or jpeg file? I first looked into doing this with GDI+ but it gives me errors telling me min/max h开发者_如何学运维aven\'t been defin
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