C++ Getting RGB from hBitmap

Question

Working with bitmaps is very new to me so I\'ve been really struggling with the online tutorials and strategies that I\'ve read through. Basically my goal is to scan the screen

Answer 1

Your image size is specified in pixels, it should be specified in bytes

**bmi.biSizeImage = ScreenX * ScreenY;**
**bmi.biBitCount = 24;**
bmi.biWidth = ScreenX;
bmi.biHeight = -ScreenY;
**bmi.biCompression = BI_RGB;**

biSizeImage its defined units are bytes and you are specifying RGB 3 bytes per pixel.

http://msdn.microsoft.com/en-us/library/windows/desktop/dd183376(v=vs.85).aspx

biSizeImage The size, in bytes, of the image. This may be set to zero for BI_RGB bitmaps.