After writing BMP file, image is flipped upside down

Question

I am using the following code:

f = fopen( _stringhelper.STR(\"%s.bmp\", filename), \"wb\" );
if( !f ) {
    _core.Error( ERC_ASSET, \"ncImageLoader::CreateIm         


        

Answer 1

Bitmaps are stored "upside-down", see more about that here:

Why are bmps stored upside down?

You could set the height as a negative value to have it displayed correctly. (-height)

From MSDN site, BITMAPINFOHEADER:

If biHeight is negative, the bitmap is a top-down DIB with the origin at the upper left corner.