WHen I read a jpeg file of size about 600x400 pixels using gdiplus like this,
GdipCreateBitmapFromFile fn BMP GdipGetImageWidth BMP w GdipGetImageHeight BMP h rt=. 0 0, w, h GdipBitmapLockBits BMP rt ImageLockModeRead PixelFormat32bppARGB DATA 'w h s f p r'=. DATA the member stride inside bitmapdata is negative, and its data buffer cannot be read successfully. when using native gdiplus that stride is positive, and it work ok. wine said itself cannot handle negitive stride yet so why itself create a bitmap wih negative stride in GdipCreateBitmapFromFile?
