Reply To: BitDepth Set for B/W (C#)

[kitchenam]

I thought I’d post the working SaveDIBAs method code for reference if anyone else runs across this issue.

public static bool SaveDIBAs( string fileName, IntPtr bminfo, IntPtr pixdat )

{



Guid clsid;

if( ! GetCodecClsid( fileName, out clsid ) )

{

MessageBox.Show( "Unknown picture format for extension " + Path.GetExtension( fileName ), "Image Codec", MessageBoxButtons.OK, MessageBoxIcon.Information );



return false;

}



IntPtr img = IntPtr.Zero;

int st = GdipCreateBitmapFromGdiDib( bminfo, pixdat, ref img );

if( (st != 0) || (img == IntPtr.Zero) )

return false;



// obtain managed bitmap image from gdiplus dll

MethodInfo mi = typeof(Bitmap).GetMethod("FromGDIplus", BindingFlags.Static | BindingFlags.NonPublic);

Bitmap bmp = (Bitmap)mi.Invoke(null, new object[] {img});



bmp.Save(fileName);

bmp.Dispose();



// causing the image to be saved in a default 24 bpp inflated format

//st = GdipSaveImageToFile( img, fileName, ref clsid, IntPtr.Zero );



GdipDisposeImage( img );

return st == 0;

}