>Cesar, Whay is in "System.app" that lets you do this?
>
>

DO LOCFILE("System.App")
>
>WITH _SCREEN.System.Drawing
>   * Create a Bitmap object based on a BMP file.
>   LOCAL loOriginalBmp AS xfcBitmap
>   loOriginalBmp = .Bitmap.New(GETPICT())
>   LOCAL loMonoChrBmp as xfcBitmap
>   loMonoChrBmp = loOriginalBmp.GetMonochrome()
>   * Save the created Monochromatic Bmp
>   loMonoChrBmp.Save("c:\Monochromatic.bmp", .Imaging.ImageFormat.Bmp)
>ENDWITH
>RETURN

>
>Thanks,
>
>Alex

System.App is the main file of the GdiPlusX library.
This library of classes contains lots of functions and classes that help you to manipulate images.
The function GetMonochrome is just one of these functions.