>Hello,
>
>I am trying to convert images to grayscale using GDI+. Did anybody do this before?

There is a sample included called Color Matrix that does this.
Here is the relevant code. Could not be simpler.

WITH Thisform
	.oClrMatrix = _Screen.System.Drawing.Imaging.ColorMatrix.New( ; 
        0.33, 0.33, 0.33, 0.0, 0.0, ; 
        0.33, 0.33, 0.33, 0.0, 0.0, ; 
        0.33, 0.33, 0.33, 0.0, 0.0, ;
        0.0 , 0.0 , 0.0 , 1.0, 0.0, ; 
        0.0 , 0.0 , 0.0 , 0.0, 1.0)
	.imgcanvas1.Draw()
ENDWITH

Bernard