hi,

suppose I have a .gif with a cyan-colored background. I'd like this
..gif to appear as if it had a transparent background. using Visual
Studio 2005, is there any property of the Image object I can set to
facilitate this?

something like...

image.transparentBackgroundColor = System.Drawing.Color.Cyan;

thx

<A_StClaire_ (AT) hotmail (DOT) com> wrote

I think you need to create an imageattributes object and call SetColorKey.

If you draw the gif using DrawImage a transparent GIF should be drawn with
the transparency.
You can also load the GIF into a Bitmap object and then use the
MakeTransparent method to select a specific transparent color. The advantage
of this is that you can use several transparent colours by making more than
one transparent. This process isn't reversible though.

--
Bob Powell [MVP]
Visual C#, System.Drawing

Ramuseco Limited .NET consulting
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<A_StClaire_ (AT) hotmail (DOT) com> wrote