Transparent part is not painted

[ORC]

Hi,

I have made a custom control - a button that is able to show an image. The
image can have a transparent background and is sometimes placed halfway on
top of another control.

Following is part of the code that is placed in the 'OnPaint' event:

ImageAttributes imageAttr = new ImageAttributes();
imageAttr.SetColorKey( bitmapTransparentColor, bitmapTransparentColor);

e.Graphics.DrawImage(image, imgRect, 0, 0, image.Width, image.Height,
GraphicsUnit.Pixel, imageAttr);


But the part that is transparent isn't updated / painted - what have I
missed?.

Thanks - your respons is highly appreciated
Ole

 

[Peter Foot [MVP]]

CE doesn't support transparent windows so all that happens is it doesn't
draw the areas you mask off with the colorkey. Therefore unless your
OnPaintBackground fills the background of the control, you will end up with
an area which doesn't redraw.

Peter

--
Peter Foot
Windows Embedded MVP
www.inthehand.com | www.opennetcf.org

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[ORC]

Thanks for your prompt reply!

Is it possible to get an image of a specified rectangle from the windows
beneath?

Thanks
Ole