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Normal Topic replace picture (Read 1778 times)
allen
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replace picture
Jan 6th, 2008 at 1:10pm
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Hi,
I used the LoadPicFromRes method to put a picture to the box control.But now I want the gray the picture of the box control that means the box control is unavailable.that is to say, how to load a grayed bitmap to replace the original bitmap,
???

Thanks
  
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Stoyo
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Re: replace picture
Reply #1 - Jan 7th, 2008 at 6:46am
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Hi,

If you are using GDI+, you could overlay the box with another box whose FillColor is set to gray and FillColorAlpha is < 255, say 100. If the users must be able to interact with the 'unavailable' boxes, use a Group object to attach the overlay box to the picture box.

Another possibility is to use custom drawing and draw on the HDC / Graphics surface. Yet another one is to keep two versions of the image - a normal one and a grayed one.

I hope that helps,
Stoyan
  
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