Problem with changing backcolor of picturebox

[Calan]

I have a form with some picture boxes as buttons. I'm setting the picture
property to a gif file for "normal", and to a different gif for the
"pressed" state. This works fine. I get into trouble with the fact that the
gif files have a transperent region in the middle (the button icon) that
lets the back color of the picture box show through. This lets me change the
button highlight to any user-specified color when I mouseover the picbox
(which is done very inefficiently I might add, but that's another story).

Everything works, except that I get occasional flicker that shows through
the image as the backcolor is changing. Is there a way to change the picture
box backcolor without any flicker? I've tried setting it to invisible and
then back, played with z-order, LockWindowUpdat e API, etc., all to no avail.
Some type of memory painting/swapping maybe?

Any help is greatly appreciated. Any good advice for an efficient
"mouseover" event for controls would also be greatly appreciated.

Thanks much in advance

[TecCRC]

Re: Problem with changing backcolor of picturebox

"Calan" <none@nospam.co m> wrote in
news:ipfad.169$ Z9.160@fe25.use netserver.com:
[color=blue]
> I have a form with some picture boxes as buttons. I'm setting the
> picture property to a gif file for "normal", and to a different gif
> for the "pressed" state. This works fine. I get into trouble with the
> fact that the gif files have a transperent region in the middle (the
> button icon) that lets the back color of the picture box show through.
> This lets me change the button highlight to any user-specified color
> when I mouseover the picbox (which is done very inefficiently I might
> add, but that's another story).
>
> Everything works, except that I get occasional flicker that shows
> through the image as the backcolor is changing. Is there a way to
> change the picture box backcolor without any flicker? I've tried
> setting it to invisible and then back, played with z-order,
> LockWindowUpdat e API, etc., all to no avail. Some type of memory
> painting/swapping maybe?
>
> Any help is greatly appreciated. Any good advice for an efficient
> "mouseover" event for controls would also be greatly appreciated.
>
> Thanks much in advance
>
>
>[/color]

have you tried setting the autoredraw setting of the picture box to True?
this will eliminate flicker

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