About window blink

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This topic and its replies were posted before the current version of LEADTOOLS was released and may no longer be applicable.

#1 Posted : Friday, November 28, 2008 6:32:01 AM(UTC)

lili

Groups: Registered
Posts: 23

I am using C++ ClassLib 14.0.
I use LAnnotationWindow to load a image and set a handle of a window to it, so the image is displayed very well. But when I want to load another image,
I set NULL as window handle and call free() on this object to free the memory. I found every time when free() is called, the window will be blink.
Do I need to call free()? How can I fix blink?

Thanks.


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#2 Posted : Sunday, November 30, 2008 12:42:07 AM(UTC)

Qasem Lubani

Groups: Guests
Posts: 3,022

Was thanked: 2 time(s) in 2 post(s)

Please take a look at the following post. The customer had some flickering problems and the suggestion form my colleague solved it.

http://support.leadtools.com/SupportPortal/CS/forums/8429/ShowPost.aspx#8376

#3 Posted : Wednesday, December 3, 2008 11:04:34 AM(UTC)

lili

Groups: Registered
Posts: 23

Do I need to call free()?
I saw the sample code. You didn't call it in your sample.
This call cause the blink in my application.

Thanks.

#4 Posted : Wednesday, December 3, 2008 11:53:48 AM(UTC)

lili

Groups: Registered
Posts: 23

I just got a solution that is calling EnableAutoPaint(FALSE) before call free().
My application works very well now.

Thanks.

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