Graphic Window turning white ?

[Frank Kestens Member Find all posts View Profile Close Frank Kestens]

I've got a problem with one of my applications : the application draws graphs in the output window . The CPU is herby running at ca. 100% .
Sometimes the output window becomes totally empty , in the middle of the run .
The curious thing is that if I perform a screenshot at the end of the program , the screenshot is as expected .
Do I have some problem with my Graphics?
Curiously , if I give the program at the beginning a priority of "high" in the Windows task manager the problem doesn't occur at all.
Someone has any similar experiences ( and a cure ) ?

[Chris Holbrook Member Find all posts View Profile Close Chris Holbrook]

The CPU is herby running at ca. 100% .....( and a cure ) ?

Compileable source code will probably do the trick...

[Frank Kestens Member Find all posts View Profile Close Frank Kestens]

Compileable source code will probably do the trick...

What do yo mean Chris ?
The program compiles wihout errors

[Chris Holbrook Member Find all posts View Profile Close Chris Holbrook]

What do yo mean Chris ?
The program compiles wihout errors

If you post compileable source code here then people can look at it and I bet you will get a result.

[Cliff Nichols Member Find all posts View Profile Close Cliff Nichols]

Frank,
Basically if you post the code you are using that makes the CPU go to 100% I am sure someone can spot why it is doing that. (Although without seeing code, we can only guess, but my guess would involve SLEEP)

[Michael Mattias Member Find all posts View Profile Close Michael Mattias]

Sounds like "The White Screen of Death" .... what you get when you try do something which ties up the current thread, preventing the screen from repainting.

(solution: do such stuff in a separate thread of execution).

[Frank Kestens Member Find all posts View Profile Close Frank Kestens]

Thanks for the answers . I'll post the code , but cause its quite long I have to clean it before posting it ...