WPF Window Area Turns Black in Vista Aero

[RMG_27]

Hi everyone.

We are currently developing a WPF Window application. The main window of the said application has one WPF Button whose Click event handler is taking a lot of time. When our application is run in Vista using Vista Aero color scheme and the said button is clicked, the content area of the main window turns black and "(Not Responding)" string is appended in the main window's title bar. When we switch to Vista Basic color scheme and we run the same sequence, the content area of the main window does not turn black although "(Not Responding)" string still appended in the main window's title bar.

We want to know the reason why our application's main window turns black when the mentioned sequence is run under Vista Aero color scheme. Does anyone have any idea or explanation?

Thank you.

[bacula]

Disable 'desktop composition' and try again.
I don't know why this happens and I have a similar problem, but this seems to fix it for me.
Unfortunately, this is not really an option