I am currently developing an application for the Windows platform that can play Quick Time videos. Target OS versions are Windows XP, Windows Vista, and Windows 7.
I have successfully used Apple ActiveX QuickTime Control 2.0 (in C #) and everything works well in Windows XP.
However, in Vista and Windows 7 I have problems with the correct disposal of the control. Here are the “steps to play”: - I dynamically create a fast-time control at runtime, and I put it on the panel;
I successfully play a video with him;
At some point, I close the main form of the application; application windows will be destroyed and the application will continue to run in the background (performing operations such as video synchronization); at this stage, management is located using the IDisposable template; I cannot explicitly exclude the Movie object (from the ActiveX control) because I get an exception like: "The COM object that was separated from its base RCW cannot be used."; I just use (AxQTOControlLib.AxQTControl) player.Dispose (); On Windows XP this is fine, but not on Vista and 7
I restore my application (from the toolbar where it runs in the background), and try opening the video again; At this point, an AccessViolationException "Attempted to read / write protected memory" is thrown;
My questions:
Vista Windows 7?
XP ?
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