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Mouse events are not triggered to UI from different process RRS feed

  • Question

  • Hi,

    I created a WPF UI designed to be loaded in a different process, for CLR incompatibility reason to application. This application (from 3rd party) will host my UI. Everything works fine until I clicked my UI, the whole application hangs. I'm able to find the root cause, and it's a group box ATL user control. The group box acts as a panel to my UI. If I try to hide the group box, using some win32 API's, the issue will not happen.

    I have several options on fixing this issue, one of them is to inform the 3rd party company and ask them to fix. But I cannot enforce this to them, so I would like to know if I can do some work around on my end to prevent this from happening.

    Can anyone give me explanation why this happen?

    Thank you very much.

    Monday, March 11, 2019 6:15 AM

All replies

  • Hello,

    Thanks for posting here.

    >>I created a WPF UI designed to be loaded in a different process, for CLR incompatibility reason to application. This application (from 3rd party) will host my UI. 

    This forum is about c++ development. It seems that your issue is more related to the third-party application or maybe WPF, so I will move this thread to off-topic.

    Your understanding and cooperation will be grateful.

    Best Regards,

    Jack Zhang


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    Monday, March 11, 2019 9:00 AM
  • Hi,

    Thanks for your reply.

    Although my UI is WPF, the issue that caused this is a C++ application. What I did so far was create a simple WPF UI and load it in the C++ application's process, this works fine. But when I load the same WPF UI but in a different process, the issue happens. It seems like the mouse event message is blocked by some window object in C++ application when UI is not created on it's own process.

    Tuesday, March 12, 2019 8:27 AM