WPF Window size limitation

Bruce Kingsley 1 Reputation point
2020-06-23T13:38:15.917+00:00

There seems to be some limit to the size of a WPF window and the monitor resolution I’d like to understand. My application creates a window 4320 x 7680. The computer has a graphics adapter with (4) outputs connected to (4) very large 4K LCD monitors in the Portrait orientation mounted side by side on our factory wall.

When Windows is set with a display resolution of 1080 (100% scaling), everything works. If the settings are set to a resolution of 4K (with scaling set to 200%), the application launches, but no graphics are shown and no exceptions are thrown. If I reduce the window size to 3240 x 7680, or just unplug the forth monitor the application works. So clearly there is a limit to how much of widow actually can be rendered. Even if I make the window 8000 x 7680, the application works as long as only three 4K monitors are connected.

Does anyone understand this limit and if there means to work around it?

Developer technologies | Windows Presentation Foundation

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  1. Bruce Kingsley 1 Reputation point
    2020-07-07T00:03:19.507+00:00

    Hi Charles, Framework 4.6 on Windows 10 Pro.

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