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Window content disappears

See original GitHub issue

I am using your Fluent WPF example as a base. Main windows is fine, but sometime as additonal window created would be completely blank, and one of the users sent this crash report

System.OverflowException: Arithmetic operation resulted in an overflow.
   at System.Windows.Shell.WindowChromeWorker._HandleNCHitTest(WM uMsg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at System.Windows.Shell.WindowChromeWorker._WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at System.Windows.Interop.HwndSource.PublicHooksFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
   at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)

It just has the acrylic effect and window can still be moved around and closed. When this happens each windows reopening would produce a window like this until program is restarted. I have not found a reliable way to reproduce this.

Issue Analytics

State:
Created 3 years ago
Reactions:3
Comments:15 (7 by maintainers)

Top GitHub Comments

2reactions

ShankarBUScommented, Sep 22, 2020

This seems to be a problem with FluentWPF, I had this exact same issue while using FluentWPF (only FluentWPF, no other UI libraries) in one of projects. The window would be blank when reopened after a while.

It’s too annoying for users. Restarting the app may temporarily fix this issue but it may happen later

So it makes sense to open an issue regarding this on the FluentWPF repo.

1reaction

milos12345commented, Nov 3, 2020

For a test, I’ve replaced Style for TabControl/TabItem with a first one I’ve googled https://stackoverflow.com/a/31365307/967565 and the issue is fixed in one window; 2nd one still uses Style from ModernWPF and still results in whole window blank after Lock/Unlock, so the issue is definitely is somewhere in TabControl/TabItem Style of ModernWPF