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"Error creating window handle." From PictureBox.OnFrameChanged #14823
Description
.NET version
.net10
Did it work in .NET Framework?
Not tested/verified
Did it work in any of the earlier releases of .NET Core or .NET 5+?
not tested.
Issue description
Hi I'm facing the the issue with following message:
ExceptionType: System.ComponentModel.Win32Exception
Message: Error creating window handle.
Stacktrace:
at System.Windows.Forms.NativeWindow.CreateHandle(CreateParams cp)
at System.Windows.Forms.Control.CreateHandle()
at System.Windows.Forms.Control.get_Handle()
at System.Windows.Forms.Control.IHandle<Windows.Win32.Foundation.HWND>.get_Handle()
at System.Windows.Forms.Control.get_InvokeRequired()
at System.Windows.Forms.PictureBox.OnFrameChanged(Object o, EventArgs e)
at System.Drawing.ImageAnimator.ImageInfo.AdvanceAnimationBy(Int64 milliseconds)
at System.Drawing.ImageAnimator.AnimateImages()
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
I've checked the code and the code in the PictureBox has InvokeRequired && IsHandleCreated
While in other controls e.g. Label, ButtonBase, the code is IsHandleCreated && InvokeRequired
Do you think if the property check order is the root cause of the issue?
Steps to reproduce
Cannot reproduce it.
Activity
Zheng-Li01 commentedon Aug 20, 2026
No steps to verify, just checked the code have been changed in main branch of dotnet/winforms repro as below screenshot.
Zheng-Li01 commentedon Aug 27, 2026
Checked the code have been changed in release/11.00rc1 branch of dotnet/winforms repro, it has the same validation result as above.