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WPF is a .NET Core UI framework for building Windows desktop applications.

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### Description The `WorkerOperation.DoWork` in `PenThreadWorker.ThreadProc` will throw System.ObjectDisposedException. This is not a good report and I lack the steps to reproduce it. This exception info from my application telemetry....

Bug
needs more information
area-Touch

* .NET Core Version: 6.0.121.56705 * Windows version: win10 21H2 * Does the bug reproduce also in WPF for .NET Framework 4.8?: No **Problem description:** After https://github.com/dotnet/wpf/pull/2891 the `Stylus Input`...

Bug
area-Touch
:construction: work in progress

* .NET Core Version: 3.1.301 * Windows version: (`winver`) * Does the bug reproduce also in WPF for .NET Framework 4.8?: Yes **Problem description:** ~~I don’t know how to turn...

Bug
area-Touch

I discovered that the implementation of `PointerTouchDevice` uses a particularly strange and incorrect method to obtain the size of the touch point. In the `GetStylusPointWidthOrHeight` method of `PointerTouchDevice`, it attempts...

Investigate
area-Touch

### Description I am reporting an issue where incorrect touch point coordinates are obtained when calling the GetStylusPoint methods within an application that is moved to a non-primary screen on...

Bug
area-Touch
:construction: work in progress

Fixes #11103 Main PR ## Description See https://github.com/dotnet/wpf/issues/11103 The `stylusDevice.CriticalActiveSource` may be null. And the `stylusDevice.CriticalActiveSource` will update from `inputReport.InputSource`. So that we directly use `inputReport.InputSource` will be safe and...

PR
Community Contribution

### Description • StylusPlugIn.OnStylusDown / OnStylusUp are sometimes invoked out of order: I see OnStylusUp called on the UI thread, then later OnStylusDown called on the Stylus (pen/touch) thread. •...

area-Touch
:beetle: bug

### Description The HTML fragment DataGrid puts into the clipboard is not accepted by other applications. It appears that the fragment's offsets (StartHTML/EndHTML/StartFragment/EndFragment) do not match the content. ### Reproduction...

Bug
Investigate
:construction: work in progress

See #4768. The current code is written in C++/CLI and I think that can be optimized. Unfortunately, I have written very little C++/CLI myself but I suspect that the generated...

Performance
Community Discussion

Hello, Some AutomationPeers such as the DataGridRowAutomationPeer are sealed. It would be better if these were not sealed. For example, if a specific DataGridRow is created with additional parameters, we...

Enhancement Requested