InkCanvas not working in XAML Controls Gallery app

[WillemBos]

InkCanvas not working in XAML Controls Gallery app

Steps to reproduce the bug
Steps to reproduce the behavior:

1. Go to Open the XAML Controls Gallery app
2. Search for InkCanvas
3. Click with the mouse on the canvas and nothing happens

Expected behavior
Click with the mouse on the canvas and something will be drawn
Actual behavior
Click with the mouse on the canvas and nothing happens

Screenshots

Version Info

• App downloaded from Store
  • If so, which version? 1.2.19.0

Additional context

Windows 10 version:

• Insider Build (xxxxx)
• 21H1 Update (19043)
• November 2019 Update (18363)
• May 2019 Update (18362)
• October 2018 Update (17763)
• April 2018 Update (17134)
• Fall Creators Update (16299)
• Creators Update (15063)
• Anniversary Update (14393)

Device form factor:

• [X ] Desktop
• Mobile
• Xbox
• Surface Hub
• IoT

[WillemBos]

Windows 11 it's working

[StevusPrimus]

Still not working on Win10 version 2004 Build 19041 for mouse painting. Checked out from master and freshly build with Win10 version 2004 Build 19041. It works with https://github.com/microsoft/Windows-universal-samples/tree/main/Samples/SimpleInk/cs . After some investigation I have the impression the InkPresenter is not listening to the Pointer events anymore. Anyone has a rough idea where to investigate further?

[stmoy]

How strange! I'm able to draw:

I wonder if it might be related to some underlying driver issue or something. In any case, I don't think the issue is with the Gallery itself (as the sample is very simple - just an InkCanvas) so moving this to the WinUI repo for further investigation.

[StevusPrimus]

Hi @stmoy did you draw with the mouse? I could not test with something else than a mouse.

[stmoy]

Hi @stmoy did you draw with the mouse? I could not test with something else than a mouse.

Yes indeed - I drew this rather awkwardly with my mouse 😅

[StevusPrimus]

Hi @stmoy, may I ask which commit and windows version you used to test?

[StevusPrimus]

Still not working on Win10 version 2004 Build 19041 for mouse painting. Checked out from master and freshly build with Win10 version 2004 Build 19041. It works with https://github.com/microsoft/Windows-universal-samples/tree/main/Samples/SimpleInk/cs . After some investigation I have the impression the InkPresenter is not listening to the Pointer events anymore. Anyone has a rough idea where to investigate further?

At that point in time the commit was 84c97f0

[StevusPrimus]

Also we traced down the issue the commit in the gallery app. d4b13f7 is the first which is broken, it works with 1ab6078 and below.

[stmoy]

@StevusPrimus - thank you for the thorough investigation! We are following up internally on this - it seems like it might be related to a change that was fixed in Windows 11, but we're discussing what to do for Windows 10 users.

[antokhio]

Hi, i have the same problem, when i added InkCanvas it was also not working, then i tried workaround from that tread #5299 (comment) mentioned here:
#6021 without success.

Next i noticed that https://docs.microsoft.com/en-us/samples/microsoft/windows-universal-samples/simpleink/ that sample still working properly, and started to investigate, seems the problem solving lines of code are:

InkDrawingAttributes drawingAttributes = new InkDrawingAttributes();
drawingAttributes.Color = Windows.UI.Colors.Red;
drawingAttributes.Size = new Size(penSize, penSize);
drawingAttributes.IgnorePressure = false;
drawingAttributes.FitToCurve = true;

inkCanvas.InkPresenter.UpdateDefaultDrawingAttributes(drawingAttributes);
inkCanvas.InkPresenter.InputDeviceTypes = CoreInputDeviceTypes.Mouse | CoreInputDeviceTypes.Pen;

List after adding this to my project InkCanvas started to work straight away

[github-actions]

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