WinUI for Desktop

[Fernand-Delavy]

i use Visual Studio 16.9.0.Preview 5.0

App can't print because crash:
PrintManager manager;
manager = PrintManager.GetForCurrentView(); // System.Runtime.InteropServices.COMException: 'Interface non enregistrée (0x80040155)'
The print capability is important

Can't change Windows title from 'WinUI Desktop' to app name

MessageDialog crash work arond use ContentDialog ?

[sigmarsson]

Yes ContentDialog.

[StephenLPeters]

@Austin-Lamb FYI. @Fernand-Delavy I haven't seen PrintManager before, but the api's that have *ForCurrentView() generally use the core window, which isn't supported in Winui3 preview 4. I don't know if this has another way to do it or not.

[dedaap72]

I'm running into the same problem in WinUI3. How do I get printing to work? All examples I Google use UWP.
This issue links to #4363 which links back to this issue, which is not very helpful either...

[Fernand-Delavy]

Sorry for my bad englich

I think here is a "Wirte Only" forum. All developper write but the Microsoft Staff (GitHub) never reply !
My post is 9 month old and no solution !

[StephenLPeters]

@MikeHillberg and @codendone FYI

[ezexe]

so no solution?

[krschau]

Please try the solution in the sample app linked in #7234.

Essentially, as mentioned above, *ForCurrentView() methods don't work in WinUI 3 desktop apps, which don't have a core window. But you can work around it with an hwnd and the interop method:

var hWnd = WinRT.Interop.WindowNative.GetWindowHandle(this);
printMan = PrintManagerInterop.GetForWindow(hWnd);

await PrintManagerInterop.ShowPrintUIForWindowAsync(hWnd)

I'm closing this as a dupe of #4419, and any more conversation can happen over there.