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Hi,
I'm working on the WinUI3 desktop application. I'm trying to set a custom property and an ID to the winui3 window and get the WinUI3 window back with only the ID. I could not find any way to put an ID or Custom property to WinUI3.
I tried to extract HWND from the WinUI3 window and set the ID and Prop using SetProp, It works well for custom properties but for setting id, it doesn't fit well as per my requirements. I want to get the Window back when I have only the ID, I was able to get back the HWND back when I only had the ID but I was not able to get back the WinUI3 Window from that HWND.
It would be of great help if you could help me with this issue.
Thank you
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Do you need Microsoft.UI.Windowing.AppWindow.GetFromWindowId?
@Xiaopo Yang - MSFT , thank you for your response, how do we set a custom ID for Windows in this case? and how can we get back the winrt::Microsoft::UI::Xaml::Window back from AppWindow?
Hello,
Welcome to Microsoft Q&A!
how do we set a custom ID for Windows in this case?
AppWindow and Window handle have WindowId.
how can we get back the winrt::Microsoft::UI::Xaml::Window back from AppWindow
Win32Interop.GetWindowFromWindowId with AppWindow.Id.
Thank you.
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I was not able to find any way to Set AppWindow.Id property, I was only able to get it with AppWindow.Id(); And I tried setting ID for hWnd like this SetWindowLongPtrA(uWindowHwnd,GWLP_ID, 100); but this ID and the ID I got from GetWindowIdFromWindow(uWindowHwnd); were different.
And Win32Interop.GetWindowFromWindowId will return HWnd right, how to get winrt::Microsoft::UI::Xaml::Window?
You need to set the winrt::Microsoft::UI::Xaml::Window address in the Native Window Handle HWnd property. And AppWindow and Window handle have WindowId so you don't need your ID.
Hello @21939029 , So far, there is no API to get winrt::Microsoft::UI::Xaml::Window from HWND or WindowId. I have submitted a feature request about this. You can also submit an issue at WindowsAPPSDK GitHub Issues. Any update?
Okay, thank you, I will also submit the issue.
@Xiaopo Yang - MSFT , I can use the Name property to set an id to control, If I want to set one more extra property, is there any way to set it? I can't use SetProp as we can't get HWND from Winui3 controls/widgets.
My concern is, can we set more than 1 property to winui3 controls (like button)?
How about FrameworkElement.Tag Property? You can use FrameworkElement.Tag to store an address for example a map container address.
Thank you this works