WebView2Feedback
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MicrosoftEdge
[Problem/Bug]: Blank window after navigate in hidden state
What happened?
In our app, we are trying to start using WebView2 instead of CEF for displaying our main window's UI. At app start, we show a splash screen, calling navigate and waiting for the navigate to complete. The browser window is hidden (SW_HIDE) while navigating. Once navigation is complete, we show the browser window (SW_SHOW). Result: its window is blank. It shows nothing. It also does not react on mouse clicks in any way (e.g. does not show context menus).
Is it an expected behavior? Can it be disabled then? What are possible workarounds?
Importance
Blocking. My app's basic functions are not working due to this issue.
Runtime Channel
Stable release (WebView2 Runtime)
Runtime Version
No response
SDK Version
No response
Framework
Win32
Operating System
Windows 10
OS Version
No response
Repro steps
You can easily reproduce this behavior on sample apps (e.g. Win32_GettingStarted). For this, you need to modify Win32_GettingStarted project code in the following way:
- Add a call to CoInitialize(0).
- Change ShowWindow's mode to SW_HIDE.
- Add NavigationCompleted handler and show window in it (SW_SHOW).
Repros in Edge Browser
No, issue does not reproduce in the corresponding Edge version
Regression
No, this never worked
Last working version (if regression)
No response
@champnic could this be somewhat related to this issue https://github.com/MicrosoftEdge/WebView2Feedback/issues/1077?
I too am facing the same issue. Did you find any workarounds for this? @alervd
@mhdshameel Yes, I temporarily show the window outside of the visible screen space and then hide it again once I get my callback with webview2 called.
@mhdshameel Yes, I temporarily show the window outside of the visible screen space and then hide it again once I get my callback with webview2 called.
I have fixed it by using the webviewcontroller::put_IsVisible(true). Basically all the logistics stuffs are handled by the controller, so you can hide and let the navigation complete and show using this api of the wv2 controller
@mhdshameel put_IsVisible(true) works? Well, it's a something I should try too :)