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I am creating WinUI3 app i want to handle some events.
how to know whether power key status of pressed or not
I want to avoid the condition to go inside if the power key pressed.
please suggest.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(179.20000000000002, 34%, 27%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EXY%3C/text%3E%3C/svg%3E)
Does PowerManager work for you? Or you may need Shutdown Notifications. Could you please show more detail about your condition?
Hello @Sachi, Any update?
Hi Team,
I want to handle the situation in C# where the power button is pressed for a long time
could you please suggest how will i know whether the user has pressed the power key for a long time?
Hi Team,
Any suggestions on above issue?
I don't have any "power key" button on my keyboard to test, but when you press it, did you check if they are WM_* messages sent to your app (main window handle) with Spy++ ?
Hi @Castorix31
Thank you for the reply
No i was not aware of WM_ messages sent to your app (main window handle) with Spy++*
can you be more specific on this?
when i press power key button i am capturing the event it sending 3 Virtual keys(not together) it's sends one by one key i am unable to identify when power key pressed or its state change
because i am having one more key with same virtual key(as power key) so i want to avoid power key pressed event
please suggest something to get power key state change
Thanks
No i was not aware of WM_ messages sent to your app (main window handle) with Spy++* can you be more specific on this?
I meant to watch messages sent to your app when this button is pressed, with MS Spy++ tool
Same thing as this test with Notepad (mouse messages) :
Hello @Sachi , according to Shutdown Notifications, which concentrates on shutting down, you can use the WM_QUERYENDSESSION and WM_ENDSESSION messages to receive shutdown notifications instead of checking the state of power key. I have tested that the messages work fine.
For how to use the messages with WinUI3, see @Castorix31 's example.