Bug (1.66): Hung programs can be terminated only with a keyboard action

[AromaKitsune]

With the HungWindowFromGhostWindow() function being added, terminating a hung app with a keyboard action works, but terminating it with a mouse action (Alt + Middle Click) doesn't work.

AltSnap version: 1.66
Launched w/ admin privileges: Yes
Launched w/ UIAccess: No

[RamonUnch]

Did you have the problem with previous version 1.65?I do not think it is related to the new feature but simply to the fact that Windows does not give the mouse event to the low level hook when hovering over a disabled window. This is a limitation of Windows IRC. but please test with previous version to be sure. Le samedi 30 août 2025 à 20:59:52 UTC+2, Kitsune ***@***.***> a écrit : AromaKitsune created an issue (RamonUnch/AltSnap#663) With the HungWindowFromGhostWindow() function being added, terminating a hung app with a keyboard action works, but terminating it with a mouse action (Alt + Middle Click) doesn't work. AltSnap version: 1.66 Launched w/ admin privileges: Yes Launched w/ UIAccess: No — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[AromaKitsune]

Yep, I can confirm it's a Windows limitation where AltSnap can't do various mouse actions with ghosted windows, at least on 1.65 and 1.66. However, on 1.66, the 'kill program' mouse action works with ghosted windows with the following methods:

• Use the command AltSnap.exe -apKill while placing the cursor over a hung program
• Terminate a hung program with a mouse action (Alt + Middle Click) while AltSnap is launched with UIAccess

[RamonUnch]

Interesting, you mean it works as expected with `UIAcess` but not with elevation? Message ID: ***@***.***>

[AromaKitsune]

Yes, AltSnap launched with UIAccess and without elevation. The AltSnap.exe -apKill command also works without UIAccess, though AltSnap need to be elevated if the hung program is elevated.

Here's a list of launch + action combinations and results:

UIAccess?	Action	Can terminate?
No	Kill program mouse action	No
No	AltSnap.exe -apKill command	Yes
Yes	Kill program mouse action	Yes
Yes	AltSnap.exe -apKill command	Yes

All launch methods above are not elevated.