Tk Source Code: View Ticket

Ticket UUID:	3138512
Title:	Tk applicatications after grab command (both local/global mo
Type:	Bug	Version:	None
Submitter:	akurbatov	Created on:	2010-12-16 09:46:13
Subsystem:	56. [grab]	Assigned To:	oehhar
Priority:	5 Medium	Severity:	Minor
Status:	Closed	Last Modified:	2026-09-28 09:21:08
Resolution:	Fixed	Closed By:	oehhar
		Closed on:	2026-09-28 09:21:08
Description:	XP SP2,XP SP3,..,Win7 32-64bit Tk 8.5.9 ,8.6.0 (but not 8.4.*) 1) start any application, for example: notepad.exe 2) start ..>Demos>TK Miscellaneous > 2. A dialog box with a local grab. 3) click on Task_Manager/Show_Desktop button 4) click on Task_Manager/notepad.exe icon (or any others Task_Manager icons) Oops.. (Tk application minimized forever) Bug #3009450 ?
User Comments:	oehhar added on 2026-09-28 09:21:08: Thanks. Here is my test case: toplevel .t pack [button .t.b -text close -command {destroy .t}] grab -global .t Start wish and enter test code Press Win+D try to restore the window labeled "t" from the task bar (not wishxx) -> it stays minimized. Merged to branches: main: [3f517077] core-9-0-branch: problem not present (no idea why) Anyway, thanks for all, Harald serhiy.storchaka added on 2026-09-25 10:21:17: The local grab case was fixed by [b86736bbf7] ([ed6c3a787d]). With `grab -global` it still fails on Windows 11 with 8.6.18 and 9.1: the mouse capture held by the global grab prevents Windows from restoring the minimized window. Proposed fix in [ba25235ae7] (branch win-global-grab-restore): release the capture on SC_RESTORE; Tk sets it again on the next pointer event. New test winWm-9.3 fails without the fix.