Flashing the window title (and the task bar) via FlashWindowEx has no effect #11972

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opened 2026-01-31 03:02:54 +00:00 by claunia · 0 comments
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Originally created by @UweKeim on GitHub (Jan 6, 2021).

Environment

Windows build number: Microsoft Windows [Version 10.0.19042.685]
Windows Terminal version: 1.4.3243.0

Any other software? Any program that flashes the window title like e.g. my own tool to do so: https://github.com/UweKeim/console-flasher

Steps to reproduce

I'm trying to acchieve that when a program, that runs in a CMD instance inside Windows Terminal, does makes a call to the FlashConsoleEx Windows API call, the flashing of both the window title and the task bar icon of Windows Terminal does happen.

  1. Open a new Terminal instance with a cmd tab (i.e. no PowerShell)
  2. Run a program that flashes the window title (and also the task bar icon)

Expected behavior

The window title and the task bar icon of Windows Terminal flashes.

Actual behavior

The window title and the task bar icon of Windows Terminal does not flash.

Additional remarks

Try running a program that flashes the window title in a regular cmd.exe (i.e. not in Windows Terminal) to see a live example of the expected behaviour.

Originally created by @UweKeim on GitHub (Jan 6, 2021). <!-- 🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨 I ACKNOWLEDGE THE FOLLOWING BEFORE PROCEEDING: 1. If I delete this entire template and go my own path, the core team may close my issue without further explanation or engagement. 2. If I list multiple bugs/concerns in this one issue, the core team may close my issue without further explanation or engagement. 3. If I write an issue that has many duplicates, the core team may close my issue without further explanation or engagement (and without necessarily spending time to find the exact duplicate ID number). 4. If I leave the title incomplete when filing the issue, the core team may close my issue without further explanation or engagement. 5. If I file something completely blank in the body, the core team may close my issue without further explanation or engagement. All good? Then proceed! --> <!-- This bug tracker is monitored by Windows Terminal development team and other technical folks. **Important: When reporting BSODs or security issues, DO NOT attach memory dumps, logs, or traces to Github issues**. Instead, send dumps/traces to secure@microsoft.com, referencing this GitHub issue. If this is an application crash, please also provide a Feedback Hub submission link so we can find your diagnostic data on the backend. Use the category "Apps > Windows Terminal (Preview)" and choose "Share My Feedback" after submission to get the link. Please use this form and describe your issue, concisely but precisely, with as much detail as possible. --> # Environment Windows build number: Microsoft Windows [Version 10.0.19042.685] Windows Terminal version: 1.4.3243.0 Any other software? Any program that flashes the window title like e.g. my own tool to do so: https://github.com/UweKeim/console-flasher # Steps to reproduce <!-- A description of how to trigger this bug. --> I'm trying to acchieve that when a program, that runs in a CMD instance inside Windows Terminal, does makes a call to the [`FlashConsoleEx` Windows API call](https://docs.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-flashwindowex), the flashing of both the window title and the task bar icon of Windows Terminal does happen. 1. Open a new Terminal instance with a cmd tab (i.e. _no_ PowerShell) 2. Run a program that flashes the window title (and also the task bar icon) # Expected behavior <!-- A description of what you're expecting, possibly containing screenshots or reference material. --> The window title and the task bar icon of Windows Terminal flashes. # Actual behavior <!-- What's actually happening? --> The window title and the task bar icon of Windows Terminal does not flash. # Additional remarks Try running a program that flashes the window title in a regular cmd.exe (i.e. not in Windows Terminal) to see a live example of the expected behaviour.
claunia added the Issue-QuestionNeeds-Tag-FixResolution-Answered labels 2026-01-31 03:02:55 +00:00
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Reference: starred/terminal#11972