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c++windowstaskbar

Blink/Alert in Taskbar for c++

I'm writing my own class to create and handle a progress/overlayicons for a programs taskbar icon.

I'm using the ITaskbarList3 for Windows 7/higher to do this. I can now create a progress or overlayicons, but what I'm missing is the alert/blink effect, that appears if a program wants to get the users attention (e.g. if you have to confirm admin rights and are working on a different tab).

I do not mean the pause/error-indicators for a progress, I need the blinking orange effect, and i wasn't able to find something until now.

Thanks for your help.

Solution

  • Use FlashWindowEx function. See the doc on FLASHWINFO - you can start flashing, stop flashing and specify flashing parameters.

    For continuous blinking until the user clicks on the window the code is like this:

    FLASHWINFO fi;
fi.cbSize = sizeof(FLASHWINFO);
fi.hwnd = yourHwnd;
fi.dwFlags = FLASHW_ALL | FLASHW_TIMERNOFG;
fi.uCount = 0;
fi.dwTimeout = 0;
FlashWindowEx(&fi);