This delightfully straightforward extension provides functionality for flashing the game's window and/or it's taskbar button.
Easy to use (single function, constants for options)
Flash a number of times, until focused, or by condition.
Flash the game's window, taskbar button, or both.
Adjustable flashing frequency.
C++ source code is included.
Being a DLL, it's only compatible with Windows. Mac and Linux support may be looked into in the future.