Flashes the game window and/or its taskbar button.

flags can be:

• window_flash_window
  Flashes the window
• window_flash_tray
  Flashes the taskbar button
• window_flash_all
  Flashes both the window and the taskbar button
• window_flash_timer
  Flashes continuously until told to stop
• window_flash_timernofg
  Flashes continuously until told to stop or until the game window regains focus.
• window_flash_stop
  Stops any current flashing

These can be combined together.

count is the number of times to flash.
Defaults to 0 if not provided.

frequency is the delay between flashes, in milliseconds. Leave as 0 o

Returns whether successful (read: whether the DLL is loaded).

Examples:

// Start flashing:
window_flash(window_flash_all|window_flash_timer);

// Stop flashing:
window_flash(window_flash_stop);

// Flash 3 times at default pace:
window_flash(window_flash_all, 3);

// Flash title bar 2 times slowly:
window_flash(window_flash_window, 2, 700);

// Flash taskbar button 5 times quickly:
window_flash(window_flash_tray, 5, 150);

// Flash window and taskbar until the window has focus (if it doesn't right yet):
window_flash(window_flash_all|window_flash_timernofg);

Changes the game window taskbar button's progress state.

status can be:

• window_progress_none
  No progress shown (default)
• window_progress_unknown
  Undetermined progress. Shown as either an animation on the taskbar button, or just a green line overlay (Win10).
• window_progress_normal
  The kind you see when a web browser is downloading a file. Usually green.
• window_progress_paused
  The kind you see when pausing a file download. Usually yellow/orange.
• window_progress_error
  The kind you see when there is a download error. Usually red.

Examples:

window_progress(window_progress_none);
window_progress(window_progress_unknown);
window_progress(window_progress_normal, 1, 3);
window_progress(window_progress_paused, 2, 4);
window_progress(window_progress_error, 5, 7);