How to test if Custom HTML Prompt is already open

[karlfranz]

Thanx. I had already tried testing for %LastWindowID% and I couldn't get it to work.

I think the reason is explained by Peter here.

@peternlewis

The Pause does not have to be 1.5 seconds, but it does have to exist because the action is asynchronous (which it has to be or the next action would not run, and you could not get the token result) and so the window will not necessarily be created and displayed by the time the window is run.

The window creation has to be asynchronous in order to test for LastWindowID. But, because the interval between calls is so brief (less than 0.5 sec), the window hasn't had a chance to be created yet. So by the time the next instance of the macro is called, the previous instance hasn't obtained a window ID yet and the IF condition fails.

BTW, my Custom HTML Prompt is a transparent, frameless, HUD with no title, so I can't check for a title. The HUD is just supposed to pop up in the corner of the display whenever the mixer's Main audio level changes and display its value briefly then go away.