A ploblem with using _Menu_ClickPopup()

[gzken]

Hi,

I am tring to use AutoIt to automate an external program, the external program should run in background just like launched by windows' schedule.

In my script, I use the _Menu_ClickPopup() to click a popup menu generated by external program. When the script running in foreground, it completed successfully. However, when the script running in background, I found that it was holding in function _Lib_PopupWait(), it seemed that could not capture the popup menu's handle and pop up a msgbox.

Is it no popup menu can be generated in background or the _Menu_ClickPopup() function can not work in background?

Thanks.