How to find WindowRef of Apple Help Viewer application?

In my Carbon application upon display of Preference Panes, I have a link which when clicked opens up Apple Help Viewer.

The problem I am facing is the Help Viewer Window is behind my preference pane window.

I would like to keep the Help Viewer window on top of the Preference Pane.

Is there any way to get the WindowRef of the Help View开发者_StackOverflow社区er app so that I can use SendBehind API to send the help viewer behind the current window.

Thanks a lot

Regards, Marc

Your question is confusing; you say the problem is that the help viewer window is behind the preference pane window, but that you want to use SendBehind to send the help viewer behind the current window. I'm guessing you meant to say that the help viewer is in front. This is a common annoyance, and I don't think there is a solution.

As for the more specific question, no, you can't get a WindowRef for a window in another process. It's in a different address space.

The Help Viewer is in a different process, so SendBehind isn't going to help you. It sounds more like your preferences window is in the wrong layer. What window class are you using? Are you changing its window group or anything like that?