Hi, I want to make the firefoxwindow transparency. But in my program, I have to indicate the name of the window. For example, the name of notepad is "notepad" and the name of the normal windows explorer is "ExploreWClass". But the name of the firefoxwindow isn't "firefox" or "firefox.exe".

Does anyone know, how I can find out the name of the firefoxwindow?

Frozzon I don't quite understand what you're saying
What kind of transparency you want Firefox to have?

Are you using a software to get the transparency?
Please give us more details

So you want to know the class id of the Firefox Window?
For me, its MozillaUIWindowClass

Note that the dialogs of Firefox (e.g. Settings) have an ID of MozillaDialogClass

Yes, I mean the class ID   . But MozillaUIWindowClass and MozillaDialogClass don't work   . I use "windows optimizer 4" as software.

Try: http://chime.tv/products/glass2k.shtml