This is the first time I have used the SetWindowsHookEx function - I have used Windows messages before so I assume there is some similarity to that. However, having read the MSDN info I am still a little confused as to how I should use it.
Recalling that I want my application to respond to the movement or resizing of another application running on the desktop this is what I think I must do.... Hook into the thread in which my target application is running. To do this I need to use FindWindow (I know there will only be one instance of the App so should be unique) and using the handle supplied call GetWindowThreadProcessID to establish the threadID. I can then use SetWindowsHookEx with the WH_CALLWNDPROCRET parameter (as I want to establish when the user has repositioned the application I am monitoring) to hook into the any resizing or positioning of the application running in this thread. I can then use GetWindowsRect to establish the boundaries of the application. Is this correct? JohnB -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Rob Kennedy Sent: 13 February 2008 00:04 To: Borland's Delphi Discussion List Subject: Re: How to find the position on the screen of an application John Barrat wrote: > Cancel that request - I have found the relevant messages - > WM_WINDOWPOSCHANGED and WM_SIZE Those messages are only sent to the window that moved. They're not sent to your program for any windows but your program's. You can't use them to be notified of the movement of another program's windows. To do that, you need to install a hook, in which case those messages will get passed to the hook function as well as the original target window. -- Rob _______________________________________________ Delphi mailing list -> [email protected] http://lists.elists.org/cgi-bin/mailman/listinfo/delphi _______________________________________________ Delphi mailing list -> [email protected] http://lists.elists.org/cgi-bin/mailman/listinfo/delphi
