Thread: Next top window

how could i retrieve the handle to the window that is put on top next. for example if you had an app open and hit a button ,"Retrieve handle" and then go to the window bar on the bottom and click a window. that window opens . how would you retrieve the handle to that window? i hope i explained it good enough and you know what i'm taking about!

Not sure I totally understand what you are doing....but perhaps GetForegroundWindow() ??

i think i would use GetForegroundWindow() but how would I know that the foregound window has changed from my porgram to another one, and then get the other window's handle.
I hope that makes a little more sense...
thank you in advance.

You could trap WM_KILLFOCUS...this is sent when the input focus is lost from your window.....the wParam of that message is the window that gets input focus after you......

Does that help?

I can't get it to work, mabey a code sample? thanx anyway

Originally posted by canine
I can't get it to work, mabey a code sample? thanx anyway

Hmm..I see your point.........the SDK docs say that WM_KILLFOCUS can pass NULL as the wParam....but it seems to do this a lot....

Anyway...I tried the following...it is still not foolproof.....

Code:

case WM_KILLFOCUS:
           hNewFocus = (HWND)wParam; //First Try
           if(hNewFocus == NULL)
           Sleep(2000);
           hNewFocus = GetForegroundWindow();//Second Try
           if(hNewFocus == NULL)
           MessageBox(hwnd,"Error, could not find window","",MB_OK);
           else
           SendMessage(hNewFocus,WM_SETTEXT,0,
                       (LPARAM)"Damn you!! You stole my focus!!");
           break;

That code tries to find the new window and change its title......

If NULL is passed by WM_KILLFOCUS, it waits 2 seconds and tries GetForegroundWindow().......

Its still far from practicle though...........