Hierarchy of windows

[Natter]

Hi,

My application window is in the foreground. How can I get a window handle located under my window ?

[nageswaragunupudi]

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function Main()

   local oWnd

   DEFINE WINDOW oWnd FROM 100,100 TO 400,400 PIXEL TITLE "First Window"
   @ 20,20 BUTTON "New Window" SIZE 200,50 PIXEL OF oWnd ;
      ACTION ( CreateNextWindow( oWnd ), oWnd:GoTop() )

   ACTIVATE WINDOW oWnd

return nil

function CreateNextWindow( oMain )

   local oWnd

   DEFINE WINDOW oWnd FROM 200,200 TO 500,500 PIXEL OF oMain
   ACTIVATE WINDOW oWnd

return nil



 

[nageswaragunupudi]

Also you can use the function

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BringWindowToTop( hWnd )

[Natter]

Rao, thank you for your reply. But I didn 't understand how it would help me ? There is a window of someone else's application under my window and I need to get a window handle of this someone else's application. In this case, using the FindWindow() function is not possible

[Jimmy]

hi,

under HMG we have this Function
https://docs.microsoft.com/de-de/windows/win32/api/winuser/nf-winuser-getnextwindow?redirectedfrom=MSDN

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HB_FUNC (GETNEXTWINDOW)
{
   HWND hWnd     = (HWND) HMG_parnl (1);
   HWND hWndNext = GetWindow (hWnd, GW_HWNDNEXT);
   HMG_retnl ((LONG_PTR) hWndNext );
}

GW_HWNDNEXT 2 Returns a handle to the window below the given window.
GW_HWNDPREV 3 Returns a handle to the window above the given window.

[Natter]

Yes, I understand. Rao, Jimmy thank you !

[nageswaragunupudi]

But I didn 't understand how it would help me ?

Sorry. Your question was different and my answer was different.

While adopting Mr. Jimmy's advice, you need not write all the 'C' code.

You can use the FWH function GetWindow() directly in your program with the same syntax.

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GetWindow( hWnd, 2 or 3 )