Overlay or Top Most Control

[Randal Lanning]

This one is puzzling. I have a proprietary control which seems to want to remain the top most, regardless of what I attempt to overlay, in this case a small graphic box.

The first control has a background image of a computer monitor or television screen. Think of it as a part of the control that is static and cannot be removed.

Now, I'm using GDI+ to create a simple rectangle that fits within the television screen or would if it would be the top most object.

I miniaturized the control and can see the image that should be overlaid so I know that is working.

The question is: How do I change an object's z-order or make it overlay another?

[Chris Holbrook]

See the setwindowspos API, possibly.

[Kurt Kuzba]

Originally Posted by Chris Holbrook

See the setwindowspos API, possibly.

That looks like it should work.
http://msdn.microsoft.com/en-us/libr...(v=vs.85).aspx
This example code will swap the z-order of two CONTROL objects, one a LABEL, and the other a BUTTON.

'compilable example code
#COMPILE EXE
#DIM ALL
#INCLUDE "win32api.inc"
FUNCTION PBMAIN () AS LONG
   LOCAL hDlg AS DWORD
   DIALOG NEW PIXELS, 0, "Change Z Order", , , 220, 50, %WS_OVERLAPPEDWINDOW TO hDlg
   CONTROL ADD LABEL , hDlg, 100, "Label Control", 5, 5, 200, 20, %SS_CENTER
   CONTROL ADD BUTTON , hDlg, 101, "Button Control", 10, 10, 135, 30
   DIALOG SHOW MODAL hDlg, CALL DlgProc TO hDlg
   FUNCTION = hDlg
END FUNCTION
CALLBACK FUNCTION DlgProc()
   STATIC topctl AS LONG
   LOCAL hctl AS DWORD

   SELECT CASE CB.MSG
      CASE %WM_INITDIALOG
      CASE %WM_COMMAND
         SELECT CASE CB.CTL
         CASE %IDCANCEL
            DIALOG END CB.HNDL
         CASE %IDOK, 101
            topctl = 100 - (topctl = 100)
            CONTROL HANDLE CB.HNDL, topctl TO hctl
            SetWindowPos(hctl, %hwnd_top, 0, 0, 0, 0, %swp_nosize OR %swp_nomove)
            CONTROL REDRAW CB.HNDL, topctl
         END SELECT
   END SELECT
END FUNCTION

[Randal Lanning]

That sounds like what I'm looking for. I'll get to try it tomorrow afternoon after I get home from work. I don't have the latest version of my source code on my laptop.

I'll let the forum know if it works. It may help others also which is a bonus.
================
It sort of worked. The overlay flashed before the background overlaid it. I tried also sending the custom control to the back and it still pops on top. I'm thinking of other ideas too, this is just the latest attempt.