Make installer topmost window.

NEHOG
19th February 2008 17:19 UTC

Make installer topmost window.
The 'powers at be' asked that we make the installer a topmost window (in windows one would use the API) :

SetWindowPos Me.hwnd, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOSIZE Or SWP_NOMOVE

This keeps the application (the installer in this case) always on top of other windows (like TaskManager...) so it won't get lost. (I think marketing feels that users are loosing the installer for some reason...)

Search didn't really get me anything, so if anyone has suggestions...
;)

Afrow UK
19th February 2008 17:32 UTC

Use System plug-in.

Stu

NEHOG
20th February 2008 20:42 UTC

Originally posted by Afrow UK
Use System plug-in.

Stu

Thanks Stu. For others later looking at this thread, here is the final result:



!include "${NSISDIR}\Examples\System\System.nsh"
# --- Define and make accessible the system plugin.
# before 2.07 !include "${NSISDIR}\Contrib\System\System.nsh"

# --- The function to force a window to be topmost. 

Function WindowToTop
        ;Save existing register values to the stack
        Push $0
        Push $1
        Push $2
        Push $3
        Push $4
        Push $5
        Push $6
        Push $7

;       HWND_TOPMOST not defined in the system plugin, so we define it here instead.  
        !define HWND_TOPMOST   -1
  
;       SetWindowPos(Me.hwnd, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOSIZE Or SWP_NOMOVE) 'These two lines bring the window

        System::Call "User32::SetWindowPos(i, i, i, i, i, i, i) b ($HWNDPARENT, ${HWND_TOPMOST}, 0, 0, 0, 0, ${SWP_NOMOVE}|${SWP_NOSIZE})"
 
        ;Restore register values from the stack
        Pop $7
        Pop $6
        Pop $5
        Pop $4
        Pop $3
        Pop $2
        Pop $1
        Pop $0
FunctionEnd

The WindowToTop function then can be called from within the NSIS script as needed.

Anders
20th February 2008 21:56 UTC

you don't have to save the registers if you are not using any of them ;)

NEHOG
21st February 2008 01:47 UTC

Good point... (Teach me to cut-n-paste!)