Bring another window to the top

Brad Wilson -- bradw@netnet.net
Thursday, January 11, 1996

Environment: NT 3.51 + VC++ 4.0 (no patches) + MFC 4.0

I'm having a not-so-fun time trying to figure out something that should be
extremely obvious.  In my application, I want to only have one copy running.
In order to facilitate this, I have done this in InitInstance():

   CWnd* wnd = FindWindow( 0, "My Application Title" );

   if( wnd )
      {
      //  do other fun stuff here ...
      return FALSE;
      }

The window search works fine.  What I'm trying to get to happen, though,
is to activate (bring to front) the first window just before I return
FALSE.  I have tried:

   wnd -> SetActiveWindow( );

which should work, but doesn't do anything.  Likewise:

   wnd -> SetFocus( );

doesn't help anything.  A call to:

   wnd -> SetWindowPos( &wndTop, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE );

does bring the window to the foreground, but does not make that window
active.  I have tried any number of combinations, but I just CANNOT
bring the window to the front of the Z-order and make it active.  I
have tried running the application from File Manager (thinking VC++
might've been doing some focus-trickery), and File Manager minimizes
itself but its icon remains active (the window is on the screen and
visible, but inactive).

HELP!  Why does this plague me so?  :-)
Brad

--
class CBradWilson : public CWorldWatchProgrammingTeam {
  public:
    CString GetInetAddr()   { return CString("bradw@exptech.com");      }
    CString GetPhone()      { return CString("+1 (810) 620-9803");      }
    CString GetURL()        { return CString("http://www.exptech.com"); }
    CString GetDisclaimer() { return CString("All I say is fact :-p");  }
};

"Money is the living power that dies without its root. Money will not serve
 the mind that cannot match it. Is this the reason why you call it evil?"

---

Brad Wilson -- bradw@netnet.net
Tuesday, January 16, 1996

>> Try SetForegroundWindow() I think it worked for me once.

On a hunch, just after I sent the message out, I found SetForegoundWindow()
by looking at the Win32 definition of SetActiveWindow(), write provided
this advice (which MFC did not):

"The SetActiveWindow function activates a window, but it only brings the
window to the foreground if the window is owned by the thread making the
call to SetActiveWindow().

"The SetForegroundWindow function, on the other hand, activates a window
and forces the thread that created the window into the foreground."

Since all the other times I used SetActiveWindow it was in the context
of the correct thread, I never knew its limitations.

Thanks!
Brad

--
class CBradWilson : public CWorldWatchProgrammingTeam {
  public:
    CString GetInetAddr()   { return CString("bradw@exptech.com");      }
    CString GetPhone()      { return CString("+1 (810) 620-9803");      }
    CString GetURL()        { return CString("http://www.exptech.com"); }
    CString GetDisclaimer() { return CString("All I say is fact :-p");  }
};

//  QOTW: "There is no right or wrong ... just popular opinion"

---

| Вернуться в корень Архива |