[comp.windows.ms.programmer] Child window in Parent Window, how do I make child unmovable?

ww@beach.cis.ufl.edu (Wayne Wolf) (04/25/91)

Attention all Windows gurus!!!  This is a struggling novice Windows
programmer's cry for help.

I have just received Turbo Pascal for Windows and I'm having a 
little difficulty making the transition from Turbo Vision to Windows.

The problem:
------------
I am trying to create a window (child) within a window (parent).  I
want the child window to be constrained by the boundaries of the 
parent window AND I want it to be unmovable.  The child window will
have a title and a border.

My inept solution:
------------------
I have successfully gotten the child window created and belonging to 
the parent, with the title and border.  This was done by setting the 
child window's style as folows:

      Style := ws_Child or ws_Caption or ws_Visible;

The window comes up fine and everything is dandy, EXCEPT that I am
allowed to move the danged child window all around inside the parent.
I want to inhibit this behavior.  I've looked high and dry for a simple
way to prevent the child window from being movable, and I've come up
empty-handed. The move behavior seems to be tied to having that title-bar,
cuz if I set the window to eliminate the ws_Caption option and add 
ws_Border style, then the window cannot move. 

The not-so-simple solution I can see is to intercept the Mouse-Down and
Mouse-Move messages to prevent this combination from moving the window.
At my level of (in)experience, this is a monumental task right now, and
I'd like not to have to do it this way if there is a much easier solution.

I am using ObjectWindows classes (specifically my own descendants of 
TWindow) for my implementation, as follows:

   Constructor TChildWindow.Init(AParent:PWindowsObject; ATitle:PChar);
   Begin
      TWindow.Init(AParent,ATitle);
      with Attr do begin
         Style := ws_Child or ws_Caption or ws_Visible;
         x := 10; y:= 10; W:=200; H:=200;
      end; {with}
   End;

Any suggestions are appreciated.  Solutions do not have to be 
ObjectWindows solutions, or even Pascal oriented.  If there are any 
Windows functions that set a window to non-movable this would be ideal.

Thanx in advance.


..


Wayne Wolf
Struggling novice Windows programmer

Internet : ww@beach.cis.ufl.edu

bonneau@hyper.hyper.com (Paul Bonneau) (04/26/91)

In article <1991Apr24.183126.5328@b11.ingr.com> ww@beach.cis.ufl.edu writes:
>
>The problem:
>------------
>I am trying to create a window (child) within a window (parent).  I
>want the child window to be constrained by the boundaries of the 
>parent window AND I want it to be unmovable.  The child window will
>have a title and a border.
>
Trap the WM_SYSCOMMAND message, and if wParam is SC_MOVE,
*don't* call DefWindowProc().

cheers - Paul Bonneau.