Conference bulova::decw_jan-89_to_nov-90

RE:.0

I think I can answer your first question.

>         I am attempting to create custom icons for DECwindows applications.
>           *  The window manager ignores my request if the ICON SIZE is set
>              to SMALL in the CUSTOMIZE WINDOW... portion of the Session
>              Manager box.   This happens  even when I specify a bitmap
>              file of 16x16 pixels instead of the usual 32x32.
First point: the small icon should be 17x17.

Second point: there are TWO pixmap resources on the shell, one is for
the "small" pixmap and one for the "large".  The "small" one is used
on the shell title bar AND, if the session manager is set to "small icon"
mode, it is also used in the icon box.  The large icon resource is only
used in the icon box when "large icon" mode is set.  Naturally, both
resources should be set by the application.

Here is a small C code segment from a sample main program.  (This
code assumes the icons are stored in the UIL/UID file.)

DRMRegisterArg r_toplevel_fetch_arguments[] = {
	{ XtNiconName, (caddr_t) K_ICON_TITLE_NAME },
	{ XtNiconPixmap, (caddr_t) K_BIG_ICON_NAME },
	{ XtNiconifyPixmap, (caddr_t) K_LITTLE_ICON_NAME }};
int l_toplevel_fetch_count = array_size( r_toplevel_fetch_arguments );

   ...

    /* Set the icons and various attributes for this application. */
    if (DwtFetchSetValues(ar_UIHierarchy,
		ar_toplevel_object,		/* shell widget id */
		r_toplevel_fetch_arguments,
		l_toplevel_fetch_count) != DRMSuccess)
	{
	printf("Can't set shell/main_window attributes.\n");
	return 0;
	};

Good luck.

RE: .0  (Hi Dave)

  My FORTRAN is rusty so the following is the steps to take in create/changing
your icon pixmap (small) than the code to do the work.  I have done this from
Ada.

  First, you need to create your pixmap.  The easiest way is to use BITMAP.EXE
found in DECW$EXAMPLES (under VMS).  Something like the following:

	$ mc decw$examples:bitmap my_icon.bit 17x17

  Note the size of the pixmap...this is important as was pointed out in .-1.

  Since the property you want to change is unique only to DECwindows you will
need the DEC_WM_HINTS record structure.  This is the property that you will
modify.  I found the structure definition in SYS$LIBRARY:DECW$DWTSTRUCT.FOR
with the spec of STRUCTURE /dwt$wm_hints_rec/.

  You will need to obtain the atom ID of this property.  This is done with
the XInternAtom call using the property name of DEC_WM_HINTS.  The case is
important.

  The next step is to create a bitmap/pixmap ID for your icon.  As was done
in the code example in .0 you want to use the call XReadBitmapFile.  Remember
that a bitmap is really a pixmap with a depth of 1.

  With your object, of type dwt$wm_hints_rec, you want to set the element
dwt$l_hints_value_mask to the value of dec$c_decwm_iconify_pixmap_mask and
then set the element dwt$l_hints_iconify_pixmap to the value of the bitmap
ID returned from the XReadBitmapFile call.

  The window that you will affect is the top level window of your tree.  If
this window is mapped then you will want to unmap it before changing the
property.  After unmapping the window you will want to make the call
XChangeProperty.  The following is what is assigned to each parameter:

  display	=> obvious
  window	=> top_level_window_id
  property_id	=> the_atom_returned_from_XInternAtom
  type_id	=> the_atom_returned_from_XInternAtom
  format	=> 32
  change_mode	=> PropModeReplace
  prop_data	=> dwt$wm_hints_rec_variable
  num_elements	=> 9

  Once this call has been made then just map the window and if all went ok you
should see your icon pixmap.

  I don't believe I've left anything out (I'm doing this from memory...).  If
someone spots an error then please point it out.

  Hope this helps...

					-=> Jim <=-

   ok...ok...ok...I will say it before someone else does :-)

  In the future, questions like these should be directed to the

	DECWINDOWS_PROGRAMMING

  conference.  (Press KP7 to select this conference)

					-=> Jim <=-

    See notes #34,  #2361,  #2371 (I am now taping these
    numbers to the wall of my office :-))
    
    In #34 there are some programming examples,  you should
    be sure to allocate the DECWmHints structure, which the
    code portion doesn't do.
    
    This stuff is all documented in DECwindows V2 documentation.
    
    RE: .0  Zooming
    
    DECwindows  window manager does not support zooming.
    
    - Nancy

    Thanks for the replies/info/pointers.
    
    
    							Dave
    
    p.s.  Sorry, didn't know about the DECwindows programming conference.