🚀 go-pugleaf

> If I use XSetStandardProperties and specify an icon to window
> manager, the icon can not be destroyed.  In other words, if I
> XFreePixmap(my icon) after setting the standard properties, the
> window manager looses the icon.

(That is a rather amusing image, the icon going wandering all over the
screen instead of staying put...I'll assume you meant "loses".)

First, you have a bit of trouble setting up the icon pixmap.  It's not,
as the name implies, truly an icon pixmap; it's really an icon bitmap.
You shouldn't be doing

	icon_pix = XCreatePixmapFromBitmapData(disp,RootWindow(disp,scrn),
		icon_bits,icon_width,icon_height,BlackPixel(disp,scrn),
		WhitePixel(disp,scrn),DefaultDepth(disp,scrn));

instead, you should be doing something like

	icon_pix = XCreatePixmapFromBitmapData(disp,RootWindow(disp,scrn),
		icon_bits,icon_width,icon_height,1L,0L,1);

Read the ICCCM, section 4.1.2.4; in particular, it says

	The icon_pixmap field may specify a pixmap to be used as an
	icon.  This pixmap should be:
	
	o One of the sizes specified in the WM_ICON_SIZE property on
	  the root, if it exists (see Section 4.1.3.2).
	
	o 1-bit deep.  The window manager will select, through the
	  defaults database, suitable background (for the 0 bits) and
	  foreground (for the 1 bits) colors.

But that is presumably not your problem, since your icon pixmap is
getting used.

However, why would you think you should be able to destroy the icon
pixmap to begin with?  I don't see anything that gives this impression;
I may just not have looked in the right place....

> I'v included a test program.  If you try to iconify, you'll get my
> icon.  But if you uncomment line 132, and try to iconify, you'll get
> no icon at all!.

This seems like a bug; the window manager should be robust in the face
of a nonexistent pixmap in the icon-pixmap field....

					der Mouse

			old: mcgill-vision!mouse
			new: mouse@larry.mcrcim.mcgill.edu