Possible Win32 bug: gdk_draw_pixmap and GtkAdjustment

[Michael Mitton <Michael Mitton millersville edu>]

I seem to be finding a lot of bugs right now...

Here's what I found this time.  Again, using the .dll's from
http://user.sgic.fi/~tml/gimp/win32/

Are these new bugs, or are they known?  I'll make a sample program for you
if they're new.

Thank you
-Michael

1.	gdk_draw_pixmap(widget->window, gc, widget->window, ...) (ie, used
for moving text during a scoll) will freeze the machine. (note the src and
dest are the same)  Problem is "fixed" when I create a temporary pixmap and
use that as an in-between.  I've verified all of the variables used here are
sane.

Here's the code snip...

#ifdef __CYGWIN__
  //  This is what needs to be run under windows
  temp = gdk_pixmap_new(widget->window, width, count * term->charheight,
-1);
  gdk_draw_pixmap(temp,
		  term->scroll_gc, /* must use this to generate expose
events */
		  widget->window,
		  offx, offy + (firstrow + offset) * term->charheight,
		  0, 0,
		  width, count*term->charheight);
  gdk_draw_pixmap(widget->window,
		  term->scroll_gc, /* must use this to generate expose
events */
		  temp,
		  0, 0,
		  offx, offy + firstrow * term->charheight,
		  -1, -1);
  gdk_pixmap_unref(temp);
#else
  //  This is the original code that works fine under Linux
  gdk_draw_pixmap(widget->window,
		  term->scroll_gc,
		  widget->window,
		  offx, offy + (firstrow + offset) * term->charheight,
		  offx, offy + firstrow * term->charheight,
		  width, count*term->charheight);
#endif

2.	Modification of the values in the GtkAdjustment structure seem to
freeze the machine too.  I haven't found a work-around for this yet.  I've
verified all of the variables used here are sane.

Here's the code snip...

static void 
zvt_term_fix_scrollbar (ZvtTerm *term)
{
#ifdef __CYGWIN__
  //  Have not found a fix yet
#else
  //  This is the original code that works fine under Linux
  GTK_ADJUSTMENT(term->adjustment)->upper = 
    term->vx->vt.scrollbacklines + term->vx->vt.height - 1;

  GTK_ADJUSTMENT(term->adjustment)->page_increment = 
    term->vx->vt.height - 1;

  GTK_ADJUSTMENT(term->adjustment)->page_size =
    term->vx->vt.height - 1;

  GTK_ADJUSTMENT(term->adjustment)->value = 
    term->vx->vt.scrollbackoffset + term->vx->vt.scrollbacklines;

  gtk_signal_emit_by_name (GTK_OBJECT (term->adjustment), "changed");
#endif
}