1999-04-23  Michael Natterer  <mitschel@cs.tu-berlin.de>

	* app/brush_select.[ch]
	* app/pattern_select.[ch]: made the previews change their size in
	sync with resizing the dialog. The previews auto-resize with their
	parent frame now. Connect to the preview's "size_allocate" signal,
	not to the frame's, don't "signal_connect_after". Get the size of
	the preview from it's allocation and not from it's requisition.
	There's no need to remember width, height and the frame in the
	structures anymore, so I kicked them out. Tweaked the code to look
	more similar.