Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ncar!ames!haven!mimsy!tove.umd.edu!tian
From: tian@tove.umd.edu (jianhui Tian)
Newsgroups: comp.windows.x
Subject: How to erase lines and rectangles?
Message-ID: <18556@mimsy.UUCP>
Date: 14 Jul 89 20:58:04 GMT
Sender: nobody@mimsy.UUCP
Reply-To: tian@tove.umd.edu (jianhui Tian)
Organization: University of Maryland, Dept. of Computer Sci.
Lines: 21


Help! Help!

I am a new X window system user. In the process of writing applications,
I have encountered with the problem or erasing lines and blocks.
[Acturally I am trying to make blocks(rectangles) appear to be moving
 by erase the old ones and redraw the new ones]
I have tried both
			XClearArea()
	and		XFillRectangle()
But none of them worked.

It seems that XClearArea only works in text windows; and XFillRectangle
only toggles the initial contents inside the rectangle area.

Can anyone in the net tell me what Xlib function to use....

Thanks a lot in advance.


Jeff Tian