From: wdhwang AT ms4 DOT hinet DOT net ()
Newsgroups: comp.os.msdos.djgpp
Subject: [Help]Graphic question??
Date: 24 May 1998 13:27:22 GMT
Organization: DCI HiNet
Lines: 28
Message-ID: <6k977q$a5o@netnews.hinet.net>
NNTP-Posting-Host: ms4.hinet.net
NNTP-Posting-User: wdhwang
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Precedence: bulk

Hi, dear all:
    I use DJGPP v2.0 for MSDOS, the graphic library use GRX20 and 
BCCGRX2. 
    Now I am programming graphic applications under the resolution
640X480 16 colors. Is it possible drawing something out of the boundary?
For example, the normal drawing area is from (0,0) to (639,479). And I
means can I draw line or bar in the (0,500) or (0, 600) such positions?
Then I use getimage() and putimage() function to move the area into 
normal drawing area. I use this kind method to avoid screen flashing
when the screen is refresh.  Because in the VGA 12 mode, only 1 page
can be used. So, I only know this way to do such things. But the drawing
library, including GRX20 or BCCGRX20, cannot work out of the boundary.

    Is there any one have any good idea or suggestions to help me to
solve the problem? 
    Thanks in advance ^_^

--

						Sincerely yours
						Wen-Dwo Hwang 
==================================
Wen-Dwo Hwang     
E-mail :
wdhwang AT ms4 DOT hinet DOT net
wdhwang AT csie DOT nctu DOT edu DOT tw
==================================