From: "Tim B" Newsgroups: comp.os.msdos.djgpp Subject: Frustrating mouse problem Lines: 21 X-Newsreader: Microsoft Outlook Express 4.72.3110.1 X-MimeOLE: Produced By Microsoft MimeOLE V4.72.3110.3 Message-ID: Date: Sun, 31 Oct 1999 01:51:26 -0500 NNTP-Posting-Host: 207.112.213.26 X-Trace: newsfeed.slurp.net 941352610 207.112.213.26 (Sun, 31 Oct 1999 01:50:10 CDT) NNTP-Posting-Date: Sun, 31 Oct 1999 01:50:10 CDT To: djgpp AT delorie DOT com DJ-Gateway: from newsgroup comp.os.msdos.djgpp Reply-To: djgpp AT delorie DOT com In the svga graphics mode program I'm currently writing with grx23 a strange problem occurs when I move the mouse cursor near a line (particularly a vertical line). Pixels with the same color as the line start to appear suddenly and seemingly randomly nearby but they only seem to appear when the mouse is moving. Nor do they seem to appear at resolutions lower than 640x480. I thought maybe I had coded something incorrectly so I ran the example mouse program in the test directory and it was happening in that program too. I recently upgraded to a faster cpu (cyrix 333) so I thought maybe it was a quirk with grx23 (I had never noticed this problem with my 486 cpu) so I installed allegro and ran the ex13 program and it was happening there too. I should mention that this problem doesn't happen with the win98 mouse cursor. I really need the mouse to work correctly without creating these extra pixels. If anybody can help with a fix or work around or even pointing me in the right direction to figuring this out I'd be extremely grateful.