From: XXguille AT XXiies DOT XXes (Guillermo Rodriguez Garcia) Newsgroups: comp.os.msdos.djgpp Subject: Re: Windows trashes my 800x600 graphics mode program. Date: Mon, 03 May 1999 20:23:43 GMT Organization: Telefonica Transmision de Datos Lines: 21 Message-ID: <372e051a.513808@noticias.iies.es> References: <372DD4FF DOT F4C73D1 AT ridgecrest DOT ca DOT us> NNTP-Posting-Host: iies175.iies.es Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-Newsreader: Forte Agent 1.5/32.451 To: djgpp AT delorie DOT com DJ-Gateway: from newsgroup comp.os.msdos.djgpp Reply-To: djgpp AT delorie DOT com El día Mon, 03 May 1999 09:55:27 -0700, Kevin Hise escribió: >Are you referring to this code snipet? > >> > ................................................................. >> > Interrupt 2Fh Function 4001h >> > >> > mov ax, 4001h ; Notify Background Switch >> > int 2fh > >...this isn't a hook, it's a call. I didn't see any other code posted >to this thread. Hook int 2Fh and see if you get called with ax = 0x4001. Regards, GUILLE ---- Guillermo Rodriguez Garcia XXguille AT XXiies DOT XXes (ya sabes :-)