Mail Archives: djgpp/1997/07/31/23:04:08
From: | frenchc AT cadvision DOT com (Calvin French)
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Newsgroups: | comp.os.msdos.djgpp
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Subject: | Re: HELP! Unidentifiable error, may be null pointer bug
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Date: | 26 Jul 1997 19:50:11 GMT
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Organization: | CADVision Development Corp.
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Lines: | 90
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Message-ID: | <5rdkdj$1k20@elmo.cadvision.com>
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References: | <5r3k0n$chb$1 AT excalibur DOT flash DOT net>
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NNTP-Posting-Host: | ts7ip234.cadvision.com
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Mime-Version: | 1.0
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To: | djgpp AT delorie DOT com
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DJ-Gateway: | from newsgroup comp.os.msdos.djgpp
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In article <5r3k0n$chb$1 AT excalibur DOT flash DOT net>, kwe1 AT flash DOT net says...
It seems like you're using C; mainly I do C++ but I'll try to help...
/void setpalzero ()
/{
/ int i;
/ COLOR *temp;
/ for (i = 0; i < 256; i++)
/ temp[i].red = temp[i].gre = temp[i].blu = 0;
/
/ SlamPal (temp);
/}
Are you allocating memory for temp? Can't be sure, but should you do: COLOR*
temp = new COLOR[256] (in C++, in C it might be COLOR* temp; <crlf> temp =
malloc( sizeof(COLOR) * 256): I think...)
/void main ()
/{
/ setvideo(0x13);
/
/ /*byte *waitpic = "wait.pcx";
/ byte *waitimg;
/ COLOR *palw;
/ PCXheader headw;*/
/ int wth, wth2;
/ /*LoadPCXinfo(waitpic, &headw, palw);
/ wth = (headw.xmax - headw.xmin + 1) * (headw.ymax - headw.ymin + 1);
/waitimg = malloc(wth);
/ LoadPCX(waitpic, waitimg, &headw, palw, 1);
/ setpalzero ();
/ dosmemput (waitimg, 64000, 0xa0000);
/ fromblack (palw);*/
/
/ byte *file1 = "art5.pcx", *file2 = "art3.pcx";//, *file3 = "art1.pcx";
/ byte *image1, *image2;//, *image3;
/ COLOR *Pal1, *Pal2;//, *Pal3;
/ PCXheader head1, head2;//, head3;
/
/ LoadPCXinfo(file1, &head1, Pal1);
/ wth = (head1.xmax - head1.xmin + 1) * (head1.ymax - head1.ymin + 1);
/image1 = malloc(wth);
/ LoadPCXinfo(file2, &head2, Pal2);
/ wth2 = (head2.xmax - head2.xmin + 1) * (head2.ymax - head2.ymin + 1);
/image2 = malloc(wth2);
/ /*LoadPCXinfo(file3, &head3, Pal3);
/ wth = (head3.xmax - head3.xmin + 1) * (head3.ymax - head3.ymin + 1);
/image3 = malloc(wth);*/
Looks to me that you aren't allocating memory for your palettes, I don't
know for sure though...
/ LoadPCX(file1, image1, &head1, Pal1, 0);
/ LoadPCX(file2, image2, &head2, Pal2, 0);
/ /*LoadPCX(file2, image2, &head2, Pal2, 0);
/ LoadPCX(file3, image3, &head3, Pal3, 0);
/
/ toblack (palw);
/ free (waitimg);*/
/
/ setpalzero(); //remember to comment setpalzero when the bugs are gone
/ dosmemput (image1, 64000, 0xa0000);
/ //SlamPal(Pal1);
/ fromblack(Pal1);
/ delay (500);
/ toblack(Pal1);
/
/
/ /*dosmemput (image2, 64000, 0xa0000);
/ SlamPal (Pal2);
/ fromblack(Pal2);
/ delay (100);
/ toblack(Pal2);
/
/ free (image1);
/ free (image2);
/ free (image3);*/
/
/ setvideo (0x03);
/}
/
/
/Please help me! This is my last resort... I've been troubleshooting this
/one program for about a week, and I have no idea what to do. Please reply
/by e-mail kwe1 AT flash DOT net .
Good luck!!!
- Calvin -
- Raw text -