From: "Gautam N. Lad" <gautam AT interlog DOT com>
Newsgroups: comp.os.msdos.djgpp
Subject: Blitting warning under GRX 2.0 using GrBitBlt
Date: 18 Jan 1997 22:47:38 GMT
Organization: InterLog Internet Services
Lines: 47
Message-ID: <5brjua$q1q@news.interlog.com>
NNTP-Posting-Host: ip203-89.cc.interlog.com
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

Hi,
I was pleased with Hartmut Schirmer's reply concerning
getimage() / putimate() equivalent functions under GRX (blitting).
Unfotrunately, since I like my compiles to be Warnings/Errors
free, I have a problem.  Here's the snippet I used that Harmut
gave me (I filled in the variables for the x1,y1, and the width,height
that are required for the size of the portion of the screen):


/* Global variables */
  GrContext ic;
  char *memory[4]; /* 4 is magic */
 int planes, planesze, i;

void GetBuf()
{
 planes = GrNumPlanes();
  planesze = GrPlaneSize(400,175);
  for (i=0; i < planes; ++i)
   memory[i] = malloc(planesze);
    while (i<4) memory[i++] = NULL;
    GrCreateContext(420,195, memory, &ic);
    GrBitBlt(&ic, 0, 0, NULL, 190,170, 610,365, GrWRITE);
}


And here's the warning I get after compilation:

tb.cpp: In function `void GetBuf()':
tb.cpp:390: warning: ANSI C++ forbids implicit conversion from 
            `void *' in assignment


Any suggestions?

Bye!
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* Gautam N. Lad                                    *
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