Subj : platforms
To   : borland.public.cpp.borlandcpp
From : "Rob C. " <robb_christiansen@juno.com>
Date : Sat Dec 06 2003 01:57 pm


This is a problem that’s little hard to explain. I don’t know if 
you remember my situation, but some months back I had a need to 
save to a file the text and colors of a particular x/y position 
that where currently on the screen. The savetextattriubute 
function wouldn’t serve my purposes. So you or someone there 
custom-wrote me a function that would do it. The function is 
listed below. 

And this function works great! I use it all the time. 

It works great, that is, in BC++ DOS platform. (but DOS is 
obsolete) When I compile it in Win32, console mode, (which as I 
understand it is similar to the DOS platform) it gives me a 
whole host of errors (listed below). And it’s just the 
savescreen(); function. If I remove it, all my other functions 
work fine.
//-------------------------------------------
in DOS platform. . . .
Info :Making...
Info :Building...
Info :Compiling C:\BC5\Robcpp\goexe.cpp
Warn :  MYFUNCS.H(33,2):Cannot create pre-compiled header: initialized data in header
Info :Transferring to C:\BC5\BIN\tlink.exe @C:\BC5\ROBCPP\GOEXE.R$P

//-------------------------------------------
In Win32, console mode . . .
Info :Making...
Info :Making...
Info :Compiling C:\BC5\Robcpp\goexe.cpp
Error:  MYFUNCS.H(38,26):Undefined structure 'REGPACK'
Error:  MYFUNCS.H(38,29):Too many initializers
Error:  MYFUNCS.H(63,8):'r_ax' is not a member of 'REGPACK'
Error:  MYFUNCS.H(64,6):Call to undefined function 'intr'
Error:  MYFUNCS.H(66,34):'r_ax' is not a member of 'REGPACK'
Error:  MYFUNCS.H(66,42):'r_ax' is not a member of 'REGPACK'
Warn :  MYFUNCS.H(495,34):Comparing signed and unsigned values
Warn :  MYFUNCS.H(499,33):Comparing signed and unsigned values
Warn :  MYFUNCS.H(528,18):Comparing signed and unsigned values
Warn :  MYFUNCS.H(33,2):Cannot create pre-compiled header: initialized data in header

//-------------------------------------------
CODE . . .
int MYFUNCS::savescreen( int col, int row, int endcol, int endrow, char filename[] )
{ //1299
	FILE *fp;
      struct REGPACK rp = {0};
      char attr[10];
      int SAVECOL, recnum;

fp = fopen( filename, "wb" );
     if (fp == NULL)
     {
     printf("saveattr 42 error opening %s for write.\n" , filename );
	fclose(fp);
     getch();
	return 1;
     }

SAVECOL=col;
recnum= 0;

while(1)
{ //55

if( row > endrow ) break;

while(1)
{ //94
gotoxy( col, row );

rp.r_ax = 0x0800;
intr(0x10, &rp);

sprintf( attr, "%x %c ", rp.r_ax, rp.r_ax & 0x00ff );

if( attr[2] == ' ' )
{
attr[5] = attr[3];
attr[3] = attr[1];
attr[2] = attr[0];
attr[0] = '0';
attr[1] = '0';
}

else if( attr[3] == ' ' )
{
attr[5] = attr[4];
//attr[4] = '\0';
attr[3] = attr[2];
attr[2] = attr[1];
attr[1] = '0';
}

//write to binary file
data.recnum = recnum;
data.Sletter[0] = attr[5];
data.Sletter[1] = '\0';
data.Srow = row;
data.Scol = col;
data.Sforegrnd = attr[1];
data.Sbackgrnd = attr[0];
data.nextrec = recnum + 1;

if( fwrite( &data, sizeof( struct SAVESCREEN ), 1, fp ) != 1 )
		{
		clrscr(); // rn2(  0x17 );
		cprintf( "myfuncs 1562 Error reading record: 
                           %d",  recnum );
		break; //getch();
		}

col++;
if( col > endcol )
{ //72
col = SAVECOL;
row++;
break;
} //72

recnum++;
attr[0] = '\0';
} //94

} //55

fclose(fp);
return 0;
} //1299

.