Описание Кода

[MahovIV]

Объясните, пожалуйста, что делает эта программа? Пожалйста, в комментариях.

#include <graphics.h> // initgraph(), ...
#include <conio.h>	 // getch(), kbhit(), gotoxy()
#include <stdio.h>	 // printf()
#include <dos.h>	  // intr()
#include <D:\BC31\mousedsg.dat>

unsigned NewCurs[32];
int HotPointX,HotPointY;

void main()
{

for( int i=0; i<16; i++ )
{ NewCurs[i] = (~MouseDsgn1[i]);
NewCurs[i+16]= MouseDsgn1[i];
}
HotPointX=(char)(MouseDsgn1[16]>>8);
HotPointY=(char) MouseDsgn1[16];

struct REGPACK reg;
reg.r_ax=0; intr(0x33,&reg); 
if (reg.r_ax == 0)		  
{ printf("............! Press any key to exit...");
getch(); return; }
else
{ printf("............ %d .... ....!", reg.r_bx);
getch(); }

int gdriver = DETECT, gmode, errorcode;
initgraph(&gdriver,&gmode,"G:\\PROGRAMS\\BC31\\BGI");
if((errorcode = graphresult()) != grOk)
{
printf("Graphics error: %s\n", grapherrormsg(errorcode));
printf("Press any key to exit..."); getch(); return;
}

reg.r_bx=HotPointX;
reg.r_cx=HotPointY;
reg.r_es=FP_SEG(&NewCurs);
reg.r_dx=FP_OFF(&NewCurs);
reg.r_ax=9; intr(0x33,&reg);

reg.r_ax=1; intr(0x33,&reg);	//.... 

int Xp = -1,Yp = -1;
while (!kbhit())				//...
{ reg.r_ax=3; intr(0x33,&reg); //...

gotoxy(1,1);
printf("x =%3d y =%3d", reg.r_cx, reg.r_dx); //...

if (reg.r_bx == 0) //
{  printf("								 ");
}
else if( reg.r_bx == 1 )
{
printf("  ... .... ... .......		 ");
setcolor(RED);
reg.r_ax=2; intr(0x33,&reg); // . . .
line(Xp, Yp, reg.r_cx, reg.r_dx);
reg.r_ax=1; intr(0x33,&reg);  // ...
}
else if( reg.r_bx == 2 )
{
printf(" .... .... .... ....		");
setcolor(GREEN);
circle(reg.r_cx,reg.r_dx,3);
}
else if( reg.r_bx == 3 )
{
printf(" ..... .... .... .... ....	");
reg.r_ax=2; intr(0x33,&reg);  // ...
;  // ...
reg.r_ax=1; intr(0x33,&reg);  // ...
}
else printf("  UnKnown buttons combination...%d ",reg.r_bx);

Xp = reg.r_cx;
Yp = reg.r_dx;
}//while
closegraph();
}

Эту программу тоже.

#include <graphics.h> // initgraph(), ...
#include <conio.h>	 // getch(), kbhit(), gotoxy()
#include <stdio.h>	 // printf()
#include <dos.h>	  // intr()
#include <bios.h>	 // bioskey()

#define KB_ESC		0x011B
#define KB_ENTER	 0x1C0D
#define KB_HOME	  0x4700
#define KB_END		0x4F00
#define KB_BS		 0x0E08
#define KB_TAB		0x0F09
#define KB_PLUS	  0x4E2B
#define KB_MINUS	 0x4A2D
#define KB_UPARROW	0x4800
#define KB_LEFTARROW 0x4B00
#define KB_RIGHTARROW 0x4D00
#define KB_DOWNARROW 0x5000

void main()
{
struct REGPACK reg;
int gdriver = DETECT, gmode, errorcode;
initgraph(&gdriver, &gmode, "G:\\PROGRAMS\\BC31\\BGI");

reg.r_ax=0; intr(0x33,&reg); 
if (reg.r_ax == 0)		  
{ printf("............! Press any key to exit...");
getch(); return; }
else
{ printf("............ %d .... ....!", reg.r_bx);
getch(); }

int FontSize=1;
while( 1 ) 
{ 
int CharWidth =textwidth ("_"); // ...
int CharHeight=textheight("│"); // ...

reg.r_ax=3; intr(0x33,&reg);

if( bioskey(1) ) 
{
int key = bioskey(0);

if( key == KB_ESC ){ break;	 }
else if(key == KB_LEFTARROW )
{ reg.r_cx-=CharWidth;
reg.r_ax=4; intr(0x33,&reg);}
else if(key == KB_RIGHTARROW)
{ reg.r_cx+=CharWidth;
reg.r_ax=4; intr(0x33,&reg);}
else if(key == KB_UPARROW)
{ reg.r_dx-=CharHeight; 
reg.r_ax=4; intr(0x33,&reg);}
else if(key == KB_DOWNARROW)
{ reg.r_dx+=CharHeight; 
reg.r_ax=4; intr(0x33,&reg);}
else if(key == KB_HOME)
{ reg.r_cx = reg.r_dx = 0;
reg.r_ax=4; intr(0x33,&reg);}
else if(key == KB_END)
{ reg.r_cx = getmaxx() -CharWidth;
reg.r_dx = getmaxy() -CharHeight;
reg.r_ax =4; intr(0x33,&reg); }
else if(key == KB_ENTER)
{ reg.r_cx = 0;	reg.r_dx+=CharHeight;
reg.r_ax =4; intr(0x33,&reg);}
else if(key == KB_PLUS)
{ if(FontSize<3) 
settextstyle(0,HORIZ_DIR,++FontSize);}
else if(key == KB_MINUS)
{ if(FontSize>0) 
settextstyle(0,HORIZ_DIR,--FontSize);}
else {
reg.r_ax=2; intr(0x33,&reg); 
char* s = "*"; s[0]=(char)key; outtextxy(Xp, Yp, s);
reg.r_cx += CharWidth; 
reg.r_ax=4; intr(0x33,&reg);
reg.r_ax=1; intr(0x33,&reg);  // ...
}
} //if(bioskey(1))
} //while
closegraph();
}

 

[Whatka]

ты сам то хоть пытался?
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