C programm Examples

C Program to check if mouse support is available or not

#include
#include

int initmouse();

union REGS i, o;

main()
{
   int status;

   status = initmouse();

   if ( status == 0 )
      printf("Mouse support not available.\n");
   else
      printf("Mouse support available.\n");

   getch();
   return 0;
}

int initmouse()
{
   i.x.ax = 0;
   int86(0X33,&i,&o);
   return ( o.x.ax );
}

C Program to display mouse pointer in textmode

#include
#include

int initmouse();
void showmouseptr();

union REGS i, o;

main()
{
   int status;

   status = initmouse();

   if ( status == 0 )
      printf("Mouse support not available.\n");
   else
      showmouseptr();

   getch();
   return 0;
}

int initmouse()
{
   i.x.ax = 0;
   int86(0X33,&i,&o);
   return ( o.x.ax );
}

void showmouseptr()
{
   i.x.ax = 1;
   int86(0X33,&i,&o);
}

C Program to display mouse pointer in graphics mode

#include
#include
#include

int initmouse();
void showmouseptr();

union REGS i, o;

main()
{
   int status, gd = DETECT, gm;

   initgraph(&gd,&gm,"C:\\TC\\BGI");

   status = initmouse();

   if ( status == 0 )
      printf("Mouse support not available.\n");
   else
      showmouseptr();

   getch();
   return 0;
}

int initmouse()
{
   i.x.ax = 0;
   int86(0X33,&i,&o);
   return ( o.x.ax );
}

void showmouseptr()
{
   i.x.ax = 1;
   int86(0X33,&i,&o);
}

C Program to hide mouse pointer

#include
#include
#include

int initmouse();
void showmouseptr();
void hidemouseptr();

union REGS i, o;

main()
{
   int status, count = 1, gd = DETECT, gm;

   initgraph(&gd,&gm,"C:\\TC\\BGI");

   status = initmouse();

   if ( status == 0 )
      printf("Mouse support not available.\n");
   else
   {
      showmouseptr();

      while(count

C Program to get current position of mouse pointer

#include
#include
#include
#include

int initmouse();
void showmouseptr();
void hidemouseptr();
void getmousepos(int*,int*,int*);

union REGS i, o;

main()
{
   int gd = DETECT, gm, status, button, x, y, tempx, tempy;
   char array[50];

   initgraph(&gd,&gm,"C:\\TC\\BGI");
   settextstyle(DEFAULT_FONT,0,2);

   status = initmouse();

   if ( status == 0 )
      printf("Mouse support not available.\n");
   else
   {
      showmouseptr();

      getmousepos(&button,&x,&y);

      tempx = x;
      tempy = y;

      while(!kbhit())
      {
         getmousepos(&button,&x,&y);

         if( x == tempx && y == tempy )
         {}
         else
         {
            cleardevice();
            sprintf(array,"X = %d, Y = %d",x,y);
            outtext(array);
            tempx = x;
            tempy = y;
         }
      }
   }

   getch();
   return 0;
}

int initmouse()
{
   i.x.ax = 0;
   int86(0X33,&i,&o);
   return ( o.x.ax );
}

void showmouseptr()
{
   i.x.ax = 1;
   int86(0X33,&i,&o);
}

void getmousepos(int *button, int *x, int *y)
{
   i.x.ax = 3;
   int86(0X33,&i,&o);

   *button = o.x.bx;
   *x = o.x.cx;
   *y = o.x.dx;
}

C program to determine which mouse button is clicked

#include
#include
#include

union REGS i, o;

int initmouse()
{
   i.x.ax = 0;
   int86(0X33,&i,&o);
   return ( o.x.ax );
}

void showmouseptr()
{
   i.x.ax = 1;
   int86(0X33,&i,&o);
}

void getmousepos(int *button, int *x, int *y)
{
   i.x.ax = 3;
   int86(0X33,&i,&o);

   *button = o.x.bx;
   *x = o.x.cx;
   *y = o.x.dx;
}

main()
{
   int gd = DETECT, gm, status, button, x, y;
   char array[50];

   initgraph(&gd,&gm,"C:\\TC\\BGI");
   settextstyle(DEFAULT_FONT,0,2);

   status = initmouse();

   if ( status == 0 )
      printf("Mouse support not available.\n");
   else
   {
      showmouseptr();

      getmousepos(&button,&x,&y);

      while(!kbhit())
      {
         getmousepos(&button,&x,&y);

         if( button == 1 )
         {
            button = -1;
            cleardevice();
            sprintf(array,"Left Button clicked x = %d y = %d",x,y);
            outtext(array);
         }
         else if( button == 2 )
         {
            button = -1;
            cleardevice();
            sprintf(array,"Right Button clicked x = %d y = %d",x,y);
            outtext(array);
         }

      }
   }

   getch();
   return 0;
}

C program to restrict mouse pointer

#include
#include
#include

int initmouse();
void showmouseptr();
void hidemouseptr();
void restrictmouseptr(int, int, int, int);

union REGS i, o;

main()
{
   int status, gd = DETECT, gm;

   initgraph(&gd,&gm,"C:\\TC\\BGI");
   settextstyle(DEFAULT_FONT,0,2);

   status = initmouse();

   if ( status == 0 )
      outtext("Mouse support not available.\n");
   else
   {
      showmouseptr();
      rectangle(120,70,520,410);
      restrictmouseptr(120,70,520,410);
   }

   getch();
   return 0;
}

int initmouse()
{
   i.x.ax = 0;
   int86(0X33,&i,&o);
   return ( o.x.ax );
}

void showmouseptr()
{
   i.x.ax = 1;
   int86(0X33,&i,&o);
}

void restrictmouseptr(int x1, int y1, int x2, int y2)
{
   i.x.ax = 7;
   i.x.cx = x1;
   i.x.dx = x2;
   int86(0X33,&i,&o);

   i.x.ax = 8;
   i.x.cx = y1;
   i.x.dx = y2;
   int86(0X33,&i,&o);
}

C program to restrict mouse pointer in a circle

#include
#include
#include
#include
#include

union REGS i, o;

int initmouse()
{
   i.x.ax = 0;
   int86(0X33, &i, &o);
   return ( o.x.ax );
}

void showmouseptr()
{
   i.x.ax = 1;
   int86(0X33, &i, &o);
}

void hidemopuseptr()
{
   i.x.ax = 2;
   int86(0X33,&i,&o);
}

void getmousepos(int *x, int *y)
{
   i.x.ax = 3;
   int86(0X33, &i, &o);
   *x = o.x.cx;
   *y = o.x.dx;

}

void movemouseptr(int x, int y)
{
   i.x.ax = 4;
   i.x.cx = x;
   i.x.dx = y;
   int86(0X33, &i, &o);
}

main()
{
   int gd = DETECT, gm, midx, midy, radius, x, y, tempx, tempy;

   radius = 100;

   initgraph(&gd, &gm, "C:\\TC\\BGI");

   if(!initmouse())
   {
      closegraph();
      exit(1);
   }

   midx = getmaxx()/2;
   midy = getmaxy()/2;

   showmouseptr();
   movemouseptr(midx, midy);
   circle(midx, midy, radius);

   x = tempx = midx;
   y = tempy = midy;

   while(!kbhit())
   {
      getmousepos(&x, &y);

      if((pow(x-midx,2)+pow(y-midy,2)-pow(radius,2))>0)
      {
         movemouseptr(tempx, tempy);
         x = tempx;
         y = tempy;
      }

      tempx = x;
      tempy = y;
   }

   closegraph();
   return 0;
}