lmenu.cpp

ldraw_DOS游戏开发包

#include <lutils.h>
#include <lkey.h>
TMenu::TMenu(short max)
{ form=0; result=0; num=0; win[0]=win[1]=0; win[2]=win[3]=100;
  color[0]=10; color[1]=255; dy=20;
  list=new char*[max];
}
TMenu::~TMenu() { delete list; }
short TMenu::choice()
{ short i,j=0,c,done=0,key=0;
  lActiveSurface(NULL);
  while (!done)
   { for (i=0,j=win[1]+8;i<num;i++,j+=dy) { c=color[0]; 
         if (result==i) c=color[1];
         lsetColor(c); louttextxy(win[0],j,list[i]);
     }
     key=0; while (lkbhit());
     while (!key) { 
       if (lKeyOn(KEY_UP)) key=1; if (lKeyOn(KEY_DOWN)) key=2;
       if (lKeyOn(KEY_ENTER)||lKeyOn(KEY_SPACE)||lKeyOn(KEY_CTRL)) key=3;
     } 
     switch (key)
      { case 1: if (--result<0) result=num-1; break;
        case 2: if (++result>=num) result=0; break;
        case 3: done=1; break;
      }
   }
  lActiveSurface(NULL);
  return 1;
}