下拉菜单与图书源程序SCME.C

/**** SCME.C + S_BOOK4.C ***************/
 #include <stdio.h>
 #include <bios.h>
 #define UPPER     (72+256)
 #define LEFT      (75+256)
 #define RIGHT     (77+256)
 #define DOWN      (80+256)
 #define ENTER     13
 #define ESC       27

 #include <stdlib.h>
 struct node
  {  char name[10];
     int price;
     char pub[15];
  };
 struct node *head=NULL;

 int Hj=20,Mm=0,Smm[5],SbNum[5]={5,6,2,4,6};/*子菜单的个数*/
 int SbWid[5]={10,10,10,10,10};
 int SbX[5]={5,15,25,35,45};
 int Key=0;
 char buf[1000];   /*用于保存屏幕的存储区*/
 char *edithelp = " Move Cursor: Left,Right,Up,Down,PgUp,PgDn  |  Alt+c-Copy,Alt+y-Cut Alt+p-Paste";
 char *mainhelp = "  F1-Save   F2-Open   F3-Search   F4-Replace   F5-Undo   F6-Redo   ESC-Menu";
 char *Main[5]={"File","Edit","Search","Option","book"};
 char *Sub[5][6]={
   { "New","Open","Save","Save as","Exit"},
   { "Cut ","Copy","Paste","Del","Select All","Edit"},
   { "Find ","Replace"},
   { "Undo  ","Redo","Config","Help"},
   { "add","list","search","del","save","load"}
 };

 void main( )
 {
 InitScreen(); /*初始化屏幕*/
 WMainMenu();  /*显示主菜单*/
 WSubMenu();   /*显示子菜单*/
 SelectMenu(); /*根据用户按键,处理相事务*/
 Quit();          /*恢复屏幕*/
 }

 void  disp_menu_item(int x,int y,int fcolor,int bcolor,char *string)
    {   textbackground(bcolor);
        textcolor(fcolor);
        gotoxy(x,y);
        cputs(string);        /*显示字符串*/
    }

 WMainMenu(void)
 {
   int i;
   window(1,1,80,25);
   textattr(0x3e);

   for(i=0;i<5;i++)
   {
     gotoxy(SbX[i],1);
     cputs(Main[i]);
   }

   gotoxy(SbX[Mm],1);
   textattr(0x4e);        /*同时设置前景和背景颜色*/
   cputs(Main[Mm]);       /*以上3句是设置默认选择File菜单*/
 }

 WSubMenu(void)
 {
   int i;
   gettext(SbX[Mm]-2,2,SbX[Mm]+SbWid[Mm]+1,SbNum[Mm]+4+1,buf);       /*保存和恢复屏幕区域*/
   Wind(SbX[Mm]-2,2+1,SbX[Mm]+SbWid[Mm],SbNum[Mm]+3+1,1,3,15);
   textattr(0x3f);
   clrscr();

   for(i=0;i<SbNum[Mm];i++)
   {
      gotoxy(2,1+i);
      cputs(Sub[Mm][i]);
   }

   textattr(0x1e);
   gotoxy(2,Smm[Mm]+1);
   cputs(Sub[Mm][Smm[Mm]]);       /*以上3句是设置默认选择File菜单下的Open*/
 }

 Quit(void)
 {
   textbackground(0);
   textcolor(7);
   window(1,1,80,25);
   clrscr();
 }

 int SubFunGo()
 {

   switch(Mm)
   {
      case 0:       /*file: new