new.cpp

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#include <iostream.h>
#include <windows.h>  
#include <Conio.h>
void main()
{ 
   cout<<"键盘组合键演示"<<endl;
   cout<<"ALT-A：屏幕显示AAAA"<<endl;
   cout<<"ALT-B：屏幕显示BBBB"<<endl;
   cout<<"ALT-C：屏幕显示CCCC"<<endl;
   cout<<"ALT-D：屏幕显示DDDD"<<endl;
   while(!_kbhit()){};
   char keych=_getch();
    if(GetKeyState(VK_MENU)&0x80)
	if(GetKeyState(VK_MENU)<0)
	{
		switch(keych)
		{
		case 'A': 
			cout<<"AAAA";break;
		case 'B':
			cout<<"BBBB";break;
		case 'C':
			cout<<"CCCC";break;
		case 'D':
			cout<<"DDDD";break;
		default:
			exit(1);
			break;
		}       
	}
    
}