如何在角度主机侦听器中使用键盘组合键

Question

当用户按下 ALT+M 然后 ALT+E 键时，我想要显示垫对话框模式。

Answer 1

According to your question to capture ALT+M and ALT+E

    @HostListener('window:keydown.Alt.m', ['$event']) 
    onKeyDownAltM(e) {
      e.preventDefault();
      console.log(e);    
       console.log('ALT + M');
   }
   @HostListener('window:keydown.Alt.e', ['$event']) 
    onKeyDownAltE(e) {
      e.preventDefault();
      console.log(e);    
       console.log('ALT + E');
   }

That's it you are good to go!
For Key Codes Reference
Stack Blitz working example Link