【emwin】使用键盘数据发送函数的注意事项

@2018-08-08

小记

　　键盘实现时，在发送键值时， 函数 GUI_SendKeyMsg(GUI_KEY_BACKSPACE, Pressed) 的参数 Pressed 在按键按下状态的 case 语句后无 break，此方法参考至官方的模拟器中的键盘实例，加上 break 会导致键盘无响应结果

case ID_BUTTON_13: // Notifications sent by '<- -Button'
      switch(NCode) {
      case WM_NOTIFICATION_CLICKED:
        // USER START (Optionally insert code for reacting on notification message)
      
        Pressed = 1;
      
        // USER END
      case WM_NOTIFICATION_RELEASED:
        // USER START (Optionally insert code for reacting on notification message)
      
        GUI_SendKeyMsg(GUI_KEY_BACKSPACE, Pressed);
      
        // USER END
        break;
      // USER START (Optionally insert additional code for further notification handling)
      // USER END
      }
      break;