线程里面当前状态变换后一定要将当前状态给之前状态

线程里面进行变量的变换，定时器中也进行访问时候，线程里面

线程里面的开关量，利用完毕，一定要立即改变值，因为线程的优先级高

一、目的

1、问题：线程里面if判断条件里面当前状态和上次状态有变化后，大括号中如果没有立即将当前状态给上一次状态，大括号里面就可能会执行很多次

 

二、参考

1、

 

三、操作

1、

• 总结：因为线程里面的优先级比较高，如果不立即将if里面当前状态给之前状态，大括号里面可能就会执行多次

	if (pThis->m_tUsb5538.byDISts[pThis->m_tUsb5538.iChannel_in_youBeng_qiDong_btn]==pThis->m_tUsb5538.in_value
			&&pThis->m_tUsb5538.byDISts_last[pThis->m_tUsb5538.iChannel_in_youBeng_qiDong_btn]==(pThis->m_tUsb5538.in_value+1)%2	)
		{
			if (pThis->m_tUsb5538.byDISts[pThis->m_tUsb5538.iChannel_in_shiNei_stop_btn]==(pThis->m_tUsb5538.in_value+1)%2		
				&&pThis->m_tUsb5538.byDISts[pThis->m_tUsb5538.iChannel_in_youBeng_run]==(pThis->m_tUsb5538.in_value+1)%2		)
			{
				//按下设备间的油泵启动启动按钮&&室内急停按钮是松开状态&&油泵没有运行输入
				pThis->m_tUsb5538.byDISts_last[pThis->m_tUsb5538.iChannel_in_youBeng_qiDong_btn]=pThis->m_tUsb5538.byDISts[pThis->m_tUsb5538.iChannel_in_youBeng_qiDong_btn];
				pThis->m_tUsb5538.byDISts_last[pThis->m_tUsb5538.iChannel_in_shiNei_stop_btn]=pThis->m_tUsb5538.byDISts[pThis->m_tUsb5538.iChannel_in_shiNei_stop_btn];
				pThis->m_tUsb5538.byDISts_last[pThis->m_tUsb5538.iChannel_in_youBeng_run]=pThis->m_tUsb5538.byDISts[pThis->m_tUsb5538.iChannel_in_youBeng_run];

				::PostMessage(pThis->m_hWnd,WM_KEYUP,VK_NUMPAD0,NULL);					
			}
		}