In the Timer control or a loop, judge a variable, if the variable is equal to a certain value, will pop up a MessageBox, the question is: how to let the MessageBox play only once? Instead of always pop up?
CodePudding user response:
The timer stops, before in the pop-up window to open the timer
CodePudding user response:
In a loop, pop-up before stop, pop-up start, in a MessageBox will be blocked?