Halting loops with a button press

[tugofwar]

I have an infinite loop getting and displaying data. How can I halt the loop with a button or keypress?

[menchar · Accepted solution]

Periodically perform a ProcessSystemEvents() call inside your loop. In a STOP button callback, set a flag to tell your loop to stop.

unsigned int stop = 0;

while (!stop) {

  getmeasured data

  display data

  ProcessSytemEvents()

  Sleep (250);   // to be polite:  it's rude to spinlock, since you'll hog the CPU and other threads can get starved

}

then, in the callback for a STOP button

// STOP button Callback routine

stop = 1;

[tugofwar]

Works. Thanks.

[menchar]

You're welcome.