Programming tips

• In a timer handler (function), we should set a flag to avoid function re-entering, for example:

bool bProcessing = false;

void onTimer()

{

if (bProcessing)

return;

bProcessing = true;

// handle something.

bProcessing = false;

}

• Usually only the outermost function need add try-catch block, inner functions don't need add try-catch block. But sometimes inner function also need try-catch block so that you can do some cleanup in catch block when the exception occurs in inner function.

• If you want to check where dead loop occurs, you can click "Break All" when debugging in VS.