DAY 016: _MOUSEINPUT

[SMcNeill]

Can someone verify if I understand this line correctly?   The overall routine makes sense but this particular line was interesting.

Code: (Select All)

If mb And Not oldmb then

I'm not used to this exact phrasing...but I believe it means literally that if mb is true and not equal to oldmb?   In other words if mb <> oldmb ?   Sorry for the sidetracking question

This is basically the same as:

IF mb <> 0 AND NOT oldmb <> 0 THEN...

If YourButtonIsDownNow AND YourButtonWasNOTdownPreviously THEN....


It's not quite the same as mb <> oldmb.  For example:  

mb = 0, oldmb = -1 -- Your mouse button is now up, but it was down last loop....  Is it a click this loop??

See the difference in the two?

You're basically checking: IF mb = -1 AND oldmb = 0 THEN...