Hello All, I am programming in Labview from two months... starter... I a want to use a event structure in my case, So I started with examples and had a problem understanding one. This is the example I am talking about labview\examples\general\dynamicevents.llb\dynamicallr register for events.vi 1) In the blockdiagram , outside while loop , can you please explain the three inputs given to the thrre propertis under Register event property node ??? 2) Why to use shift registers for sending the Register events into while loop ? Why dosent a tunnel works in this case ? 3) Inside the event event strucure why we have again include 'Register event' property node and how to give reference to its properties ? 4) In the while loop, event case 1 Mouse down event , mouse down property is left free, but mouse move was connected to sone refernce, how does this works ??? I would be glad if can refer me some literature about his event structures Thank you Regards Neo

@Neo6 wrote: 1)At the very begining, when I hit the run, what all the events available for the event structure in the while loop ? (If I understand correctly, all the events associated with front pannel controls and mouse move are available since they are registered outside the loop . Am I correct ????) Technically, all of the events are available. It is just a matter of what objects will cause the events. Initially, the Mouse Move event is registered to a NULL VI. Since there isn't one of those around, the event won't happen. The Mouse Up and Mouse Down were associated with all of the controls on the front panel. So if the mouse went up or down on a control, the event would fire. Neo6 wrote: 2)Along with all the pannelcontrol events, there is also one mouse move event is already registered outside the while loop and sent to the event structure, but again inthe 'Mouse down' event we are again registering the 'mouse move' event and storing in shift register. What is the difference between registering outside while loop and Registering inside the 'mouse down' event structure ? If registering inside a event structure is updating the already existing event or is it filling the empty position for the Event structure ???? We are simply updating what object can cause the event. Inside of the Mouse Down event, we say that the current VI can cause a Mouse Move event.

LabVIEW

Basic event structure example- Help

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Hi Crossrulz,

Crystal clear, Thank for answering my questions so patiently....... I tried executing the VI by replacing the null VI reference with original VI reference... I understood my mistake

Double Kudos

Regards

Neo

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LabVIEW

Basic event structure example- Help

Re: Basic event structure example- Help