With the help of the mouse click to return the coordinates of the image.

Okay, so I tried to find a way to do it, and it seems very complicated for something that sounds really simple.

Anyway. I have a camera that updates an object image on the front panel using a while loop. I have another image object that is updated with a still image when you press the button "snap." Now what I want to do is to click on a point in the image that are broken and have the VI to return the coordinates of this pixel as part of coordinated image.

What I have so far is a structure of event in the while loop with the following to happen where "image object-> the mouse down:

Server reference (reference to the image object)-> property (last position of the mouse)-> output coordinated screen node.

I have two errors that don't make much sense to me (I have not worked with before event structures): ' event data node contains terminal unwired or bad "and"structure of the event one or several cases of event have no defined event. " This second shot seems odd because I don't actually want nothing to take if there is no click of a mouse. The first seems to refer to the box of the element on the left side of the structure of the event.

Above is my last attmpt to the trouble of sorting and as far as I can see it should work. whatever about the errors, I even take the right approach with that? I would have thought cordinates image would be quite common but seek advice here, it does not seem...

A bit puzzled here. Any help is very appreciated.

Hello RoBoTzRaWsUm,

I took a glance at your VI, who took a correct approach to the data you are looking for.  As you structure to aid and the event, you should look for an event to occur.  When you use a property node, you try to read an attribute of a control.  However, in a Structure of the event, I think you should use a node to invoke.  Allows a node to invoke your read an event or write a method with the control class in LabVIEW.

1. place down and call the node in the Palette of functions in "Programming"-> "Application Control".

2 wire your reference Image control to this

3. click on the method, and then select 'get a last event. "

4. right click on "Events that" and "create Constant.  Do the constant '1' in the table

5. read the Cluster "Contact information" from the left side of the case of the event by clicking and "create indicator.

You will find a piece of code attached example.

Concerning

Tags: NI Software

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