Move picture inside of the picture control

[Joe_H]

All,

What I have been tasked to do is to use a picture control to display a picture and be able to zoom in and out of the picture. this works great. What I would like to be able to do is click and hold down the mouse and while the mouse is down move the picture with the coords of the mouse.

like this.

click and and hold.

mouse moves left then the picture moves to the left.

Any suggestions are appreciated.

thanks in advance

[falkpl]

The IMAQ picture control does this all.  You might need some vision package to use it?

[Joe_H]

I would rather stick to the built in pic control. I am not going to buy the vision set just for this.

[Ben]

Hi Joe,

I can't point you at a complete solution but the "CC and Friends" thread has cod ethat will let you figure out where in the picture the mouse is and where the user clicked.

That will at leats give you a head-start on this challenge.

If that helps and you find the opertunity, please post back showing how you completed this task. We could use an exaple that shows how to do this.

I hope this helps,

Ben

[Joe_H]

Thanks Ben,

I have looked at that post a lot today and still cannot come up with the solution. I even tried to open some of your VI's but I could not open them because it kept asking for a folder called for Ben.

I will keep working on it.

thanks

[Ben]

All of the file should be there except the one CC mentioned and that VI can be found in a latter post.

Ben

[Joe_H]

I will dig around some more on Monday

[falkpl]

My suggestion was only if you already had IMAQ.  You can do what you want with dynamic mouse event registration.

\On mouse down register for mouse move, on mouse up unregister for mouse move.  In the mous move (now is a grab event since it is dynamically registered) move the image center by the difference (X, Y) noted by the mouse move event, than redraw with the new translation accounted for.

Paul

[tst]

Try this VI, soon to be part of the CCT. Note that it expects a boolean stop event reference.

[Joe_H]

NICE work tst. How did you create the stop reference. I have seen this done before but I do not know how to create things like this.

Thank you for the VI. I will try it out soon.