Mouse position on picture

[Snamprogetti]

I'm using a picture control with mouse down/mouse move event detection. With the "Mouse" property of picture control i can tell the relative position of mouse cursor on picture. My problem is that the picture control has scrollbars, and even clicks/moves on the scrollbars fire the events! Is there a practical way to tell if mouse is on scrollbars or on real picture?

[TiTou]

Hi,

Here's a quick example that :

- tests the width of the vertical scrollbar for the picture control

- continuously checks if the mouse is in the zone of the vertical scrollbar

- lets you show / hide the vertical scrollbar

Hope this helps

it's in LV2010, let me know if you need and older version.

[zenthoef]

Is it possible for you to post this VI and then I can take a look at it?

[Snamprogetti]

Thank you, at the moment i have only LV 2009.

Sorry my app is not easy to post but to get the interesting part just place a picture control with visible toolbars, an event structure with a "mouse down" event, and you're there

[TiTou]

here you go with 2009.

[Snamprogetti]

Doesn't work when the image is scrolled horizontally; but i got the point, to "measure" the scrollbar you get picture size with scrollbar hidden and with scrollbar shown and then compute the difference

[TiTou]

Yes, I left it for you to do the horizontal check, just to make sure you understand it and also because I'm lazy

[Snamprogetti · Accepted solution]

Ok, i found a much simpler solution. You don't need to "measure" the toolbars; the DrawAreaSize property of pictures returns the drawable area excluding toolbars. The attached snippet checks if you're on the scrollbars

[Snamprogetti]

ERRATA CORRIGE: using ">" with a cluster and "compare aggregates" compares only the first element... here is a correct version.

Also, you may want to check that mouse is not on the frame or the caption, so i added a "> 0"

[dieterxu]

best solution