Associating Particular Keystrokes to a Slider Bar

[labuda]

Hi,

I need to associate keystrokes "1" and "3" to slide my sliderbar left and right. It cannot be any other keystrokes. Also, this should be independent of what else is going on in the program... so the sliderbar shouldn't have to be selected for this to work.

Any clue how i can do this?

Thanks

Aleks. 

[chilly_charly]

You could use an event structure and filter the key down events for char values 49 and 51 (ASCII codes for 1 and 3). This is demonstrated in the attached vi

[labuda]

Thanks for the VI,
I've implemented it, and it works fine.
The only problem is when I'm running other while loops for timing stuff, the slider bar doesn't respond to every keystroke, and labview slows down a lot. This might be my computer, but do you think there would be another way of implementing it for it not to interfere with timing processes? I'll try adding a 1ms wait in the while loop tomorrow and see if it makes a difference.
Thanks again
Aleks.

[chilly_charly]

If you are using a single event structure, then you should not have such a problem. A wait instruction in the loop will not change anything : the loop is not running at all, unless you press a key on the keyboard, or click on the stop button. It just waits forever.

Message Edité par chilly charly le 05-11-2006 12:29 PM