Making a rotating knob in VB how to??

electron · Aug 20, 2004

I would like to make a Knob in VB that I can grab with the mouse pointer and rotate. Think should be started with only a line that could be rotated when grabed. I dont know but been reading about bitmaps and pixels and maybe this is the way to go. Is there an easier way to do it? I just want some general ideas.
Thanks

Rafael

johnwm · Aug 21, 2004

You don't have to re-invent the wheel (or knob either)! there are a number of ocx controls available either free or for a small charge. A quick google for 'knob ocx' will find several, including:

http://www.programmersheaven.com/zone15/cat228/index.htm

If you want to roll your own, start with a picturebox control and a line control in that box. Use the picturebox width and height values (divided by 2) to set the line x1 and x2 coordinates and the picturebox mouse events to set the line x2 and y2 coodinates

Good Luck
johnwm
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electron · Aug 25, 2004

THANKS JOHNWM I JUST WANTED TO GO TRU THE CHALLENGE BUT LIKE YOU SAID DONT HAVE TO RE-INVENT THE KNOB.

THANKS
RAFAEL

Rafael

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Making a rotating knob in VB how to??

electron

Electrical

johnwm

Computer

electron

Electrical

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