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SNAP style for trackbar

 
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FreezingFire
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PostPosted: Sun May 08, 2005 4:45 pm    Post subject: SNAP style for trackbar Reply with quote

I would like to see a SNAP style for the trackbar element -- this would allow
the slider to 'snap' to the marks, instead of going pixel by pixel.

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jules
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PostPosted: Mon May 09, 2005 8:32 am    Post subject: Reply with quote

You can do this in the trackbar CLICK event:

Code:
:trackbar1click
  dialog set,trackbar1,@prod(@div(@sum(@dlgtext(trackbar1),10),20),20)
  goto loop


The tick interval is 20 in the above example.

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FreezingFire
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PostPosted: Mon May 09, 2005 7:22 pm    Post subject: Reply with quote

True, but it would be nice if it snapped to the lines while your were
dragging it. Smile I don't know how possible it is for you to just add it in,
or how much work it would be, but if it's not much, I think it would
be a welcomed feature by everyone.

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jules
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PostPosted: Tue May 10, 2005 7:30 am    Post subject: Reply with quote

It's not a native feature of the trackbar control, as far as I am aware.

I think the issue occurs because VDS implements the control with a range of 0 to 100, so the resolution is 1. If it had a maximum value of 10 then I guess it would snap to each of the 10 valid positions.

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FreezingFire
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PostPosted: Thu May 12, 2005 8:01 pm    Post subject: Reply with quote

You're right Jules -- would it be possible to control the range of the trackbar?

I've attached a simple demo of what I'm talking about built in Delphi 6 Personal.



TrackbarDemo.exe
 Description:

Download
 Filename:  TrackbarDemo.exe
 Filesize:  373.5 KB
 Downloaded:  1004 Time(s)


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jules
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PostPosted: Fri May 13, 2005 8:45 am    Post subject: Reply with quote

It's possible, of course, but only by changing the definition of the trackbar to - I guess - something resembling the spin edit. So it would no longer be compatible with VDS 5. If it had been me who added the trackbar to VDS, that is probably how I would have done it. It seems to me a whole lot more useful to have it return the values you want, instead of returning the values 0 to 100 and forcing you to convert them.
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PostPosted: Mon May 16, 2005 9:17 am    Post subject: Reply with quote

How did you do this, FF? I can't find a property that makes the slider move in increments of more than 1.
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FreezingFire
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PostPosted: Mon May 16, 2005 8:44 pm    Post subject: Reply with quote

I'll attach the source for you to check it out. Smile
I also attached a screenshot of the object inspector when the trackbar
was selected.



obj_insp.png
 Description:
 Filesize:  12.33 KB
 Viewed:  1113 Time(s)

obj_insp.png



trackbar_src.zip
 Description:

Download
 Filename:  trackbar_src.zip
 Filesize:  1.48 KB
 Downloaded:  833 Time(s)


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jules
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PostPosted: Tue May 17, 2005 7:56 am    Post subject: Reply with quote

Ah. I see. The increment was still 1. The maximum was 5. I was looking for a property that would let the trackbar have, say, a range of 0 to 100 and a step size of 5 or 10.
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