PureBasic Forums - English

Posted: **Fri Jan 09, 2004 12:29 pm**

Balance can range can be from -100 to 100 (-100 is full right, 0 is middle (normal mode) and 100 is full left).

Trackbar range from 0 - 10000

how do i get

TRACKBAR..

0---------------100-------------200
............................................^ Trackbar =100 in this positon
......................^ Trackbar =0 in this positon
^Trackbar =-100 in this positon

Posted: **Fri Jan 09, 2004 12:39 pm**

Trackbar range from 0 - 10000

how do i get

TRACKBAR..

0---------------100-------------200

Using the famous three-rule.

Posted: **Fri Jan 09, 2004 12:47 pm**

Is this what you're asking?

Code: Select all


..
TrackBarGadget(#TrakGadget, xPos, yPos, wide, High,  1, 200) 
..

repeat
  EventID = WaitWindowEvent()
  Select EventID
   Case #PB_EventGadget
      Select EventGadgetID()
         Case #TrakGadget
           result = 100 - GetGadgetState(#Gadget)
           if result < 0
              .. do lefter stuff
           elseif result > 0
              .. righter stuff
           else
              .. do zerostuff
           endif
      EndSelect
   EndSelect
until eventID = #PB_EventCloseWindow

Or did I miss the point completely?

[EDIT]
Famous three rule?

Posted: **Fri Jan 09, 2004 12:56 pm**

@Bong-Mong:
'how do.' in the topic says nothing. Would be kind of you if you
use a topic that says something about the contents, next time.

Thanks in advance!

(Topic edited)

Posted: **Fri Jan 09, 2004 1:56 pm**

i wanna use trackbar for audio balance control, but range is out

Posted: **Fri Jan 09, 2004 3:22 pm**

Bong-Mong.

If trackbar understands range 0 to 10000 and you want to get -100 to 100, then you must to multiply by (2/100) what you get from trackbar position, and then substract 100 to the result.

What Danilo says is about to try to write a descriptive title for new TOPICS in the Forum. For example for this should be good: "How to get trackbar position relative...", because in that way it is easy to search and look a nice Forum

Posted: **Fri Jan 09, 2004 4:15 pm**

@Dare2,

Actually, shouldn't the math be:

Code: Select all

result = GetGadgetState(#Gadget) - 100

That way, the max trackbar value of 200 gives 100, 100 gives 0 , and 0 gives -100.

Eric

Posted: **Fri Jan 09, 2004 4:44 pm**

Heya ebs,

I think you're right!

In fact I know you are.

Too much of my coding life at the mo is spent fixing *citcelsyd* code like the above, eg, a > b instead of a < b

Posted: **Sat Jan 10, 2004 8:15 pm**

your boys/girls are good man.. thanks once again

PureBasic Forums - English

Trackbar range question

Trackbar range question