Position of a tab in a tab control.

[Peter M. Brigham, MD]

If using Mark's custom tab control doesn't work for you, here's a kludgy work-around. It requires a hidden field "hiddenTestFld" with margins set to 6.

on positionControl btnName, tabNbr
   -- btnName is the name of your tab button
   put the formattedwidth of btn btnName into bWidth
   put the formattedheight of btn btnName into bHeight
   put item 1 of the loc of btn btnName into bCenter
   put bWidth div 2 into halfWidth
   put bCenter - halfWidth into bLeft
   put bCenter + halfWidth into bRight
   put the top of btn btnName into bTop
   set the textfont of fld "hiddenTestFld" to the textfont of btn btnName
   set the textsize of fld "hiddenTestFld" to the textsize of btn btnName
   put 0 into divisions
   repeat with n = 1 to the number of lines of btn btnName
      put line n of btn btnName into tabName
      put tabName into fld "hiddenTestFld"
      put (the formattedwidth of fld "hiddenTestFld") into tWidth
      put (item n of divisions) + tWidth into item n+1 of divisions
   end repeat
   put (item tabNbr of divisions) + bLeft into tabLeft
   put (item tabNbr+1 of divisions) + bLeft into tabRight
   put tabLeft + ((tabRight - tabLeft) div 2) into tabCenter
   set the loc of btn "floatingControl" to tabCenter,bHeight+24
end positionControl

The result in placing the control (in this case btn "floatingControl") below the correct tab is not quite exact, for reasons I haven't gotten to the bottom of, but you could fiddle with it a bit.

HTH,
-- Peter

Peter M. Brigham
pmbrig at gmail.com
http://home.comcast.net/~pmbrig


On Apr 20, 2012, at 5:35 AM, Paul Hibbert wrote:

> Pete,
> 
> I may be wrong, but I don't think there's a way to control the differences between the two platforms without rolling your own tab control.
> 
> However, Mark Schonewille has done much of the work and made his custom tab control available through RevOnline, just search for "custom tab" and you should find it, or the web hosted version is here…
> 
> http://revonline2.runrev.com/stack/258/Custom-Tab-Button
> 
> You should be able to adapt it (or copy the principles) to suit your needs.
> 
> Paul
> 
> On 20 Apr 2012, at 04:19, Peter Haworth wrote:
> 
>> Is there a way to get hold of the coordinates of the label of the currently
>> selected tab of a tab control?
>> 
>> I have a control that I want to position immediately below the label of the
>> current tab of a tab control.  I tried doing this by trial and error,
>> adding a number of pixels to the left of the control to position it
>> correctly.  This was all on a Mac and as soon as I tried it on a Windows
>> machine, the control is not positioned correctly, and I suspect it would be
>> affected by different screen resolutions also.
>> 
>> Pete
>> lcSQL Software <http://www.lcsql.com>
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