[futurebasic] Re: [FB] pop-up bevel buttons in OS X

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From: Robert Purves <robert.purves@...>
Date: Mon, 30 Jun 2003 23:49:21 +1200
Steve Crossman wrote:

> 	Your suggestion below did not work.  When I click on the menu, I want 
> the last selected menu to be selected in the pop-up.  When I click on 
> the menu, nothing is selected.
>
>> How do I get a certain menu item to be selected when clicking on a 
>> bevel - menu or any pop-up menu for that matter?
>> If, for example, in a font size menu, 14 point size is the current 
>> size, how do I make it the selected automagically when click the 
>> pop-up menu. I always get the first item, or no item selected.
>>
>>>  Make your menu, then at some point after just set it to:
>>>
>>> Appearance button  _ Your PopBtnID,, desired
>>>
>>> I do mine after I have created it, and just before making the window 
>>> visible. You can probably do it when making it too.
>>>
>>> Ken (I do believe) showed me this trick for getting it to show up 
>>> more instantly (like when using a key filter) on certain occasions
>>>
>>> appearance button  -_YourPopBtnID,, desired
>>> appearance button  _ Your PopBtnID,, desired


A search in Apple's header files reveals helpful info in 
ControlDefinitions.h:

/*  NOTE:
Bevel buttons with menus actually have *two* values. The value of the
button (on/off), and the value of the menu.
*/


You need to set the value of the bevel button's menu with this function:

/*
  *  SetBevelButtonMenuValue()
  *
  *  Mac OS X threading:
  *    Not thread safe
  *
  *  Availability:
  *    Mac OS X:         in version 10.0 and later in Carbon.framework
  *    CarbonLib:        in CarbonLib 1.0 and later
  *    Non-Carbon CFM:   in AppearanceLib 1.0 and later
  */
extern OSErr
SetBevelButtonMenuValue(
   ControlRef   inButton,
   SInt16       inValue);


The FB translation is:

toolbox fn SetBevelButtonMenuValue( ControlRef inButton, SInt16 inValue 
) = OSErr

dim as OSErr  err
err = fn SetBevelButtonMenuValue( button&( _myBevelBtn ), whatEver )


Robert P.