TmSgiThumbWheel(3Tm)					  TmSgiThumbWheel(3Tm)

NAME    [Toc]    [Back]

     TmThumbWheel - the	SGI sgThumbWheel widget	class

SYNOPSIS    [Toc]    [Back]

     sgiThumbWheel  pathName [options]

DESCRIPTION    [Toc]    [Back]

     This is the tcl binding to	the SGI	ThumbWheel widget.

CLASSES    [Toc]    [Back]

     The class name for	resource files is sgThumbWheel.	Resources are
     inherited from TmPrimitive, TmCore. Methods are inherited from TmCore.

RESOURCES    [Toc]    [Back]

     New resources for this class are:

	  homePosition
	  maximum
	  minimum
	  angleRange
	  unitsPerRotation
	  orientation
	  showHomeButton
	  value
	  valueChangedCallback
	  dragCallback


     homePosition
	  Specifies the	"known value" to which the thumb wheel's value is set
	  when the home	button is clicked.


     maximum
	  Specifies the	thumb wheel's maximum value.  maximum must be greater
	  than or equal	to minimum. Setting maximum equal to minimum indicates
	  an infinite range.


     minimum
	  Specifies the	thumb wheel's minimum value.  maximum must be greater
	  than or equal	to minimum. Setting maximum equal to minimum indicates
	  an infinite range.


     angleRange
	  Specifies the	angular	range, in degrees, through which the thumb
	  wheel	is allowed to rotate.  This, in	conjunction with maximum and
	  minimum, controls the	fineness or coarseness of the wheel control



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TmSgiThumbWheel(3Tm)					  TmSgiThumbWheel(3Tm)



	  when it is not infinite.  If set to zero, the	thumb wheel has	an
	  infinite range.

	  The default of 150 represents	roughly	the visible amount of the
	  wheel.  Thus clicking	at one end of the wheel	and dragging the mouse
	  to the other end would give roughly the entire range from minimum to
	  maximum.


     unitsPerRotation
	  Specifies the	change in value	when the wheel is rotated one full
	  turn around.	This controls the fineness or coarseness of the	wheel
	  control when the range is infinite.


     orientation
	  Displays ThumbWheel vertically or horizontally.  This	resource can
	  have values of vertical and horizontal.


     showHomeButton
	  Specifies whether a home button should be displayed next to the
	  slider.  If the value	is True, the home button is displayed.


     value
	  Specifies the	current	position of the	thumb wheel, between minimum
	  and maximum if the thumb wheel is not	infinite.


     valueChangedCallback
	  Specifies the	list of	callbacks that is called when the value	of the
	  thumb	wheel has changed.  The	reason sent by the callback is
	  value_changed.


     dragCallback
	  Specifies the	list of	callbacks that is called when the wheel
	  position changes as the wheel	is being spun.	The reason sent	by the
	  callback is drag.

EXPANSIONS    [Toc]    [Back]

     The %value	is expanded into an integer between minimum and	maximum	when
     not infinite.


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