XmArrowButtonGadget(library call) XmArrowButtonGadget(library call)
NAME
XmArrowButtonGadget -- The ArrowButtonGadget widget class
SYNOPSIS
#include <Xm/ArrowBG.h>
DESCRIPTION
ArrowButtonGadget consists of a directional arrow surrounded by a border shadow. When it is selected, the shadow changes to give the
appearance that the ArrowButtonGadget has been pressed in. When it is unselected, the shadow reverts to give the appearance that the button
is released, or out.
ArrowButtonGadget holds the XmQTactivatable trait.
Classes
ArrowButtonGadget inherits behavior, resources, and traits from the Object, RectObj, and XmGadget classes.
The class pointer is xmArrowButtonGadgetClass.
The class name is XmArrowButtonGadget.
New Resources
The following table defines a set of widget resources used by the programmer to specify data. The programmer can also set the resource val-
ues for the inherited classes to set attributes for this widget. To reference a resource by name or by class in a .Xdefaults file, remove
the XmN or XmC prefix and use the remaining letters. To specify one of the defined values for a resource in a .Xdefaults file, remove the
Xm prefix and use the remaining letters (in either lowercase or uppercase, but include any underscores between words). The codes in the
access column indicate if the given resource can be set at creation time (C), set by using XtSetValues (S), retrieved by using XtGetValues
(G), or is not applicable (N/A).
+-------------------------------------------------------------------------------------------+
| | XmArrowButtonGadget Resource Set | | |
|Name | Class | Type | Default | Access |
+-------------------------+--------------------------+----------------+------------+--------+
|XmNactivateCallback | XmCCallback | XtCallbackList | NULL | C |
+-------------------------+--------------------------+----------------+------------+--------+
|XmNarmCallback | XmCCallback | XtCallbackList | NULL | C |
+-------------------------+--------------------------+----------------+------------+--------+
|XmNarrowDirection | XmCArrowDirection | unsigned char | XmARROW_UP | CSG |
+-------------------------+--------------------------+----------------+------------+--------+
|XmNdetailShadowThickness | XmCDetailShadowThickness | Dimension | 2 | CSG |
+-------------------------+--------------------------+----------------+------------+--------+
|XmNdisarmCallback | XmCCallback | XtCallbackList | NULL | C |
+-------------------------+--------------------------+----------------+------------+--------+
|XmNmultiClick | XmCMultiClick | unsigned char | dynamic | CSG |
+-------------------------+--------------------------+----------------+------------+--------+
+-------------------------+--------------------------+----------------+------------+--------+
XmNactivateCallback
Specifies a list of callbacks that is called when the ArrowButtonGadget is activated. To activate the button, press and release
BSelect while the pointer is inside the ArrowButtonGadget. Activating the ArrowButtonGadget also disarms it. The reason sent by
this callback is XmCR_ACTIVATE. This callback uses the XmQTactivatable trait.
XmNarmCallback
Specifies a list of callbacks that is called when the ArrowButtonGadget is armed. To arm this widget, press BSelect while the
pointer is inside the ArrowButtonGadget. The reason sent by this callback is XmCR_ARM.
XmNarrowDirection
Sets the arrow direction. The values for this resource are
o XmARROW_UP
o XmARROW_DOWN
o XmARROW_LEFT
o XmARROW_RIGHT
XmNdetailShadowThickness
Specifies the thickness of the inside arrow shadows. The default thickness is 2 pixels.
XmNdisarmCallback
Specifies a list of callbacks that is called when the ArrowButtonGadget is disarmed. To disarm this widget, press and release
BSelect while the pointer is inside the ArrowButtonGadget. The reason sent by this callback is XmCR_DISARM.
XmNmultiClick
If a button click is followed by another button click within the time span specified by the display's multiclick time and this
resource is set to XmMULTICLICK_DISCARD, the second click is not processed. If this resource is set to XmMULTICLICK_KEEP, the
event is processed and click_count is incremented in the callback structure. When the ArrowButtonGadget is not in a menu, the
default value is XmMULTICLICK_KEEP.
Inherited Resources
XmArrowButtonGadget inherits behavior and resources from the superclasses described in the following tables. For a complete description of
each resource, refer to the reference page for that superclass.
+-------------------------------------------------------------------------------------------------+
| | XmGadget Resource Set | | |
|Name | Class | Type | Default | Access |
+----------------------+-----------------------+------------------+----------------------+--------+
|XmNbackground | XmCBackground | Pixel | dynamic | CSG |
+----------------------+-----------------------+------------------+----------------------+--------+
|XmNbackgroundPixmap | XmCPixmap | Pixmap | XmUNSPECIFIED_PIXMAP | CSG |
+----------------------+-----------------------+------------------+----------------------+--------+
|XmNbottomShadowColor | XmCBottomShadowColor | Pixel | dynamic | CSG |
+----------------------+-----------------------+------------------+----------------------+--------+
|XmNbottomShadowPixmap | XmCBottomShadowPixmap | Pixmap | dynamic | CSG |
+----------------------+-----------------------+------------------+----------------------+--------+
|XmNhelpCallback | XmCCallback | XtCallbackList | NULL | C |
+----------------------+-----------------------+------------------+----------------------+--------+
|XmNforeground | XmCForeground | Pixel | dynamic | CSG |
+----------------------+-----------------------+------------------+----------------------+--------+
|XmNhighlightColor | XmCHighlightColor | Pixel | dynamic | CSG |
+----------------------+-----------------------+------------------+----------------------+--------+
|XmNhighlightOnEnter | XmCHighlightOnEnter | Boolean | False | CSG |
+----------------------+-----------------------+------------------+----------------------+--------+
|XmNhighlightPixmap | XmCHighlightPixmap | Pixmap | dynamic | CSG |
+----------------------+-----------------------+------------------+----------------------+--------+
|XmNhighlightThickness | XmCHighlightThickness | Dimension | 2 | CSG |
+----------------------+-----------------------+------------------+----------------------+--------+
|XmNlayoutDirection | XmNCLayoutDirection | XmDirection | dynamic | CG |
+----------------------+-----------------------+------------------+----------------------+--------+
|XmNnavigationType | XmCNavigationType | XmNavigationType | XmNONE | CSG |
+----------------------+-----------------------+------------------+----------------------+--------+
|XmNshadowThickness | XmCShadowThickness | Dimension | 2 | CSG |
+----------------------+-----------------------+------------------+----------------------+--------+
|XmNtopShadowColor | XmCTopShadowColor | Pixel | dynamic | CSG |
+----------------------+-----------------------+------------------+----------------------+--------+
|XmNtopShadowPixmap | XmCTopShadowPixmap | Pixmap | dynamic | CSG |
+----------------------+-----------------------+------------------+----------------------+--------+
|XmNtraversalOn | XmCTraversalOn | Boolean | True | CSG |
+----------------------+-----------------------+------------------+----------------------+--------+
|XmNunitType | XmCUnitType | unsigned char | dynamic | CSG |
+----------------------+-----------------------+------------------+----------------------+--------+
|XmNuserData | XmCUserData | XtPointer | NULL | CSG |
+----------------------+-----------------------+------------------+----------------------+--------+
+----------------------+-----------------------+------------------+----------------------+--------+
+---------------------------------------------------------------------+
| | RectObj Resource Set | | |
|Name | Class | Type | Default | Access |
+---------------------+----------------+-----------+---------+--------+
|XmNancestorSensitive | XmCSensitive | Boolean | dynamic | G |
+---------------------+----------------+-----------+---------+--------+
|XmNborderWidth | XmCBorderWidth | Dimension | 0 | N/A |
+---------------------+----------------+-----------+---------+--------+
|XmNheight | XmCHeight | Dimension | dynamic | CSG |
+---------------------+----------------+-----------+---------+--------+
|XmNsensitive | XmCSensitive | Boolean | True | CSG |
+---------------------+----------------+-----------+---------+--------+
|XmNwidth | XmCWidth | Dimension | dynamic | CSG |
+---------------------+----------------+-----------+---------+--------+
|XmNx | XmCPosition | Position | 0 | CSG |
+---------------------+----------------+-----------+---------+--------+
|XmNy | XmCPosition | Position | 0 | CSG |
+---------------------+----------------+-----------+---------+--------+
+---------------------+----------------+-----------+---------+--------+
+---------------------------------------------------------------------+
| | Object Resource Set | | |
|Name | Class | Type | Default | Access |
+-------------------+-------------+----------------+---------+--------+
|XmNdestroyCallback | XmCCallback | XtCallbackList | NULL | C |
+-------------------+-------------+----------------+---------+--------+
+-------------------+-------------+----------------+---------+--------+
Callback Information
A pointer to the following structure is passed to each callback:
typedef struct
{
int reason;
XEvent * event;
int click_count;
} XmArrowButtonCallbackStruct;
reason Indicates why the callback was invoked.
event Points to the XEvent that triggered the callback.
click_count
This value is valid only when the reason is XmCR_ACTIVATE. It contains the number of clicks in the last multiclick sequence if
the XmNmultiClick resource is set to XmMULTICLICK_KEEP, otherwise it contains 1. The activate callback is invoked for each click
if XmNmultiClick is set to XmMULTICLICK_KEEP.
Behavior
XmArrowButtonGadget includes behavior from XmGadget. The following list describes additional XmArrowButtonGadget behavior:
<Btn1Down>:
Draws the shadow in the selected state and calls the callbacks for XmNarmCallback.
<Btn1Down> or <Btn1Up>:
Draws the shadow in the unselected state. If the pointer is within the ArrowButtonGadget, calls the callbacks for XmNactivate-
Callback. Calls the callbacks for XmNdisarmCallback.
<Btn1Down>(2+):
If XmNmultiClick is XmMULTICLICK_DISCARD, this action does nothing. If XmNmultiClick is XmMULTICLICK_KEEP, this action draws the
shadow in the selected state and calls the callbacks for XmNarmCallback.
<Btn1Up>(2+):
If XmNmultiClick is XmMULTICLICK_DISCARD, this action does nothing.
If XmNmultiClick is XmMULTICLICK_KEEP, this action increments click_count in the callback structure and draws the shadow in the
unselected state. If the pointer is within the ArrowButtonGadget, this action calls the callbacks for XmNactivateCallback and
XmNdisarmCallback.
<Key><osfSelect>:
Draws the shadow in the selected state and calls the callbacks for XmNarmCallback. Arranges for the shadow to be drawn in the
unselected state and the callbacks for XmNactivateCallback and XmNdisarmCallback to be called, either immediately or at a later
time.
<Key><osfHelp>:
Calls the callbacks for XmNhelpCallback if any exist. If there are no help callbacks for this widget, this action calls the help
callbacks for the nearest ancestor that has them.
<Enter>: Draws the ArrowButtonGadget shadow in its selected state if the pointer leaves and re-enters the gadget while <Btn1> is pressed.
<Leave>: Draws the ArrowButtonGadget shadow in its unselected state if the pointer leaves the gadget while <Btn1> is pressed.
Virtual Bindings
The bindings for virtual keys are vendor specific. For information about bindings for virtual buttons and keys, see VirtualBindings(3).
RELATED
Object(3), RectObj(3), XmCreateArrowButtonGadget(3), XmGadget(3), XmVaCreateArrowButtonGadget(3), and XmVaCreateManagedArrowButtonGad-
get(3).
XmArrowButtonGadget(library call)