XmPushButtonGadget - Online Linux Manual Page

Section : library call

NAME

XmPushButtonGadget

— The PushButtonGadget widget class .iX "XmPushButtonGadget" .iX "widget class" "PushButtonGadget"

SYNOPSIS

#include <Xm/PushBG.h>

DESCRIPTION

PushButtonGadget issues commands within an application. It consists of a text label or pixmap surrounded by a border shadow. When PushButtonGadget is selected, the shadow changes to give the appearance that the PushButtonGadget has been pressed in. When PushButtonGadget is unselected, the shadow changes to give the appearance that the PushButtonGadget is out.

The default behavior associated with a PushButtonGadget in a menu depends on the type of menu system in which it resides. By default, <Btn1>

controls the behavior of the PushButtonGadget. In addition,

<Btn3>

controls the behavior of the PushButtonGadget if it resides in a PopupMenu system. The actual mouse button used is determined by its RowColumn parent.

Thickness for a second shadow may be specified with the XmNshowAsDefault

resource. If it has a nonzero value, the Label's

XmNmarginLeft

XmNmarginRight

XmNmarginTop

, and

XmNmarginBottom

resources may be modified to accommodate the second shadow.

If an initial value is specified for XmNarmPixmap

but not for

XmNlabelPixmap

, the

XmNarmPixmap

value is used for

XmNlabelPixmap

PushButtonGadget uses the XmQTmenuSystem

and

XmQTspecifyRenderTable

traits, and holds the

XmQactivatable

XmQTmenuSavvy

, and

XmQTtakesDefault

traits.

Classes

PushButtonGadget inherits behavior, resources, and traits from Object

RectObj

XmGadget

and

XmLabelGadget

The class pointer is xmPushButtonGadgetClass

The class name is XmPushButtonGadget

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 values 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

XmC

prefix and use the remaining letters. To specify one of the defined values for a resource in a

.Xdefaults

file, remove the

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).

XmPushButtonGadget Resource Set
Name	Class	Type	Default	Access

XmNactivateCallback	XmCCallback	XtCallbackList	NULL	C

XmNarmCallback	XmCCallback	XtCallbackList	NULL	C

XmNarmColor	XmCArmColor	Pixel	dynamic	CSG

XmNarmPixmap	XmCArmPixmap	Pixmap	XmUNSPECIFIED_PIXMAP	CSG

XmNdefaultButtonShadowThickness	XmCdefaultButtonShadowThickness	Dimension	dynamic	CSG

XmNdisarmCallback	XmCCallback	XtCallbackList	NULL	C

XmNfillOnArm	XmCFillOnArm	Boolean	True	CSG

XmNmultiClick	XmCMultiClick	unsigned char	dynamic	CSG

XmNshowAsDefault	XmCShowAsDefault	Dimension	0	CSG

XmNactivateCallback

Specifies the list of callbacks that is called when the PushButtonGadget is activated. It is activated when the user presses and releases the active mouse button while the pointer is inside the PushButtonGadget. Activating PushButtonGadget also disarms it. For this callback, the reason is XmCR_ACTIVATE

. This callback uses the

XmQTactivatable

trait.

XmNarmCallback

Specifies the list of callbacks that is called when PushButtonGadget is armed. It is armed when the user presses the active mouse button while the pointer is inside the PushButtonGadget. For this callback, the reason is XmCR_ARM

XmNarmColor

Specifies the color with which to fill the armed button. XmNfillOnArm

must be set to True for this resource to have an effect. The default for a color display is a color between the background and the bottom shadow color. For a monochrome display, the default is set to the foreground color, and any text in the label appears in the background color when the button is armed.

XmNarmPixmap

Specifies the pixmap to be used as the button face if XmNlabeltype

XmPIXMAP

XmPIXMAP_AND_STRING

and PushButtonGadget is armed. This resource is disabled when the PushButtonGadget is in a menu.

XmNdefaultButtonShadowThickness

This resource specifies the width of the default button indicator shadow. If this resource is 0 (zero), the width of the shadow comes from the value of the XmNshowAsDefault

resource. If this resource is greater than zero, the

XmNshowAsDefault

resource is only used to specify whether this button is the default. The default value is the initial value of

XmNshowAsDefault

XmNdisarmCallback

Specifies the list of callbacks that is called when the PushButtonGadget is disarmed. PushButtonGadget is disarmed when the user presses and releases the active mouse button while the pointer is inside that gadget. For this callback, the reason is XmCR_DISARM

XmNfillOnArm

Forces the PushButtonGadget to fill the background of the button with the color specified by XmNarmColor

when the button is armed and when this resource is set to True. If it is False, only the top and bottom shadow colors are switched. When the PushButtonGadget is in a menu, this resource is ignored and assumed to be False.

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 button is in a menu, the default is

XmMULTICLICK_DISCARD

; otherwise, for a button not in a menu, the default value is

XmMULTICLICK_KEEP

XmNshowAsDefault

If XmNdefaultButtonShadowThickness

is greater than 0 (zero), a value greater than zero in this resource specifies to mark this button as the default button. If

XmNdefaultButtonShadowThickness

is 0, a value greater than 0 in this resource specifies to mark this button as the default button with the shadow thickness specified by this resource. The space between the shadow and the default shadow is equal to the sum of both shadows. The default value is 0. When the Display resource

XmNdefaultButtonEmphasis

has a value of

XmEXTERNAL_HIGHLIGHT

(the default), PushButton draws the location cursor outside of the outer shadow. When this resource has a value of

XmINTERNAL_HIGHLIGHT

, the highlight is drawn between the inner and outer shadows. When this value is not 0, the Label

XmNmarginLeft

XmNmarginRight

XmNmarginTop

, and

XmNmarginBottom

resources may be modified to accommodate the second shadow. This resource is disabled when the PushButton is in a menu.

Inherited Resources

PushButtonGadget 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.

XmLabelGadget Resource Set
Name	Class	Type	Default	Access

XmNaccelerator	XmCAccelerator	String	NULL	CSG

XmNacceleratorText	XmCAcceleratorText	XmString	NULL	CSG

XmNalignment	XmCAlignment	unsigned char	dynamic	CSG

XmNfontList	XmCFontList	XmFontList	dynamic	CSG

XmNlabelInsensitivePixmap	XmCLabelInsensitivePixmap	Pixmap	XmUNSPECIFIED_PIXMAP	CSG

XmNlabelPixmap	XmCLabelPixmap	Pixmap	dynamic	CSG

XmNlabelString	XmCXmString	XmString	dynamic	CSG

XmNlabelType	XmCLabelType	unsigned char	XmSTRING	CSG

XmNmarginBottom	XmCMarginBottom	Dimension	dynamic	CSG

XmNmarginHeight	XmCMarginHeight	Dimension	2	CSG

XmNmarginLeft	XmCMarginLeft	Dimension	dynamic	CSG

XmNmarginRight	XmCMarginRight	Dimension	dynamic	CSG

XmNmarginTop	XmCMarginTop	Dimension	dynamic	CSG

XmNmarginWidth	XmCMarginWidth	Dimension	2	CSG

XmNmnemonic	XmCMnemonic	KeySym	NULL	CSG

XmNpixmapPlacement	XmCPixmapPlacement	unsigned int	XmPIXMAP_LEFT	CSG

XmNpixmapTextPadding	XmCSpace	Dimension	2	CSG

XmNmnemonicCharSet	XmCMnemonicCharSet	String	dynamic	CSG

XmNrecomputeSize	XmCRecomputeSize	Boolean	True	CSG

XmNrenderTable	XmCRenderTable	XmRenderTable	dynamic	CSG

XmNstringDirection	XmCStringDirection	XmStringDirection	dynamic	CSG

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

; } XmPushButtonCallbackStruct;

reason

Indicates why the callback was invoked.

event

Points to the XEvent

that triggered the callback.

click_count

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

XmPushButtonGadget

includes behavior from

XmGadget

XmPushButtonGadget

includes menu traversal behavior from

XmLabelGadget

. Additional behavior for XmPushButtonGadget is described in the following list.

Drags the contents of a PushButtonGadget label, identified when <Btn2>

is pressed. This action is undefined for PushButtonGadgets used in a menu system.

This action arms the PushButtonGadget.

In a menu, this action unposts any menus posted by the PushButtonGadget's parent menu, disables keyboard traversal for the menu, and enables mouse traversal for the menu. It draws the shadow in the armed state. Unless the button is already armed, it calls the XmNarmCallback

callbacks.

If the button is not in a menu, this action draws the shadow in the armed state. If XmNfillOnArm

is set to True, it fills the button with the color specified by

XmNarmColor

. If

XmNlabelType

XmPIXMAP

XmPIXMAP_AND_STRING

, the

XmNarmPixmap

is used for the button face. It calls the

XmNarmCallback

callbacks.

<Btn1>

(2+)

If XmNmultiClick

XmMULTICLICK_DISCARD

, this action does nothing.

If XmNmultiClick

XmMULTICLICK_KEEP

, this action draws the shadow in the armed state. If the button is not in a menu and if

XmNfillOnArm

is set to True, it fills the button with the color specified by

XmNarmColor

. If

XmNlabelType

XmPIXMAP

XmPIXMAP_AND_STRING

, the

XmNarmPixmap

is used for the button face. This action calls the

XmNarmCallback

callbacks.

In a menu, this action unposts all menus in the menu hierarchy and activates the PushButtonGadget. It calls the XmNactivateCallback

callbacks and then the

XmNdisarmCallback

callbacks.

If the PushButtonGadget is not in a menu, this action draws the shadow in the unarmed state. If XmNfillOnArm

is set to True, the background color reverts to the unarmed color. If

XmNlabelType

XmPIXMAP

XmPIXMAP_AND_STRING

, the

XmNlabelPixmap

is used for the button face. If the pointer is still within the button, this action calls the callbacks for

XmNactivateCallback

and

XmNdisarmCallback

(2+)

If XmNmultiClick

XmMULTICLICK_DISCARD

, this action does nothing.

If XmNmultiClick

XmMULTICLICK_KEEP

, this action increments

click_count

in the callback structure and draws the shadow in the unarmed state. If the button is not in a menu and if

XmNfillOnArm

is set to True, the background color reverts to the unarmed color. If

XmNlabelType

XmPIXMAP

XmPIXMAP_AND_STRING

XmNlabelPixmap

is used for the button face. If the pointer is within the PushButtonGadget, this action calls the callbacks for

XmNactivateCallback

and

XmNdisarmCallback

<Key>

In a menu, this action unposts all menus in the menu hierarchy, unless the button is already armed, and calls the XmNarmCallback

callbacks, the

XmNactivateCallback

and the

XmNdisarmCallback

callbacks. Outside a menu,

KActivate

has no effect. For PushButtonGadgets outside of a menu, if the parent is a manager, this action passes the event to the parent.

<Key>

In a menu, this action unposts all menus in the menu hierarchy, unless the button is already armed, and calls the XmNarmCallback

callbacks. This acton calls the

XmNactivateCallback

and

XmNdisarmCallback

callbacks.

Outside a menu, this action draws the shadow in the armed state and, if XmNfillOnArm

is set to True, fills the button with the color specified by

XmNarmColor

. If

XmNlabelType

XmPIXMAP

XmPIXMAP_AND_STRING

XmNarmPixmap

is used for the button face. This action calls the

XmNarmCallback

callbacks.

Outside a menu, this action also arranges for the following to happen, either immediately or at a later time: the shadow is drawn in the unarmed state and, if XmNfillOnArm

is set to True, the background color reverts to the unarmed color. If

XmNlabelType

XmPIXMAP

XmPIXMAP_AND_STRING

, the

XmNlabelPixmap

is used for the button face. The

XmNactivateCallback

and

XmNdisarmCallback

callbacks are called.

<Key>

In a Pulldown or Popup MenuPane, unposts all menus in the menu hierarchy and restores keyboard focus to the widget that had the focus before the menu system was entered. This action 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.

<Key>

In a toplevel Pulldown MenuPane from a MenuBar, unposts the menu, disarms the MenuBar CascadeButton and the MenuBar, and restores keyboard focus to the widget that had the focus before the MenuBar was entered. In other Pulldown MenuPanes, unposts the menu.

In a Popup MenuPane, unposts the menu and restores keyboard focus to the widget from which the menu was posted. For a PushButtonGadget outside of a menu, if the parent is a manger, this action passes the event to the parent.

<Enter>

In a menu, if keyboard traversal is enabled, this action does nothing. Otherwise, it draws the shadow in the armed state and calls the XmNarmCallback

callbacks.

If the PushButtonGadget is not in a menu and the cursor leaves and then reenters the PushButtonGadget while the button is pressed, this action draws the shadow in the armed state. If XmNfillOnArm

is set to True, it also fills the button with the color specified by

XmNarmColor

. If

XmNlabelType

XmPIXMAP

XmPIXMAP_AND_STRING

, the

XmNarmPixmap

is used for the button face.

<Leave>

In a menu, if keyboard traversal is enabled, this action does nothing. Otherwise, it draws the shadow in the unarmed state and calls the XmNdisarmCallback

callbacks.

If the PushButtonGadget is not in a menu and the cursor leaves the PushButtonGadget while the button is pressed, this action draws the shadow in the unarmed state. If XmNfillOnArm

is set to True, the background color reverts to the unarmed color. If

XmNlabelType

XmPIXMAP

XmPIXMAP_AND_STRING

, the

XmNlabelPixmap

is used for the button face.

Virtual Bindings

The bindings for virtual keys are vendor specific. For information about bindings for virtual buttons and keys, see VirtualBindings(3).

Object(3), RectObj(3), XmCreatePushButtonGadget(3), XmGadget(3), XmLabelGadget(3), XmRowColumn(3), XmVaCreatePushButtonGadget(3), and XmVaCreateManagedPushButtonGadget(3).

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