XmBulletinBoard

Motif 2.1 Programmer's Reference

XmBulletinBoard

The BulletinBoard widget class

Format

#include <Xm/BulletinB.h>

DESCRIPTION

BulletinBoard is a composite widget that provides simple geometry management for child widgets. It does not force positioning on its children, but can be set to reject geometry requests that result in overlapping children. BulletinBoard is the base widget for most dialog widgets and is also used as a general container widget.

Modal and modeless dialogs are implemented as collections of widgets that include a DialogShell, a BulletinBoard (or subclass) child of the shell, and various dialog components (buttons, labels, and so on) that are children of BulletinBoard. BulletinBoard defines callbacks useful for dialogs (focus, map, unmap), which are available for application use. If its parent is a DialogShell, BulletinBoard passes title and input mode (based on dialog style) information to the parent, which is responsible for appropriate communication with the window manager.

The default value for XmNinitialFocus is the value of XmNdefaultButton.

BulletinBoard uses the XmQTtakesDefault trait, and holds the XmQTdialogShellSavvy and XmQTspecifyRenderTable traits.

Classes

BulletinBoard inherits behavior, resources, and traits from the Core, Composite, Constraint, and XmManager classes.

The class pointer is xmBulletinBoardWidgetClass.

The class name is XmBulletinBoard.

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 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).

`XmBulletinBoard Resource Set`
`Name`	`Class`	`Type`	`Default`	`Access`
XmNallowOverlap	XmCAllowOverlap	Boolean	True	CSG
XmNautoUnmanage	XmCAutoUnmanage	Boolean	True	CG
XmNbuttonFontList	XmCButtonFontList	XmFontList	dynamic	CSG
XmNbuttonRenderTable	XmCButtonRenderTable	XmRenderTable	dynamic	CSG
XmNcancelButton	XmCWidget	Widget	NULL	SG
XmNdefaultButton	XmCWidget	Widget	NULL	SG
XmNdefaultPosition	XmCDefaultPosition	Boolean	True	CSG
XmNdialogStyle	XmCDialogStyle	unsigned char	dynamic	CSG
XmNdialogTitle	XmCDialogTitle	XmString	NULL	CSG
XmNfocusCallback	XmCCallback	XtCallbackList	NULL	C
XmNlabelFontList	XmCLabelFontList	XmFontList	dynamic	CSG
XmNlabelRenderTable	XmCLabelRenderTable	XmRenderTable	dynamic	CSG
XmNmapCallback	XmCCallback	XtCallbackList	NULL	C
XmNmarginHeight	XmCMarginHeight	Dimension	10	CSG
XmNmarginWidth	XmCMarginWidth	Dimension	10	CSG
XmNnoResize	XmCNoResize	Boolean	False	CSG
XmNresizePolicy	XmCResizePolicy	unsigned char	XmRESIZE_ANY	CSG
XmNshadowType	XmCShadowType	unsigned char	XmSHADOW_OUT	CSG
XmNtextFontList	XmCTextFontList	XmFontList	dynamic	CSG
XmNtextRenderTable	XmCTextRenderTable	XmRenderTable	dynamic	CSG
XmNtextTranslations	XmCTranslations	XtTranslations	NULL	C
XmNunmapCallback	XmCCallback	XtCallbackList	NULL	C

XmNallowOverlap

Controls the policy for overlapping child widgets. If this resource is True, BulletinBoard allows geometry requests that result in overlapping children.

XmNautoUnmanage

Controls whether or not BulletinBoard is automatically unmanaged after a button is activated. If this resource is True on initialization and if the BulletinBoard's parent is a DialogShell, BulletinBoard adds a callback to button children (PushButtons, PushButtonGadgets, and DrawnButtons) that unmanages the BulletinBoard when a button is activated. If this resource is False on initialization or if the BulletinBoard's parent is not a DialogShell, the BulletinBoard is not automatically unmanaged. For BulletinBoard subclasses with Apply or Help buttons, activating those buttons does not automatically unmanage the BulletinBoard.

XmNbuttonFontList

Specifies the font list used for button descendants. See the XmNbuttonRenderTable resource.

XmNbuttonRenderTable

Specifies the render table used for BulletinBoard's button descendants. If this value is NULL at initialization, the parent hierarchy of the widget is searched for an ancestor that holds the XmQTspecifyRenderTable trait. If such an ancestor is found, the render table is initialized to the XmBUTTON_RENDER_TABLE value of the ancestor widget. If no such ancestor is found, the default is implementation dependent. Refer to XmRenderTable (3) for more information on the creation and structure of a render table.

XmNcancelButton

Specifies the widget ID of the Cancel button. BulletinBoard's subclasses, which define a Cancel button, set this resource. BulletinBoard does not directly provide any behavior for that button.

XmNdefaultButton

Specifies the widget ID of the default button. Some BulletinBoard subclasses, which define a default button, set this resource. BulletinBoard defines translations and installs accelerators that activate that button when KActivate is pressed and the keyboard focus is not in another button. Controls the positioning of a DialogShell managing a BulletinBoard. If the BulletinBoard is not being managed by a DialogShell, then this resource has no effect. If XmNdefaultPosition is True, the DialogShell will center itself at the center of its own parent. For example, if the parent of the DialogShell is an ApplicationShell, then the center of the DialogShell will be at the same coordinates as the center of the ApplicationShell. If the DialogShell becomes unmapped (but stays managed) and then remapped, this resource has no influence on the DialogShell's position. If this resource is False, the DialogShell does not automatically center itself.

XmNdialogStyle

Indicates the dialog style associated with the BulletinBoard. If the parent of the BulletinBoard is a DialogShell, the parent's XmNmwmInputMode is set according to the value of this resource. This resource can be set only if the BulletinBoard is unmanaged. Possible values for this resource include the following:

XmDIALOG_SYSTEM_MODAL

Used for dialogs that must be responded to before any other interaction in any application.

XmDIALOG_PRIMARY_APPLICATION_MODAL

Used for dialogs that must be responded to before some other interactions in ancestors of the widget.

XmDIALOG_APPLICATION_MODAL

Used for dialogs that must be responded to before some other interactions in ancestors of the widget. This value is the same as XmDIALOG_PRIMARY_APPLICATION_MODAL, and remains for compatibility.

XmDIALOG_FULL_APPLICATION_MODAL

Used for dialogs that must be responded to before some other interactions in the same application.

XmDIALOG_MODELESS

Used for dialogs that do not interrupt interaction of any application. This is the default when the parent of the BulletinBoard is a DialogShell.

XmDIALOG_WORK_AREA

Used for BulletinBoard widgets whose parents are not DialogShells. XmNdialogStyle is forced to have this value when the parent of the BulletinBoard is not a DialogShell.

Posting a modal dialog in response to a button down or key down event (via translation actions or callbacks) can cause the corresponding button up or key up event to be lost. For example, posting a modal dialog from an XmNincrementCallback of XmScrollBar will cause the loss of the button up event, causing the XmScrollBar to auto-increment indefinitely.

XmNdialogTitle

Specifies the dialog title. If this resource is not NULL, and the parent of the BulletinBoard is a subclass of WMShell, BulletinBoard sets the XmNtitle and XmNtitleEncoding of its parent. If the only character set in XmNdialogTitle is ISO8859-1, XmNtitle is set to the string of the title, and XmNtitleEncoding is set to STRING. If XmNdialogTitle contains character sets other than ISO8859-1, XmNtitle is set to the string of the title converted to a compound text string, and XmNtitleEncoding is set to COMPOUND_TEXT. The direction of the title is based on the XmNlayoutDirection resource of the widget.

XmNfocusCallback

Specifies the list of callbacks that is called when the BulletinBoard widget or one of its descendants accepts the input focus. The callback reason is XmCR_FOCUS.

XmNlabelFontList

Specifies the font list used for label descendants. See the XmNlabelRenderTable resource.

XmNlabelRenderTable

Specifies the render table used for BulletinBoard's label descendants. If this value is NULL at initialization, the parent hierarchy of the widget is searched for an ancestor that holds the XmQTspecifyRenderTable trait. If such an ancestor is found, the render table is initialized to the XmLABEL_RENDER_TABLE value of the ancestor widget. If no such ancestor is found, the default is implementation dependent. Refer to XmRenderTable (3) for more information on the creation and structure of a render table.

XmNmapCallback

Specifies the list of callbacks that is called only when the parent of the BulletinBoard is a DialogShell. In this case, this callback list is invoked when the BulletinBoard widget is mapped. The callback reason is XmCR_MAP. DialogShells are usually mapped when the DialogShell is managed.

XmNmarginHeight

Specifies the minimum spacing in pixels between the top or bottom edge of BulletinBoard and any child widget.

XmNmarginWidth

Specifies the minimum spacing in pixels between the left or right edge of BulletinBoard and any child widget.

XmNnoResize

Controls whether or not resize controls are included in the window manager frame around the BulletinBoard's parent. If this resource is set to True, mwm does not include resize controls in the window manager frame containing the parent of the BulletinBoard if the parent is a subclass of VendorShell. If this resource is set to False, the window manager frame does include resize controls. Other controls provided by mwm can be included or excluded through the mwm resources provided by VendorShell.

XmNresizePolicy

Controls the policy for resizing BulletinBoard widgets. Possible values include

XmRESIZE_NONE

Fixed size

XmRESIZE_ANY

Shrink or grow as needed

XmRESIZE_GROW

Grow only

XmNshadowType

Describes the shadow drawing style for BulletinBoard. This resource can have the following values:

XmSHADOW_IN

Draws the BulletinBoard shadow so that it appears inset. This means that the bottom shadow visuals and top shadow visuals are reversed.

XmSHADOW_OUT

Draws the BulletinBoard shadow so that it appears outset.

XmSHADOW_ETCHED_IN

Draws the BulletinBoard shadow using a double line giving the effect of a line etched into the window, similar to the Separator widget.

XmSHADOW_ETCHED_OUT

Draws the BulletinBoard shadow using a double line giving the effect of a line coming out of the window, similar to the Separator widget.

XmNtextFontList

Specifies the font list used for text descendants. See the XmNtextRenderTable resource.

XmNtextRenderTable

Specifies the render table used for BulletinBoard's text descendants. If this value is NULL at initialization, the parent hierarchy of the widget is searched for an ancestor that holds the XmQTspecifyRenderTable trait. If such an ancestor is found, the render table is initialized to the XmTEXT_RENDER_TABLE value of the ancestor widget. If no such ancestor is found, the default is implementation dependent. Refer to XmRenderTable (3) for more information on the creation and structure of a render table.

XmNtextTranslations

It adds translations to any Text widget or Text widget subclass that is added as a child of BulletinBoard.

XmNunmapCallback

Specifies the list of callbacks that is called only when the parent of the BulletinBoard is a DialogShell. In this case, this callback list is invoked when the BulletinBoard widget is unmapped. The callback reason is XmCR_UNMAP. DialogShells are usually unmapped when the DialogShell is unmanaged.

Inherited Resources

BulletinBoard 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.

`XmManager Resource Set`
`Name`	`Class`	`Type`	`Default`	`Access`
XmNbottomShadowColor	XmCBottomShadowColor	Pixel	dynamic	CSG
XmNbottomShadowPixmap	XmCBottomShadowPixmap	Pixmap	XmUNSPECIFIED_PIXMAP	CSG
XmNforeground	XmCForeground	Pixel	dynamic	CSG
XmNhelpCallback	XmCCallback	XtCallbackList	NULL	C
XmNhighlightColor	XmCHighlightColor	Pixel	dynamic	CSG
XmNhighlightPixmap	XmCHighlightPixmap	Pixmap	dynamic	CSG
XmNinitialFocus	XmCInitialFocus	Widget	dynamic	CSG
XmNlayoutDirection	XmCLayoutDirection	XmDirection	dynamic	CG
XmNnavigationType	XmCNavigationType	XmNavigationType	XmTAB_GROUP	CSG
XmNpopupHandlerCallback	XmCCallback	XtCallbackList	NULL	C
XmNshadowThickness	XmCShadowThickness	Dimension	dynamic	CSG
XmNstringDirection	XmCStringDirection	XmStringDirection	dynamic	CG
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

`Composite Resource Set`
`Name`	`Class`	`Type`	`Default`	`Access`
XmNchildren	XmCReadOnly	WidgetList	NULL	G
XmNinsertPosition	XmCInsertPosition	XtOrderProc	NULL	CSG
XmNnumChildren	XmCReadOnly	Cardinal	0	G

`Core Resource Set`
`Name`	`Class`	`Type`	`Default`	`Access`
XmNaccelerators	XmCAccelerators	XtAccelerators	dynamic	N/A
XmNancestorSensitive	XmCSensitive	Boolean	dynamic	G
XmNbackground	XmCBackground	Pixel	dynamic	CSG
XmNbackgroundPixmap	XmCPixmap	Pixmap	XmUNSPECIFIED_PIXMAP	CSG
XmNborderColor	XmCBorderColor	Pixel	XtDefaultForeground	CSG
XmNborderPixmap	XmCPixmap	Pixmap	XmUNSPECIFIED_PIXMAP	CSG
XmNborderWidth	XmCBorderWidth	Dimension	0	CSG
XmNcolormap	XmCColormap	Colormap	dynamic	CG
XmNdepth	XmCDepth	int	dynamic	CG
XmNdestroyCallback	XmCCallback	XtCallbackList	NULL	C
XmNheight	XmCHeight	Dimension	dynamic	CSG
XmNinitialResourcesPersistent	XmCInitialResourcesPersistent	Boolean	True	C
XmNmappedWhenManaged	XmCMappedWhenManaged	Boolean	True	CSG
XmNscreen	XmCScreen	Screen *	dynamic	CG
XmNsensitive	XmCSensitive	Boolean	True	CSG
XmNtranslations	XmCTranslations	XtTranslations	dynamic	CSG
XmNwidth	XmCWidth	Dimension	dynamic	CSG
XmNx	XmCPosition	Position	0	CSG
XmNy	XmCPosition	Position	0	CSG

Callback Information

A pointer to the following structure is passed to each callback:

typedef struct
{
        int 
reason;
        XEvent 
* event;
} XmAnyCallbackStruct;

reason

Indicates why the callback was invoked

event

Points to the XEvent that triggered the callback

Translations

XmBulletinBoard includes the translations from XmManager.

Additional Behavior

The XmBulletinBoard widget has the following additional behavior:

KeyosfCancel:

Calls the activate callbacks for the cancel button if it is sensitive. If no cancel button exists and if the parent of the BulletinBoard is a manager, passes the event to the parent.

KeyosfActivate:

Calls the activate callbacks for the button with the keyboard focus. If no button has the keyboard focus, calls the activate callbacks for the default button if it is sensitive. In a List widget or single-line Text widget, the List or Text action associated with KeyosfActivate is called before the BulletinBoard actions associated with KeyosfActivate.

In a multiline Text widget, any KeyosfActivate event except KeyEnter calls the Text action associated with KeyosfActivate, then the BulletinBoard actions associated with KeyosfActivate. If no button has the focus, no default button exists, and the parent of the BulletinBoard is a manager, passes the event to the parent.

FocusIn:

Calls the callbacks for XmNfocusCallback. When the focus policy is XmPOINTER, the callbacks are called when the pointer enters the window. When the focus policy is XmEXPLICIT, the callbacks are called when the user traverses to the widget.

Map:

Calls the callbacks for XmNmapCallback.

Unmap:

Calls the callbacks for XmNunmapCallback.

Virtual Bindings

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

RELATED

Composite (3), Constraint (3), Core (3), XmCreateBulletinBoard (3), XmCreateBulletinBoardDialog (3), XmDialogShell (3), and XmManager (3).