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XmCommand(3X) XmCommand(3X) NAME XmCommand - The Command widget class SYNOPSIS #include <Xm/Command.h> DESCRIPTION Command is a special-purpose composite widget for command entry that provides a built-in command-history mechanism. Command includes a com- mand-line text-input field, a command-line prompt, and a command-his- tory list region. One additional WorkArea child may be added to the Command after cre- ation. Whenever a command is entered, it is automatically added to the end of the command-history list and made visible. This does not change the se- lected item in the list, if there is one. Many of the new resources specified for Command are actually Selection- Box resources that have been renamed for clarity and ease of use. Classes Command inherits behavior and resources from Core, Composite, Con- straint, XmManager, XmBulletinBoard, and XmSelectionBox classes. The class pointer is xmCommandWidgetClass. The class name is XmCommand. New Resources The following table defines a set of widget resources used by the pro- grammer 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). XmCommand Resource Set Class: XmCTextString Default: "" Type: XmString Access: CSG Class: Xm- CCallback Default: NULL Type: XtCallbackList Access: C Class: XmCCall- back Default: NULL Type: XtCallbackList Access: C Class: XmCItems De- fault: NULL Type: XmStringTable Access: CSG Class: XmCItemCount De- fault: 0 Type: int Access: CSG Class: XmCMaxItems Default: 100 Type: int Access: CSG Class: XmCVisibleItemCount Default: dynamic Type: int Access: CSG Class: XmCPromptString Default: dynamic Type: XmString Ac- cess: CSG Contains the current command-line text. This is the XmN- textString resource in SelectionBox, renamed for Command. This resource can also be modified via XmCommandSetValue and XmCom- mandAppendValue functions. The command area is a Text widget. Specifies the list of callbacks that is called when the value of the command changes. The callback reason is XmCR_COM- MAND_CHANGED. This is equivalent to the XmNvalueChangedCallback of the Text widget, except that a pointer to an XmCommandCall- backStructure is passed, and the structure's value member con- tains the XmString. Specifies the list of callbacks that is called when a command is entered in the Command. The callback reason is XmCR_COMMAND_ENTERED. A pointer to an XmCommandCall- back structure is passed. Lists XmString items that make up the contents of the history list. This is the XmNlistItems resource in SelectionBox, renamed for Command. XtGetValues for this re- source returns the list items themselves, not a copy of the list items. The application must not free the returned items. Speci- fies the number of XmStrings in XmNhistoryItems. This is the XmNlistItemCount resource in SelectionBox, renamed for Command. The value must not be negative. Specifies the maximum number of items allowed in the history list. Once this number is reached, an existing list item must be removed before a new item can be added to the list. For each command entered, the first list item is removed from the list, so the new command can be added to the list. The value must be greater than 0. Specifies the number of items in the history list that should be visible at one time. In effect, it sets the height (in lines) of the his- tory list window. This is the XmNlistVisibleItemCount resource in SelectionBox, renamed for Command. The value must be greater than 0. The default is dynamic based on the height of the list. Specifies a prompt for the command line. This is the XmNselec- tionLabelString resource in SelectionBox, renamed for Command. The default may vary depending on the value of the XmNstringDi- rection resource and the locale. In the C locale the default is ">". Inherited Resources Command inherits behavior and resources from the following super- classes. For a complete description of each resource, refer to the man page for that superclass. XmSelectionBox Resource Set Class: XmCCallback Default: NULL Type: XtCallbackList Access: N/A Class: XmCApplyLabelString Default: dynamic Type: XmString Access: N/A Class: XmCCallback Default: NULL Type: XtCallbackList Access: N/A Class: XmCCancelLabelString Default: dynamic Type: XmString Access: N/A Class: XmCChildPlacement Default: XmPLACE_ABOVE_SELECTION Type: unsigned char Access: CSG Class: XmCDialogType Default: XmDIALOG_COM- MAND Type: unsigned char Access: G Class: XmCHelpLabelString Default: dynamic Type: XmString Access: N/A Class: XmCItemCount Default: 0 Type: int Access: CSG Class: XmCItems Default: NULL Type: Xm- StringTable Access: CSG Class: XmCListLabelString Default: NULL Type: XmString Access: N/A Class: XmCVisibleItemCount Default: dynamic Type: int Access: CSG Class: XmCMinimizeButtons Default: False Type: Boolean Access: N/A Class: XmCMustMatch Default: False Type: Boolean Access: N/A Class: XmCCallback Default: NULL Type: XtCallbackList Access: N/A Class: XmCCallback Default: NULL Type: XtCallbackList Access: N/A Class: XmCOkLabelString Default: dynamic Type: XmString Access: N/A Class: XmCSelectionLabelString Default: dynamic Type: XmString Access: CSG Class: XmCTextAccelerators Default: default Type: XtAccelerators Access: C Class: XmCColumns Default: dynamic Type: short Access: CSG Class: XmCTextString Default: "" Type: XmString Access: CSG XmBulletinBoard Resource Set Class: XmCAllowOverlap Default: True Type: Boolean Access: CSG Class: XmCAutoUnmanage Default: False Type: Boolean Access: N/A Class: Xm- CButtonFontList Default: dynamic Type: XmFontList Access: N/A Class: XmCWidget Default: NULL Type: Widget Access: N/A Class: XmCWidget De- fault: NULL Type: Widget Access: N/A Class: XmCDefaultPosition De- fault: False Type: Boolean Access: CSG Class: XmCDialogStyle Default: dynamic Type: unsigned char Access: CSG Class: XmCDialogTitle Default: NULL Type: XmString Access: CSG Class: XmCCallback Default: NULL Type: XtCallbackList Access: C Class: XmCLabelFontList Default: dynamic Type: XmFontList Access: CSG Class: XmCCallback Default: NULL Type: XtCall- backList Access: C Class: XmCMarginHeight Default: 10 Type: Dimension Access: CSG Class: XmCMarginWidth Default: 10 Type: Dimension Access: CSG Class: XmCNoResize Default: False Type: Boolean Access: CSG Class: XmCResizePolicy Default: XmRESIZE_NONE Type: unsigned char Access: CSG Class: XmCShadowType Default: XmSHADOW_OUT Type: unsigned char Access: CSG Class: XmCTextFontList Default: dynamic Type: XmFontList Access: CSG Class: XmCTranslations Default: NULL Type: XtTranslations Access: C Class: XmCCallback Default: NULL Type: XtCallbackList Access: C XmManager Resource Set Class: XmCBottomShadowColor Default: dynamic Type: Pixel Access: CSG Class: XmCBottomShadowPixmap Default: XmUNSPECIFIED_PIXMAP Type: Pixmap Access: CSG Class: XmCForeground Default: dynamic Type: Pixel Access: CSG Class: XmCCallback Default: NULL Type: XtCallbackList Ac- cess: C Class: XmCHighlightColor Default: dynamic Type: Pixel Access: CSG Class: XmCHighlightPixmap Default: dynamic Type: Pixmap Access: CSG Class: XmCInitialFocus Default: dynamic Type: Widget Access: CSG Class: XmCNavigationType Default: XmTAB_GROUP Type: XmNavigationType Access: CSG Class: XmCShadowThickness Default: dynamic Type: Dimension Access: CSG Class: XmCStringDirection Default: dynamic Type: Xm- StringDirection Access: CG Class: XmCTopShadowColor Default: dynamic Type: Pixel Access: CSG Class: XmCTopShadowPixmap Default: dynamic Type: Pixmap Access: CSG Class: XmCTraversalOn Default: True Type: Boolean Access: CSG Class: XmCUnitType Default: dynamic Type: unsigned char Access: CSG Class: XmCUserData Default: NULL Type: XtPointer Ac- cess: CSG Composite Resource Set Class: XmCReadOnly Default: NULL Type: WidgetList Access: G Class: Xm- CInsertPosition Default: NULL Type: XtOrderProc Access: CSG Class: Xm- CReadOnly Default: 0 Type: Cardinal Access: G Core Resource Set Class: XmCAccelerators Default: dynamic Type: XtAccelerators Access: N/A Class: XmCSensitive Default: dynamic Type: Boolean Access: G Class: XmCBackground Default: dynamic Type: Pixel Access: CSG Class: XmCPixmap Default: XmUNSPECIFIED_PIXMAP Type: Pixmap Access: CSG Class: XmCBorderColor Default: XtDefaultForeground Type: Pixel Access: CSG Class: XmCPixmap Default: XmUNSPECIFIED_PIXMAP Type: Pixmap Ac- cess: CSG Class: XmCBorderWidth Default: 0 Type: Dimension Access: CSG Class: XmCColormap Default: dynamic Type: Colormap Access: CG Class: XmCDepth Default: dynamic Type: int Access: CG Class: XmCCallback De- fault: NULL Type: XtCallbackList Access: C Class: XmCHeight Default: dynamic Type: Dimension Access: CSG Class: XmCInitialResourcesPersis- tent Default: True Type: Boolean Access: C Class: XmCMappedWhenManaged Default: True Type: Boolean Access: CSG Class: XmCScreen Default: dy- namic Type: Screen * Access: CG Class: XmCSensitive Default: True Type: Boolean Access: CSG Class: XmCTranslations Default: dynamic Type: XtTranslations Access: CSG Class: XmCWidth Default: dynamic Type: Dimension Access: CSG Class: XmCPosition Default: 0 Type: Posi- tion Access: CSG Class: XmCPosition Default: 0 Type: Position Access: CSG Callback Information A pointer to the following structure is passed to each callback: type- def struct { int reason; XEvent * event; XmString value; int length; } XmCommandCallbackStruct; Indicates why the callback was invoked Points to the XEvent that trig- gered the callback Specifies the XmString in the CommandArea Specifies the size of the command in XmString Translations XmCommand inherits translations from XmSelectionBox. Accelerators The XmNtextAccelerators from XmSelectionBox are added to the Text de- scendant of XmCommand. Action Routines The XmCommand action routines are described below: When called with a 0 argument, selects the previous item in the history list and replaces the text with that item. When called with a 1 argument, selects the next item in the his- tory list and replaces the text with that item. When called with a 2 argument, selects the first item in the history list and replaces the text with that item. When called with a 3 argument, selects the last item in the his- tory list and replaces the text with that item. Calls the callbacks for XmNcommandChangedCallback. Additional Behavior The Command widget has the additional behavior described below: If the parent of the Command is a manager, the event is passed to the parent. Calls the Text widget's XmNactivateCallback callbacks. If the text is empty, this action then returns. Otherwise, if the history list has XmNhistoryMaxItems items, it removes the first item in the list. It adds the text to the history list as the last item, clears the text, and calls the XmNcommandEnteredCallback callbacks. When any change is made to the text edit widget, this action calls the callbacks for XmN- commandChangedCallback. Calls the List widget's XmNdefaultActionCall- back callbacks. If the history list has XmNhistoryMaxItems items, this action removes the first item in the list. It adds the selected List item to the history list as the last item, clears the text, and calls the XmNcommandEnteredCallback callbacks. Calls the callbacks for XmN- focusCallback. When a Command that is the child of a DialogShell is mapped, this action calls the callbacks for XmNmapCallback. When a Command that is the child of a DialogShell is unmapped, this action 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(3X). SEE ALSO Composite(3X), Constraint(3X), Core(3X), XmBulletinBoard(3X), XmComman- dAppendValue(3X), XmCommandError(3X), XmCommandGetChild(3X), XmCommand- SetValue(3X), XmCreateCommand(3X), XmManager(3X), XmSelectionBox(3X) XmCommand(3X)