*** UNIX MANUAL PAGE BROWSER ***

XmDrawingArea(3X) XmDrawingArea(3X) NAME XmDrawingArea - The DrawingArea widget class SYNOPSIS #include <Xm/DrawingA.h> DESCRIPTION DrawingArea is an empty widget that is easily adaptable to a variety of purposes. It does no drawing and defines no behavior except for invok- ing callbacks. Callbacks notify the application when graphics need to be drawn (exposure events or widget resize) and when the widget re- ceives input from the keyboard or mouse. Applications are responsible for defining appearance and behavior as needed in response to DrawingArea callbacks. DrawingArea is also a composite widget and subclass of XmManager that supports minimal geometry management for multiple widget or gadget children. Classes DrawingArea inherits behavior and resources from the Core, Composite, Constraint, and XmManager classes. The class pointer is xmDrawingAreaWidgetClass. The class name is XmDrawingArea. 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). XmDrawingArea Resource Set Class: XmCCallback Default: NULL Type: XtCallbackList Access: C Class: XmCCallback Default: NULL Type: XtCallbackList Access: C Class: XmC- MarginHeight Default: 10 Type: Dimension Access: CSG Class: XmCMargin- Width Default: 10 Type: Dimension Access: CSG Class: XmCCallback De- fault: NULL Type: XtCallbackList Access: C Class: XmCResizePolicy De- fault: XmRESIZE_ANY Type: unsigned char Access: CSG Specifies the list of callbacks that is called when DrawingArea receives an exposure event. The callback reason is XmCR_EXPOSE. The callback structure also includes the exposure event. The default bit gravity for Manager windows is NorthWestGravity. This may cause the XmNexposeCallback procedures not to be in- voked when the DrawingArea window is made smaller. Specifies the list of callbacks that is called when the DrawingArea re- ceives a keyboard or mouse event (key or button, up or down). The callback reason is XmCR_INPUT. The callback structure also includes the input event. Specifies the minimum spacing in pix- els between the top or bottom edge of DrawingArea and any child widget. Specifies the minimum spacing in pixels between the left or right edge of DrawingArea and any child widget. Speci- fies the list of callbacks that is called when the DrawingArea is resized. The callback reason is XmCR_RESIZE. Controls the policy for resizing DrawingArea widgets. Possible values include XmRESIZE_NONE (fixed size), XmRESIZE_ANY (shrink or grow as needed), and XmRESIZE_GROW (grow only). Inherited Resources DrawingArea inherits behavior and resources from the following super- classes. For a complete description of each resource, refer to the man page for that superclass. 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: NULL Type: Widget Access: CSG Class: XmCNavigationType Default: XmTAB_GROUP Type: XmNavigationType Access: CSG Class: XmCShadowThickness Default: 0 Type: Dimension Ac- cess: CSG Class: XmCStringDirection Default: dynamic Type: XmStringDi- rection 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 Access: 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: CSG 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; Window window; } XmDrawingAreaCallbackStruct; Indicates why the callback was invoked Points to the XEvent that trig- gered the callback. This is NULL for the XmNresizeCallback. Is set to the widget window Translations XmDrawingArea inherits translations from XmManager. Before calling the XmManager actions, all events in the inherited translations except <Bt- nMotion>, <EnterWindow>, <LeaveWindow>, <FocusIn>, and <FocusOut> also call the DrawingAreaInput() action. XmDrawingArea has the additional translations listed below. These translations may not directly correspond to a translation table. MAny BAny Press:DrawingAreaInput() MAny BAny Release:DrawingAreaInput() MAny KAny Press:DrawingAreaInput() ManagerGadgetKeyInput() MAny KAny Release:DrawingAreaIn- put() Action Routines The XmDrawingArea action routines are described below: Unless the event takes place in a gadget, calls the callbacks for XmNinputCallback. Causes the current gadget to process a keyboard event. Additional Behavior The XmDrawingArea widget has the additional behavior described below: Calls the callbacks for XmNexposeCallback. Calls the callbacks for Xm- NresizeCallback. 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), XmCreateDrawingArea(3X), Xm- Manager(3X) XmDrawingArea(3X)