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XmDrawingArea(3X)
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XmDrawingArea - The DrawingArea widget class
#include <Xm/DrawingA.h>
DrawingArea is an empty widget that is easily adaptable to
a variety of purposes. It does no drawing and defines no
behavior except for invoking callbacks. Callbacks notify
the application when graphics need to be drawn (exposure
events or widget resize) and when the widget receives
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 [Toc] [Back]
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 [Toc] [Back]
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).
XmDrawingArea Resource Set [Toc] [Back]
Class: XmCCallback
Default: NULL
Type: XtCallbackList
Access: C
Class: XmCCallback
Default: NULL
Type: XtCallbackList
Access: C
Class: XmCMarginHeight
Default: 10
Type: Dimension
Access: CSG
Class: XmCMarginWidth
Default: 10
Type: Dimension
Access: CSG
Class: XmCCallback
Default: NULL
Type: XtCallbackList
Access: C
Class: XmCResizePolicy
Default: 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 invoked when the
DrawingArea window is made smaller. Specifies the
list of callbacks that is called when the
DrawingArea receives 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
pixels 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. Specifies
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 [Toc] [Back]
DrawingArea inherits behavior and resources from the following
superclasses. For a complete description of each
resource, refer to the man page for that superclass.
XmManager Resource Set [Toc] [Back]
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
Access: 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
Access: CSG
Class: XmCStringDirection
Default: dynamic
Type: XmStringDirection
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 [Toc] [Back]
Class: XmCReadOnly
Default: NULL
Type: WidgetList
Access: G
Class: XmCInsertPosition
Default: NULL
Type: XtOrderProc
Access: CSG
Class: XmCReadOnly
Default: 0
Type: Cardinal
Access: G
Core Resource Set [Toc] [Back]
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
Access: 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
Default: NULL
Type: XtCallbackList
Access: C
Class: XmCHeight
Default: dynamic
Type: Dimension
Access: CSG
Class: XmCInitialResourcesPersistent
Default: True
Type: Boolean
Access: C
Class: XmCMappedWhenManaged
Default: True
Type: Boolean
Access: CSG
Class: XmCScreen
Default: dynamic
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: Position
Access: CSG
Class: XmCPosition
Default: 0
Type: Position
Access: CSG
Callback Information [Toc] [Back]
A pointer to the following structure is passed to each
callback: typedef struct {
int reason;
XEvent * event;
Window window; } XmDrawingAreaCallbackStruct;
Indicates why the callback was invoked Points to the
XEvent that triggered the callback. This is NULL for the
XmNresizeCallback. Is set to the widget window
Translations [Toc] [Back]
XmDrawingArea inherits translations from XmManager. Before
calling the XmManager actions, all events in the inherited
translations except <BtnMotion>, <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:DrawingAreaInput()
Action Routines [Toc] [Back]
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 [Toc] [Back]
The XmDrawingArea widget has the additional behavior
described below: Calls the callbacks for XmNexposeCallback.
Calls the callbacks for XmNresizeCallback.
Virtual Bindings [Toc] [Back]
The bindings for virtual keys are vendor specific. For
information about bindings for virtual buttons and keys,
see VirtualBindings(3X).
Composite(3X), Constraint(3X), Core(3X), XmCreateDrawingArea(3X), XmManager(3X)
XmDrawingArea(3X)
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