xmprocesstraversal(3x) [osf1 man page]
XmProcessTraversal(3X) XmProcessTraversal(3X) NAME
XmProcessTraversal - A function that determines which component receives keyboard events when a widget has the focus SYNOPSIS
#include <Xm/Xm.h> Boolean XmProcessTraversal (widget, direction) Widget widget; XmTraversalDirection direction; DESCRIPTION
XmProcessTraversal determines which component of a hierarchy receives keyboard events when the hierarchy that contains the given widget has keyboard focus. Using XmProcessTraversal to traverse to MenuBars, Pulldown MenuPanes, or Popup MenuPanes is not supported. Specifies the widget ID of the widget whose hierarchy is to be traversed. The hierarchy is only traversed up to the top of the shell. If that shell does not currently have the focus, any changes to the element with focus within that shell will not occur until the next time the shell receives focus. Specifies the direction of traversal The direction parameter can have the following values, which cause the routine to take the corresponding actions: XmTRAVERSE_CURRENT--Finds the hierarchy and the tab group that contain widget. If this tab group is not the active tab group, makes it the active tab group. If wid- get is an item in the active tab group, makes it the active item. If widget is the active tab group, makes the first traversable item in the tab group the active item. XmTRAVERSE_DOWN--Finds the hierarchy that contains widget. Finds the active item in the active tab group and makes the item below it the active item. If there is no item below, wraps. XmTRAVERSE_HOME--Finds the hierarchy that contains widget. Finds the active item in the active tab group and makes the first traversable item in the tab group the active item. XmTRA- VERSE_LEFT--Finds the hierarchy that contains widget. Finds the active item in the active tab group and makes the item to the left the active item. If there is no item to the left, wraps. XmTRAVERSE_NEXT--Finds the hierarchy that contains widget. Finds the active item in the active tab group and makes the next item in child order the active item. XmTRAVERSE_NEXT_TAB_GROUP--Finds the hierarchy that contains widget. Finds the active tab group (if any) and makes the next tab group the active tab group in the hierarchy. XmTRAVERSE_PREV--Finds the hierarchy that contains widget. Finds the active item in the active tab group and makes the previous item in child order the active item. XmTRAVERSE_PREV_TAB_GROUP--Finds the hierarchy that contains widget. Finds the active tab group (if any) and makes the previous tab group the active tab group in the hierarchy. XmTRAVERSE_RIGHT--Finds the hierarchy that contains widget. Finds the active item in the active tab group and makes the item to the right the active item. If there is no item to the right, wraps. XmTRAVERSE_UP--Finds the hierarchy that contains widget. Finds the active item in the active tab group and makes the item above it the active item. If there is no item above, wraps. CAUTIONS XmProcessTraversal will not allow traversal to a widget in a different shell. XmProcessTraversal will only allow traversal to widgets that are currently mapped. You cannot call XmProcessTraversal from inside a focusCallback routine (or you will get a segmentation fault). RETURN VALUE
Returns True if the setting succeeded. Returns False if the keyboard focus policy is not XmEXPLICIT, if there are no traversable items, or if the call to the routine has invalid parameters. SEE ALSO
XmGetVisibility(3X), XmIsTraversable(3X) XmProcessTraversal(3X)
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XmManager(3X) XmManager(3X) NAME
XmManager - The Manager widget class SYNOPSIS
#include <Xm/Xm.h> DESCRIPTION
Manager is a widget class used as a supporting superclass for other widget classes. It supports the visual resources, graphics contexts, and traversal resources necessary for the graphics and traversal mechanisms. Classes Manager inherits behavior and resources from Core, Composite, and Constraint classes. The class pointer is xmManagerWidgetClass. The class name is XmManager. 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). 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 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: XmNaviga- tionType 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 Specifies the color to use to draw the bottom and right sides of the border shadow. This color is used if the XmNbottomShadowPixmap resource is NULL. Specifies the pixmap to use to draw the bottom and right sides of the border shadow. Specifies the foreground drawing color used by manager widgets. Specifies the list of callbacks that are called when the help key sequence is pressed. The reason sent by this callback is XmCR_HELP. Specifies the color of the highlighting rectangle. This color is used if the highlight pixmap resource is XmUNSPECIFIED_PIXMAP. Specifies the pixmap used to draw the highlighting rectangle. Specifies the ID of a wid- get descendant of the manager. The widget must meet these conditions: The widget must be either a tab group or a non-tab-group wid- get that can receive keyboard focus. For the definition of a tab group, see the description of the Manager, Primitive, and Gadget XmNnavigationType resources. In general a widget can receive keyboard focus when it is a primitive, a gadget, or a manager (such as a DrawingArea with no traversable children) that acts as a primitive. The widget must not be a descendant of a tab group that is itself a descendant of the manager. That is, the widget cannot be contained within a tab group that is nested inside the manager. The widget and its ancestors must have a value of True for their XmNtraversalOn resources. If the widget does not meet these conditions, XmNinitialFocus is treated as if the value were NULL. This resource is meaningful only when the nearest shell ancestor's XmNkeyboardFocusPolicy is XmEXPLICIT. It is used to determine which widget receives focus in these situations: When the manager is the child of a shell and the shell hierarchy receives focus for the first time When focus is inside the shell hierarchy, the manager is a composite tab group, and the user traverses to the manager via the keyboard Focus is then determined as follows: If XmNinitialFocus is a traversable non-tab-group widget, that widget receives focus. If XmNinitialFocus is a traversable tab group, that tab group receives focus. If that tab group is a composite with descendant tab groups or traversable non-tab-group widgets, these procedures are used recursively to assign focus to a descendant of that tab group. If XmNinitialFocus is NULL, the first traversable non-tab-group widget that is not contained within a nested tab group receives focus. If XmNinitialFocus is NULL and no traversable non-tab-group widget exists, the first traversable tab group that is not contained within a nested tab group receives focus. If that tab group is a composite with descendant tab groups or traversable non-tab-group widgets, these procedures are used recursively to assign focus to a descendant of that tab group. If a shell hierarchy regains focus after losing it, focus returns to the widget that had the focus at the time it left the hierar- chy. The use of XmNinitialFocus is undefined if the manager is a MenuBar, PulldownMenu, PopupMenu, or OptionMenu. Determines whether the widget is a tab group. XmNONE indicates that the widget is not a tab group. XmTAB_GROUP indicates that the widget is a tab group, unless another widget in the hierarchy has an XmNnavigationType of XmEXCLUSIVE_TAB_GROUP. XmSTICKY_TAB_GROUP indicates that the widget is a tab group, even if another widget in the hierarchy has an XmNnavigationType of XmEXCLUSIVE_TAB_GROUP. XmEXCLU- SIVE_TAB_GROUP indicates that the widget is a tab group and that widgets in the hierarchy whose XmNnavigationType is XmTAB_GROUP are not tab groups. When a parent widget has an XmNnavigationType of XmEXCLUSIVE_TAB_GROUP, traversal of non-tab-group widgets within the group is based on the order of those widgets in their parent's XmNchildren list. When any widget in a hierarchy has an XmNnavigationType of XmEXCLUSIVE_TAB_GROUP, traversal of tab groups in the hierarchy proceeds to widgets in the order in which their XmNnavigationType resources were specified as XmEXCLUSIVE_TAB_GROUP or XmSTICKY_TAB_GROUP, whether by creating the widgets with that value, by calling XtSetValues, or by calling XmAddTabGroup. Specifies the thickness of the drawn border shadow. XmBulletinBoard and its descendants set this value dynamically. If the widget is a top level window, this value is set to 1. If it is not a top level window, this value is set to 0. Specifies the initial direction to draw strings. The values are XmSTRING_DIRECTION_L_TO_R and XmSTRING_DIRECTION_R_TO_L. The value of this resource is determined at creation time. If the widget's parent is a manager, this value is inherited from the widget's parent, otherwise it is set to XmSTRING_DIREC- TION_L_TO_R. Specifies the color to use to draw the top and left sides of the border shadow. This color is used if the XmNtopShad- owPixmap resource is NULL. Specifies the pixmap to use to draw the top and left sides of the border shadow. Specifies whether tra- versal is activated for this widget. Provides the basic support for resolution independence. It defines the type of units a widget uses with sizing and positioning resources. If the widget's parent is a subclass of XmManager and if the XmNunitType resource is not explicitly set, it defaults to the unit type of the parent widget. If the widget's parent is not a subclass of XmManager, the resource has a default unit type of XmPIXELS. XmNunitType can have the following values: XmPIXELS--all values provided to the widget are treated as normal pixel values. Xm100TH_MILLIMETERS--all values provided to the widget are treated as 1/100 millimeter. Xm1000TH_INCHES--all values provided to the widget are treated as 1/1000 inch. Xm100TH_POINTS--all values provided to the widget are treated as 1/100 point. A point is a unit used in text processing applications and is defined as 1/72 inch. Xm100TH_FONT_UNITS--all values provided to the widget are treated as 1/100 of a font unit. A font unit has horizontal and vertical components. These are the values of the XmScreen resources XmNhori- zontalFontUnit and XmNverticalFontUnit. Allows the application to attach any necessary specific data to the widget. This is an internally unused resource. Dynamic Color Defaults The foreground, background, top shadow, bottom shadow, and highlight color resources are dynamically defaulted. If no color data is speci- fied, the colors are automatically generated. On a single-plane system, a black and white color scheme is generated. Otherwise, four col- ors are generated, which display the correct shading for the 3-D visuals. If the background is the only color specified for a widget, the top shadow and bottom shadow colors are generated to give the 3-D appearance. Foreground and highlight colors are generated to provide suf- ficient contrast with the background color. Colors are generated only at creation. Resetting the background through XtSetValues does not regenerate the other colors. XmChangeColor can be used to recalculate all associated colors based on a new background color. Inherited Resources Manager inherits the following resources from the named superclasses. For a complete description of each resource, refer to the man page for that superclass. Composite Resource Set 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 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: XmCMapped- WhenManaged 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: Posi- tion Access: CSG Callback Information A pointer to the following structure is passed to each callback: typedef struct { int reason; XEvent * event; } XmAnyCallbackStruct; Indicates why the callback was invoked. For this callback, reason is set to XmCR_HELP. Points to the XEvent that triggered the callback. Translations The following set of translations are used by Manager widgets that have Gadget children. Since Gadgets cannot have translations associated with them, it is the responsibility of the Manager widget to intercept the events of interest and pass them to any Gadget child with focus. These events are ignored if no Gadget child has the focus. These translations may not directly correspond to a translation table. BAny Motion: ManagerGadgetButtonMotion() BSelect Press: ManagerGadgetArm() BSelect Click: ManagerGadgetActivate() BSelect Release:Man- agerGadgetActivate() BSelect Press 2+:ManagerGadgetMultiArm() BSelect Release 2+:ManagerGadgetMultiActivate() BDrag Press: ManagerGadget- Drag() KSelect: ManagerGadgetSelect() KActivate: ManagerParentActivate() KCancel: ManagerParentCancel() KPrevField: Man- agerGadgetPrevTabGroup() KNextField: ManagerGadgetNextTabGroup() KUp: ManagerGadgetTraverseUp() KDown: ManagerGadget- TraverseDown() KLeft: ManagerGadgetTraverseLeft() KRight: ManagerGadgetTraverseRight() KBeginLine: ManagerGadgetTraverse- Home() KHelp: ManagerGadgetHelp() KAny: ManagerGadgetKeyInput() Action Routines The XmManager action routines are described below: Causes the current gadget to be activated. Causes the current gadget to be armed. Causes the current gadget to process a mouse motion event. Drags the contents of a gadget label, identified by pressing BDrag. This action creates a DragContext object whose XmNexportTargets resource is set to COMPOUND_TEXT for a label type of XmSTRING; otherwise, PIXMAP if the label type is XmPIXMAP. This action is undefined for gadgets used in a menu system. Calls the callbacks for the current gadget's 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. Causes the current gadget to process a keyboard event. Causes the current gadget to process a multiple mouse click. Causes the current gadget to process a multiple mouse button press. Traverses to the first item in the next tab group. If the current tab group is the last entry in the tab group list, it wraps to the beginning of the tab group list. Traverses to the first item in the previ- ous tab group. If the beginning of the tab group list is reached, it wraps to the end of the tab group list. Causes the current gadget to be armed and activated. Traverses to the next item below the current gadget in the current tab group, wrapping if necessary. Traverses to the first widget or gadget in the current tab group. Traverses to the next item to the left of the current gadget in the current tab group, wrapping if necessary. Traverses to the next item in the current tab group, wrapping if necessary. Traverses to the previous item in the current tab group, wrapping if necessary. Traverses to the next item to the right of the current gadget in the current tab group, wrapping if necessary. Traverses to the next item above the current gadget in the current tab group, wrapping if necessary. If the parent is a manager, passes the KActivate event received by the current widget/gadget to its parent. If the parent is a manager, passes the KCan- cel event received by the current widget/gadget to its parent. Additional Behavior This widget has the additional behavior described below: If the shell's keyboard focus policy is XmEXPLICIT and the event occurs in a gad- get, causes the gadget to be highlighted and to take the focus. If the shell's keyboard focus policy is XmEXPLICIT and the event occurs in a gadget, causes the gadget to be unhighlighted and to lose the focus. 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), XmChangeColor(3X), XmGadget(3X), XmScreen(3X) XmManager(3X)