Classes¶

Manager inherits behavior and resources from Core, Composite, and Constraint.

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).

XmNbottomShadowColor

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.

XmNbottomShadowPixmap

Specifies the pixmap to use to draw the bottom and right sides of the border shadow.

XmNforeground

Specifies the foreground drawing color used by manager widgets.

XmNhelpCallback

Specifies the list of callbacks that are called when the help key sequence is pressed. The reason sent by this callback is XmCR_HELP.

XmNhighlightColor

Specifies the color of the highlighting rectangle. This color is used if the highlight pixmap resource is XmUNSPECIFIED_PIXMAP.

XmNhighlightPixmap

Specifies the pixmap used to draw the highlighting rectangle.

XmNinitialFocus

Specifies the ID of a widget descendant of the manager. The widget must meet these conditions:

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:

Focus is then determined as follows:

If a shell hierarchy regains focus after losing it, focus returns to the widget that had the focus at the time it left the hierarchy.

The use of XmNinitialFocus is undefined if the manager is a MenuBar, PulldownMenu, PopupMenu, or OptionMenu.

XmNlayoutDirection

Specifies the direction in which components of the manager (including strings) are laid out. The values are of type XmDirection. If the widget's parent is a manager or shell, the value is inherited from the widget's parent. Otherwise, it is inherited from the closest ancestor vendor or menu shell. Refer to the XmDirection(3) reference page for the possible direction values.

XmNnavigationType

Determines whether the widget is a tab group.

XmNpopupHandlerCallback

Allows the application to control which popup menu will be automatically posted. The reason can either be XmCR_POST or XmCR_REPOST:

This callback uses the XmPopupHandlerCallbackStruct structure to pass information.

XmNshadowThickness

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 (zero).

XmNstringDirection

Is a synthetic resource for setting XmNlayoutDirection. The values for this resource are XmSTRING_DIRECTION_L_TO_R and XmSTRING_DIRECTION_R_TO_L. Refer to the XmNlayoutDirection resource description. The XmNstringDirection resource is obsoleted by XmNlayoutDirection, but is kept here for backward compatibility.

XmNtopShadowColor

Specifies the color to use to draw the top and left sides of the border shadow. This color is used if the XmNtopShadowPixmap resource is NULL.

XmNtopShadowPixmap

Specifies the pixmap to use to draw the top and left sides of the border shadow.

XmNtraversalOn

Specifies whether traversal is activated for this widget.

XmNunitType

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.

The unit type can also be specified in resource files, with the following format:

<floating value><unit>

where:

For example,

xmfonts*XmMainWindow.height: 10.4cm
*PostIn.width: 3inches

XmNunitType can have the following values:

XmNuserData

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 specified, the colors are automatically generated. On a single-plane system, a black and white color scheme is generated. Otherwise, four colors 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 sufficient 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 resources from the superclasses described in the following tables. For a complete description of each resource, refer to the reference page for that superclass.

Callback Information¶

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

typedef struct
{


        int reason;


        XEvent * event;
} XmAnyCallbackStruct;

reason

Indicates why the callback was invoked. For this callback, reason is set to XmCR_HELP.

event

Points to the XEvent that triggered the callback.

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

typedef struct
{


        int reason;


        XEvent * event;


        Widget menuToPost;


        Boolean postIt;


        Widget target;
} XmPopupHandlerCallbackStruct;

reason

Indicates why the callback was invoked.

event

Points to the XEvent that triggered the handler.

menuToPost

Specifies the popup menu that the menu system believes should be posted. The application may modify this field.

postIt

Indicates whether the posting process should continue. The application may modify this field.

target

Specifies the most specific widget or gadget that the menu sytem found from the event that matches the event.

Translations¶

The following set of translations are used by Manager widgets that have Gadget children. Because 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.

The following key names are listed in the X standard key event translation table syntax. This format is the one used by Motif to specify the widget actions corresponding to a given key. A brief overview of the format is provided under VirtualBindings(3). For a complete description of the format, please refer to the X Toolkit Instrinsics Documentation.

<BtnMotion>:

ManagerGadgetButtonMotion()

c<Btn1Down>:

ManagerGadgetTraverseCurrent()

∼c<Btn1Down>:

ManagerGadgetArm()

∼c<Btn1Down>,∼c<Btn1Up>:

ManagerGadgetActivate()

∼c<Btn1Up>:

ManagerGadgetActivate()

∼c<Btn1Down>(2+):

ManagerGadgetMultiArm()

∼c<Btn1Up>(2+):

ManagerGadgetMultiActivate()

<Btn2Down>:

ManagerGadgetDrag()

:<Key><osfActivate>:

ManagerParentActivate()

:<Key><osfCancel>:

ManagerParentCancel()

:<Key><osfSelect>:

ManagerGadgetSelect()

:<Key><osfHelp>:

ManagerGadgetHelp()

∼s ∼m ∼a <Key>Return:

ManagerParentActivate()

∼s ∼m ∼a <Key>space:

ManagerGadgetSelect()

<Key>:

ManagerGadgetKeyInput()

:<Key><osfBeginLine>:

ManagerGadgetTraverseHome()

:<Key><osfUp>:

ManagerGadgetTraverseUp()

:<Key><osfDown>:

ManagerGadgetTraverseDown()

:<Key><osfLeft>:

ManagerGadgetTraverseLeft()

:<Key><osfRight>:

ManagerGadgetTraverseRight()

s ∼m ∼a <Key>Tab:

ManagerGadgetPrevTabGroup()

∼m ∼a <Key>Tab:

ManagerGadgetNextTabGroup()

Action Routines¶

The XmManager action routines are

GadgetTakeFocus():

Causes the current gadget to take keyboard focus when Ctrl<Btn1Down> is pressed.

ManagerGadgetActivate():

Causes the current gadget to be activated.

ManagerGadgetArm():

Causes the current gadget to be armed.

ManagerGadgetButtonMotion():

Causes the current gadget to process a mouse motion event.

ManagerGadgetDrag():

Causes the current gadget to begin a drag operation. This action is undefined for gadgets used in a menu system.

ManagerGadgetHelp():

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.

ManagerGadgetKeyInput():

Causes the current gadget to process a keyboard event.

ManagerGadgetMultiActivate():

Causes the current gadget to process a multiple mouse click.

ManagerGadgetMultiArm():

Causes the current gadget to process a multiple mouse button press.

ManagerGadgetNextTabGroup():

This action depends on the value of the Display resource XmNenableButtonTab. When XmNenableButtonTab is False (default), this action 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.

When XmNenableButtonTab is True, this action moves to the next item within the current tab group, unless it is the last item in the tab group. When the item is the last in the group, the action traverses to the first item in the next tab group. The XmNenableButtonTab behavior applies only to PushButton, ArrowButton, and DrawnArrow.

ManagerGadgetPrevTabGroup():

This action depends on the value of the Display resource XmNenableButtonTab. When XmNenableButtonTab is False (default), this action traverses to the first item in the previous tab group. If the beginning of the tab group list is reached, it wraps to the end of the tab group list.

When XmNenableButtonTab is True, this action moves to the previous item within the current tab group unless it is the first item in the tab group. When the item is the first in the group, the action traverses to the first item in the previous tab group. The XmNenableButtonTab behavior applies only PushButton, ArrowButton, and DrawnButton.

ManagerGadgetSelect():

Causes the current gadget to be armed and activated.

ManagerGadgetTraverseCurrent

Causes the current gadget to take keyboard focus when Ctrl<Btn1Down> is pressed. Gadget is not activated.

ManagerGadgetTraverseDown():

Traverses to the next item below the current gadget in the current tab group, wrapping if necessary. The wrapping direction depends on the layout direction of the widget tab group.

ManagerGadgetTraverseHome():

Traverses to the first widget or gadget in the current tab group.

ManagerGadgetTraverseLeft():

Traverses to the next item to the left of the current gadget in the current tab group, wrapping if necessary. The wrapping direction depends on the layout direction of the widget tab group.

ManagerGadgetTraverseNext():

Traverses to the next item in the current tab group, wrapping if necessary. The wrapping direction depends on the layout direction of the widget tab group.

ManagerGadgetTraversePrev():

Traverses to the previous item in the current tab group, wrapping if necessary. The wrapping direction depends on the layout direction of the widget tab group.

ManagerGadgetTraverseRight()

Traverses to the next item to the right of the current gadget in the current tab, wrapping if necessary. widget tab group. The wrapping direction depends on the layout direction of the widget tab group.

ManagerGadgetTraverseUp():

Traverses to the next item above the current gadget in the current tab group, wrapping if necessary. The wrapping direction depends on the layout direction of the widget tab group.

ManagerParentActivate():

If the parent is a manager, passes the <osfActivate> event received by the current widget/gadget to its parent.

ManagerParentCancel():

If the parent is a manager, passes the <osfCancel> event received by the current widget/gadget to its parent.

Additional Behavior¶

This widget has the additional behavior described below:

<FocusIn>:

If the shell's keyboard focus policy is XmEXPLICIT and the event occurs in a gadget, causes the gadget to be highlighted and to take the focus.

<FocusOut>:

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(3).