Grip Widget Application header file <X11/Xaw/Grip.h> Class header file <X11/Xaw/GripP.h> Class gripWidgetClass Class Name Grip Superclass Simple The Grip widget provides a small rectangular region in which user input events (such as ButtonPress or ButtonRelease) may be handled. The most common use for the Grip widget is as an attachment point for visually repositioning an object, such as the pane border in a Paned widget. Resources When creating a Grip widget instance, the following resources are retrieved from the argument list or from the resource database: Name Class Type Notes Default Value accelerators Accelerators AcceleratorTable NULL ancestorSensitive AncestorSensitive Boolean D True background Background Pixel XtDefaultBackground backgroundPixmap Pixmap Pixmap XtUnspecifiedPixmap borderColor BorderColor Pixel XtDefaultForeground borderPixmap Pixmap Pixmap XtUnspecifiedPixmap borderWidth BorderWidth Dimension 0 callback Callback Callback NULL colormap Colormap Colormap Parent's Colormap cursor Cursor Cursor None cursorName Cursor String NULL depth Depth int C Parent's Depth destroyCallback Callback XtCallbackList NULL foreground Foreground Pixel XtDefaultForeground height Height Dimension 8 insensitiveBorder Insensitive Pixmap GreyPixmap international International Boolean C False mappedWhenManaged MappedWhenManaged Boolean True pointerColor Foreground Pixel XtDefaultForeground pointerColorBackground Background Pixel XtDefaultBackground screen Screen Screen R Parent's Screen sensitive Sensitive Boolean True translations Translations TranslationTable NULL width Width Dimension 8 x Position Position 0 y Position Position 0 callback All routines on this list are called whenever the GripAction action routine is invoked. The call_data contains all information passed to the action routine. A detailed description is given below in the Grip Actions section. foreground A pixel value which indexes the widget's colormap to derive the color used to flood fill the entire Grip widget. Grip Actions The Grip widget does not declare any default event translation bindings, but it does declare a single action routine named GripAction. The client specifies an arbitrary event translation table, optionally giving parameters to the GripAction routine. The GripAction routine executes the callbacks on the callback list, passing as call_data a pointer to a XawGripCallData structure, defined in the Grip widget's application header file. typedef struct _XawGripCallData { XEvent *event; String *params; Cardinal num_params; } XawGripCallDataRec, *XawGripCallData, GripCallDataRec, *GripCallData; /* supported for R4 compatibility */ In this structure, the event is a pointer to the input event that triggered the action. params and num_params give the string parameters specified in the translation table for the particular event binding. The following is an example of a translation table that uses the GripAction: <Btn1Down>: GripAction(press) <Btn1Motion>: GripAction(move) <Btn1Up>: GripAction(release) For a complete description of the format of translation tables, see the X Toolkit Intrinsics - C Language Interface.