Widget Building Library API

This chapter contains descriptions of the following functions, which are included in the widget building library API:

PtAddWidgetData(): Add data to the widget data chain
PtAnchorWidget(): Anchor the provided widget
PtApplyAnchors(): Anchor a container and its children
PtAttemptResize(): Adjust the size of a widget
PtCalcAnchorOffsets(): Calculate anchor offsets
PtCalcRegion(): Determine whether or not a widget needs a region
PtChildBoundingBox(): Calculate a widget's canvas and its children's bounding boxes
PtClipAdd(): Add a clipping rectangle to the stack
PtClipRemove(): Take a clipping rectangle off the stack
PtCompoundRedirect(): Redirect widgets to a parent
PtContainerChildRedirect(): Set the pointer to the child-redirector function
PtContainerDeregister(): Deregister a container from its parent
PtContainerRegister(): Register a container with its parent
PtCoreChangeRegion(): Determine if a region is required
PtCreateWidgetClass(): Create a widget class
PtDamageExposed(): Damage the specified widgets
PtDestroyCallbackList(): Free the specified callbacks
PtDestroyHotkeyCallbacks(): Free the specified hotkey callbacks
PtDestroyRawCallbacks(): Free the specified raw callbacks
PtFindNextWidgetData(): Find the next appropriate data block
PtFindResourceRecord(): Find the record associated with a resource
PtFindWidgetData(): Find the first data block of a given type and subtype
PtGetAnchoredExtent(): Calculate a new anchor rectangle
PtGetStruct(): Retrieve the specified resource
PtInvokeCallbackList(): Invoke a callback list
PtInvokeResizeCallbacks(): Invoke the resize callbacks of the specified container
PtMoveResizeWidget(): Synchronize a widget's extent
PtRemoveWidgetData(): Remove data from the widget data chain
PtResizePolicy(): Determine whether a widget has a resize policy
PtSetExtentFromArea(): Calculate the extent of a widget
PtSetStruct(): Set the specified resource
PtSetValue(): Set the value of a resource using mod_f
PtSuperClassCalcOpaque(): Call the Calc Opaque Rect method of the specified superclass
PtSuperClassChildCreated(): Invoke a Child Created method
PtSuperClassChildDestroyed(): Invoke a Child Destroyed method
PtSuperClassChildGettingFocus(): Invoke a Child Getting Focus method
PtSuperClassChildGettingResources(): Invoke a Child Getting Resources method
PtSuperClassChildLosingFocus(): Invoke a Child Losing Focus method
PtSuperClassChildMovedResized(): Invoke a Child Moved/Resized method
PtSuperClassChildRealized(): Invoke a Child Realized method
PtSuperClassChildSettingResources(): Invoke a Child Setting Resources method
PtSuperClassChildUnrealized(): Invoke a Child Unrealized method
PtSuperClassConnect(), PtSuperClassConnectFrom(): Invoke the Connection method of the specified widget class
PtSuperClassDraw(): Invoke the Draw method of the specified superclass
PtSuperClassExtent(): Invoke the Extent method of the specified superclass
PtSuperClassGetResources(): Get the specified resource
PtSuperClassGotFocus(): Invoke the Got Focus method of the specified superclass
PtSuperClassInit(), PtSuperClassInitFrom(): Invoke the Initialize method of the specified widget class
PtSuperClassLostFocus(): Invoke the Lost Focus method of the specified superclass
PtSuperClassRawEvent(), PtSuperClassRawEventFrom(): Invoke the raw callback list of the specified widget class
PtSuperClassRealized(): Invoke the Realization method of the specified widget class
PtSuperClassSetResources(): Set resources
PtUpdateVisibility(): Tell the widget library about a change in visibility
PtWidgetAbove(): Identify the position of a widget in the hierarchy relative to another widget