UControl (3U)

#include <Unidraw/uctrl.h>

UControl is an abstract class that augments InterViews' Control base class to deal with Unidraw's ControlInfo objects, which define a keyboard equivalent for the control. UControlInteractor is an abstract base class for interactors that base their appearance on the information in a ControlInfo object. UControl subclasses can use UControlInteractor subclasses to define their appearance.

Unidraw-based applications needn't use UControls and UControlInteractors to help define their look and feel if Unidraw's keyboard equivalent mechanism is not needed.

virtual void SetControlInfo(ControlInfo*)

ControlInfo* GetControlInfo()

Assign and retrieve the UControl's ControlInfo object.

UControl(ControlInfo*)

UControl(const char*, ControlInfo*)

UControl provides protected constructors that let subclasses initialize the ControlInfo object and optionally specify their instance name.

virtual void SetControlInfo(ControlInfo*)

ControlInfo* GetControlInfo()

Assign and retrieve the UControlInteractor's ControlInfo object.

virtual void Highlight(boolean)

The UControlInteractor's appearance is defined by a Graphic object, which it builds from information in its ControlInfo object. By default, UControlInteractor highlights itself by drawing this graphic with its foreground and background colors reversed.

UControlInteractor(ControlInfo*)

UControlInteractor()

UControlInteractor defines two protected constructors. One takes the ControlInfo object to use as an argument. This constructor also initializes the UControlInteractor's _label protected member by calling InitLabel (described below) with the ControlInfo object. The parameterless constructor initializes _label to nil. Both constructors initialize the UControlInteractor's _picture protected member to point to an instance of a Picture object, which defines the UControlInteractor's appearance.

virtual void Invert()

Invert reverses _picture's colors without drawing it.

Graphic* InitLabel(ControlInfo*)

Create a graphic from the information stored in a ControlInfo object that defines the UControlInteractor's appearance. This operation creates a GraphicView of the ControlInfo's GraphicComp and returns a copy of the view's graphic.

Control(3I), ControlInfo(3U), Graphic(3U), GraphicComp(3U), GraphicView(3U), KeyMap(3U)