Class TAbstractKeyDeviceSensorNode

DescriptionHierarchyFieldsMethodsProperties

Unit

Declaration

type TAbstractKeyDeviceSensorNode = class(TAbstractSensorNode)

Description

no description available, TAbstractSensorNode description follows
no description available, TAbstractChildNode description follows
no description available, TAbstractNode description follows

Base X3D node.

Almost all X3D nodes inherit from this. (Exception: X3DMetadataObject. So you cannot have metadata of metadata of...)

Hierarchy

Overview

Methods

Public procedure CreateNode; override;
Public procedure KeyDown(Key: TKey; C: char; const Time: TX3DTime); virtual;
Public procedure KeyUp(Key: TKey; C: char; const Time: TX3DTime); virtual;

Description

Methods

Public procedure CreateNode; override;
 
Public procedure KeyDown(Key: TKey; C: char; const Time: TX3DTime); virtual;

React to key down/up events.

This is used by TCastleSceneCore to communicate with this key sensor.

Semantics follow TInputPressRelease behavior for EventType = itKey. This means that Key may be K_None (if not representable as TKey) and C may be #0 (if not representable as char), but not both — at least one of Key or C must contains something useful. Also, key presses are affected by the "key repeat" feature of the OS (windowing system actually), so when user holds down a key — we get many key down messages.

Public procedure KeyUp(Key: TKey; C: char; const Time: TX3DTime); virtual;
 

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