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SoKeyboardEvent Class Reference

The SoKeyboardEvent class contains information about keyboard interaction. More...

#include <Inventor/events/SoKeyboardEvent.h>

Inheritance diagram for SoKeyboardEvent:
SoButtonEvent SoEvent

Public Types

enum  Key {
  NUMBER_0 = 0x0030, NUMBER_1, NUMBER_2, NUMBER_3,
  NUMBER_8, NUMBER_9, A = 0x0061, B,
  C, D, E, F,
  G, H, I, J,
  K, L, M, N,
  O, P, Q, R,
  S, T, U, V,
  W, X, Y, Z,
  PRIOR = 0xff55, NEXT, PAD_ENTER = 0xff8d, PAD_F1 = 0xff91,
  PAD_F2, PAD_F3, PAD_F4, PAD_0 = 0xff9e,
  PAD_1 = 0xff9c, PAD_2 = 0xff99, PAD_3 = 0xff9b, PAD_4 = 0xff96,
  PAD_5 = 0xff9d, PAD_6 = 0xff98, PAD_7 = 0xff95, PAD_8 = 0xff97,
  PAD_9 = 0xff9a, PAD_ADD = 0xffab, PAD_SUBTRACT = 0xffad, PAD_MULTIPLY = 0xffaa,
  PAD_DIVIDE = 0xffaf, PAD_SPACE = 0xff8d, PAD_TAB = 0xff89, PAD_INSERT = 0xff9e,
  PAD_DELETE = 0xff9f, PAD_PERIOD = 0xff9f, F1 = 0xffbe, F2,
  F3, F4, F5, F6,
  F7, F8, F9, F10,
  F11, F12, BACKSPACE = 0xff08, TAB = 0xff09,
  RETURN = 0xff0d, ENTER = 0xff0d, PAUSE = 0xff13, SCROLL_LOCK = 0xff14,
  ESCAPE = 0xff1b, DELETE = 0xffff, KEY_DELETE = DELETE, PRINT = 0xff61,
  INSERT = 0xff63, NUM_LOCK = 0xff7f, CAPS_LOCK = 0xffe5, SHIFT_LOCK = 0xffe6,
  SPACE = 0x0020, APOSTROPHE = 0x0027, COMMA = 0x002c, MINUS = 0x002d,
  PERIOD = 0x002e, SLASH = 0x002f, SEMICOLON = 0x003b, EQUAL = 0x003d,
  BRACKETLEFT = 0x005b, BACKSLASH = 0x005c, BRACKETRIGHT = 0x005d, GRAVE = 0x0060
- Public Types inherited from SoButtonEvent
enum  State { UP, DOWN, UNKNOWN }

Public Member Functions

virtual SoType getTypeId (void) const
 SoKeyboardEvent (void)
virtual ~SoKeyboardEvent ()
void setKey (Key key)
Key getKey (void) const
void setPrintableCharacter (const char c)
char getPrintableCharacter (void) const
- Public Member Functions inherited from SoButtonEvent
 SoButtonEvent (void)
virtual ~SoButtonEvent ()
void setState (State state)
State getState (void) const
- Public Member Functions inherited from SoEvent
 SoEvent (void)
virtual ~SoEvent ()
SbBool isOfType (SoType type) const
void setTime (const SbTime t)
SbTime getTime (void) const
void setPosition (const SbVec2s &p)
const SbVec2sgetPosition (void) const
const SbVec2sgetPosition (const SbViewportRegion &vpRgn) const
const SbVec2fgetNormalizedPosition (const SbViewportRegion &vpRgn) const
void setShiftDown (SbBool isDown)
SbBool wasShiftDown (void) const
void setCtrlDown (SbBool isDown)
SbBool wasCtrlDown (void) const
void setAltDown (SbBool isDown)
SbBool wasAltDown (void) const

Static Public Member Functions

static SoType getClassTypeId (void)
static void initClass (void)
static SbBool isKeyPressEvent (const SoEvent *e, Key whichKey)
static SbBool isKeyReleaseEvent (const SoEvent *e, Key whichKey)
static SbBool enumToString (Key enumval, SbString &stringrep)
- Static Public Member Functions inherited from SoButtonEvent
static SoType getClassTypeId (void)
static void initClass (void)
static SbBool enumToString (State enumval, SbString &stringrep)
- Static Public Member Functions inherited from SoEvent
static SoType getClassTypeId (void)
static void initClass (void)

Detailed Description

The SoKeyboardEvent class contains information about keyboard interaction.

When the user presses any keys on the keyboard, these will be translated from a system specific event into a Coin event and sent to the scene graph by using instances of this class.

See also
SoEvent, SoButtonEvent, SoMouseButtonEvent, SoSpaceballButtonEvent
SoEventCallback, SoHandleEventAction

Member Enumeration Documentation

◆ Key

This enum contains all keys detected by Coin.

Constructor & Destructor Documentation

◆ SoKeyboardEvent()

SoKeyboardEvent::SoKeyboardEvent ( void  )


◆ ~SoKeyboardEvent()

SoKeyboardEvent::~SoKeyboardEvent ( )


Member Function Documentation

◆ getTypeId()

SoType SoKeyboardEvent::getTypeId ( void  ) const

Returns the actual type id of an instantiated object.

Reimplemented from SoButtonEvent.

◆ initClass()

void SoKeyboardEvent::initClass ( void  )

Initialize the type information data.

◆ setKey()

void SoKeyboardEvent::setKey ( SoKeyboardEvent::Key  keyarg)

Set the value of the key which the user interacted with.

This method is used from the window specific device classes when translating events to the generic Coin library.

See also

◆ getKey()

SoKeyboardEvent::Key SoKeyboardEvent::getKey ( void  ) const

Returns the value of the key which was pressed or released.

Coin adds a new key value called UNDEFINED. This is needed to support GUI toolkits where it is not possible to find exactly which key is pressed, and/or to support non-US keyboards. The Open Inventor design for this class is flawed, since it assumes everybody uses a US keyboard. We recommend using getPrintableCharacter() to find which key is pressed/released, at least for printable non-alphanumerical characters.

See also
getPrintableCharacter(), getState()
wasShiftDown(), wasCtrlDown(), wasAltDown(), getPosition(), getTime()

◆ setPrintableCharacter()

void SoKeyboardEvent::setPrintableCharacter ( const char  c)

Sets the printable character for this keyboard event. If this method is not called when creating an event, getPrintableCharacter() will convert the SoKeyboardEvent::Key value into a printable character. This conversion does not work on non-US keyboards, so we recommend that you set the printable character using this method instead.

This printable character is cleared each time setKey() is called.

This method is an extension versus the Open Inventor API.

See also

◆ getPrintableCharacter()

char SoKeyboardEvent::getPrintableCharacter ( void  ) const

Return ASCII value which would be generated by the key and modifier combination.

NB! If setPrintableCharacter() hasn't been called, this function does not always work as expected, particularly not on non-US keyboards. The Coin GUI toolkits (SoGtk/SoQt/SoWin/SoXt/Sc21) will set the printable character correctly.

See also
getKey(), wasShiftDown(), wasCtrlDown(), wasAltDown(), setPrintableCharacter()

◆ isKeyPressEvent()

SbBool SoKeyboardEvent::isKeyPressEvent ( const SoEvent e,
SoKeyboardEvent::Key  whichKey 

Convenience method for quickly checking if the given event is a key press on the given key, whichKey.

See also
isKeyReleaseEvent(), isOfType(), getKey(), getState()

◆ isKeyReleaseEvent()

SbBool SoKeyboardEvent::isKeyReleaseEvent ( const SoEvent e,
SoKeyboardEvent::Key  whichKey 

Convenience method for quickly checking if the given event is a key release of the given key, whichKey.

See also
isKeyPressEvent(), isOfType(), getKey(), getState()

◆ enumToString()

SbBool SoKeyboardEvent::enumToString ( Key  enumval,
SbString stringrep 

Converts from an enum value of type SoKeyboardEvent::State to a string containing the enum symbol.

This function is an extension for Coin, and it is not available in the original SGI Open Inventor v2.1 API.

Coin 3.0

The documentation for this class was generated from the following files: