LTDataRef Class Reference

Represents a dataRef and covers late binding. More...

#include <LTAPI.h>

Public Member Functions
	LTDataRef (std::string _sDataRef)
	Constructor, set the dataRef's name.
bool	needsInit () const
bool	isValid ()
	Found the dataRef and it contains formats we can work with?
bool	FindDataRef ()
	Finds the dataRef (and would try again and again, no matter what bValid says)
XPLMDataTypeID	getDataRefTypes () const
	Get types supported by the dataRef.
bool	hasInt () const
	Is int a supported dataRef type?
bool	hasFloat () const
	Is float a supported dataRef type?
int	getInt ()
	Get dataRef's integer value. Silently returns 0 if dataRef doesn't exist.
float	getFloat ()
	Get dataRef's float value. Silently returns 0.0f if dataRef doesn't exist.
bool	getBool ()
	Gets dataRef's integer value and returns if it is not zero.
int	getData (void *pOut, int inOffset, int inMaxBytes)
	Gets dataRef's binary data.
void	set (int i)
	Writes an integer value to the dataRef.
void	set (float f)
	Writes a float vlue to the dataRef.

Static Public Attributes
static constexpr XPLMDataTypeID	usefulTypes
	Defines which types to work with to become valid

Protected Attributes
std::string	sDataRef
	dataRef name, passed in via constructor
XPLMDataRef	dataRef = NULL
	dataRef identifier returned by X-Plane
XPLMDataTypeID	dataTypes = xplmType_Unknown
	supported data types
bool	bValid = true
	does this object have a valid binding to a dataRef already?

Detailed Description

Represents a dataRef and covers late binding.

Late binding is important: We read another plugin's dataRefs. The other plugin (here: LiveTraffic) needs to register the dataRefs first before we can find them. So we would potentially fail if we search for them during startup (like when declaring statically). With this wrapper we still can do static declaration because the actual call to XPLMFindDataRef happens only the first time we actually access it.

Constructor & Destructor Documentation

LTDataRef()

LTDataRef::LTDataRef

(

std::string

_sDataRef

)

Constructor, set the dataRef's name.

Member Function Documentation

FindDataRef()

bool LTDataRef::FindDataRef

(

)

Finds the dataRef (and would try again and again, no matter what bValid says)

getBool()

bool LTDataRef::getBool ( )

inline

Gets dataRef's integer value and returns if it is not zero.

getData()

int LTDataRef::getData	(	void *	pOut,
		int	inOffset,
		int	inMaxBytes )

Gets dataRef's binary data.

getDataRefTypes()

XPLMDataTypeID LTDataRef::getDataRefTypes ( ) const

inline

Get types supported by the dataRef.

getFloat()

float LTDataRef::getFloat

(

)

Get dataRef's float value. Silently returns 0.0f if dataRef doesn't exist.

getInt()

int LTDataRef::getInt

(

)

Get dataRef's integer value. Silently returns 0 if dataRef doesn't exist.

hasFloat()

bool LTDataRef::hasFloat ( ) const

inline

Is float a supported dataRef type?

hasInt()

bool LTDataRef::hasInt ( ) const

inline

Is int a supported dataRef type?

isValid()

bool LTDataRef::isValid

(

)

Found the dataRef and it contains formats we can work with?

needsInit()

bool LTDataRef::needsInit ( ) const

inline

set() [1/2]

void LTDataRef::set

(

float

f

)

Writes a float vlue to the dataRef.

set() [2/2]

void LTDataRef::set

(

int

i

)

Writes an integer value to the dataRef.

Member Data Documentation

bValid

bool LTDataRef::bValid = true

protected

does this object have a valid binding to a dataRef already?

dataRef

XPLMDataRef LTDataRef::dataRef = NULL

protected

dataRef identifier returned by X-Plane

dataTypes

XPLMDataTypeID LTDataRef::dataTypes = xplmType_Unknown

protected

supported data types

sDataRef

std::string LTDataRef::sDataRef

protected

dataRef name, passed in via constructor

usefulTypes

XPLMDataTypeID LTDataRef::usefulTypes

staticconstexpr

Initial value:

=
            xplmType_Int | xplmType_Float | xplmType_Data

Defines which types to work with to become valid

---

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

• LTAPI.h