ICallableInfo Struct Reference

Provides information about the argument count and types, as well as the return type of Function/Procedure-type properties. More...

Inheritance diagram for ICallableInfo:

Collaboration diagram for ICallableInfo:

Detailed Description

Provides information about the argument count and types, as well as the return type of Function/Procedure-type properties.

A callable should be invoked with the parameter types specified in the arguments field, in the order listed.

A Procedure-type Property will not have a return type configured in its Callable info field.

Argument info objects implement the Struct methods internally and are Core type ctStruct.

Public Member Functions
virtual ErrCode INTERFACE_FUNC	getReturnType (CoreType *type)=0
	Gets the return type of the callable function. More...
virtual ErrCode INTERFACE_FUNC	getArguments (IList **argumentInfo)=0
	Gets the list of arguments the callable function/procedure expects. More...
virtual ErrCode INTERFACE_FUNC	isConst (Bool *constFlag)=0
	A flag indicating if function is marked as const. A const function promises not to modify the state of the device or any other objects under the openDAQ instance. More...
Public Member Functions inherited from IBaseObject
virtual ErrCode INTERFACE_FUNC	borrowInterface (const IntfID &intfID, void **obj) const =0
	Returns another interface which is supported by the object without incrementing the reference count. More...
virtual ErrCode INTERFACE_FUNC	dispose ()=0
	Disposes all references held by the object. More...
virtual ErrCode INTERFACE_FUNC	getHashCode (SizeT *hashCode)=0
	Returns hash code of the object. More...
virtual ErrCode INTERFACE_FUNC	equals (IBaseObject *other, Bool *equal) const =0
	Compares object to another object for equality. More...
virtual ErrCode INTERFACE_FUNC	toString (CharPtr *str)=0
	Returns a string representation of the object. More...
Public Member Functions inherited from IUnknown
virtual ErrCode INTERFACE_FUNC	queryInterface (const IntfID &intfID, void **obj)=0
	Returns another interface which is supported by the object and increments the reference count. More...
virtual int INTERFACE_FUNC	addRef ()=0
	Increments the reference count for an interface on an object. More...
virtual int INTERFACE_FUNC	releaseRef ()=0
	Decrements the reference count for an interface on an object. More...

Member Function Documentation

getArguments()

virtual ErrCode INTERFACE_FUNC getArguments ( IList **  argumentInfo )

pure virtual

Gets the list of arguments the callable function/procedure expects.

Parameters

[out]

argumentInfo

the list of arguments of type ArgumentInfo.

getReturnType()

virtual ErrCode INTERFACE_FUNC getReturnType ( CoreType *  type )

pure virtual

Gets the return type of the callable function.

Parameters

[out]

type

The return type of the callable.

isConst()

virtual ErrCode INTERFACE_FUNC isConst ( Bool *  constFlag )

pure virtual

A flag indicating if function is marked as const. A const function promises not to modify the state of the device or any other objects under the openDAQ instance.

Parameters

[out]

constFlag

a flag indicating if the function is marked as const or not.