Module for Signals and Slots

Basic signal handling. More...

Modules
	Signals
	Signals.
SignalObject
GWENHYWFAR_API GWEN_SIGNAL *	GWEN_SignalObject_FindSignal (const GWEN_SIGNALOBJECT *so, const char *name, const char *typeOfArg1, const char *typeOfArg2)
GWENHYWFAR_API GWEN_SLOT *	GWEN_SignalObject_FindSlot (const GWEN_SIGNALOBJECT *so, const char *name, const char *typeOfArg1, const char *typeOfArg2)
GWENHYWFAR_API void	GWEN_SignalObject_free (GWEN_SIGNALOBJECT *so)
GWENHYWFAR_API GWEN_SIGNALOBJECT *	GWEN_SignalObject_new ()
GWENHYWFAR_API void	GWEN_SignalObject_RemoveForDerivedType (GWEN_SIGNALOBJECT *so, const char *derivedType)
Typedefs
typedef GWEN_SIGNAL	GWEN_SIGNAL
typedef GWEN_SIGNALOBJECT	GWEN_SIGNALOBJECT
typedef GWEN_SLOT	GWEN_SLOT
typedef int(*)	GWEN_SLOT_FUNCTION (GWEN_SLOT *slot, void *userData, void *pArg1, void *pArg2, int iArg3, int iArg4)

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Detailed Description

Basic signal handling.

This module introduces a simple signal-slot framework. Signals have a fixed list of arguments:

• a void* pointer
• 1st integer argument
• 2nd integer argument

The actual type of the void pointer is defined by the signal and corresponding slot(s): Gwen checks the type at runtime and refuses to connect signals with slots which define this pointer to be of a different type. Any signal can be connected to any number of matching slots.

The central object in this framework is GWEN_SIGNALOBJECT. It holds a list of signals and slots for a given object.

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Typedef Documentation

typedef struct GWEN_SIGNAL GWEN_SIGNAL

typedef struct GWEN_SIGNALOBJECT GWEN_SIGNALOBJECT

typedef struct GWEN_SLOT GWEN_SLOT

typedef int(*) GWEN_SLOT_FUNCTION(GWEN_SLOT *slot, void *userData, void *pArg1, void *pArg2, int iArg3, int iArg4)

This is the prototype for the slot function. If there is a problem in the function it should return 1, otherwise 0.

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Function Documentation

GWENHYWFAR_API GWEN_SIGNAL* GWEN_SignalObject_FindSignal	(	const GWEN_SIGNALOBJECT *	so,
		const char *	name,
		const char *	typeOfArg1,
		const char *	typeOfArg2
	)

GWENHYWFAR_API GWEN_SLOT* GWEN_SignalObject_FindSlot	(	const GWEN_SIGNALOBJECT *	so,
		const char *	name,
		const char *	typeOfArg1,
		const char *	typeOfArg2
	)

GWENHYWFAR_API void GWEN_SignalObject_free

(

GWEN_SIGNALOBJECT *

so

)

GWENHYWFAR_API GWEN_SIGNALOBJECT* GWEN_SignalObject_new

(

)

GWENHYWFAR_API void GWEN_SignalObject_RemoveForDerivedType	(	GWEN_SIGNALOBJECT *	so,
		const char *	derivedType
	)

This function removes all signals and slots for the given derived type. This function can be used from within the FREEDATA function of the GWEN_INHERIT framework.

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