自学教程：C++ val_data函数代码示例

value _ofxOscMessage_getRemoteIp(value a) {	ofxOscMessage* oscMessage = (ofxOscMessage*) val_data(a);	return alloc_string(oscMessage->getRemoteIp().c_str());}

	int lime_cairo_font_options_get_hint_metrics (value handle) {				return cairo_font_options_get_hint_metrics ((cairo_font_options_t*)val_data (handle));			}

	int lime_cairo_font_options_get_subpixel_order (value handle) {				return cairo_font_options_get_subpixel_order ((cairo_font_options_t*)val_data (handle));			}

	void lime_cairo_fill_extents (value handle, double x1, double y1, double x2, double y2) {				cairo_fill_extents ((cairo_t*)val_data (handle), &x1, &y1, &x2, &y2);			}

	int lime_cairo_font_face_status (value handle) {				return cairo_font_face_status ((cairo_font_face_t*)val_data (handle));			}

	void lime_cairo_copy_page (value handle) {				cairo_copy_page ((cairo_t*)val_data (handle));			}

	void lime_cairo_curve_to (value handle, double x1, double y1, double x2, double y2, double x3, double y3) {				cairo_curve_to ((cairo_t*)val_data (handle), x1, y1, x2, y2, x3, y3);			}

void delete_ofxOscMessage(value a) {	ofxOscMessage* oscMessage = (ofxOscMessage*) val_data(a);	delete oscMessage;}

void _ofxOscMessage_setRemoteEndpoint(value a,value b,value c) {	ofxOscMessage* oscMessage = (ofxOscMessage*) val_data(a);	oscMessage->setRemoteEndpoint(val_string(b),val_int(c));}

value _ofxOscMessage_getArgAsString(value a,value b) {	ofxOscMessage* oscMessage = (ofxOscMessage*) val_data(a);	return alloc_string(oscMessage->getArgAsString(val_int(b)).c_str());}

void _ofxOscMessage_setAddress(value a,value b) {	ofxOscMessage* oscMessage = (ofxOscMessage*) val_data(a);	oscMessage->setAddress(val_string(b));}

value _ofxOscMessage_getArgAsFloat(value a,value b) {	ofxOscMessage* oscMessage = (ofxOscMessage*) val_data(a);	return alloc_float(oscMessage->getArgAsFloat(val_int(b)));}

value _ofxOscMessage_getNumArgs(value a) {	ofxOscMessage* oscMessage = (ofxOscMessage*) val_data(a);	return alloc_int(oscMessage->getNumArgs());}

value _ofxOscMessage_getRemotePort(value a) {	ofxOscMessage* oscMessage = (ofxOscMessage*) val_data(a);	return alloc_int(oscMessage->getRemotePort());}

/**	module_code_size : 'module -> int	<doc>return the codesize of the module</doc>**/static value module_code_size( value mv ) {	val_check_kind(mv,neko_kind_module);	return alloc_int( ((neko_module*)val_data(mv))->codesize );}

void _ofxOscMessage_addIntArg(value a,value b) {	ofxOscMessage* oscMessage = (ofxOscMessage*) val_data(a);	oscMessage->addIntArg(val_int(b));}

	void lime_cairo_close_path (value handle) {				cairo_close_path ((cairo_t*)val_data (handle));			}

void _ofxOscMessage_addFloatArg(value a,value b) {	ofxOscMessage* oscMessage = (ofxOscMessage*) val_data(a);	oscMessage->addFloatArg(val_float(b));}

	value lime_cairo_create (value surface) {				cairo_t* cairo = cairo_create ((cairo_surface_t*)val_data (surface));		return CFFIPointer (cairo, gc_cairo);			}

/**	module_exec : 'module -> any	<doc>Execute the module, return the calculated value</doc>**/static value module_exec( value mv ) {	neko_module *m;	val_check_kind(mv,neko_kind_module);	m = (neko_module*)val_data(mv);	return neko_vm_execute(neko_vm_current(),m);}

	void lime_cairo_fill (value handle) {				cairo_fill ((cairo_t*)val_data (handle));			}

/**	module_name : 'module -> string	<doc>Return the module name</doc>**/static value module_name( value mv ) {	neko_module *m;	val_check_kind(mv,neko_kind_module);	m = (neko_module*)val_data(mv);	return m->name;}

	void lime_cairo_fill_preserve (value handle) {				cairo_fill_preserve ((cairo_t*)val_data (handle));			}

/**	module_exports : 'module -> object	<doc>Return the module export table</doc>**/static value module_exports( value mv ) {	neko_module *m;	val_check_kind(mv,neko_kind_module);	m = (neko_module*)val_data(mv);	return m->exports;}

	int lime_cairo_font_options_get_antialias (value handle) {				return cairo_font_options_get_antialias ((cairo_font_options_t*)val_data (handle));			}

/**	module_loader : 'module -> object	<doc>Return the module loader</doc>**/static value module_loader( value mv ) {	neko_module *m;	val_check_kind(mv,neko_kind_module);	m = (neko_module*)val_data(mv);	return m->loader;}

	int lime_cairo_font_options_get_hint_style (value handle) {				return cairo_font_options_get_hint_style ((cairo_font_options_t*)val_data (handle));			}

/**	module_nglobals : 'module -> int	<doc>Return the number of globals for this module</doc>**/static value module_nglobals( value mv ) {	neko_module *m;	val_check_kind(mv,neko_kind_module);	m = (neko_module*)val_data(mv);	return alloc_int(m->nglobals);}

	void lime_cairo_font_options_set_antialias (value handle, int v) {				cairo_font_options_set_antialias ((cairo_font_options_t*)val_data (handle), (cairo_antialias_t)v);			}

value _ofxOscReceiver_getNextMessage(value a,value b) {	ofxOscReceiver* oscReceiver = (ofxOscReceiver*) val_data(a);	ofxOscMessage* oscMessage = (ofxOscMessage*) val_data(b);	return alloc_bool(oscReceiver->getNextMessage(oscMessage));}