Passing union instance to native function doesn't populate it

[pizzadox9999]

Hi, I have the following problem and this question: I have this Event union in C from CSFML. Do I have to use the sfEvt in front of every enumeration?
The problem is that in the Event class the EvenType is null after passing a new Event instance to
CsfmlGraphicsLibrary public int sfRenderWindow_pollEvent(Pointer renderWindow, Pointer event);.
I do it by calling getMemory on the Event instance. I would expect that the eventType member of the Event class is Populated with the corresponding eventType from the EvenType Enum. By the way I don't come about it to mention that is a GREAT project.
The other parts like creating the window and moving it are working but the EventHandling is a mystery to me(not in sfml but how I translate it to Java)

The typedef union of Event.h the rest are structs. It should be said that i didn't use the sf in the Java class names. I figured it wouldn't make a different because it didn't also with the RenderWindow class.

I'm thrilled for you'r help. Best regards pizza.

PS: If you need more code i'll upload it to github and I wonder if I have made the same mistak as #288

`typedef union
{
sfEventType type; ///< Type of the event
sfSizeEvent size; ///< Size event parameters
sfKeyEvent key; ///< Key event parameters
sfTextEvent text; ///< Text event parameters
sfMouseMoveEvent mouseMove; ///< Mouse move event parameters
sfMouseButtonEvent mouseButton; ///< Mouse button event parameters
sfMouseWheelEvent mouseWheel; ///< Mouse wheel event parameters (deprecated)
sfMouseWheelScrollEvent mouseWheelScroll; ///< Mouse wheel event parameters
sfJoystickMoveEvent joystickMove; ///< Joystick move event parameters
sfJoystickButtonEvent joystickButton; ///< Joystick button event parameters
sfJoystickConnectEvent joystickConnect; ///< Joystick (dis)connect event parameters
sfTouchEvent touch; ///< Touch events parameters
sfSensorEvent sensor; ///< Sensor event parameters
} sfEvent;

the Event union Java Translation

public class Event extends Union {
public enum EventType { // is the C eventType enum
sfEvtClosed, ///< The window requested to be closed (no data)
sfEvtResized, ///< The window was resized (data in event.size)
sfEvtLostFocus, ///< The window lost the focus (no data)
sfEvtGainedFocus, ///< The window gained the focus (no data)
sfEvtTextEntered, ///< A character was entered (data in event.text)
sfEvtKeyPressed, ///< A key was pressed (data in event.key)
sfEvtKeyReleased, ///< A key was released (data in event.key)
sfEvtMouseWheelMoved, ///< The mouse wheel was scrolled (data in event.mouseWheel) (deprecated)
sfEvtMouseWheelScrolled, ///< The mouse wheel was scrolled (data in event.mouseWheelScroll)
sfEvtMouseButtonPressed, ///< A mouse button was pressed (data in event.mouseButton)
sfEvtMouseButtonReleased, ///< A mouse button was released (data in event.mouseButton)
sfEvtMouseMoved, ///< The mouse cursor moved (data in event.mouseMove)
sfEvtMouseEntered, ///< The mouse cursor entered the area of the window (no data)
sfEvtMouseLeft, ///< The mouse cursor left the area of the window (no data)
sfEvtJoystickButtonPressed, ///< A joystick button was pressed (data in event.joystickButton)
sfEvtJoystickButtonReleased, ///< A joystick button was released (data in event.joystickButton)
sfEvtJoystickMoved, ///< The joystick moved along an axis (data in event.joystickMove)
sfEvtJoystickConnected, ///< A joystick was connected (data in event.joystickConnect)
sfEvtJoystickDisconnected, ///< A joystick was disconnected (data in event.joystickConnect)
sfEvtTouchBegan, ///< A touch event began (data in event.touch)
sfEvtTouchMoved, ///< A touch moved (data in event.touch)
sfEvtTouchEnded, ///< A touch event ended (data in event.touch)
sfEvtSensorChanged, ///< A sensor value changed (data in event.sensor)
sfEvtCount ///< Keep last -- the total number of event types
}

public EventType             type;             ///< Type of the event
public SizeEvent             size;             ///< Size event parameters
public KeyEvent              key;              ///< Key event parameters
public TextEvent             text;             ///< Text event parameters
public MouseMoveEvent        mouseMove;        ///< Mouse move event parameters
public MouseButtonEvent      mouseButton;      ///< Mouse button event parameters
public MouseWheelScrollEvent mouseWheelScroll; ///< Mouse wheel event parameters
public JoystickMoveEvent     joystickMove;     ///< Joystick move event parameters
public JoystickButtonEvent   joystickButton;   ///< Joystick button event parameters
public JoystickConnectEvent  joystickConnect;  ///< Joystick (dis)connect event parameters
public TouchEvent            touch;            ///< Touch events parameters
public SensorEvent           sensor;           ///< Sensor event parameters

public Event() {
	this(JSFML.getJSFML().getCsfmlRuntime()); // is my way of getting the runtime into the Event without passing it at                                                              
	                                                                    // construction time. The call behind it is: Runtime.getRuntime(instance of the  
	                                                                    // CsfmlGraphicsLibrary)
}

public Event(Runtime runtime) {
	super(runtime);
}

}

//the Java GraphicsLib translation

public interface CsfmlGraphicsLibrary {
//RenderWindow Api from RenderWindow.hin Graphics Module
public Pointer sfRenderWindow_create(VideoMode mode, String title, int style, ContextSettings settings);
public void sfRenderWindow_destroy(Pointer renderWindow);
public void sfRenderWindow_close(Pointer renderWindow);
public int sfRenderWindow_isOpen(Pointer renderWindow);
public ContextSettings sfRenderWindow_getSettings(Pointer renderWindow);
public int sfRenderWindow_pollEvent(Pointer renderWindow, Pointer event);
public int sfRenderWindow_waitEvent(Pointer renderWindow, Pointer event);
public Vector2i sfRenderWindow_getPosition(Pointer renderWindow);
public void sfRenderWindow_setPosition(Pointer renderWindow, Vector2i position);
public Vector2u sfRenderWindow_getSize(Pointer renderWindow);
public void sfRenderWindow_setSize(Pointer renderWindow, Vector2u size);
public void sfRenderWindow_setTitle(Pointer renderWindow, String title);
}`

output from console if I log the "returned" object from the said function
Event {
type = - null -
size = - null -
key = - null -
text = - null -
mouseMove = - null -
mouseButton = - null -
mouseWheelScroll = - null -
joystickMove = - null -
joystickButton = - null -
joystickConnect = - null -
touch = - null -
sensor = - null -
}