Java 类org.lwjgl.glfw.GLFWMonitorCallback 实例源码

/**
 * This function sets the monitor configuration callback, or removes the currently set callback. This is called when
 * a monitor is connected to or disconnected from the system.
 *
 * @param callback The new callback, or {@code null} to remove the currently set callback.
 *
 * @return The previously set callback, or {@code null} if no callback was set or the library had not been
 * initialized.
 */
public static IMonitorCallback setCallback(IMonitorCallback callback)
{
    IMonitorCallback previousCallback = monitorCallback;

    if (callback == null)
        callback = (monitor, event) ->
        {
        };

    monitorCallback = callback;

    if (glfwMonitorCallback != null)
        glfwMonitorCallback.free();

    glfwMonitorCallback = GLFWMonitorCallback.create((monitor, event) ->
            monitorCallback.invoke(registeredMonitors.get(monitor), event)
    );

    glfwSetMonitorCallback(glfwMonitorCallback);
    return previousCallback;
}