public void SetCloseCallback(ULCloseCallback callback, IntPtr userData = default)
{
if (callback is not null)
{
ULCloseCallback__PInvoke__ callback__PInvoke__ = (user_data, window) => callback(user_data, new ULWindow(window));
if (handles[0].IsAllocated)
{
handles[0].Free();
}
handles[0] = GCHandle.Alloc(callback__PInvoke__, GCHandleType.Normal);
AppCoreMethods.ulWindowSetCloseCallback(Ptr, callback__PInvoke__, userData);
}
else
{
if (handles[0].IsAllocated)
{
handles[0].Free();
}
handles[0] = default;
AppCoreMethods.ulWindowSetCloseCallback(Ptr, null, userData);
}
}
public static extern void ulWindowSetCloseCallback(IntPtr window, ULCloseCallback__PInvoke__ callback, IntPtr user_data);
