public void SetTransparent(bool transparent)
{
this.isTransparent = transparent;
SetCameraBackground(transparent);
uniWin.EnableTransparent(transparent);
// 少しサイズを変更して戻してみる
Vector2 size = uniWin.GetSize();
uniWin.SetSize(size - Vector2.one);
uniWin.SetSize(size);
UpdateFocusable();
}