mChangeTextureButton.ClickedSignal().Connect( this, &RefractionEffectExample::OnChangeTexture );
toolBar.AddControl( mChangeTextureButton,
DemoHelper::DEFAULT_VIEW_STYLE.mToolBarButtonPercentage,
mChangeTextureButton.ClickedSignal().Connect( this, &RefractionEffectExample::OnChangeTexture );
toolBar.AddControl( mChangeTextureButton,
DemoHelper::DEFAULT_VIEW_STYLE.mToolBarButtonPercentage,