gistfile1.txt

void RenderGUI::startRenderThread(){
    if(renderThread.joinable()){
        renderThread.detach();
        renderThread.~thread();
    }
    scene.allowRendering(true);
    renderThread = std::thread(&RenderGUI::renderScene, this);
    render->SetLabel("Abort");
    render->GetSignal(sfg::Widget::OnLeftClick).Disconnect(renderButtonEvent);
    renderButtonEvent = render->GetSignal(sfg::Widget::OnLeftClick).Connect(std::bind( &RenderGUI::startRenderThread, this));
}