c++ - 如何在类里面使用线程？

Question

我正在尝试为我的 OpenGL 项目创建一个加载屏幕，并已阅读该内容以使其正常工作，最好使用线程。我试图用我的线程调用我的函数，但我不断收到这些错误:

error C2064: term does not evaluate to a function taking 3 arguments

IntelliSense: no instance of constructor "std::thread::thread" matches the argument list argument types are: (void (Screen* newScreen, bool activeVisuals, bool activeControls), PlayScreen *, bool, bool)

这是我的代码:

//LoadingScreen
class LoadingScreen
{
    LoadingScreen();
    void LoadNewScreen(Screen* newScreen, bool activeVisuals, bool activeControls);
    void Setup();
};

void LoadingScreen::LoadNewScreen(Screen* newScreen, bool activeVisuals, bool activeControls)
{

}

void LoadingScreen::Setup()
{
    PlayScreen *playScreen = new PlayScreen();
    std::thread first(LoadingScreen::LoadNewScreen,playScreen, true, true);// , playScreen, true, true);

    first.join();
}

//source.cpp
LoadingScreen loadingScreen;
int main()
{
    LoadingScreen loadingScreen = LoadingScreen();
    loadingScreen.Setup();

    return 0;
}

Answer 1

您需要传递一个附加参数，该参数是其成员函数作为第一个参数传递的类的实例。

std::thread first(&LoadingScreen::LoadNewScreen, this, playScreen, true, true);
                                             //  ^^^^ <= instance of LoadingScreen

需要额外的参数，因为这是实际调用 LoadNewScreen 的参数。

this->LoadNewScreen(playScreen, true, true);