C++ 在SFML事件中发送鼠标位置

我一直在研究正确的语法，以便将mouseX和mouseY位置传递给我的类

我的尝试是这样的：

 // Start the game loop
 while (window.isOpen())
 {
     // Process events
     sf::Event event;
     while (window.pollEvent(event))
     {
         // Close window : exit
         if (event.type == sf::Event::Closed) {
             window.close();
         }
     }

     // Clear screen
     window.clear();

     // Draw the sprite
     window.draw(sprite);
     window.draw(lsprite);

     if(btn_quit.IsIn(sf::Event::MouseMoveEvent::x,sf::Event::MouseMoveEvent::y){
         btn_quit.RenderImg(window,"button_on.png");
     } else {
         btn_quit.RenderImg(window,"button.png");
     }
  ///rest of the code not relevant to this issue

// Start the game loop
while (window.isOpen())
{
    // Process events
    sf::Event event;
    while (window.pollEvent(event))
    {
        // Close window : exit
        if (event.type == sf::Event::Closed) {
            window.close();
        }
        else if (event.type == sf::Event::MouseMove)
        {
            if(btn_quit.IsIn(event.MouseMoveEvent.x, event.MouseMoveEvent.x){
                btn_quit.RenderImg(window,"button_on.png");
            } else {
                btn_quit.RenderImg(window,"button.png");
            }
        }
    }

    // Clear screen
    window.clear();

    // Draw the sprite
    window.draw(sprite);
    window.draw(lsprite);

if(event.type == sf::Event::MouseMoved) 
{
    // do something with event.mouseMove.x and event.mouseMove.y
}

这是在我的班上：

bool IsIn( int mouseX, int mouseY )
{
    if (((mouseX > m_x) && (mouseX < m_x + m_w)) 
    && ((mouseY > m_y) && (mouseY < m_y + m_h ) ) ) {
        return true;
    } else {
        return false;
    }
}

bool-IsIn（int-mouseX，int-mouseY）
{
如果（（mouseX>mux）和&（mouseXm_-y）和&（mouseY

我在输入x和y时一直遇到一个错误，它是这样说的：

错误C2597:非法引用非静态成员'sf:：Event:：MouseMoveEvent:：x'

---

错误C2597:非法引用非静态成员“sf:：Event:：MouseMoveEvent:：y”

您试图静态访问结构的非静态成员字段。你不能那样做。试着这样做：

 // Start the game loop
 while (window.isOpen())
 {
     // Process events
     sf::Event event;
     while (window.pollEvent(event))
     {
         // Close window : exit
         if (event.type == sf::Event::Closed) {
             window.close();
         }
     }

     // Clear screen
     window.clear();

     // Draw the sprite
     window.draw(sprite);
     window.draw(lsprite);

     if(btn_quit.IsIn(sf::Event::MouseMoveEvent::x,sf::Event::MouseMoveEvent::y){
         btn_quit.RenderImg(window,"button_on.png");
     } else {
         btn_quit.RenderImg(window,"button.png");
     }
  ///rest of the code not relevant to this issue

// Start the game loop
while (window.isOpen())
{
    // Process events
    sf::Event event;
    while (window.pollEvent(event))
    {
        // Close window : exit
        if (event.type == sf::Event::Closed) {
            window.close();
        }
        else if (event.type == sf::Event::MouseMove)
        {
            if(btn_quit.IsIn(event.MouseMoveEvent.x, event.MouseMoveEvent.x){
                btn_quit.RenderImg(window,"button_on.png");
            } else {
                btn_quit.RenderImg(window,"button.png");
            }
        }
    }

    // Clear screen
    window.clear();

    // Draw the sprite
    window.draw(sprite);
    window.draw(lsprite);

if(event.type == sf::Event::MouseMoved) 
{
    // do something with event.mouseMove.x and event.mouseMove.y
}

---

您正在尝试静态访问结构的非静态成员字段。你不能那样做。试着这样做：

 // Start the game loop
 while (window.isOpen())
 {
     // Process events
     sf::Event event;
     while (window.pollEvent(event))
     {
         // Close window : exit
         if (event.type == sf::Event::Closed) {
             window.close();
         }
     }

     // Clear screen
     window.clear();

     // Draw the sprite
     window.draw(sprite);
     window.draw(lsprite);

     if(btn_quit.IsIn(sf::Event::MouseMoveEvent::x,sf::Event::MouseMoveEvent::y){
         btn_quit.RenderImg(window,"button_on.png");
     } else {
         btn_quit.RenderImg(window,"button.png");
     }
  ///rest of the code not relevant to this issue

// Start the game loop
while (window.isOpen())
{
    // Process events
    sf::Event event;
    while (window.pollEvent(event))
    {
        // Close window : exit
        if (event.type == sf::Event::Closed) {
            window.close();
        }
        else if (event.type == sf::Event::MouseMove)
        {
            if(btn_quit.IsIn(event.MouseMoveEvent.x, event.MouseMoveEvent.x){
                btn_quit.RenderImg(window,"button_on.png");
            } else {
                btn_quit.RenderImg(window,"button.png");
            }
        }
    }

    // Clear screen
    window.clear();

    // Draw the sprite
    window.draw(sprite);
    window.draw(lsprite);

if(event.type == sf::Event::MouseMoved) 
{
    // do something with event.mouseMove.x and event.mouseMove.y
}

---

你目前所做的有几个方面是不正确的。首先，您不能像那样访问静态数据x和y，因为它根本不存在

其次，SFML事件本质上是联合，这意味着它们的实际内容将取决于您试图处理的事件类型。不能为每个事件获取x和y值，至少不能从事件对象获取。如果您有鼠标事件，您将执行以下操作：

 // Start the game loop
 while (window.isOpen())
 {
     // Process events
     sf::Event event;
     while (window.pollEvent(event))
     {
         // Close window : exit
         if (event.type == sf::Event::Closed) {
             window.close();
         }
     }

     // Clear screen
     window.clear();

     // Draw the sprite
     window.draw(sprite);
     window.draw(lsprite);

     if(btn_quit.IsIn(sf::Event::MouseMoveEvent::x,sf::Event::MouseMoveEvent::y){
         btn_quit.RenderImg(window,"button_on.png");
     } else {
         btn_quit.RenderImg(window,"button.png");
     }
  ///rest of the code not relevant to this issue

// Start the game loop
while (window.isOpen())
{
    // Process events
    sf::Event event;
    while (window.pollEvent(event))
    {
        // Close window : exit
        if (event.type == sf::Event::Closed) {
            window.close();
        }
        else if (event.type == sf::Event::MouseMove)
        {
            if(btn_quit.IsIn(event.MouseMoveEvent.x, event.MouseMoveEvent.x){
                btn_quit.RenderImg(window,"button_on.png");
            } else {
                btn_quit.RenderImg(window,"button.png");
            }
        }
    }

    // Clear screen
    window.clear();

    // Draw the sprite
    window.draw(sprite);
    window.draw(lsprite);

if(event.type == sf::Event::MouseMoved) 
{
    // do something with event.mouseMove.x and event.mouseMove.y
}

或者，如果要在

mouseMoved

事件范围之外执行此操作，则始终可以使用该类。这包含一个

getPosition

方法，该方法将返回一个包含

x

和

y

的二维向量：

sf::Mouse::getPosition(); //Absolute coordinates
sf::Mouse::getPosition(window); //Relative to window

---

你目前所做的有几个方面是不正确的。首先，您不能像那样访问静态数据x和y，因为它根本不存在

其次，SFML事件本质上是联合，这意味着它们的实际内容将取决于您试图处理的事件类型。不能为每个事件获取x和y值，至少不能从事件对象获取。如果您有鼠标事件，您将执行以下操作：

 // Start the game loop
 while (window.isOpen())
 {
     // Process events
     sf::Event event;
     while (window.pollEvent(event))
     {
         // Close window : exit
         if (event.type == sf::Event::Closed) {
             window.close();
         }
     }

     // Clear screen
     window.clear();

     // Draw the sprite
     window.draw(sprite);
     window.draw(lsprite);

     if(btn_quit.IsIn(sf::Event::MouseMoveEvent::x,sf::Event::MouseMoveEvent::y){
         btn_quit.RenderImg(window,"button_on.png");
     } else {
         btn_quit.RenderImg(window,"button.png");
     }
  ///rest of the code not relevant to this issue

// Start the game loop
while (window.isOpen())
{
    // Process events
    sf::Event event;
    while (window.pollEvent(event))
    {
        // Close window : exit
        if (event.type == sf::Event::Closed) {
            window.close();
        }
        else if (event.type == sf::Event::MouseMove)
        {
            if(btn_quit.IsIn(event.MouseMoveEvent.x, event.MouseMoveEvent.x){
                btn_quit.RenderImg(window,"button_on.png");
            } else {
                btn_quit.RenderImg(window,"button.png");
            }
        }
    }

    // Clear screen
    window.clear();

    // Draw the sprite
    window.draw(sprite);
    window.draw(lsprite);

if(event.type == sf::Event::MouseMoved) 
{
    // do something with event.mouseMove.x and event.mouseMove.y
}

或者，如果要在

mouseMoved

事件范围之外执行此操作，则始终可以使用该类。这包含一个

getPosition

方法，该方法将返回一个包含

x

和

y

的二维向量：

sf::Mouse::getPosition(); //Absolute coordinates
sf::Mouse::getPosition(window); //Relative to window

---

嗯。。。就像错误信息所说的那样。您试图像访问静态成员一样访问x和y成员，但显然不是。看起来您应该调用

btn\u quit.IsIn（event.x，event.y）

？嗯。。。就像错误信息所说的那样。您试图像访问静态成员一样访问x和y成员，但它们显然不是。看起来您应该调用

btn\u quit.IsIn（event.x，event.y）

？