Question

我正在使用SFML创建一个表单，并且我被困在一个地方，在我点击一个矩形然后我得到输入。出于测试目的，我使用cout来打印我输入的内容。这是代码片段。 event是sf :: Event的对象，rect1是矩形。在if语句中，我指定了单击的区域。现在我想在点击矩形后打印出我键入的内容。请帮忙，因为我已经超过6小时了。

...

switch (event.type){

   case Event::Closed:
      window.close();
            break;
        case Event::MouseMoved:
            //cout << event.mouseMove.x << ", " << event.mouseMove.y << endl;
            break;
        case Event::MouseButtonReleased:
            if (event.key.code==Mouse::Left
                && Mouse::getPosition(window).x >= rect1.getPosition().x
                && Mouse::getPosition(window).x <= rect1.getPosition().x + rect1.getSize().x
                && Mouse::getPosition(window).y >= rect1.getPosition().y
                && Mouse::getPosition(window).y <= rect1.getPosition().y + rect1.getSize().y) 
            {


                  //what I want to do is here I guess. 


            }
            break;


        }

Answer 1

我假设你正在制作一个文本框。

按下该框时，您应切换一个布尔值，显示该框是否被选中。然后，在另一个事件中，您应该检查是否输入了任何文本（TextEntered事件）。如果有，则应检查是否选中了文本框，如果是，则插入字符。

以下是一个例子：

switch (event.type){

    case Event::Closed:
        window.close();
        break;
    case Event::MouseMoved:
        //cout << event.mouseMove.x << ", " << event.mouseMove.y << endl;
        break;
    case Event::MouseButtonReleased:
        if (event.key.code==Mouse::Left
            && Mouse::getPosition(window).x >= rect1.getPosition().x
            && Mouse::getPosition(window).x <= rect1.getPosition().x + rect1.getSize().x
            && Mouse::getPosition(window).y >= rect1.getPosition().y
            && Mouse::getPosition(window).y <= rect1.getPosition().y + rect1.getSize().y) 
        {
              // The box has been selected
              // Toggle the boolean
              isSelected = !isSelected;
        }
        break;
    case Event::TextEntered:
        if ( isSelected )
        {
            if ( event.Text.Unicode < 0x80 ) // it's printable
            {
                // Here is the character that was typed
                char keyString = (char) event.Text.Unicode;
                // Here you should add the character to perhaps a string containing the total text in the text box
            }
        }
}

这可以让您捕获选中文本框时输入的字符。

单击鼠标后获取输入SFML

1 个答案: