Qt-为什么要添加“&”到字符串？ [英] Qt - Why add '&' to the string?
问题描述
QPushButton *quitButton = new QPushButton("&Quit");
为什么要将& 添加到退出？删除& ，似乎代码的行为相同。
Why add a & to the Quit? Removing & and it seems the code behaves the same.
推荐答案
<&> && 使按钮响应特定的按键组合。对于您而言，如果您按 ALT + Q ，它将强制按下按钮。
The ampersand makes the button respond to a particular key-combination. In your case, if you press ALT + Q it will force the button to be pushed.
来自< a href = http://qt-project.org/doc/qt-4.8/qpushbutton.html> Qt
QPushButton小部件提供了
The QPushButton widget provides a command button.
按钮或命令按钮也许是任何图形用户界面中最常用的窗口小部件。按下（单击）按钮以命令计算机执行某些操作或回答问题。典型的按钮为确定，应用，取消，关闭，是，否和帮助。
The push button, or command button, is perhaps the most commonly used widget in any graphical user interface. Push (click) a button to command the computer to perform some action, or to answer a question. Typical buttons are OK, Apply, Cancel, Close, Yes, No and Help.
命令按钮为矩形，通常显示描述其动作的文本标签。可以通过在文本中的首选字符前面加上&符号来指定快捷键。例如：
A command button is rectangular and typically displays a text label describing its action. A shortcut key can be specified by preceding the preferred character with an ampersand in the text. For example:
QPushButton *button = new QPushButton("&Download", this);
在此示例中，快捷键为Alt + D。有关详细信息，请参见QShortcut文档（要显示实际的与号，请使用&&）。
In this example the shortcut is Alt+D. See the QShortcut documentation for details (to display an actual ampersand, use '&&').
这篇关于Qt-为什么要添加“&”到字符串？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
