tr（“\ 302 \ 261”）在Qt中的含义是什么？

2024-07-13 09:26| 来源: 网络整理| 查看: 265

我正在关注http://doc.qt.io/qt-5/qtwidgets-widgets-calculator-example.html的Qt计算器示例。我遇到了下面的代码。

for (int i = 0; i < NumDigitButtons; ++i) { digitButtons[i] = createButton(QString::number(i), SLOT(digitClicked())); } Button *pointButton = createButton(tr("."), SLOT(pointClicked())); Button *changeSignButton = createButton(tr("\302\261"), SLOT(changeSignClicked())); Button *backspaceButton = createButton(tr("Backspace"), SLOT(backspaceClicked())); Button *clearButton = createButton(tr("Clear"), SLOT(clear())); Button *clearAllButton = createButton(tr("Clear All"), SLOT(clearAll())); Button *clearMemoryButton = createButton(tr("MC"), SLOT(clearMemory())); Button *readMemoryButton = createButton(tr("MR"), SLOT(readMemory())); Button *setMemoryButton = createButton(tr("MS"), SLOT(setMemory())); Button *addToMemoryButton = createButton(tr("M+"), SLOT(addToMemory())); Button *divisionButton = createButton(tr("\303\267"), SLOT(multiplicativeOperatorClicked())); Button *timesButton = createButton(tr("\303\227"), SLOT(multiplicativeOperatorClicked())); Button *minusButton = createButton(tr("-"), SLOT(additiveOperatorClicked())); Button *plusButton = createButton(tr("+"), SLOT(additiveOperatorClicked())); Button *squareRootButton = createButton(tr("Sqrt"), SLOT(unaryOperatorClicked())); Button *powerButton = createButton(tr("x\302\262"), SLOT(unaryOperatorClicked())); Button *reciprocalButton = createButton(tr("1/x"), SLOT(unaryOperatorClicked())); Button *equalButton = createButton(tr("="), SLOT(equalClicked()));

但是，我无法理解tr("\302\261")，tr("\303\267")，tr("x\302\262")mean来自下面的行。

Button *changeSignButton = createButton(tr("\302\261"), SLOT(changeSignClicked())); Button *divisionButton = createButton(tr("\303\267"), SLOT(multiplicativeOperatorClicked())); Button *powerButton = createButton(tr("x\302\262"), SLOT(unaryOperatorClicked()));

当我删除\303\267时，我发现÷符号消失了。所以我猜它与分裂按钮有某种关系。

我不知道\ 303 \ 267如何与分裂有关。我搜索了Qt文档页面，一无所获。

我的问题是：

在这个例子中，tr("\302\261")，tr("\303\267")和tr("x\302\262")是什么意思？

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