如何在Qt中使用两个键修饰符设置3键序列快捷方式? [英] How to set 3-key sequence shortcut with two key modifiers in Qt?

问题描述

我一直试图将快捷方式设置为 Ctrl + Shift + C .

I have been trying to set a shortcut as Ctrl + Shift +C.

我尝试了以下方法:

QAction *generalControlAction = new QAction(this);
generalControlAction->setShortcut(QKeySequence("Ctrl+Shift+c"));
connect(generalControlAction, &QAction::triggered, this, &iBexWorkstation::onGeneralConfiguration);

QShortcut *generalControlShortcut = new QShortcut(QKeySequence("Ctrl+Shift+C"), this);
connect(generalControlShortcut, &QShortcut::activated, this, &iBexWorkstation::onGeneralConfiguration);

他们没有工作.当我按下 Ctrl + Shift + C 时，什么都不会触发.

They didn't work. Nothing is triggered when I press Ctrl + Shift +C.

是否不可能在Qt中使用两个修饰符设置快捷方式?

Is it impossible to set a shortcut with two modifiers in Qt?

推荐答案

我写了一个最小的完整示例.在我看来，这对您的描述很有用.可能是，我添加了一些您不支持的内容. (因此，首选最小，完整，可验证的样本".)

I wrote a minimal, complete sample. It worked in my case how you described it. May be, I added something which you didn't on your side. (That's why "minimal, complete, verifiable samples" are preferred.)

// standard C++ header:
#include <iostream>

// Qt header:
#include <QAction>
#include <QApplication>
#include <QLabel>
#include <QMainWindow>

using namespace std;

int main(int argc, char **argv)
{
  cout << QT_VERSION_STR << endl;
  // main application
#undef qApp // undef macro qApp out of the way
  QApplication qApp(argc, argv);
  // the short cut
  const char *shortCut = "Ctrl+Shift+Q";
  // setup GUI
  QMainWindow qWin;
  QAction qCmdCtrlShiftQ(&qWin);
  qCmdCtrlShiftQ.setShortcut(QKeySequence(shortCut));
  qWin.addAction(&qCmdCtrlShiftQ); // DON'T FORGET THIS.
  QLabel qLbl(
    QString::fromLatin1("Please, press ")
    + QString::fromLatin1(shortCut));
  qLbl.setAlignment(Qt::AlignCenter);
  qWin.setCentralWidget(&qLbl);
  qWin.show();
  // add signal handlers
  QObject::connect(&qCmdCtrlShiftQ, &QAction::triggered,
    [&qLbl, shortCut](bool) {
    qLbl.setText(
      QString::fromLatin1(shortCut)
      + QString::fromLatin1(" pressed."));
  });
  // run application
  return qApp.exec();
}

我怀疑您没有拨打QWidget::addAction().如果我将其注释掉，则它在我的程序中也不再起作用.

I suspect that you didn't call QWidget::addAction(). If I comment it out it does not work anymore in my program also.

在Windows 10(64位)上与VS2013和Qt 5.6一起编译:

Compiled with VS2013 and Qt 5.6 on Windows 10 (64 bit):

此快照是在按Ctrl + Shift + Q后创建的.

This snapshot has been made after pressing Ctrl+Shift+Q.

注意:

此后，我意识到实际的问题是关于"Ctrl + Shift + C"的.可以肯定的是，我检查了一下.上面的示例代码也可以与"Ctrl + Shift + C"一起使用.

I realized afterwards that the actual question was about "Ctrl+Shift+C". To be sure, I checked it. The above sample code works with "Ctrl+Shift+C" as well.

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