using cut(), copy(), paste()

[jpn]

Let's say you have a class called Window which contains those line edits.

You would begin with declaring a new custom slot:

class Window : public WhatEver
{
    Q_OBJECT // <---
public:
    [...]
 
private slots:
    void copy(); // <---
};

class Window : public WhatEver
{
    Q_OBJECT // <---
public:
    [...]

private slots:
    void copy(); // <---
};

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Then, instead of connecting to each line edit's copy(), you would connect to this custom slot we declared above:

connect(action_Copy,SIGNAL(triggered()),this,SLOT(copy()));

connect(action_Copy,SIGNAL(triggered()),this,SLOT(copy()));

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Finally, you would implement the custom slot. More or less something like this:

void Window::copy()
{
    // get the last child widget which has focus and
    // try to cast it as line edit
    QLineEdit* lineEdit = dynamic_cast<QLineEdit*>(focusWidget());
    if (lineEdit)
    {
        // it was a line edit, perform copy
        lineEdit->copy();
    }
}

void Window::copy()
{
    // get the last child widget which has focus and
    // try to cast it as line edit
    QLineEdit* lineEdit = dynamic_cast<QLineEdit*>(focusWidget());
    if (lineEdit)
    {
        // it was a line edit, perform copy
        lineEdit->copy();
    }
}

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