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POHow do I run a command from a button press Qt - C++ probably
 

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  1. POHow do I run a command from a button press Qt - C++ probably
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    <p>As I am trying to get a program finished, and I would like a graphical interface for it, I am trying to VERY QUICKLY rebuild a QT app provided as an example by QT Creator. Here are what I hope are the relevant bits:</p> <p><code>arrowpad.h</code>:</p> <pre><code>#ifndef ARROWPAD_H #define ARROWPAD_H #include &lt;QWidget&gt; QT_BEGIN_NAMESPACE class QPushButton; QT_END_NAMESPACE //! [0] class ArrowPad : public QWidget //! [0] //! [1] { //! [1] //! [2] Q_OBJECT //! [2] public: ArrowPad(QWidget *parent = 0); private: QPushButton *upButton; QPushButton *downButton; QPushButton *leftButton; QPushButton *rightButton; }; #endif </code></pre> <p><code>arrowpad.cpp</code>:</p> <pre><code>#include &lt;QtGui&gt; #include "arrowpad.h" ArrowPad::ArrowPad(QWidget *parent) : QWidget(parent) { //! [0] upButton = new QPushButton(tr("&amp;Up")); //! [0] //! [1] downButton = new QPushButton(tr("&amp;Down")); //! [1] //! [2] leftButton = new QPushButton(tr("&amp;Left")); //! [2] //! [3] rightButton = new QPushButton(tr("&amp;Right")); //! [3] QGridLayout *mainLayout = new QGridLayout; mainLayout-&gt;addWidget(upButton, 0, 1); mainLayout-&gt;addWidget(leftButton, 1, 0); mainLayout-&gt;addWidget(rightButton, 1, 2); mainLayout-&gt;addWidget(downButton, 2, 1); setLayout(mainLayout); } </code></pre> <p>How can I get it to run a command when I press a button? I have found <a href="https://stackoverflow.com/questions/3227767/how-to-run-a-system-command-in-qt">this</a>, but I don't know how to intergrate with the qpushbutton thing, otherwsie it just thinks it is a string of text... <strong>ANY COMMANDS MUST WORK IN LINUX - FEDORA 19, as that is what I am running it on.</strong></p> <p>Here is what the current result is - the button names I do not think are specified as <code>(tr("&amp;Up"));</code> in the above <code>.cpp</code> script by the way.</p> <p><img src="https://i.stack.imgur.com/3jJr9.png" alt="qt app"></p>
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