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POC++ Qt signal and slot not firing
 

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    <p>I am having difficulty in my Qt program with connecting button signals to my slots. My code is:</p> <p>Main.cpp</p> <pre><code>#include &lt;QtGui/QApplication&gt; #include "MainWidget.h" int main(int argc, char *argv[]) { QApplication app(argc, argv); MainWidget mainWidget; mainWidget.show(); return app.exec(); } </code></pre> <p>MainWidget.h</p> <pre><code>#ifndef MAINWIDGET_H #define MAINWIDGET_H #include &lt;QWidget&gt; class MainWidget : public QWidget { public: MainWidget(); public slots: void bAdvice_clicked(); void bWeather_clicked(); void bNextMeeting_clicked(); void bQuit_clicked(); }; #endif // MAINWIDGET_H </code></pre> <p>MainWidget.cpp</p> <pre><code>#include "MainWidget.h" #include &lt;QMessageBox&gt; #include &lt;QPushButton&gt; #include &lt;QTextEdit&gt; #include &lt;QVBoxLayout&gt; MainWidget::MainWidget() { QLayout *layout = new QVBoxLayout(); this-&gt;setLayout(layout); QTextEdit *message = new QTextEdit(); layout-&gt;addWidget(message); QPushButton *bAdvice = new QPushButton("Advice"); connect(bAdvice, SIGNAL(clicked()), this, SLOT(bAdvice_clicked())); layout-&gt;addWidget(bAdvice); QPushButton *bWeather = new QPushButton("Weather"); connect(bWeather, SIGNAL(clicked()), this, SLOT(bWeather_clicked())); layout-&gt;addWidget(bWeather); QPushButton *bNextMeeting = new QPushButton("Next Meeting"); connect(bNextMeeting, SIGNAL(clicked()), this, SLOT(bNextMeeting_clicked())); layout-&gt;addWidget(bNextMeeting); QPushButton *bQuit = new QPushButton("Quit"); connect(bQuit, SIGNAL(clicked()), this, SLOT(bQuit_clicked())); layout-&gt;addWidget(bQuit); } void MainWidget::bAdvice_clicked() { } void MainWidget::bWeather_clicked() { } void MainWidget::bNextMeeting_clicked() { QMessageBox::information(this, "Next Meeting", "Today", QMessageBox::Ok); } void MainWidget::bQuit_clicked() { this-&gt;close(); } </code></pre> <p>The program outputs the following:</p> <pre><code>Starting C:\Users\Sameer\Documents\PartAQuestion2\debug\PartAQuestion2.exe... Object::connect: No such slot QWidget::bAdvice_clicked() in MainWidget.cpp:16 Object::connect: No such slot QWidget::bWeather_clicked() in MainWidget.cpp:20 Object::connect: No such slot QWidget::bNextMeeting_clicked() in MainWidget.cpp:24 Object::connect: No such slot QWidget::bQuit_clicked() in MainWidget.cpp:28 C:\Users\Sameer\Documents\PartAQuestion2\debug\PartAQuestion2.exe exited with code 0 </code></pre> <p>The code seems right, no compiler warnings. Just this output at runtime. But it looks like I hooked the signals and slots up correctly.</p>
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