Databases
StackOverflow2013
Postsdbo
POQt push button event using Qt Designer not working: "No such slot QApplication"
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POQt push button event using Qt Designer not working: "No such slot QApplication"
    primarykey
    data
    text
    <p>I've read several articles about push button events in Qt but none seem to solve my problem. I have a simple GUI built with Qt Designer which only contains one button. The run-time error I get is the following:</p> <p>Object::connect: No such slot QApplication::FullSizeR() in CameraWindow.h:25 Object::connect: (sender name: 'FullSize') Object::connect: (receiver name: 'CameraViewer')</p> <p>FullSizeR() is the function I want called when My button is pushed.</p> <p>Here's' how main is defined:</p> <pre><code>int main(int argc, char *argv[]) { // initialize resources, if needed // Q_INIT_RESOURCE(resfile); QApplication app(argc, argv); CameraWindow cw; cw.show(); //app.setActiveWindow(&amp;cw); //cw.getData(); // this paints the window return app.exec(); } </code></pre> <p>And this is how CameraWindow is defined:</p> <pre><code>class CameraWindow : public QDialog{ Q_OBJECT public: bool serverConnected; void getData(); CameraWindow() { widget.setupUi(this); //this calls Qt Designer code //the function bellow produces a run-time error //access the button via widget.FullSize connect(widget.FullSize,SIGNAL(clicked()), qApp, SLOT(FullSizeR())); } QLabel *imgl; virtual ~CameraWindow(); protected slots: void FullSizeR(); private: Ui::CameraWindow widget; }; </code></pre> <p>I've properly included QObject and my function definition under 'slots' This is the definition of FullSizeR:</p> <pre><code>void CameraWindow::FullSizeR() { QMessageBox::information(this,"Button clicked!\n", "Warning"); } </code></pre> <p>The above doesn't seem to be hard to solve. I know its something simple if I only knew Qt a bit better :-/</p> <p>Thanks All</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. This table or related slice is empty.
    1. USroboto1986
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. This table or related slice is empty.
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload