Slot parameter for QMetaObject::invokeMethod

column

Playing with QMetaObject::invokeMethod method :

#include "mainwindow.h"
#include "ui_mainwindow.h"

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
}

MainWindow::~MainWindow()
{
    delete ui;
}

void MainWindow::setText( int value)
{
    QString s = QString::number(value);
    ui->textEdit->setText(s);
}





void MainWindow::on_pushButton_clicked()
{
    QGenericArgument genericArg =  Q_ARG(int, 321);
    bool inv = QMetaObject::invokeMethod( this,"setText",Qt::BlockingQueuedConnection, genericArg);
    qDebug("inv = %d\n", inv);
}

QMetaObject::invokeMethod returns false.

I'm not sure regarding slot "setText". I took it from function name and I suppose it might be related. Where I can find list of slots at all? Should I create special slot for "setText"?

Maybe it is related to fact I run it from the same thread?

mrjj

Hi
A slot is a ordinary c++ member method.
For it to be a slot it should be listed under slots:

class MainWindow: public QMainWindow { 
  Q_OBJECT   
public:
private slots:
  void MachineStatusClicked();
public slots:
  void ShowOrderList();  
private:

so make sure you method is marked as a slot.