Set icon to custom QFontDialog - c++

Question

I created my own font dialog from QFontDialog (new SLOT added). After that, I can't set icon (*.png) to my new font dialog (with func. setWindowIcon). If I use setWindowIcon to default QFontDialog - everything is OK. So, how to set icon to my new font dialog?
FontDialog.h
#include <QtGui>
#include <QtCore>
class FontDialog: public QFontDialog {
public:
FontDialog();
~FontDialog();
public slots:
void someSlot(void);
};
FontDialog.cpp
#include "FontDialog.h"
FontDialog::FontDialog() {
}
FontDialog::~FontDialog() {
}
void someSlot(void) {
}
main.cpp
#include "FontDialog.h"
int main(int argc, char *argv[]) {
QApplication app(argc, argv);
FontDialog *fontDialog = new FontDialog();
fontDialog->setWindowIcon(QIcon(".//icon.png")); // !!!NOT WORKING!!! for custom QFontDialog
fontDialog->show();
app.exec();
}
I'm using Qt 4.8.5 with Qt Designer 2.7.1 environment.
Thanks for any help.

Answer 1

The below works under Qt 4.8.4 on both OS X and Windows 7. It also works on 5.1.1 on Windows, but not on OS X :(
#include <QFontDialog>
#include <QApplication>
#include <QIcon>
#include <QPainter>
class Dialog : public QFontDialog {
public:
Dialog(QWidget *parent = 0) : QFontDialog(parent) {}
Dialog(const QFont & initial, QWidget *parent = 0) : QFontDialog(initial, parent) {}
};
QIcon myIcon(const QColor & color)
{
QIcon icon;
QPixmap pm(128, 128);
pm.fill(Qt::transparent);
QPainter p(&pm);
p.translate(64, 64);
p.scale(50, 50);
p.setBrush(color);
p.setPen(QPen(Qt::lightGray, 0.1));
p.drawEllipse(-1, -1, 2, 2);
icon.addPixmap(pm);
return icon;
}
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
a.setWindowIcon(myIcon(Qt::red));
Dialog d;
d.setWindowIcon(myIcon(Qt::blue));
d.show();
return a.exec();
}