Font size of a spinbox

[SailinShoes]

I define the font size for all views/widgets in main. But I would like to set a different font size to a spinbox in one of the views. I do this explicitly like this

pSpinbox = new QSpinBox(this);
QFont font( pSpinbox->font() );
font.setPointSize( 48 );
pSpinbox->setFont( font );

pSpinbox = new QSpinBox(this);
QFont font( pSpinbox->font() );
font.setPointSize( 48 );
pSpinbox->setFont( font );

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But the font size of the spinbox remains the same? What is wrong?

[wysota]

Could we see a larger portion of the code? Especially the main().

[SailinShoes]

int main(int argc, char *argv[])
{
     QApplication app(argc, argv);
 
 
 
     return app.exec();
 }

int main(int argc, char *argv[])
{
     QApplication app(argc, argv);


    
     return app.exec();
 }

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[wysota]

Not really helpful. What's between lines 3 and 7?

[SailinShoes]

int main(int argc, char *argv[])
{
 
	QApplication app(argc, argv);
 
	HmiMonitor *monitor = new HmiMonitor;
 
	monitor->initiate(); 
 
	return app.exec();
 
}
 
void HmiMonitor::initiate()
{
 
	KeyboardHandler *pKeyboard = new KeyboardHandler;
 
	QPalette pal;
	pal.setColor(QPalette::Base, QColor(Qt::black));
	pal.setColor(QPalette::Window, QColor(Qt::black));
	pal.setColor(QPalette::Text, QColor(255, 230, 0));
	QApplication::setPalette(pal);
 
	QApplication::setFont(QFont("Helvetica", 16));
 
	SignalSubscriber *pSignalSubscriber = new SignalSubscriber;
 
	CommandManager *pCommandManager = new CommandManager;
 
	ViewManager *pViewManager = new ViewManager(
		pSignalSubscriber->getSignalManager(),
		pCommandManager);
 
}

int main(int argc, char *argv[])
{
	
	QApplication app(argc, argv);
	 
	HmiMonitor *monitor = new HmiMonitor;
	
	monitor->initiate(); 
	
	return app.exec();
	
}

void HmiMonitor::initiate()
{
	
	KeyboardHandler *pKeyboard = new KeyboardHandler;

	QPalette pal;
	pal.setColor(QPalette::Base, QColor(Qt::black));
	pal.setColor(QPalette::Window, QColor(Qt::black));
	pal.setColor(QPalette::Text, QColor(255, 230, 0));
	QApplication::setPalette(pal);
	
	QApplication::setFont(QFont("Helvetica", 16));
	
	SignalSubscriber *pSignalSubscriber = new SignalSubscriber;
	
	CommandManager *pCommandManager = new CommandManager;
	
	ViewManager *pViewManager = new ViewManager(
		pSignalSubscriber->getSignalManager(),
		pCommandManager);
	
}

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[wysota]

So assuming that you apply the font to the spinbox in the constructor, you first change spinbox's font and then set the default font for the application overriding your earlier changes. Try doing it the other way round (contents of initialize() can be moved into the constructor).

[SailinShoes]

I have tried your proposal, but it does not work. I should add that the code is executed on Qtopia in an embedded system. I suspect it has to do with Qtopia.

I have done some prototyping on my laptop and there are no problems to change font size.

I have talked to the company that provide the embedded target and Qtopia to check if there
are some limits of the font sizes?