QPrinter and two separate widgets to print on one page

[YaK]

I have two separate widgets. I made a QPrintDialog and connected its paintRequested signal to my own slots of both widgets. The slots are here:

void PicWidget::Print( QPrinter* printer )
{
	cout << "PCW:P"<<endl;
	QPainter* painter = printer->paintEngine()->painter();
	if(!painter)
		painter = new QPainter(printer);
 
	painter->begin(printer);
	painter->drawText(100,100, "PICW");
	painter->end();
}
 
void BrWidget::Print( QPrinter* printer )
{
	QPainter* painter = printer->paintEngine()->painter();
 	if(!painter)
 		painter = new QPainter(printer);
 
 
	painter->begin(printer);
 	painter->drawText(100,200, "BRW");
	painter->end();
}

void PicWidget::Print( QPrinter* printer )
{
	cout << "PCW:P"<<endl;
	QPainter* painter = printer->paintEngine()->painter();
	if(!painter)
		painter = new QPainter(printer);

	painter->begin(printer);
	painter->drawText(100,100, "PICW");
	painter->end();
}

void BrWidget::Print( QPrinter* printer )
{
	QPainter* painter = printer->paintEngine()->painter();
 	if(!painter)
 		painter = new QPainter(printer);
	
	
	painter->begin(printer);
 	painter->drawText(100,200, "BRW");
	painter->end();
}

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But it doesn't work: only one of the methods works properly. It also writes that two QPainters are working at once. How can i solve the problem?

[wysota]

I would remove the lines with checking the paint engine. Also you shouldn't connect that signal to more than one slot at once. Instead connect the signal to a custom slot not in the widgets but in the object that controls the printing (like the parent widget of the two widgets).

But I would also use this code:

MyWidget1 *w1 = ...
MyWidget2 *w2 = ...
 
QPrinter printer;
// setupPrinter, or start here if you're triggered on paintRequested()
QPainter painter(&printer);
// modify (scale, translate) painter if needed
w1->render(&painter);
// modify (scale, translate) painter if needed
w2->render(&painter);

MyWidget1 *w1 = ...
MyWidget2 *w2 = ...

QPrinter printer;
// setupPrinter, or start here if you're triggered on paintRequested()
QPainter painter(&printer);
// modify (scale, translate) painter if needed
w1->render(&painter);
// modify (scale, translate) painter if needed
w2->render(&painter);

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