[SOLVED]Drawing in QLabel

mahmoud899

Hello, I am having some difficulties with a program I am writing. I am writing a very simple program, what I want is to draw inside a QLabel a rectangle and paint it.

@
#include <QApplication>
#include <QLabel>
#include <QPainter>
#include <QHBoxLayout>
#include <QPixmap>

class myLabel : public QWidget
{
public:
myLabel(QWidget *parent = 0);

protected:
void drawLabel(QPaintEvent *event);

private:
QLabel *label;
};

myLabel::myLabel(QWidget *parent):QWidget(parent)
{

}

void myLabel::drawLabel(QPaintEvent *e)
{
Q_UNUSED(e);

QPainter *painter = new QPainter();
QPixmap *myPix = new QPixmap();

painter->setBrush(QBrush("#c56c00"));
painter->drawRect(10, 15, 10, 10);

myPix->fill(painter, 20,20);

label = new QLabel("", this);

label->setPixmap(myPix);

}

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

myLabel labelMy;

labelMy.resize(300,300);
labelMy.show();

return a.exec&#40;&#41;;

}

@

I read I can draw inside a QLabel with QPixmap by using the setPixmap() function of the label. I am having difficulties doing that, I would like to know how it is done. Please keep your answers simple. Thank You.

raven-worx

you never call drawLabel() .. .at least in the code you posted

you're creating an QPainter which has no paint device (see the docs) to paint to

@
void myLabel::drawLabel()
{
QPixmap myPix( QSize(20,20) );

QPainter painter(myPix);
painter.setBrush( Qt::red );
painter.drawRect(5, 5, 10, 10);

label = new QLabel("", this);
label->setPixmap(myPix);

}
@

But i would subclass QLabel and override it's paintEvent handler .... unless you need a label object inside your custom widget?

mahmoud899

raven-worx

Thank you for replying back the code you provided worked fine.