qt - How to write a text around a circle using QPainter class? -

the question simple ! want this. either using qpainter class or using qt graphics framework:

there several ways using qpainterpath specified here.

here second example page:

#include <qtgui> #include <cmath>  class widget : public qwidget { public:     widget ()         : qwidget() { } private:     void paintevent ( qpaintevent *)     {         qstring hw("hello world");         int drawwidth = width() / 100;         qpainter painter(this);         qpen pen = painter.pen();         pen.setwidth(drawwidth);         pen.setcolor(qt::darkgreen);         painter.setpen(pen);          qpainterpath path(qpointf(0.0, 0.0));          qpointf c1(width()*0.2,height()*0.8);         qpointf c2(width()*0.8,height()*0.2);          path.cubicto(c1,c2,qpointf(width(),height()));          //draw bezier curve         painter.drawpath(path);          //make painter ready draw chars         qfont font = painter.font();         font.setpixelsize(drawwidth*2);         painter.setfont(font);         pen.setcolor(qt::red);         painter.setpen(pen);          qreal percentincrease = (qreal) 1/(hw.size()+1);         qreal percent = 0;          ( int = 0; < hw.size(); i++ ) {             percent += percentincrease;              qpointf point = path.pointatpercent(percent);             qreal angle = path.angleatpercent(percent);   // clockwise negative              painter.save();             // move virtual origin point on curve             painter.translate(point);             // rotate match angle of curve             // clockwise positive negate angle above             painter.rotate(-angle);             // draw line width above origin move text above line             // , let qt transformations             painter.drawtext(qpoint(0, -pen.width()),qstring(hw[i]));             painter.restore();         }     }  };  int main(int argc, char **argv) {     qapplication app(argc, argv);     widget widget;     widget.show();     return app.exec(); }