How can I set a push button

Demorald

I drew some shapes using QPainter and now I want to add a push button on one of them so I can press it and do something. But no matter how I try to do it, using a form editor or directly to the code, it does not appear.

cpp with shapes (i tried to add a button here directly, but i didn't work, same as in the form editor)

#include <QPainter>
#include "colours.h"
#include <QWidget>
#include <QPushButton>
#include <QApplication>

Colours::Colours(QWidget *parent)
    : QWidget(parent)
{ }

void Colours::paintEvent(QPaintEvent *e) {

  Q_UNUSED(e);

  doPainting();
}

/*class MyButton : public QWidget {
  
 public:
     MyButton(QWidget *parent = 0);
};
 
MyButton::MyButton(QWidget *parent)
    : QWidget(parent) {
 
  QPushButton *quitBtn = new QPushButton("Quit", this);
  quitBtn->setGeometry(50, 40, 75, 30); /
 
  connect(quitBtn, &QPushButton::clicked, qApp, &QApplication::quit);
}*/




void Colours::doPainting() {

  QPainter painter(this);

  painter.setRenderHint(QPainter::Antialiasing);
  painter.setPen(QColor("#d4d4d4"));

  painter.setBrush(QBrush("#8B4513"));
  painter.drawRect(100, 150, 300, 300);

  QPainterPath path1;

  painter.setBrush(QBrush("#D2691E"));
  painter.drawChord(100, 50, 300, 200, 0, 16*180);

  painter.setBrush(QBrush("#A0522D"));
  painter.drawRect(200, 350, 100, 100);

  painter.setBrush(QBrush("#8B4513"));
  painter.drawRect(280, 400, 10, 10);



}

main cpp:

#include <QApplication>
#include "colours.h"
#include <QWidget>
#include <QPushButton>


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

  QApplication app(argc, argv);

  Colours window;


  window.setWindowTitle("Colours");
  window.show();

  return app.exec();
}

using the form editor :
alt text
What can I do?

mrjj

Hi
Your class Colours do not seem to call setupUI so im not sure
the ui is used and hence the button will not show up.
Have a look at a normal MainWindow and see it has a UI struct and a call to set it up.
you must have the same for UI file to have effect.


MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
    ui->setupUi(this);

---

class MainWindow : public QMainWindow
{
   ...
private:
    Ui::MainWindow *ui;
...

Demorald

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