QScrollArea for customwidget

[haney]

Hi,

I want to add new QComboBox when user presses Add QPushButton. I have added a customWidget to the QScrollArea. When I clicked Add, new combo is added but size is getting reduced. So if we add more combos they are not visible.

Ideally, if we add more combos I need a vertical scrollbar to be available. I have given my sample code. Plz share your views. Highly appreciate your help in this regard.

Below code is working.

// header file
@

#ifndef PLOTCONTROLS_H
#define PLOTCONTROLS_H

#include <QtCore>
#include <QtGui>

class CustomWidget: public QWidget
{
Q_OBJECT
private:
QVBoxLayout* vbox;
public:
CustomWidget(QWidget *parent=0);
QPushButton *btn;
public slots:
void addCustomWidget();
};

class PlotControls: public QWidget
{
Q_OBJECT
private:
QScrollArea *scroll;
CustomWidget custom;
public:
PlotControls(QWidget parent=0);
};

#endif // PLOTCONTROLS_H
@

// main.cpp
@

#include <stdlib.h>
#include <QtGui>
#include <QtCore/QDebug>

#include "PlotControls.h"

CustomWidget::CustomWidget(QWidget parent)
{
QComboBox combo1 = new QComboBox;
btn = new QPushButton("Add");
vbox = new QVBoxLayout;
vbox->addWidget(combo1);
QObject::connect(btn,SIGNAL(clicked()),this,SLOT(addCustomWidget()));
this->setLayout(vbox);
}

void CustomWidget::addCustomWidget()
{
this->vbox->addWidget(new QComboBox);
this->setLayout(vbox);
}

PlotControls::PlotControls(QWidget *parent)
{

QScrollArea* scroll = new QScrollArea;
QLabel* l1 = new QLabel("Title:");
QLineEdit* le1 = new QLineEdit;
QGridLayout* grid = new QGridLayout;
grid->addWidget(l1,0,0);
grid->addWidget(le1,0,1);

custom = new CustomWidget(scroll);
scroll->setWidget(custom);
grid->addWidget(scroll,3,0);
grid->addWidget(custom->btn);
this->setLayout(grid);

}

class MyMainWindow:public QMainWindow
{
private:
QDockWidget* dock;
public:
MyMainWindow()
{
QGroupBox *grp = new QGroupBox;
QVBoxLayout *v = new QVBoxLayout;
QTextEdit *te = new QTextEdit;
v->addWidget(te);
dock = new QDockWidget("Plot Controls",this);
dock->setAllowedAreas(Qt::BottomDockWidgetArea);
dock->setWidget(new PlotControls);
this->addDockWidget(Qt::BottomDockWidgetArea, dock);
grp->setLayout(v);
this->setCentralWidget(grp);

 }

};

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

@

Regards,
Haney.