From Qvector is set the number of buttons and their names (text). After cliking on the button I need to reseave text on it and display in lineEdit.
The header file:
#ifndef DIALOG_H
#define DIALOG_H
#include <QDialog>
#include <QWidget>
#include <QVector>
#include <QLineEdit>
#include <QPushButton>
#include <QHBoxLayout>
#include <QVBoxLayout>
class Dialog : public QDialog
{
Q_OBJECT
public:
Dialog(QWidget *parent = 0);
~Dialog();
private slots:
void Buttons(QVector<QString>&);
private:
QVector<QPushButton*>button;
QString mline;
QLineEdit *line;
QVBoxLayout *layout;
QAction *Clicked;
};
#endif // DIALOG_H
The source file:
#include "dialog.h"
Dialog::Dialog(QWidget *parent): QDialog(parent)
{
this->setFixedSize(this->minimumSize());
line = new QLineEdit(this);
layout = new QVBoxLayout(this);
layout->addWidget(line);
QVector<QString>v;
v.append("a");
v.append("b");
v.append("c");
v.append("5");
v.append("45");
Buttons(v);
for(int i=0;i<button.size();i++)
layout->addWidget(button[i]);
setLayout(layout);
}
Dialog::~Dialog(){}
void Dialog::Buttons(QVector<QString>&vec)
{
if(!button.isEmpty())
button.clear();
for(int i=0; i<vec.size();i++)
{
button.append(new QPushButton(this));
button[i]->setText(vec[i]);
button[i]->show();
}
}
For it I'm not using user interface (ui), and couldn't make slots for all the buttons. How can it be done?
You can use QButtonGroup to id the buttons and consolidate the signals from all the buttons to a single slot
Example
QButtonGroup myButtongroup;
connect(&myButtonGroup,SIGNAL(buttonClicked(QAbstractButton*),this, SLOT(myButtonClicked (QAbstractButton*)));
for(int i=0; i<vec.size();i++)
{
QString buttonName = vec[i];
myButtonGroup.addButton(new QPushButton(buttonName,this),i);
//Get the button using myButtonGroup.button(i) to add to your layout
// You can add the buttons to the layout right here to elimate one more loop
layout.addWidget(myButtonGroup.button(i));
}
//Slot for button clicked
void Dialog::myButtonClicked(QAbstractButton *myButton)
{
line->setText(myButton->text());// Adding the button name to line edit
}
For more QButtonGroup signals refer the documentation
You can use signal/slot in your case. The signal/slot is related to QObject. It does not matter whether you use QT Designer or not. In your code,
for(int i=0; i<vec.size();i++)
{
button.append(new QPushButton(this));
connect(button[i], SIGNAL( clicked() ), this, SLOT(OnButtonClicked()));
button[i]->setText(vec[i]);
button[i]->show();
}
Maintain a QList of QPushButton references that you add and use "signals and slots" to register the clicked() signal of each button to a single slot. Inside the function, iterate the QList of QPushButton by comparing with QObject::sender() and identify the source.
#include <QApplication>
#include <QVBoxLayout>
#include <QPushButton>
#include <QLabel>
class TestWidget: public QWidget
{
Q_OBJECT
private:
QLabel *label;
QVBoxLayout *mainLayout;
QList<QPushButton*> mButtonList;
public:
TestWidget(QWidget *parent=nullptr) : QWidget(parent)
{
mainLayout = new QVBoxLayout(this);
label = new QLabel;
mainLayout->addWidget(label);
this->setLayout(mainLayout);
}
void addButton(QString buttonName)
{
QPushButton *button = new QPushButton(buttonName);
QObject::connect(button, SIGNAL(clicked(bool)), this, SLOT(buttonClicked(bool)));
mButtonList.append(button);
mainLayout->addWidget(button);
}
public slots:
void buttonClicked(bool event)
{
Q_UNUSED(event)
static_cast<QPushButton*>(QObject::sender())->setFocus();
for (int i = 0; i < mButtonList.size(); ++i)
{
if (mButtonList.at(i) == sender())
{
label->setText(QString(mButtonList.at(i)->text()));
break;
}
}
}
};
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
TestWidget wid;
wid.addButton("First Button");
wid.addButton("Second Button");
wid.addButton("Third Button");
wid.addButton("Fourth Button");
wid.show();
return a.exec();
}
#include "main.moc"
The above sample code along with *.pro file is available in github
Related
I am trying to create an image viewer with slide show. When the user clicks on the play button, the viewer starts to show images. When the the user clicks on the stop button, the viewer stops to show images. After stopping, when the user clicks on the play button again, the viewer will continue to show the remaining images. My problem is that when the user clicks on the stop button and click on the play button again, I don't know how to reuse the same window created at the beginning to show the remaining images.
Button3 is the play button.
mainwindow.h
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QMainWindow>
#include <QFileSystemModel>
#include "showpic.h"
#include <QBasicTimer>
#include <QTimer>
namespace Ui {
class MainWindow;
}
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
explicit MainWindow(QWidget *parent = 0);
~MainWindow();
private slots:
void on_pushButton_3_clicked();
void tick();
void on_pushButton_4_clicked();
private:
Ui::MainWindow *ui;
QFileSystemModel *model;
QString filesPath;
ShowPic *showpic;
QStringList filenames;
QStringList::const_iterator m_imageIt;
QTimer m_timer;
};
#endif // MAINWINDOW_H
showpic.h
#ifndef SHOWPIC_H
#define SHOWPIC_H
#include <QWidget>
namespace Ui {
class ShowPic;
}
class ShowPic : public QWidget
{
Q_OBJECT
public:
explicit ShowPic(QWidget *parent = 0);
~ShowPic();
private:
Ui::ShowPic *ui;
public:
void addPixmap(const QPixmap &pixmap);
};
#endif // SHOWPIC_H
main.cpp
#include "mainwindow.h"
#include <QApplication>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
MainWindow w;
w.show();
return a.exec();
}
mainwindow.cpp
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include<QFileDialog>
#include<QFileSystemModel>
#include<QStringList>
#include <QTreeView>
#include <QGraphicsScene>
#include <QTime>
#include <QDebug>
#include <iostream>
#include <QTimer>
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
filenames.append("C:\\test\\image.jpg");
filenames.append("C:\\test\\apple.jpg");
filenames.append("C:\\test\\orange.jpg");
filenames.append("C:\\test\\lemon.jpg");
filenames.append("C:\\test\\grape.jpg");
m_timer.setInterval(1000);
connect(&m_timer, SIGNAL(timeout()), this, SLOT(tick()));
}
MainWindow::~MainWindow()
{
delete ui;
}
void MainWindow::tick(){
showpic->addPixmap(*m_imageIt);
m_imageIt ++;
if(m_imageIt == filenames.end()){
m_timer.stop();
m_imageIt = filenames.begin();
}
}
void MainWindow::on_pushButton_3_clicked() //click on the play button
{
if(!filenames.isEmpty()){ // initial click
showpic = new ShowPic();
m_timer.start();
showpic->setWindowState(Qt::WindowMaximized);
showpic->show();
} else if( ) { // click on the play button again,
m_timer.start(); //???
showpic->setWindowState(Qt::WindowMaximized); //???
showpic->show(); //???
}
}
void MainWindow::on_pushButton_4_clicked() // click on the stop button
{
m_timer.stop();
}
showpic.cpp
#include "showpic.h"
#include "ui_showpic.h"
ShowPic::ShowPic(QWidget *parent) :
QWidget(parent),
ui(new Ui::ShowPic)
{
ui->setupUi(this);
ui->graphicsView->setScene(new QGraphicsScene);
ui->horizontalLayout->addWidget(ui->graphicsView);
this->setLayout(ui->horizontalLayout);
}
ShowPic::~ShowPic()
{
delete ui;
}
void ShowPic::addPixmap(const QPixmap &pixmap){
ui->horizontalLayout->addWidget(ui->graphicsView);
this->setLayout(ui->horizontalLayout);
ui->graphicsView->setScene(new QGraphicsScene);
ui->graphicsView->scene()->addPixmap(pixmap);
ui->graphicsView->fitInView(ui->graphicsView->scene()->itemsBoundingRect() ,Qt::KeepAspectRatio);
}
Else part of on_pushButton_3_clicked won't run in any case because filenames is being filled when MainWindow created. In your code, you're creating new showpic in every click.
Firstly, set showpic to NULL in constructor of MainWindow;
showpic = NULL;
And change on_pushButton_3_clicked method like this;
void MainWindow::on_pushButton_3_clicked() //click on the play button
{
if(showpic == NULL){
showpic = new ShowPic();
}
if(!showpic->isVisible()){
showpic->setWindowState(Qt::WindowMaximized);
showpic->show();
}
m_timer.start();
}
Lastly, i don't have QT now, so my answer may contains typo/syntax error.
This works for me. I tested the scene clearing method, and it worked fine for me. But here I decided to just store the pointer to the QGraphicsPixmapItem as a member variable, and just set a new pixmap to it, instead of clearing the scene constantly. Seems more elegant like this to me.
#include <QtWidgets>
class SlideView : public QWidget
{
Q_OBJECT
public:
SlideView(QWidget *parent = nullptr) : QWidget(parent)
{
setLayout(new QHBoxLayout);
layout()->addWidget(&view);
view.setScene(new QGraphicsScene(this));
pixmap_item = new QGraphicsPixmapItem;
view.scene()->addItem(pixmap_item);
}
void setPixmap(const QPixmap &pixmap)
{
pixmap_item->setPixmap(pixmap);
view.fitInView(view.scene()->itemsBoundingRect(), Qt::KeepAspectRatio);
}
private:
QGraphicsView view;
QGraphicsPixmapItem *pixmap_item = nullptr;
};
class MainWidget : public QWidget
{
Q_OBJECT
public:
MainWidget(QWidget *parent = nullptr) : QWidget(parent)
{
slide_iterator = slides.begin();
setLayout(new QHBoxLayout);
QPushButton *play_button = new QPushButton("Play");
QPushButton *stop_button = new QPushButton("Stop");
layout()->addWidget(play_button);
layout()->addWidget(stop_button);
connect(play_button, &QPushButton::clicked, this, &MainWidget::play);
connect(stop_button, &QPushButton::clicked, this, &MainWidget::stop);
connect(&timer, &QTimer::timeout, this, &MainWidget::showNextSlide);
}
public slots:
void play() {timer.start(1000); view.showMaximized(); view.activateWindow();}
void stop() {timer.stop();}
void showNextSlide()
{
QPixmap pixmap(*slide_iterator);
view.setPixmap(pixmap);
slide_iterator++;
if(slide_iterator == slides.end())
slide_iterator = slides.begin();
}
private:
QTimer timer;
QStringList slides{"one.png", "two.png", "three.png"};
QStringList::const_iterator slide_iterator;
SlideView view;
};
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
MainWidget w;
w.show();
return a.exec();
}
#include "main.moc"
I have the following problem I've been struggeling with. I have a list of toolbuttons placed in a scroll area. I want to make a second scroll area with push buttons that duplicate the text of the tool buttons, but only for the toolbuttons that are selected. For example let's select toolbuttons 1,2 and 3. Then when I push an "update" button, a scrollarea with pushbuttons 1,2 and three should appear. This is my code:
CPP-file:
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QtGui>
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
scrollArea.setParent(ui->centralWidget);
scrollArea.setGeometry(50,50,200,300);
scrollArea.setWidget(&viewport);
viewport.setLayout(&layout);
scrollArea2.setParent(ui->centralWidget);
scrollArea2.setGeometry(350,50,200,300);
scrollArea2.setWidget(&viewport2);
viewport2.setLayout(&layout2);
update.setParent(ui->centralWidget);
update.setGeometry(50,400,100,50);
update.setText("update");
addButtons();
connect(&update,SIGNAL(clicked()),this,SLOT(refreshScrollArea()));
}
MainWindow::~MainWindow()
{
delete ui;
}
void MainWindow::addButtons()
{
for(int i=0; i<5;i++)
{
QToolButton *button = new QToolButton;
button->setCheckable(true);
buttons<<button;
buttons[i]->setText(QString::number(i+1));
buttons[i]->setMinimumSize(200,50);
layout.addWidget(buttons[i]);
}
viewport.resize(200,5*50);
}
void MainWindow::refreshScrollArea()
{
while (!layout2.isEmpty())
{
delete layout2.takeAt(0);
}
int selected_index=0;
for(int i=0; i<5;i++)
{
if (buttons[i]->isChecked())
{
QPushButton * button = new QPushButton;
button->setText(buttons[i]->text());
layout2.addWidget(button);
selected_index++;
}
}
viewport2.resize(150,50*selected_index);
}
header file:
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QMainWindow>
#include <QtGui>
namespace Ui {
class MainWindow;
}
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
explicit MainWindow(QWidget *parent = 0);
~MainWindow();
private slots:
void addButtons();
void refreshScrollArea();
private:
Ui::MainWindow *ui;
QVector<QToolButton*> buttons;
QScrollArea scrollArea;
QScrollArea scrollArea2;
QVBoxLayout layout;
QVBoxLayout layout2;
QWidget viewport;
QWidget viewport2;
QPushButton update;
};
#endif // MAINWINDOW_H
Main:
#include <QtGui/QApplication>
#include "mainwindow.h"
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
MainWindow w;
w.show();
return a.exec();
}
When I push the update-button once, it works perfectly, but when I select different tool buttons and push update again it seems like the buttons are being stacked as if the layout is not empty. However when I select no toolbutton and push update there are no buttons, so the layout is emptied. Can anybody see what I´m doing wrong?
An example of the 'update' code:
// you clear your duplicate layout
int num = layout2->count();
for (int i = 0; i < num; ++i
{
delete layout2->itemAt(0);
}
// you create duplicate buttons for checked initial buttons
for (int i = 0; layout1->count(); ++i)
{
QPushButton* btn = (QPushButton*)layout1->itemAt(i);
if (btn->isChecked())
{
QPushButton* newBtn = new QPushButton;
newBtn->setText(btn->text());
layout2->addWidget(newBtn);
}
}
If you don't need to create and delete new buttons again and again, you can have constant set of buttons and just show and hide them.
I derived a class from QTextEdit and use it as a "logbook". I equipped it with a slot to receive log-messages.
class CLogbook : public QTextEdit
{
Q_OBJECT;
public:
void log(QString msg) {append(msg)};
public slots:
void recvLogSignal(const QString message)
{
append("hallo");
std::cout << "signal received.\n";
log(message);
}
};
another class then emits a signal like this:
// in the header
signals:
void logMessage(const QString);
// in the implementation
emit logMessage("qt is cute");
std::cout << "if you can read this the logMessage was emitted\n";
and also i connect the signal to the slot
connect(tableeditor, SIGNAL(logMessage(const QString)), logbook, SLOT(recvLogSignal(const QString)));
However the message is never shown in the "logbook". What am i missing here?
SOLVED: The connect method was called after emitting the signal :-(
It is hard to see exactly what is wrong with your implementation without a full example. Sometimes signals or slots will fail if an object goes out of scope if it isn't initialized on the heap.
Another way that it could fail is if your QApplication hasn't reached the exec() call.
I haven't experimented with using const in signal and slot calls, and I haven't seen it in any examples before, so that could be causing the problem; but it seems to work fine in the example below.
Working Example With a Derived Class of QTextEdit
Here is a simple example I put together that does some basic logging with a push button and a line edit.
Here is the header:
#ifndef WIDGET_H
#define WIDGET_H
#include <QtGui/QWidget>
//#include <QTextEdit>
#include "clogbook.h"
#include <QLineEdit>
class Widget : public QWidget
{
Q_OBJECT
public:
Widget(QWidget *parent = 0);
~Widget() {}
public slots:
void on_pushButton();
void on_lineEditReturn();
private:
CLogBook * text_edit_log;
QLineEdit * line_edit;
};
#endif // WIDGET_H
Here is the source:
#include "widget.h"
#include <QBoxLayout>
#include <QPushButton>
#include <QTimer>
Widget::Widget(QWidget *parent)
: QWidget(parent)
{
QBoxLayout * box_layout = new QBoxLayout(QBoxLayout::TopToBottom);
text_edit_log = new CLogBook;
line_edit = new QLineEdit("Type Here and press Enter.");
QPushButton * push_button = new QPushButton("Click to Add To Log");
text_edit_log->setText("My Log Book");
box_layout->addWidget(text_edit_log);
box_layout->addWidget(line_edit);
box_layout->addWidget(push_button);
this->setLayout(box_layout);
QObject::connect(push_button, SIGNAL(clicked()), this, SLOT(on_pushButton()));
QObject::connect(line_edit, SIGNAL(returnPressed()), this, SLOT(on_lineEditReturn()));
}
void Widget::on_pushButton()
{
// text_edit_log->append("Push Button Logging Test");
text_edit_log->recvLogSignal("Push button test.");
}
void Widget::on_lineEditReturn()
{
// text_edit_log->append(line_edit->text());
text_edit_log->recvLogSignal(QString("LineEdit: ") + line_edit->text() );
line_edit->clear();
}
And here is the main:
#include <QtGui/QApplication>
#include "widget.h"
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
Widget w;
w.show();
return a.exec();
}
And here is the CLogBook class:
#ifndef CLOGBOOK_H
#define CLOGBOOK_H
#include <QTextEdit>
#include <iostream>
class CLogBook : public QTextEdit
{
Q_OBJECT
public:
explicit CLogBook(QWidget *parent = 0) : QTextEdit(parent) { }
void log (QString msg) { append(msg); }
public slots:
void recvLogSignal(const QString message)
{
append("hallo");
std::cout << "signal received.\n" << std::endl;
log(message);
}
};
#endif // CLOGBOOK_H
I've created 2 classes, each:
has QWidget as a parent
has Q_OBJECT macros
inits some actions, creates menubar and toolbar, and connects actions to them
Then I created the main program file, created QMainWindow, and init my two classes by qmainwnd pointer.
And what I've got - menu works, the second toolbar works, but the first toolbar (created by class 1) doesn't respond to mouse clicks.
What happed with it? Why I can not even move this first toolbar or click its buttons?
Here a sample:
main.cpp
#include <QApplication>
#include <QMainWindow>
#include "CModDocument.h"
#include "CModEditor.h"
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
QMainWindow wnd;
// init CA
CModDocument a(&wnd);
// init CB
CModEditor b(&wnd);
wnd.show();
return app.exec();
}
CModDocument.h
#ifndef CMODDOCUMENT_H
#define CMODDOCUMENT_H
#include <QWidget>
QT_BEGIN_NAMESPACE
class QAction;
class QToolBar;
class QMainWindow;
QT_END_NAMESPACE
class CModDocument: public QWidget
{
Q_OBJECT
public:
CModDocument(QWidget *parent = 0);
QMainWindow *getMainWnd();
public slots:
void newFile();
void open();
bool save();
bool saveAs();
private:
void createActions();
void createToolBars();
void interCom();
QMainWindow *mainWnd;
QToolBar *fileToolBar;
QAction *newAct;
QAction *openAct;
QAction *saveAct;
QAction *saveAsAct;
};
#endif // CMODDOCUMENT_H
CModDocument.cpp
#include <QtGui>
#include <QDebug>
#include "CModDocument.h"
CModDocument::CModDocument( QWidget *parent )
: QWidget( parent )
, mainWnd( (QMainWindow*)parent )
{
createActions();
createToolBars();
interCom();
mainWnd->statusBar()->showMessage(tr("Ready"));
}
void CModDocument::newFile()
{
qDebug() << "newFile";
}
void CModDocument::open()
{
qDebug() << "open";
}
bool CModDocument::save()
{
qDebug() << "save";
bool retVal;
return retVal;
}
bool CModDocument::saveAs()
{
qDebug() << "saveAs";
bool retVal;
return retVal;
}
void CModDocument::createActions()
{
newAct = new QAction(tr("&New"), this);
newAct->setShortcuts(QKeySequence::New);
newAct->setStatusTip(tr("Create a new file"));
openAct = new QAction(tr("&Open..."), this);
openAct->setShortcuts(QKeySequence::Open);
openAct->setStatusTip(tr("Open an existing file"));
saveAct = new QAction(tr("&Save"), this);
saveAct->setShortcuts(QKeySequence::Save);
saveAct->setStatusTip(tr("Save the document to disk"));
saveAsAct = new QAction(tr("Save &As..."), this);
saveAsAct->setShortcuts(QKeySequence::SaveAs);
saveAsAct->setStatusTip(tr("Save the document under a new name"));
}
void CModDocument::createToolBars()
{
fileToolBar = mainWnd->addToolBar(tr("File"));
fileToolBar->addAction(newAct);
fileToolBar->addAction(openAct);
fileToolBar->addAction(saveAct);
}
void CModDocument::interCom()
{
connect(newAct, SIGNAL(triggered()), this, SLOT(newFile()));
connect(openAct, SIGNAL(triggered()), this, SLOT(open()));
connect(saveAct, SIGNAL(triggered()), this, SLOT(save()));
connect(saveAsAct, SIGNAL(triggered()), this, SLOT(saveAs()));
}
CModEditor.h
#ifndef CMODEDITOR_H
#define CMODEDITOR_H
#include <QWidget>
// #include "CModEdiWidget.h"
QT_BEGIN_NAMESPACE
class QMainWindow;
class QAction;
class QMenu;
class QMenuBar;
class QToolBar;
QT_END_NAMESPACE
class CModEditor : public QWidget
{
Q_OBJECT
public:
CModEditor(QWidget *parent = 0);
public slots:
void cut();
private:
void createActions();
void createToolBars();
void interCom();
QAction *cutAct;
QToolBar *editToolBar;
// parent
QMainWindow *mainWnd;
};
#endif
CModEditor.cpp
#include <QtGui>
#include <QDebug>
#include "CModEditor.h"
CModEditor::CModEditor(QWidget *parent)
: QWidget(parent)
, mainWnd( (QMainWindow*)parent )
{
createActions();
createToolBars();
interCom();
}
void CModEditor::cut()
{
qDebug() << "cut";
}
void CModEditor::createActions()
{
cutAct = new QAction(tr("Cu&t"), this);
cutAct->setShortcuts(QKeySequence::Cut);
cutAct->setStatusTip(tr("Cut the current selection's contents to the clipboard"));
}
void CModEditor::createToolBars()
{
editToolBar = mainWnd->addToolBar(tr("Edit"));
editToolBar->addAction(cutAct);
editToolBar->setIconSize(QSize(16, 16));
}
void CModEditor::interCom()
{
connect(cutAct, SIGNAL(triggered()), this, SLOT(cut()));
}
build.pro
CONFIG -= app_bundle
HEADERS = CModDocument.h CModEditor.h
SOURCES = CModDocument.cpp CModEditor.cpp main.cpp
The problem seems to be that you are trying to configure the QMainWindow as the parent to two QWidgets. I modified your main() function as follows and it worked:
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
QMainWindow wnd;
QWidget w;
// init CA
CModDocument a(&wnd, &w);
// init CB
CModEditor b(&wnd, &w);
wnd.show();
return app.exec();
}
Notice the new QWidget w that parents a and b. I'm not even sure my approach is adequate (it probably isn't). I think it is better to add a QLayout to w and add a and b to that QLayout. Then you could set w as wnd's central widget.
How i can add QRadioButtons in a QFrame on runtime?
Thanks.
Add the widget to the appropriate place by calling the addWidget() method, such as:
ui->someLayout->addWidget(widgetToAdd);
Just make sure you do this in your main (UI) thread.
you can add a QRadioButtons on runtime normally in the same way you do before runtime.
you create the QRadioButton dynamically and call the addWidget method of QFrame layout.
if you are not ableto do it, post the code and let me show you.
mainwindow.h
#include <QtGui/QMainWindow>
#include <QPushButton>
#include <QHBoxLayout>
#include <QRadioButton>
class MainWindow : public QMainWindow
{
Q_OBJECT
QHBoxLayout * layout;
QPushButton * button;
public:
MainWindow(QWidget *parent = 0);
public slots:
void radioAdd();
};
mainwindow.cpp
#include "mainwindow.h"
MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
{
layout = new QHBoxLayout(this);
QWidget * w = new QWidget(this);
w->setLayout(layout);
this->setCentralWidget(w);
button = new QPushButton(QString("push"),this);
layout->addWidget(button);
connect(button,SIGNAL(clicked()), this, SLOT(radioAdd()));
}
void MainWindow::radioAdd() {
QRadioButton * radio = new QRadioButton("Search from the &cursor", this);
layout->addWidget(radio);
}
main.cpp
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
MainWindow w;
w.show();
return a.exec();
}
in this code the radioButton get created in the runtime (in the slot function radioAdd). and in your case, instead of adding QRadioButton into the wigdet layout you add them into QFrame.