Porting from Qt3 to Qt4

[vermarajeev]

Hi guys,
Seems to be silly question but I'm unable to achieve it.

I'm porting my application from Qt3 to Qt4 and is using Qt3 support classes for a while. The problem is I use Q3MainWindows, Q3DockWindow, QSplitter, Q3Frame as shown in code below. Now I want to hide/unhide the dockWindow. I do this by right clicking on toolBar. First I right click and the dockWindow is hidden then again I rightClick and click on 'routes' but the dockWindow doesnt appear. I dont know why.

Please dont suggest me to use QMainWindow, QDockWidget or so... I have already made lots of changes and cant revert back. Please help me to rectify this problem with the solution given

#include <Q3MainWindow>
#include <QSplitter>
 
class MainWindow : public Q3MainWindow
{
	Q_OBJECT
 
public:
	MainWindow(QWidget *parent = 0);
	~MainWindow();
 
private:
	Q3DockWindow	*treeDock;
	QSplitter	*s2;
	Q3Frame		*frame;
 
};

#include <Q3MainWindow>
#include <QSplitter>

class MainWindow : public Q3MainWindow
{
	Q_OBJECT

public:
	MainWindow(QWidget *parent = 0);
	~MainWindow();

private:
	Q3DockWindow	*treeDock;
	QSplitter	*s2;
	Q3Frame		*frame;
	
};

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MainWindow::MainWindow(QWidget *parent)
	: Q3MainWindow(parent)
{
	treeDock = new Q3DockWindow( this, "routes" );
	Q_CHECK_PTR( treeDock );
	moveDockWindow( treeDock, Qt::Left );
	treeDock->setHorizontallyStretchable( true );
	treeDock->setVerticallyStretchable( true );
	treeDock->setResizeEnabled( true );
	treeDock->setOrientation( Qt::Vertical );
	treeDock->setCaption( tr("Routes") );	
 
	s2 = new QSplitter( Qt::Vertical, this, "splitter" );
	Q_CHECK_PTR( s2 );
	setCentralWidget( s2 );
	frame = new Q3Frame( s2 );
	frame->setBackgroundColor( Qt::white );
	frame->setAutoFillBackground( true );
 
	Q3PopupMenu	*file = new Q3PopupMenu;
	Q_CHECK_PTR( file );
 
	int openId = file->insertItem(  tr("&Open..."), this, SLOT(fileOpen()), 
		Qt::CTRL+Qt::Key_O );
 
	Q3PopupMenu	*edit = new Q3PopupMenu;
	Q_CHECK_PTR( edit );
	int copyId = edit->insertItem(  tr("&Copy"), this, SLOT(copy()), Qt::CTRL+Qt::Key_C );	
 
	menuBar()->insertItem( tr("&File"), file );
	menuBar()->insertItem( tr("&Edit"), edit );
}

MainWindow::MainWindow(QWidget *parent)
	: Q3MainWindow(parent)
{
	treeDock = new Q3DockWindow( this, "routes" );
	Q_CHECK_PTR( treeDock );
	moveDockWindow( treeDock, Qt::Left );
	treeDock->setHorizontallyStretchable( true );
	treeDock->setVerticallyStretchable( true );
	treeDock->setResizeEnabled( true );
	treeDock->setOrientation( Qt::Vertical );
	treeDock->setCaption( tr("Routes") );	

	s2 = new QSplitter( Qt::Vertical, this, "splitter" );
	Q_CHECK_PTR( s2 );
	setCentralWidget( s2 );
	frame = new Q3Frame( s2 );
	frame->setBackgroundColor( Qt::white );
	frame->setAutoFillBackground( true );

	Q3PopupMenu	*file = new Q3PopupMenu;
	Q_CHECK_PTR( file );

	int openId = file->insertItem(  tr("&Open..."), this, SLOT(fileOpen()), 
		Qt::CTRL+Qt::Key_O );

	Q3PopupMenu	*edit = new Q3PopupMenu;
	Q_CHECK_PTR( edit );
	int copyId = edit->insertItem(  tr("&Copy"), this, SLOT(copy()), Qt::CTRL+Qt::Key_C );	

	menuBar()->insertItem( tr("&File"), file );
	menuBar()->insertItem( tr("&Edit"), edit );
}

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#include <QtGui/QApplication>
#include "mainwindow.h"
 
int main(int argc, char *argv[])
{
	QApplication a(argc, argv);
	MainWindow w;
	w.show();
	a.connect(&a, SIGNAL(lastWindowClosed()), &a, SLOT(quit()));
	return a.exec();
}

#include <QtGui/QApplication>
#include "mainwindow.h"

int main(int argc, char *argv[])
{
	QApplication a(argc, argv);
	MainWindow w;
	w.show();
	a.connect(&a, SIGNAL(lastWindowClosed()), &a, SLOT(quit()));
	return a.exec();
}

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Thanks in advance

[vermarajeev]

Can someone please help me out with this.

Thanks