Hello,

I have only just started programming both C++ and Qt and have a question about accessing functions in classes.

I have a main function with a MDI and have a widget i created for the documents to open. I also have a Wizard called newWizard which currently opens shows some labels and is supposed to create a default child object in the Mdi.

the MainWindow code used to create the Mdi and the children is shown below,

Qt Code: 
  1. #include <QtGui>
  2.  
  3. #include "mainwindow.h"
  4. #include "newwizard.h"
  5. #include "groupbox.h"
  6.  
  7. MainWindow::MainWindow()
  8. {
  9.     mdiArea = new QMdiArea;
  10.     mdiArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAsNeeded);
  11.     mdiArea->setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
  12.     mdiArea->setViewMode(QMdiArea::TabbedView);
  13.     setCentralWidget(mdiArea);
  14.  
  15.     createActions();
  16.     createMenu();
  17.     createToolbars();
  18.  
  19.     readSetting();
  20.  
  21.     setWindowIcon(QIcon(":images/images/cegu.ico"));
  22.     //setCurrentFile("");
  23.  
  24.     createchild();
  25. }
  26.  
  27. void MainWindow::createchild()
  28. {
  29.     GroupBox *child = new GroupBox;
  30.     mdiArea->addSubWindow(child);
  31.     child->show();
  32. }
  33.  
  34.  
  35. void MainWindow::fileNew()
  36. {
  37.     newWizard wizard;
  38.     wizard.exec();
  39. }
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the headerfile for mainwindow is shown below:

Qt Code: 
  1. #ifndef MAINWINDOW_H
  2. #define MAINWINDOW_H
  3.  
  4. #include <QMainWindow>
  5.  
  6. class QAction;
  7. class QLabel;
  8. class QMdiArea;
  9. class newWizard;
  10.  
  11. class MainWindow : public QMainWindow
  12. {
  13.     Q_OBJECT
  14. public:
  15.     MainWindow();
  16.     void createchild();
  17. ...
  18. private:
  19.     void createActions();
  20.     void createMenu();
  21.     void createToolbars();
  22.     void readSetting();
  23.     void writeSetting();
  24.     void loadFile(const QString &fileName);
  25.     bool saveFile(const QString &fileName);
  26.     void setCurrentFile(const QString &fileName);
  27.     QString strippedName(const QString &fullFileName);
  28.  
  29.     QStringList recentFiles;
  30.     QMdiArea *mdiArea;
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The newWizard code is shown below

Qt Code: 
  1. #include <QtGui>
  2. #include "newwizard.h"
  3. #include "mainwindow.h"
  4.  
  5.  
  6. newWizard::newWizard(QWidget *parent) :
  7.     QWizard(parent)
  8. {
  9.     addPage(new introPage);
  10.     addPage(new fileTypePage);
  11.     addPage(new whichVariablesPage);
  12.     addPage(new conclusionPage);
  13.  
  14.  
  15.     setWindowTitle(tr("New File Wizard"));
  16. }
  17.  
  18. void newWizard::accept(QWidget *parent) : QMainWindow(parent)
  19. {
  20.     parent->
  21.     createchild();
  22.  
  23. }
  24.  
  25. introPage::introPage(QWidget *parent) : QWizardPage(parent)
  26. {
  27.     setTitle(tr("Introduction"));
  28.  
  29.     label = new QLabel(tr("This wizard will create a new"
  30. 			  "File either header or Footer"
  31. 			  "with the variable you choose"
  32. 			  ));
  33.     label->setWordWrap(true);
  34.  
  35.     QVBoxLayout *layout = new QVBoxLayout;
  36.     layout->addWidget(label);
  37.     setLayout(layout);
  38. }
  39.  
  40. fileTypePage::fileTypePage(QWidget *parent) : QWizardPage(parent)
  41. {
  42.     setTitle(tr("File Type Selection"));
  43.     setSubTitle(tr("Specify which File type either"
  44. 		   "header or footer and the name."));
  45.  
  46.     headerRadioButton = new QRadioButton(tr("&Header File: "));
  47.     headerNameLineEdit = new QLineEdit;
  48.     connect(headerRadioButton, SIGNAL(toggled(bool)), headerNameLineEdit, SLOT(setEnabled(bool)));
  49.     headerRadioButton->setChecked(true);
  50.  
  51.     footerRadioButton = new QRadioButton(tr("&Footer File: "));
  52.     footerNameLineEdit = new QLineEdit;
  53.     connect(footerRadioButton, SIGNAL(toggled(bool)), footerNameLineEdit, SLOT(setEnabled(bool)));
  54.     footerRadioButton->setChecked(false);
  55.     footerNameLineEdit->setEnabled(false);
  56.  
  57.     registerField("HeaderName", headerNameLineEdit);
  58.     registerField("headerSelect", headerRadioButton);
  59.     registerField("FooterName", footerNameLineEdit);
  60.     registerField("footerSelect", footerRadioButton);
  61.  
  62.     QVBoxLayout *layout = new QVBoxLayout;
  63.     layout->addWidget(headerRadioButton);
  64.     layout->addWidget(headerNameLineEdit);
  65.     layout->addWidget(footerRadioButton);
  66.     layout->addWidget(footerNameLineEdit);
  67.     setLayout(layout);
  68. }
  69.  
  70. whichVariablesPage::whichVariablesPage(QWidget *parent) : QWizardPage(parent)
  71. {
  72.     setTitle(tr("Variables Selection"));
  73.     setSubTitle(tr("Specify which Variables you would like to include."));
  74.  
  75.  
  76. }
  77.  
  78. conclusionPage::conclusionPage(QWidget *parent) :QWizardPage(parent)
  79. {
  80.  
  81. }
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and the header file for that is

Qt Code: 
  1. #ifndef NEWWIZARD_H
  2. #define NEWWIZARD_H
  3.  
  4. #include <QWizard>
  5.  
  6. QT_BEGIN_NAMESPACE
  7. class QCheckBox;
  8. class QGroupBox;
  9. class QLabel;
  10. class QLineEdit;
  12. class QMdiArea;
  13. QT_END_NAMESPACE
  14.  
  15.  
  16. class newWizard : public QWizard
  17. {
  18.     Q_OBJECT
  19.  
  20. public:
  21.     newWizard(QWidget *parent = 0);
  22.  
  23.  
  24.     void accept();
  25.  
  26. };
  27.  
  28. class introPage : public QWizardPage
  29. {
  30.     Q_OBJECT
  31.  
  32. public:
  33.     introPage(QWidget *parent = 0);
  34.  
  35. private:
  36.     QLabel *label;
  37. };
  38.  
  39. class fileTypePage : public QWizardPage
  40. {
  41.     Q_OBJECT
  42.  
  43. public:
  44.     fileTypePage(QWidget *parent = 0);
  45.  
  46. private:
  47.     QLabel *headerNameLabel;
  48.     QLabel *footerNameLabel;
  49.     QLineEdit *headerNameLineEdit;
  50.     QLineEdit *footerNameLineEdit;
  51.     QRadioButton *headerRadioButton;
  52.     QRadioButton *footerRadioButton;
  53.  
  54. };
  55.  
  56. class whichVariablesPage : public QWizardPage
  57. {
  58.     Q_OBJECT
  59.  
  60. public:
  61.     whichVariablesPage(QWidget *parent = 0);
  62.  
  63. private:
  64.     QLabel *label;
  65. };
  66.  
  67.  
  68. class conclusionPage : public QWizardPage
  69. {
  70.     Q_OBJECT
  71.  
  72. public:
  73.     conclusionPage(QWidget *parent = 0);
  74.  
  75. private:
  76.     QLabel *label;
  77. };
  78.  
  79. #endif // NEWWIZARD_H
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This code is not the finished article and is still a work in progress. As can be seen in the newWizard code at lines 18 to 23 i am trying to access the createchild() function from the mainwindow in that function when the wizard closes.

Any help on this would be great.

Thanks

James Parsons