C / C++ / MFC

Salvatore Terress wrote:

Can I modify my code to have TWO instances of A_BT_TAB_DIALOG
and make sure I point to the CORRECT instance ?

SettingsDialog::SettingsDialog(QWidget *parent) :
    //
    // ... stuff
    //
    m_TAB_Connect(new A_BT_TAB_DIALOG), // creates a A_BT_TAB_DIALOG
    m_TAB_Ext(new A_BT_TAB_DIALOG_EXT), // creates a A_BT_TAB_DIALOG_EXT
    // ...
{

SettingsDialog obj1(parent);
SettingsDialog obj2(parent);

class Thing1 {
public:
  Thing1 ();
}

class Composite {
public:
  Composite ();
private:
  Thing1* part;
};

Composite::Composite()
  : part (new Thing1)
{
}

class Thing2 {
public:
  Thing2 (int param=42);
};

class Composite {
public:
  Composite ();
private:
  Thing1* part;
  Thing2* other_part;
};

Composite::Composite ()
  : part (new Thing1) //as before
  , other_part (new Thing2) //same as saying other_part(new Thing2(42))
{}

Composite::Composite ()
  : part (new Thing1) //as before
  , other_part (new Thing2(24) //explicit constructor parameter
{}

class Composite{
public:
  Composite ();
private:
  Thing1 *part;
  Thing1 *other_part;
{}

Salvatore Terress wrote:

I need to digest the "pointer to the object ".

Salvatore Terress wrote:

My program just broke big time , so I am busy trying find where...
I have backup , but not up - to date..

SettingsDialog::SettingsDialog(QWidget *parent) :
    QDialog(parent),
    m_ui(new Ui::SettingsDialog),
    m_status(new QLabel),
 
    m_TAB_Connect(new A_BT_TAB_DIALOG),
    
    //m_TAB_Ext(new A_BT_TAB_DIALOG_EXT),
    m_intValidator(new QIntValidator(0, 4000000, this))
{

QDialog(parent),

m_ui(new Ui::SettingsDialog),

m_status(new QLabel),

m_TAB_Connect(new A_BT_TAB_DIALOG),

m_intValidator(new QIntValidator(0, 4000000, this))

Salvatore Terress wrote:

where to find decent description of the
this syntax
m_status(new QLabel),

_ostream.imbue(std::locale::classic());

m_serial(new QSerialPort(this),
  // sequence 1` st add HERE
   m_TAB_Ext(new A_BT_TAB_DIALOG_EXT)

m_TAB_Ext(new A_BT_TAB_DIALOG_EXT())

A_BT_TAB_DIALOG_EXT *m_TAB_Ext;

//! [1]
      //! add rfcomm ??
      m_serial(new QSerialPort(this),
     // sequence 1` st add HERE
      m_TAB_Ext(new A_BT_TAB_DIALOG_EXT)

Quote:

m_serial(new QSerialPort(this),
// sequence 1` st add HERE
m_TAB_Ext(new A_BT_TAB_DIALOG_EXT)

QSerialPort *m_serial = nullptr;

<pre>  private:
        // sequence 4th*
    public:
        A_BT_TAB_DIALOG_EXT *m_TAB_Ext = nullptr;

    private:

        void showStatusMessage(const QString &message);
        Ui::MainWindow_Bluetooth *m_ui = nullptr;
        // add MDIarea ??
        QMdiArea  *m_mdiarea = nullptr;

        QLabel *m_status = nullptr;
        Console *m_console = nullptr;
        SettingsDialog *m_settings = nullptr;
        QSerialPort *m_serial = nullptr;


        // STEP 2 define class ??
        // spelling error  !!!
        SettingsDialog_RFcomm *m_settings_RFcomm = nullptr;

class cfoo
{
int // syntax error
public:
void foo();
}

class cfoo
{
xyz // syntax error
public:
void foo();
}