Link to home
Start Free TrialLog in
Avatar of inteq
inteq

asked on

How to use pointer array data in MFC?

Dear Experts,

I am passing the pointer array to my function by using MFC exe in visual c++. The followings are my details.

//////////////////////////////////////////////////////////////////////////////////////////////////
In MyAppDlg.h
protected:
      HICON m_hIcon;

      // Generated message map functions
      //{{AFX_MSG(CMy7_10_V2Dlg)
      ...
                ...
      afx_msg void check(CString* a);
      //}}AFX_MSG
      DECLARE_MESSAGE_MAP()
};

In MyAppDlg.cpp
void CMy7_10_V2Dlg::OnButton1()
{
      typedef unsigned char Byte;
      // TODO: Add your control notification handler code here
      MyString="aaa";
      check(&MyString);
}


In MyAppDlg.cpp

void CMy7_10_V2Dlg::check(CString* a)
{
                char *temp = new char[16];
      m_result = new char[16];
      for (int i=0;i<16;i++)
      {
            temp[i]= a[i];
            
      }
}
///////////////////////////////////////////////////////////////////////////////////////

My error is  "error C2679: binary '=' : no operator defined which takes a right-hand operand of type 'class CString' (or there is no acceptable conversion)
Error executing cl.exe."
////////////////////////////////////////////////////////////////////////
Please kindly answer for me how to use the data which is inside the pointer array passed from another function.
Thanks in advance.
Regards.

      
ASKER CERTIFIED SOLUTION
Avatar of Jaime Olivares
Jaime Olivares
Flag of Peru image

Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
Since you haven't to modify the string you can ass a const reference

// In MyAppDlg.cpp
 
void CMy7_10_V2Dlg::OnButton1()
{
      typedef unsigned char Byte;
      // TODO: Add your control notification handler code here
      MyString="aaa";
      check(MyString);
}
 
 
// In MyAppDlg.cpp
 
void CMy7_10_V2Dlg::check(const CString& a)
{
      char *temp = new char[16];
      m_result = new char[16];
      for (int i=0;i<16;i++)
      {
            temp[i]= a[i];
      }
}

Open in new window

SOLUTION
Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
Also:
temp[i]= (*a)[i];

Note that you have a problem with the string length. You chack 16 character but the string length is 3.

void CMy7_10_V2Dlg::check(const CString& a)
{
      char *temp = new char[16];
      m_result = new char[16];
 
      int nMax = min( 16, a.GetLength() );
 
      for (int i=0;i<nMax;i++)
      {
            temp[i]= a[i];
      }
}

Open in new window