C / C++ / MFC

e40s wrote:

>> Not possible since it is local to the OnDataReady() method.
Extremely informative! Thanks!!

e40s wrote:

>>Can you make it a class member variable instead?

e40s wrote:

David, if you or others can explain to me the proper way to do this, I would be grateful

e40s wrote:

Will it mostly be defined through the header file of this source module?

e40s wrote:

Also are class member variables ordinarily prefixed with "m_"?

e40s wrote:

You've proven yourself so unworthy of speaking with, and so insecure about your abilities and yourself in general (what kind of ass sneers at questions?), that I wouldn't consider following your links.

e40s wrote:

I said I don't know C++.

e40s wrote:

It doesn't mean I don't know what "local" means

e40s wrote:

The first semi-helpful answer you've provided

e40s wrote:

But which class? You're not much of a teacher either

e40s wrote:

Thanks

e40s wrote:

Where? I really try not to be rude when asking a question.

e40s wrote:

You're that talented

e40s wrote:

The larger point: You shouldn't be abusive to anybody

class CMemMapCppClientDlg 
{ 
...

// add  your member
protected:
  CString m_strContent; 

// add access function to this member
public:
  CString GetContent();
};

LRESULT CMemMapCppClientDlg::OnDataReady(WPARAM, LPARAM)
{
HANDLE hMapFile = NULL;
PVOID pView = NULL;

hMapFile = OpenFileMapping(FILE_MAP_READ, FALSE, m_pszMemMapFileName);
if(hMapFile == NULL) {
MessageBox("Can not open file mapping");
return 0;
}

pView = MapViewOfFile(hMapFile, FILE_MAP_READ, 0, 0, 0);
if(pView == NULL) {
MessageBox("Can map view of file");
CloseHandle(hMapFile);
return 0;
}

LPSTR szContent = reinterpret_cast(pView);
int nLen = strlen(szContent);
while(nLen > 0) {
m_strContent += *szContent++;
--nLen;
}
m_strContent += '\0';
m_strContent.Replace("\n", "\r\n");
// m_edit.SetWindowText(m_strContent);
MessageBox(m_strContent);

if(pView) UnmapViewOfFile(pView);
if(hMapFile) CloseHandle(hMapFile);

return 0;
}

// Implemtent new function
CString CMemMapCppClientDlg::GetContent()
{
  return m_strContent;
}

{
...
CMemMapCppClientDlg dlg;

...

CString strContent = dlg.GetContent();
...
}

void foo ( void )
{
    x = 1;
}
 
void main( void )
{
    int x;
}

int x;
 
void foo ( void )
{
    x = 1;
}
 
void main( void )
{
    x = 5;
}

class myClass
{
    void foo( void )
    {
        int x;
    }
};

class myClass
{
private:
    int x;
 
    void foo( void )
    {
        x = 9;
    }
};

class myClass
{
public:
    int x;
 
    void foo( void )
    {
        x = 9;
    }
};

CString CMemMapCppClientDlg::GetContent()<br />
{<br />
  return m_strContent;<br />
}