MFC beginner problem

The_Bullman

I'm trying to mess around with the MFC but having some problems. I've gone to a few tutorial sites but end up with the same problem when I try to compile the code.

Here's the code I've used

#include <AFXWIN.H>

class CExerciseApp : public CWinApp
{
public:
  virtual BOOL InitInstance();
};

class CMainFrame : public CFrameWnd
{
public:
  CMainFrame();
};

CMainFrame::CMainFrame()
{
  Create(NULL, "MFC Fundamentals");
}

BOOL CExerciseApp::InitInstance()
{
  m_pMainWnd = new CMainFrame;
  m_pMainWnd->ShowWindow(SW_NORMAL);

  return TRUE;
}

CExerciseApp theApp;

and the error message

Compiling...
test.cpp
WINVER not defined. Defaulting to 0x0502 (Windows Server 2003)
d:\workspace\c++\visualcpp\mfc3\mfc3\test.cpp(17) : error C2664: 'CFrameWnd::Create' : cannot convert parameter 2 from 'const char [17]' to 'LPCTSTR'
Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast

The tutorials suggested that I go into the project properties and set the "Use of MFC" option to "Use MFC In A Shared DLL" which I did - but no joy

I'm using Visual Studio 2005 on XP

Any ideas?

Devoy

The_Bullman wrote:

I'm trying to mess around with the MFC but having some problems. I've gone to a few tutorial sites but end up with the same problem when I try to compile the code.

Here's the code I've used

#include <AFXWIN.H>

class CExerciseApp : public CWinApp
{
public:
  virtual BOOL InitInstance();
};

class CMainFrame : public CFrameWnd
{
public:
  CMainFrame();
};

CMainFrame::CMainFrame()
{
  Create(NULL, "MFC Fundamentals");
}

BOOL CExerciseApp::InitInstance()
{
  m_pMainWnd = new CMainFrame;
  m_pMainWnd->ShowWindow(SW_NORMAL);

  return TRUE;
}

CExerciseApp theApp;

and the error message


The tutorials suggested that I go into the project properties and set the "Use of MFC" option to "Use MFC In A Shared DLL" which I did - but no joy

I'm using Visual Studio 2005 on XP

Any ideas?

It's been a while since I did any MFC stuff but you could try changing:

Create(NULL, "MFC Fundamentals");

To

Create(NULL, _T("MFC Fundamentals"));

Or

Create(NULL, _TEXT("MFC Fundamentals"));

The_Bullman

Devoy wrote:

It's been a while since I did any MFC stuff but you could try changing:

Create(NULL, "MFC Fundamentals");

To

Create(NULL, _T("MFC Fundamentals"));

Did that and it worked. Thanks for the help

Now to figure out why that worked

Tobias Greeshman

The _T and _TEXT Macro converts a string into the unicode character set if its defined by the compiler or code. If it's not defined then the string is left as it is and the macro is stripped just leaving the string.

The reason that you're getting the error is more than likely because you have unicode defined either in your code or in the compiler. Since the string does not have a _T macro or L outside the quotes it is not converted to a unicode string and the compiler complains.