How can 1 use one in 2 forms?

  • Thread starter Thread starter Allen
  • Start date Start date
A

Allen

Below are 4 forms. Namely: Form1, EmployeeID, AboutBox and
EnterEmployeeName. I made a class to help in open, write and read from
files called Time. I managed to declare class Time in EmployeeID space, but
could not declare it in EnterEmployeeName. In other words, I can declare
class Time in one space only. I really want to use class Time in both forms
EmployeeID and EnterEmployeeName. Can anybody tell me why I always get
error below, every time I run the program? And how can I use the Time class
in both the above forms?

1>c:\users\allen\documents\visual studio
2008\projects\timetracking\timetracking\Time.h(5) : error C2011: 'Time' :
'class' type redefinition
1> c:\users\allen\documents\visual studio
2008\projects\timetracking\timetracking\Time.h(5) : see declaration of
'Time'
1>EnterEmployeeName.cpp

#pragma once
#include "AboutBox.h"
#include "EmployeeID.h"
#include "EnterEmployeeName.h"
namespace TimeTracking
{
using namespace System::Windows::Forms;
public ref class Form1 : public System::Windows::Forms::Form
{

};
}
/***************************/
#pragma once
#include "Time.h"
//#include "stdafx.h"
#using <mscorlib.dll>

namespace TimeTracking
{
public ref class EmployeeID : public System::Windows::Forms::Form
{
};
}
/***************************/
#pragma once
namespace TimeTracking
{
public ref class AboutBox : public System::Windows::Forms::Form
{

};
}
/***************************/
#pragma once
#include "stdafx.h"
//#include "Time.h" //-------------uncomment and get error C2011

namespace TimeTracking
{

public ref class EnterEmployeeName : public System::Windows::Forms::Form
{

};
}
/***************************/
using namespace System;
ref class Time
{
};
/***************************/
#include "stdafx.h"
#include "Time.h"
#using <mscorlib.dll>
 
Below are 4 forms. Namely: Form1, EmployeeID, AboutBox and
EnterEmployeeName.  I made a class to help in open, write and read from
files called Time.  I managed to declare class Time in EmployeeID space, but
could not declare it in EnterEmployeeName.  In other words, I can declare
class Time in one space only.  I really want to use class Time in both forms
EmployeeID and EnterEmployeeName.  Can anybody tell me why I always get
error below, every time I run the program?  And how can I use the Time class
in both the above forms?

1>c:\users\allen\documents\visual studio
2008\projects\timetracking\timetracking\Time.h(5) : error C2011: 'Time' :
'class' type redefinition
1>        c:\users\allen\documents\visual studio
2008\projects\timetracking\timetracking\Time.h(5) : see declaration of
'Time'
1>EnterEmployeeName.cpp

#pragma once
#include "AboutBox.h"
#include "EmployeeID.h"
#include "EnterEmployeeName.h"
namespace TimeTracking
{
 using namespace System::Windows::Forms;
  public ref class Form1 : public System::Windows::Forms::Form
 {

 };}

/***************************/
#pragma once
#include "Time.h"
//#include "stdafx.h"
#using <mscorlib.dll>

namespace TimeTracking
{
 public ref class EmployeeID : public System::Windows::Forms::Form
 {
 };}

/***************************/
#pragma once
namespace TimeTracking
{
 public ref class AboutBox : public System::Windows::Forms::Form
 {

 };}

/***************************/
#pragma once
#include "stdafx.h"
//#include "Time.h"   //-------------uncomment and get error C2011

namespace TimeTracking
{

 public ref class EnterEmployeeName : public System::Windows::Forms::Form
 {

 };}

/***************************/
using namespace System;
ref  class Time
{};

/***************************/
#include "stdafx.h"
#include "Time.h"
#using <mscorlib.dll>
Click to expand...

Allen, you are in the wrong group.
 
Below are 4 forms. Namely: Form1, EmployeeID, AboutBox and
EnterEmployeeName. I made a class to help in open, write and read
from files called Time. I managed to declare class Time in EmployeeID
space, but could not declare it in EnterEmployeeName. In other words,
I can declare class Time in one space only. I really want to use
class Time in both forms EmployeeID and EnterEmployeeName. Can
anybody tell me why I always get error below, every time I run the
program? And how can I use the Time class in both the above forms?
Click to expand...

I am not a C++ expert, so I would suggest reposting in a C++ group. I can,
however, tell you WHAT is happening. With the way you are linking Time, you
are ending up with two links, which is causing the compiler to bomb. As I
have only hacked C++ in my career, I am not sure what to tell you to get
past this error, however.

Peace and Grace,


--
Gregory A. Beamer
MVP; MCP: +I, SE, SD, DBA

Twitter: @gbworld
Blog: http://gregorybeamer.spaces.live.com

My vacation and childhood cancer awareness site:
http://www.crazycancertour.com

*******************************************
| Think outside the box! |
*******************************************
 
Below are 4 forms. Namely: Form1, EmployeeID, AboutBox and
EnterEmployeeName.  I made a class to help in open, write and read from
files called Time.  I managed to declare class Time in EmployeeID space, but
could not declare it in EnterEmployeeName.  In other words, I can declare
class Time in one space only.  I really want to use class Time in both forms
EmployeeID and EnterEmployeeName.  Can anybody tell me why I always get
error below, every time I run the program?  And how can I use the Time class
in both the above forms?

1>c:\users\allen\documents\visual studio
2008\projects\timetracking\timetracking\Time.h(5) : error C2011: 'Time' :
'class' type redefinition
1>        c:\users\allen\documents\visual studio
2008\projects\timetracking\timetracking\Time.h(5) : see declaration of
'Time'
1>EnterEmployeeName.cpp

#pragma once
#include "AboutBox.h"
#include "EmployeeID.h"
#include "EnterEmployeeName.h"
namespace TimeTracking
{
 using namespace System::Windows::Forms;
  public ref class Form1 : public System::Windows::Forms::Form
 {

 };}

/***************************/
#pragma once
#include "Time.h"
//#include "stdafx.h"
#using <mscorlib.dll>

namespace TimeTracking
{
 public ref class EmployeeID : public System::Windows::Forms::Form
 {
 };}

/***************************/
#pragma once
namespace TimeTracking
{
 public ref class AboutBox : public System::Windows::Forms::Form
 {

 };}

/***************************/
#pragma once
#include "stdafx.h"
//#include "Time.h"   //-------------uncomment and get error C2011

namespace TimeTracking
{

 public ref class EnterEmployeeName : public System::Windows::Forms::Form
 {

 };}

/***************************/
using namespace System;
ref  class Time
{};

/***************************/
#include "stdafx.h"
#include "Time.h"
#using <mscorlib.dll>
Click to expand...

How about making your other classes sub-classes of Time. Then all
times public methods would be available to them.

HTH,
Richard
 
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