Error C2027

[AngZangGui]

I have created 2 window forms - Form1 and Form2. What I need to do now is to enable the event in Form2.h to access functions declared in Form1.cpp.

Below are parts of the codes:

//Form1.h
 
#pragma once
 
#include <stdio.h>
#include <vcclr.h>
#include <iostream>
using namespace std;
#include "File1.h"
#include "File2.h"
#include "Form3.h"
 
namespace Project {
 
    using namespace System;
    using namespace System::IO;
    using namespace System::ComponentModel;
    using namespace System::Collections;
    using namespace System::Windows::Forms;
    using namespace System::Data;
    using namespace System::Drawing;
    using namespace System::Text;
    using namespace System::Runtime::InteropServices;
    using namespace System::Threading;
 
    /// <summary>
    /// Summary for Form1
    ///
    /// WARNING: If you change the name of this class, you will need to change the
    ///          'Resource File Name' property for the managed resource compiler tool
    ///          associated with all .resx files this class depends on.  Otherwise,
    ///          the designers will not be able to interact properly with localized
    ///          resources associated with this form.
    /// </summary>
    public ref class Form1 : public System::Windows::Forms::Form
    {
    public:
        Form1(void)
        {
            InitializeComponent();
            //
            //TODO: Add the constructor code here
            //            
        }
 
//Form1.cpp
void Form1::test()
{
        //Functions here
}
 
//Form2.h
#pragma once
 
#include "Form3.h"
 
using namespace System;
using namespace System::ComponentModel;
using namespace System::Collections;
using namespace System::Windows::Forms;
using namespace System::Data;
using namespace System::Drawing;
using namespace AxVIDEOCAPLib;
 
namespace Project{
 
    ref class Form1;
.
.
.
#pragma endregion
    public:
        Form1 ^pdlg;
                int a;
 
 
private: System::Void Form2_MouseDown(System::Object^  sender, System::Windows::Forms::MouseEventArgs^  e) {
             if (m_LeftMouseDown = true)
             {
                 pdlg->test() = a; //error here
             }             
         }
 

Error 13 error C2027: use of undefined type 'Project::Form1' c:\documents and settings\desktop\projectrproject\Form2.h 194

Is there anyway I can resolve this error?

Thank you.

[kenobewan]

Looks like you are using some C++. More info please.

[AngZangGui]

Looks like you are using some C++. More info please.

Sorry... I'm using C++.NET in Microsoft Visual Studio 2005.