Hi Dears,

I have "Beginning Visual C++2008" book. On page 353, is explained theme of DefaultConstructor. But If I use this explanation VC++2008 studio is not able to compile. Why? Where is problem?

See code:


Error is on row:

CLRW2:: SData^ ptrSData = gcnew SData();

in method:

System::Void button1_Click

Default construktor is in :

ref class SData : public System::Object

I tdied to change "gcnew SData();" to "gcnew SData;"
but without effect.






================================================== ===========
CLRW2.CPP
================================================== ===========

// CLRW2.cpp : main project file.

#include "stdafx.h"
#include "Form1.h"

using namespace CLRW2;

[STAThreadAttribute]
int main(array<System:: String ^> ^args)
{
// Enabling Windows XP visual effects before any controls are created
Application::EnableVisualStyles();
Application:: GyetCompatibleTextRenderingDefault(false);

// Create the main window and run it
Application::Run(gcnew Form1());
return 0;
}


================================================== ===========
Form1.h
================================================== ===========

#pragma once


namespace CLRW2 {

ref class SData;

using namespace System;
using namespace System::ComponentModel;
using namespace System::Collections;
using namespace System::Windows::Forms;
using namespace System:grinning smileyata;
using namespace System:grinning smileyrawing;

/// <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
//
}

protected:
/// <summary>
/// Clean up any resources being used.
/// </summary>
~Form1()
{
if (components)
{
delete components;
}
}
private: System::Windows::Forms::Button^ button1;
protected:

private:
/// <summary>
/// Required designer variable.
/// </summary>
System::ComponentModel::Container ^components;

#pragma region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
void InitializeComponent(void)
{
this->button1 = (gcnew System::Windows::Forms::Button());
this->SuspendLayout();
//
// button1
//
this->button1->Location = System:grinning smileyrawing:tongue sticking out smileyoint(342, 176);
this->button1->Name = L"button1";
this->button1->Size = System:: Drawing:: Size(98, 94);
this->button1->TabIndex = 0;
this->button1->Text = L"button1";
this->button1->UseVisualStyleBackColor = true;
this->button1->Click += gcnew System::EventHandler(this, &Form1::button1_Click);
//
// Form1
//
this->AutoScaleDimensions = System:: Drawing:: SizeF(6, 13);
this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
this->ClientSize = System:: Drawing:: Size(478, 310);
this->Controls->Add(this->button1);
this->Name = L"Form1";
this->Text = L"Form1";
this->ResumeLayout(false);

}
#pragma endregion
private: System::Void button1_Click(System::Object^ sender, System::EventArgs^ e) {
CLRW2:: SData^ ptrSData = gcnew SData();
}
};

ref class SData : public System::Object
{

public:
SData() {};

}; // public ref class SourceData : public System::Object


}