Form2 の要素を Form1 にアクセス (追加) することは、c++ vs2010 で問題なく機能します。Visual Studio Express 2012 で同じことを最初から試してみると、Form2 は宣言されていない識別子であるというエラーが表示され続けます。何が間違っているのですか？
#include "stdafx.h"
#include "Form2.h"
....
Form2^ frm = gcnew Form2;
this->Controls->Add(frm->panel1);
エラー C2065: 'Form2': 宣言されていない識別子
コード形式 1:
「stdafx.h」を含める
「Form2.h」を含める
#pragma once
namespace WindowsFormsApplication{
using namespace System;
using namespace System::ComponentModel;
using namespace System::Collections;
using namespace System::Windows::Forms;
using namespace System::Data;
using namespace System::Drawing;
/// <summary>
/// Summary for Form1
/// </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::Drawing::Point(31, 32);
this->button1->Name = L"button1";
this->button1->Size = System::Drawing::Size(75, 27);
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(284, 262);
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) {
Form2^ frm = gcnew Form2;
this->Controls->Add(frm->panel1);
}
};
}
コード形式 2:
#pragma once
namespace Windows_Forms_Application{
using namespace System;
using namespace System::ComponentModel;
using namespace System::Collections;
using namespace System::Windows::Forms;
using namespace System::Data;
using namespace System::Drawing;
/// <summary>
/// Summary for Form2
/// </summary>
public ref class Form2 : public System::Windows::Forms::Form
{
public:
Form2(void)
{
InitializeComponent();
//
//TODO: Add the constructor code here
//
}
protected:
/// <summary>
/// Clean up any resources being used.
/// </summary>
~Form2()
{
if (components)
{
delete components;
}
}
public: System::Windows::Forms::Panel^ panel1;
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->panel1 = (gcnew System::Windows::Forms::Panel());
this->SuspendLayout();
//
// panel1
//
this->panel1->BackColor = System::Drawing::SystemColors::ActiveCaptionText;
this->panel1->Location = System::Drawing::Point(106, 85);
this->panel1->Name = L"panel1";
this->panel1->Size = System::Drawing::Size(132, 118);
this->panel1->TabIndex = 0;
//
// Form2
//
this->AutoScaleDimensions = System::Drawing::SizeF(6, 13);
this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
this->ClientSize = System::Drawing::Size(284, 262);
this->Controls->Add(this->panel1);
this->Name = L"Form2";
this->Text = L"Form2";
this->ResumeLayout(false);
}
#pragma endregion
};
}
コード cpp:
// Windows Forms Application.cpp : main project file.
#include "stdafx.h"
#include "Form2.h"
#include "Form1.h"
using namespace WindowsFormsApplication;
[STAThreadAttribute]
int main(array<System::String ^> ^args)
{
// Enabling Windows XP visual effects before any controls are created
Application::EnableVisualStyles();
Application::SetCompatibleTextRenderingDefault(false);
// Create the main window and run it
Application::Run(gcnew Form1());
return 0;
}