form1.h

《VC++2005编程实例》第二章的源代码

#pragma once


namespace Example {

	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 System::Drawing::Imaging;

	/// <summary>
	/// Form1 摘要
	///
	/// 警告: 如果更改此类的名称，则需要更改
	///          与此类所依赖的所有 .resx 文件关联的托管资源编译器工具的
	///          “资源文件名”属性。否则，
	///          设计器将不能与此窗体的关联
	///          本地化资源正确交互。
	/// </summary>
	public ref class Form1 : public System::Windows::Forms::Form
	{
	public:
		Form1(void)
		{
			InitializeComponent();
			//
			//TODO: 在此处添加构造函数代码
			//
		}

	protected:
		/// <summary>
		/// 清理所有正在使用的资源。
		/// </summary>
		~Form1()
		{
			if (components)
			{
				delete components;
			}
		}
	private: System::Windows::Forms::Label^  label1;
	protected: 
	private: System::Windows::Forms::TextBox^  textBox1;
	private: System::Windows::Forms::Button^  button1;
	private: System::Windows::Forms::Button^  button2;
	private: System::Windows::Forms::Button^  button3;
	private: System::Windows::Forms::Button^  button4;
	private: System::Windows::Forms::PictureBox^  pictureBox1;
	private: System::Windows::Forms::OpenFileDialog^  openFileDialog1;
	private: System::Windows::Forms::SaveFileDialog^  saveFileDialog1;

	private:
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		System::ComponentModel::Container ^components;

#pragma region Windows Form Designer generated code
		/// <summary>
		/// 设计器支持所需的方法 - 不要
		/// 使用代码编辑器修改此方法的内容。
		/// </summary>
		void InitializeComponent(void)
		{
			this->label1 = (gcnew System::Windows::Forms::Label());
			this->textBox1 = (gcnew System::Windows::Forms::TextBox());
			this->button1 = (gcnew System::Windows::Forms::Button());
			this->button2 = (gcnew System::Windows::Forms::Button());
			this->button3 = (gcnew System::Windows::Forms::Button());
			this->button4 = (gcnew System::Windows::Forms::Button());
			this->pictureBox1 = (gcnew System::Windows::Forms::PictureBox());
			this->openFileDialog1 = (gcnew System::Windows::Forms::OpenFileDialog());
			this->saveFileDialog1 = (gcnew System::Windows::Forms::SaveFileDialog());
			(cli::safe_cast<System::ComponentModel::ISupportInitialize^  >(this->pictureBox1))->BeginInit();
			this->SuspendLayout();
			// 
			// label1
			// 
			this->label1->AutoSize = true;
			this->label1->Location = System::Drawing::Point(7, 11);
			this->label1->Name = L"label1";
			this->label1->Size = System::Drawing::Size(65, 12);
			this->label1->TabIndex = 0;
			this->label1->Text = L"作者信息：";
			// 
			// textBox1
			// 
			this->textBox1->Location = System::Drawing::Point(78, 6);
			this->textBox1->Name = L"textBox1";
			this->textBox1->Size = System::Drawing::Size(303, 21);
			this->textBox1->TabIndex = 1;
			this->textBox1->Text = L"Copyright luobin 2000-2006";
			// 
			// button1
			// 
			this->button1->Location = System::Drawing::Point(9, 33);
			this->button1->Name = L"button1";
			this->button1->Size = System::Drawing::Size(89, 23);
			this->button1->TabIndex = 2;
			this->button1->Text = L"选择图像";
			this->button1->UseVisualStyleBackColor = true;
			this->button1->Click += gcnew System::EventHandler(this, &Form1::button1_Click);
			// 
			// button2
			// 
			this->button2->Location = System::Drawing::Point(104, 33);
			this->button2->Name = L"button2";
			this->button2->Size = System::Drawing::Size(89, 23);
			this->button2->TabIndex = 3;
			this->button2->Text = L"设置信息";
			this->button2->UseVisualStyleBackColor = true;
			this->button2->Click += gcnew System::EventHandler(this, &Form1::button2_Click);
			// 
			// button3
			// 
			this->button3->Location = System::Drawing::Point(199, 33);
			this->button3->Name = L"button3";
			this->button3->Size = System::Drawing::Size(89, 23);
			this->button3->TabIndex = 4;
			this->button3->Text = L"显示信息";
			this->button3->UseVisualStyleBackColor = true;
			this->button3->Click += gcnew System::EventHandler(this, &Form1::button3_Click);
			// 
			// button4
			// 
			this->button4->Location = System::Drawing::Point(294, 33);
			this->button4->Name = L"button4";
			this->button4->Size = System::Drawing::Size(89, 23);
			this->button4->TabIndex = 5;
			this->button4->Text = L"退出程序";
			this->button4->UseVisualStyleBackColor = true;
			this->button4->Click += gcnew System::EventHandler(this, &Form1::button4_Click);
			// 
			// pictureBox1
			// 
			this->pictureBox1->Anchor = static_cast<System::Windows::Forms::AnchorStyles>((((System::Windows::Forms::AnchorStyles::Top | System::Windows::Forms::AnchorStyles::Bottom) 
				| System::Windows::Forms::AnchorStyles::Left) 
				| System::Windows::Forms::AnchorStyles::Right));
			this->pictureBox1->BorderStyle = System::Windows::Forms::BorderStyle::Fixed3D;
			this->pictureBox1->Location = System::Drawing::Point(9, 63);
			this->pictureBox1->Name = L"pictureBox1";
			this->pictureBox1->Size = System::Drawing::Size(372, 139);
			this->pictureBox1->TabIndex = 6;
			this->pictureBox1->TabStop = false;
			// 
			// openFileDialog1
			// 
			this->openFileDialog1->FileName = L"openFileDialog1";
			// 
			// Form1
			// 
			this->AutoScaleDimensions = System::Drawing::SizeF(6, 12);
			this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
			this->ClientSize = System::Drawing::Size(390, 214);
			this->Controls->Add(this->pictureBox1);
			this->Controls->Add(this->button4);
			this->Controls->Add(this->button3);
			this->Controls->Add(this->button2);
			this->Controls->Add(this->button1);
			this->Controls->Add(this->textBox1);
			this->Controls->Add(this->label1);
			this->Name = L"Form1";
			this->StartPosition = System::Windows::Forms::FormStartPosition::CenterScreen;
			this->Text = L"演示设置图像作者信息";
			(cli::safe_cast<System::ComponentModel::ISupportInitialize^  >(this->pictureBox1))->EndInit();
			this->ResumeLayout(false);
			this->PerformLayout();

		}
#pragma endregion
//选择图像
private: System::Void button1_Click(System::Object^  sender, System::EventArgs^  e) {
    this->openFileDialog1->Filter="所有图像文件(JPeg, Gif, Bmp, etc.)|*.jpg;*.jpeg; *.gif;*.bmp;*.tif; *.tiff; *.png| JPeg图像文件(*.jpg;*.jpeg) |*.jpg;*.jpeg |GIF图像文件(*.gif)|*.gif |BMP图像文件(*.bmp)|*.bmp|Tiff图像文件(*.tif;*.tiff)| *.tif;*.tiff|Png图像文件(*.png)| *.png |所有文件(*.*)|*.*";
    this->openFileDialog1->Multiselect = false;
	if(this->openFileDialog1->ShowDialog()==System::Windows::Forms::DialogResult::OK)
    {
       String^ MyFileName = this->openFileDialog1->FileName;
	   this->pictureBox1->Image = Image::FromFile(MyFileName);
    }   
}
 //设置信息
private: System::Void button2_Click(System::Object^  sender, System::EventArgs^  e) {
    String^ MyFileName;
    array<PropertyItem^>^ MyItems;
	array<unsigned char>^ MyAuthor = gcnew array<unsigned char>(129);
    String^ MyString;
    int i = 0;
    if (this->pictureBox1->Image == nullptr)
        return;
    if (this->textBox1->Text == nullptr)
        return;
    this->saveFileDialog1->Filter = "所有JPG图像文件(*.jpg)|*.jpg";
	if (this->saveFileDialog1->ShowDialog() == System::Windows::Forms::DialogResult::Cancel)
        return;
    try
    {
        MyFileName=this->saveFileDialog1->FileName;
        MyString=this->textBox1->Text;
        for(i=0;i<MyString->Length;i++)
			MyAuthor[i]=(unsigned char)MyString[i];
        MyItems=this->pictureBox1->Image->PropertyItems;     
        MyItems[0]->Id=304;
        MyItems[0]->Len=128;
        //数据类型为字符串
        MyItems[0]->Type=2;
        MyItems[0]->Value=MyAuthor;
        //设置图像属性
        this->pictureBox1->Image->SetPropertyItem(MyItems[0]);
		this->pictureBox1->Image->Save(MyFileName,System::Drawing::Imaging::ImageFormat::Jpeg);
		MessageBox::Show("设置图像作者信息操作成功！", "信息提示", MessageBoxButtons::OK, MessageBoxIcon::Information);
    }
    catch (Exception^ MyEx)
    {
		MessageBox::Show(MyEx->Message,"信息提示", MessageBoxButtons::OK, MessageBoxIcon::Information);
    }   
}
//显示信息
private: System::Void button3_Click(System::Object^  sender, System::EventArgs^  e) {
   array<PropertyItem^>^ MyItems;
   System::Text::ASCIIEncoding^ MyEncoding;
   String^ MyString;
   if(this->pictureBox1->Image==nullptr)
      return;
   try
   {
      MyItems=this->pictureBox1->Image->PropertyItems;
      MyItems[0]=this->pictureBox1->Image->GetPropertyItem(304);
      MyEncoding=gcnew System::Text::ASCIIEncoding();
      MyString=MyEncoding->GetString(MyItems[0]->Value);
	  MessageBox::Show("图像作者："+MyString,"信息提示", MessageBoxButtons::OK, MessageBoxIcon::Information);   
    }
    catch (Exception^ MyEx)
    {
		MessageBox::Show(MyEx->Message, "信息提示", MessageBoxButtons::OK, MessageBoxIcon::Information);
    }  
}
//退出程序
private: System::Void button4_Click(System::Object^  sender, System::EventArgs^  e) {
   this->Close();
}
};
}