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;

	/// <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::Panel^  panel1;
	protected: 
	private: System::Windows::Forms::HScrollBar^  hScrollBar1;
	private: System::Windows::Forms::VScrollBar^  vScrollBar1;
	private: System::Windows::Forms::PictureBox^  pictureBox1;
	private: System::Windows::Forms::OpenFileDialog^  openFileDialog1;
	private: System::Windows::Forms::Button^  button1;
	private: System::Windows::Forms::Button^  button2;

	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->panel1 = (gcnew System::Windows::Forms::Panel());
			this->hScrollBar1 = (gcnew System::Windows::Forms::HScrollBar());
			this->vScrollBar1 = (gcnew System::Windows::Forms::VScrollBar());
			this->pictureBox1 = (gcnew System::Windows::Forms::PictureBox());
			this->openFileDialog1 = (gcnew System::Windows::Forms::OpenFileDialog());
			this->button1 = (gcnew System::Windows::Forms::Button());
			this->button2 = (gcnew System::Windows::Forms::Button());
			this->panel1->SuspendLayout();
			(cli::safe_cast<System::ComponentModel::ISupportInitialize^  >(this->pictureBox1))->BeginInit();
			this->SuspendLayout();
			// 
			// panel1
			// 
			this->panel1->BorderStyle = System::Windows::Forms::BorderStyle::Fixed3D;
			this->panel1->Controls->Add(this->hScrollBar1);
			this->panel1->Controls->Add(this->vScrollBar1);
			this->panel1->Controls->Add(this->pictureBox1);
			this->panel1->Location = System::Drawing::Point(4, 3);
			this->panel1->Name = L"panel1";
			this->panel1->Size = System::Drawing::Size(383, 176);
			this->panel1->TabIndex = 0;
			// 
			// hScrollBar1
			// 
			this->hScrollBar1->Location = System::Drawing::Point(0, 155);
			this->hScrollBar1->Name = L"hScrollBar1";
			this->hScrollBar1->Size = System::Drawing::Size(364, 17);
			this->hScrollBar1->TabIndex = 2;
			this->hScrollBar1->Scroll += gcnew System::Windows::Forms::ScrollEventHandler(this, &Form1::hScrollBar1_Scroll);
			// 
			// vScrollBar1
			// 
			this->vScrollBar1->Location = System::Drawing::Point(364, 2);
			this->vScrollBar1->Name = L"vScrollBar1";
			this->vScrollBar1->Size = System::Drawing::Size(17, 174);
			this->vScrollBar1->TabIndex = 1;
			this->vScrollBar1->Scroll += gcnew System::Windows::Forms::ScrollEventHandler(this, &Form1::vScrollBar1_Scroll);
			// 
			// pictureBox1
			// 
			this->pictureBox1->Location = System::Drawing::Point(7, 4);
			this->pictureBox1->Name = L"pictureBox1";
			this->pictureBox1->Size = System::Drawing::Size(100, 50);
			this->pictureBox1->SizeMode = System::Windows::Forms::PictureBoxSizeMode::AutoSize;
			this->pictureBox1->TabIndex = 0;
			this->pictureBox1->TabStop = false;
			// 
			// openFileDialog1
			// 
			this->openFileDialog1->FileName = L"openFileDialog1";
			// 
			// button1
			// 
			this->button1->Location = System::Drawing::Point(54, 185);
			this->button1->Name = L"button1";
			this->button1->Size = System::Drawing::Size(121, 23);
			this->button1->TabIndex = 1;
			this->button1->Text = L"浏览图像文件";
			this->button1->UseVisualStyleBackColor = true;
			this->button1->Click += gcnew System::EventHandler(this, &Form1::button1_Click);
			// 
			// button2
			// 
			this->button2->Location = System::Drawing::Point(217, 185);
			this->button2->Name = L"button2";
			this->button2->Size = System::Drawing::Size(121, 23);
			this->button2->TabIndex = 2;
			this->button2->Text = L"关闭应用程序";
			this->button2->UseVisualStyleBackColor = true;
			this->button2->Click += gcnew System::EventHandler(this, &Form1::button2_Click);
			// 
			// 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->button2);
			this->Controls->Add(this->button1);
			this->Controls->Add(this->panel1);
			this->Name = L"Form1";
			this->StartPosition = System::Windows::Forms::FormStartPosition::CenterScreen;
			this->Text = L"演示使用滚动条浏览大图像";
			this->panel1->ResumeLayout(false);
			this->panel1->PerformLayout();
			(cli::safe_cast<System::ComponentModel::ISupportInitialize^  >(this->pictureBox1))->EndInit();
			this->ResumeLayout(false);

		}
#pragma endregion
//处理垂直滚动事件
private: System::Void vScrollBar1_Scroll(System::Object^  sender, System::Windows::Forms::ScrollEventArgs^  e) {
			  this->pictureBox1->Top=-this->vScrollBar1->Value;
			 }
//处理水平滚动事件
private: System::Void hScrollBar1_Scroll(System::Object^  sender, System::Windows::Forms::ScrollEventArgs^  e) {
			  this->pictureBox1->Left=-this->hScrollBar1->Value;           
		 }
//浏览图像文件
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(*.*)|*.*";
	if(this->openFileDialog1->ShowDialog()==System::Windows::Forms::DialogResult::OK)
    {
       String^ MyFileName=this->openFileDialog1->FileName;            
	   this->pictureBox1->Image=Image::FromFile(MyFileName);
	   this->hScrollBar1->Maximum=this->pictureBox1->Width-panel1->Width+vScrollBar1->Width;
	   this->vScrollBar1->Maximum=this->pictureBox1->Height-panel1->Height+hScrollBar1->Height;
    }

		 }
 //关闭应用程序
private: System::Void button2_Click(System::Object^  sender, System::EventArgs^  e) {
			 this->Close();
		 }
};
}