form1.h

三次贝塞尔曲线的C程序,多于四点可通过连接保证C1连续

#pragma once


namespace GDIPlusReflectedText
{
	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::Drawing2D;

	/// <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 __gc class Form1 : public System::Windows::Forms::Form
	{	
	public:
		Form1(void)
		{
			InitializeComponent();
		}
  
	protected:
		void Dispose(Boolean disposing)
		{
			if (disposing && components)
			{
				components->Dispose();
			}
			__super::Dispose(disposing);
		}
	private: System::Windows::Forms::Button *  btnContactMe;
	private: System::Windows::Forms::Button *  btnClose;
	private: System::Windows::Forms::GroupBox *  groupBox1;








	private: System::Windows::Forms::TextBox *  txtToDisplay;
	private: System::Windows::Forms::Label *  label1;




	private: System::Windows::Forms::Button *  btnArticleList;
	private: System::Windows::Forms::PictureBox *  picText;
	private: System::Windows::Forms::Button *  btnDisplayText;

	protected:
		String* textToDisplay;

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

		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		void InitializeComponent(void)
		{
			this->btnContactMe = new System::Windows::Forms::Button();
			this->btnClose = new System::Windows::Forms::Button();
			this->groupBox1 = new System::Windows::Forms::GroupBox();
			this->txtToDisplay = new System::Windows::Forms::TextBox();
			this->label1 = new System::Windows::Forms::Label();
			this->btnArticleList = new System::Windows::Forms::Button();
			this->picText = new System::Windows::Forms::PictureBox();
			this->btnDisplayText = new System::Windows::Forms::Button();
			this->groupBox1->SuspendLayout();
			this->SuspendLayout();
			// 
			// btnContactMe
			// 
			this->btnContactMe->Location = System::Drawing::Point(340, 40);
			this->btnContactMe->Name = S"btnContactMe";
			this->btnContactMe->Size = System::Drawing::Size(80, 23);
			this->btnContactMe->TabIndex = 13;
			this->btnContactMe->Text = S"Contact &Me";
			this->btnContactMe->Click += new System::EventHandler(this, btnContactMe_Click);
			// 
			// btnClose
			// 
			this->btnClose->DialogResult = System::Windows::Forms::DialogResult::Cancel;
			this->btnClose->Location = System::Drawing::Point(340, 8);
			this->btnClose->Name = S"btnClose";
			this->btnClose->Size = System::Drawing::Size(80, 23);
			this->btnClose->TabIndex = 15;
			this->btnClose->Text = S"Cl&ose";
			this->btnClose->Click += new System::EventHandler(this, btnClose_Click);
			// 
			// groupBox1
			// 
			this->groupBox1->Controls->Add(this->txtToDisplay);
			this->groupBox1->Controls->Add(this->label1);
			this->groupBox1->Location = System::Drawing::Point(4, 0);
			this->groupBox1->Name = S"groupBox1";
			this->groupBox1->Size = System::Drawing::Size(320, 88);
			this->groupBox1->TabIndex = 11;
			this->groupBox1->TabStop = false;
			this->groupBox1->Text = S"Display Settings";
			// 
			// txtToDisplay
			// 
			this->txtToDisplay->Location = System::Drawing::Point(80, 24);
			this->txtToDisplay->Name = S"txtToDisplay";
			this->txtToDisplay->Size = System::Drawing::Size(224, 20);
			this->txtToDisplay->TabIndex = 1;
			this->txtToDisplay->Text = S"Tom Archer";
			// 
			// label1
			// 
			this->label1->Location = System::Drawing::Point(16, 24);
			this->label1->Name = S"label1";
			this->label1->Size = System::Drawing::Size(56, 23);
			this->label1->TabIndex = 0;
			this->label1->Text = S"Te&xt:";
			this->label1->TextAlign = System::Drawing::ContentAlignment::MiddleRight;
			// 
			// btnArticleList
			// 
			this->btnArticleList->Location = System::Drawing::Point(340, 64);
			this->btnArticleList->Name = S"btnArticleList";
			this->btnArticleList->Size = System::Drawing::Size(80, 23);
			this->btnArticleList->TabIndex = 14;
			this->btnArticleList->Text = S"Article &List";
			this->btnArticleList->Click += new System::EventHandler(this, btnArticleList_Click);
			// 
			// picText
			// 
			this->picText->BackColor = System::Drawing::Color::White;
			this->picText->BorderStyle = System::Windows::Forms::BorderStyle::Fixed3D;
			this->picText->Location = System::Drawing::Point(4, 96);
			this->picText->Name = S"picText";
			this->picText->Size = System::Drawing::Size(320, 160);
			this->picText->TabIndex = 16;
			this->picText->TabStop = false;
			this->picText->Paint += new System::Windows::Forms::PaintEventHandler(this, picText_Paint);
			// 
			// btnDisplayText
			// 
			this->btnDisplayText->Location = System::Drawing::Point(340, 96);
			this->btnDisplayText->Name = S"btnDisplayText";
			this->btnDisplayText->Size = System::Drawing::Size(80, 23);
			this->btnDisplayText->TabIndex = 12;
			this->btnDisplayText->Text = S"Display &Text";
			this->btnDisplayText->Click += new System::EventHandler(this, btnDisplayText_Click);
			// 
			// Form1
			// 
			this->AutoScaleBaseSize = System::Drawing::Size(5, 13);
			this->CancelButton = this->btnClose;
			this->ClientSize = System::Drawing::Size(424, 261);
			this->Controls->Add(this->btnContactMe);
			this->Controls->Add(this->btnClose);
			this->Controls->Add(this->groupBox1);
			this->Controls->Add(this->btnArticleList);
			this->Controls->Add(this->picText);
			this->Controls->Add(this->btnDisplayText);
			this->Name = S"Form1";
			this->Text = S"Managed Extensions - Using GDI+ to Render Reflected Text";
			this->groupBox1->ResumeLayout(false);
			this->ResumeLayout(false);

		}	
		private: System::Void btnClose_Click(System::Object *  sender, System::EventArgs *  e)
		{ this->Close(); }

		private: System::Void btnContactMe_Click(System::Object *  sender, System::EventArgs *  e)
		{
			System::Diagnostics::Process::Start(S"IExplore.exe", S"http://www.ArcherConsultingGroup.com/default.asp?id=1011");
		}

		private: System::Void btnArticleList_Click(System::Object *  sender, System::EventArgs *  e)
		{
			System::Diagnostics::Process::Start(S"IExplore.exe", S"http://www.codeguru.com/columns/DotNetTips");
		}

		private: System::Void btnDisplayText_Click(System::Object *  sender, System::EventArgs *  e)
		{
			// Set up internal display values
			textToDisplay = txtToDisplay->Text;
			
			// Cause a repaint of the PictureBox
			picText->Invalidate();
		}

		private: System::Void picText_Paint(System::Object *  sender, System::Windows::Forms::PaintEventArgs *  e)
		{
			if (textToDisplay)
			{
				// Obtain the Graphics object
				Graphics* g = e->Graphics;
	      
				// Instantiate the Font object based on the
				// user-supplied Font size
				System::Drawing::Font* font = 
					new System::Drawing::Font("Times New Roman", 
																		Convert::ToSingle(40), 
																		FontStyle::Regular);
        
				// Obtain the size of the text to be rendered
				SizeF textSize = g->MeasureString(textToDisplay, font);

				// Clear the Picture Box control
				g->Clear(Color::White);

				// Text will be centered on Picture Box control
				Single x = (picText->Width - textSize.Width) / 2;
        Single y = (picText->Height - (textSize.Height*1.5)) /2;

        g->TranslateTransform(x, y);

        int lineAscent = font->FontFamily->GetCellAscent(font->Style);
        int lineSpacing = font->FontFamily->GetLineSpacing(font->Style);
        Single lineHeight = font->GetHeight(g);
        Single cy = lineHeight * lineAscent / lineSpacing;

        g->DrawString(textToDisplay, font, Brushes::Black, 0, 0);
        g->ScaleTransform(1, -1.0F);
        g->DrawString(textToDisplay, font, Brushes::Gray, 0, -(cy*2));
			}
		}
	};
}