csharpexample.cs

一个解析数学表达式的c++程序

using System ;
using System.ComponentModel ;
using System.Runtime.InteropServices ;
using System.Windows.Forms ;
using MTPARSERCOMLib ;


namespace CSharpExample
{
	
	public class CSharpExample : Form
	{
		[ DllImport( "kernel32.dll" )]
		public static extern uint GetTickCount();

		#region Private Fields
		private Container components = null;
		private Button DefineMacro = null;
		private Button Index = null;
		private TextBox VarZ = null;
		private TextBox VarY = null;
		private TextBox VarX = null;
		private TextBox Result = null;
		private TextBox Msg = null;
		private Button Benchmark = null;
		private TextBox Expr = null;
		private Button Evaluate = null;
		private GroupBox Frame1 = null;
		private GroupBox Frame2 = null;
		private Label Label1 = null;
		private Label Label2 = null;
		private Label Label3 = null;
		private Label Label4 = null;

		private MacroDefinition _macroDefinition = null ;
		
		private MTParser m_parser = new MTParser();		
		private MTDouble m_x = new MTDouble();
		private MTDouble m_y = new MTDouble();
		private MTDouble m_z = new MTDouble();		

		#endregion

		public CSharpExample()
		{
			_macroDefinition = new MacroDefinition();
			InitializeComponent();

            this.AcceptButton = this.Evaluate;

			m_x.create("x", 0);
			m_y.create("y", 0);
			m_z.create("z", 0);
		}

		#region Dispose Method
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if(components != null)
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing);
		}
		#endregion

		#region Windows Form Designer generated code

		private void InitializeComponent()
		{
			this.DefineMacro = new System.Windows.Forms.Button();
			this.Index = new System.Windows.Forms.Button();
			this.VarZ = new System.Windows.Forms.TextBox();
			this.VarY = new System.Windows.Forms.TextBox();
			this.VarX = new System.Windows.Forms.TextBox();
			this.Result = new System.Windows.Forms.TextBox();
			this.Msg = new System.Windows.Forms.TextBox();
			this.Benchmark = new System.Windows.Forms.Button();
			this.Expr = new System.Windows.Forms.TextBox();
			this.Evaluate = new System.Windows.Forms.Button();
			this.Frame1 = new System.Windows.Forms.GroupBox();
			this.Frame2 = new System.Windows.Forms.GroupBox();
			this.Label1 = new System.Windows.Forms.Label();
			this.Label2 = new System.Windows.Forms.Label();
			this.Label3 = new System.Windows.Forms.Label();
			this.Label4 = new System.Windows.Forms.Label();
			this.Frame2.SuspendLayout();
			this.SuspendLayout();
			// 
			// DefineMacro
			// 
			this.DefineMacro.Location = new System.Drawing.Point(328, 208);
			this.DefineMacro.Name = "DefineMacro";
			this.DefineMacro.Size = new System.Drawing.Size(89, 25);
			this.DefineMacro.TabIndex = 15;
			this.DefineMacro.Text = "Define Macro";
			this.DefineMacro.Click += new System.EventHandler(this.DefineMacro_Click);
			// 
			// Index
			// 
			this.Index.Location = new System.Drawing.Point(328, 176);
			this.Index.Name = "Index";
			this.Index.Size = new System.Drawing.Size(89, 25);
			this.Index.TabIndex = 8;
			this.Index.Text = "Index";
			this.Index.Click += new System.EventHandler(this.Index_Click);
			// 
			// VarZ
			// 
			this.VarZ.Location = new System.Drawing.Point(56, 104);
			this.VarZ.Name = "VarZ";
			this.VarZ.Size = new System.Drawing.Size(65, 20);
			this.VarZ.TabIndex = 7;
			this.VarZ.Text = "0";
			// 
			// VarY
			// 
			this.VarY.Location = new System.Drawing.Point(56, 80);
			this.VarY.Name = "VarY";
			this.VarY.Size = new System.Drawing.Size(65, 20);
			this.VarY.TabIndex = 6;
			this.VarY.Text = "0";
			// 
			// VarX
			// 
			this.VarX.Location = new System.Drawing.Point(56, 56);
			this.VarX.Name = "VarX";
			this.VarX.Size = new System.Drawing.Size(65, 20);
			this.VarX.TabIndex = 5;
			this.VarX.Text = "0";
			// 
			// Result
			// 
			this.Result.Enabled = false;
			this.Result.Location = new System.Drawing.Point(256, 96);
			this.Result.Name = "Result";
			this.Result.ReadOnly = true;
			this.Result.Size = new System.Drawing.Size(137, 20);
			this.Result.TabIndex = 4;
			this.Result.Text = "0";
			// 
			// Msg
			// 
			this.Msg.BackColor = System.Drawing.SystemColors.Menu;
			this.Msg.BorderStyle = System.Windows.Forms.BorderStyle.None;
			this.Msg.Enabled = false;
			this.Msg.Location = new System.Drawing.Point(8, 168);
			this.Msg.Multiline = true;
			this.Msg.Name = "Msg";
			this.Msg.ReadOnly = true;
			this.Msg.Size = new System.Drawing.Size(289, 57);
			this.Msg.TabIndex = 3;
			this.Msg.Text = "";
			// 
			// Benchmark
			// 
			this.Benchmark.Location = new System.Drawing.Point(136, 104);
			this.Benchmark.Name = "Benchmark";
			this.Benchmark.Size = new System.Drawing.Size(97, 41);
			this.Benchmark.TabIndex = 2;
			this.Benchmark.Text = "Benchmark";
			this.Benchmark.Click += new System.EventHandler(this.Benchmark_Click);
			// 
			// Expr
			// 
			this.Expr.Location = new System.Drawing.Point(16, 16);
			this.Expr.Name = "Expr";
			this.Expr.Size = new System.Drawing.Size(393, 20);
			this.Expr.TabIndex = 1;
			this.Expr.Text = "pi*min(x+y+sin(z)/2^3-40.9988*2, avg(y,x*10,3,5))";
			// 
			// Evaluate
			// 
			this.Evaluate.Location = new System.Drawing.Point(136, 56);
			this.Evaluate.Name = "Evaluate";
			this.Evaluate.Size = new System.Drawing.Size(97, 41);
			this.Evaluate.TabIndex = 0;
			this.Evaluate.Text = "Evaluate";			
			this.Evaluate.Click += new System.EventHandler(this.Evaluate_Click);
			// 
			// Frame1
			// 
			this.Frame1.Location = new System.Drawing.Point(248, 72);
			this.Frame1.Name = "Frame1";
			this.Frame1.Size = new System.Drawing.Size(161, 65);
			this.Frame1.TabIndex = 10;
			this.Frame1.TabStop = false;
			this.Frame1.Text = "Result";
			// 
			// Frame2
			// 
			this.Frame2.Controls.Add(this.Label1);
			this.Frame2.Controls.Add(this.Label2);
			this.Frame2.Controls.Add(this.Label3);
			this.Frame2.Location = new System.Drawing.Point(8, 0);
			this.Frame2.Name = "Frame2";
			this.Frame2.Size = new System.Drawing.Size(409, 161);
			this.Frame2.TabIndex = 11;
			this.Frame2.TabStop = false;
			// 
			// Label1
			// 
			this.Label1.Location = new System.Drawing.Point(8, 64);
			this.Label1.Name = "Label1";
			this.Label1.Size = new System.Drawing.Size(33, 25);
			this.Label1.TabIndex = 14;
			this.Label1.Text = "X =";
			// 
			// Label2
			// 
			this.Label2.Location = new System.Drawing.Point(8, 88);
			this.Label2.Name = "Label2";
			this.Label2.Size = new System.Drawing.Size(33, 25);
			this.Label2.TabIndex = 13;
			this.Label2.Text = "Y =";
			// 
			// Label3
			// 
			this.Label3.Location = new System.Drawing.Point(8, 112);
			this.Label3.Name = "Label3";
			this.Label3.Size = new System.Drawing.Size(33, 25);
			this.Label3.TabIndex = 12;
			this.Label3.Text = "Z =";
			// 
			// Label4
			// 
			this.Label4.Location = new System.Drawing.Point(264, 80);
			this.Label4.Name = "Label4";
			this.Label4.Size = new System.Drawing.Size(73, 17);
			this.Label4.TabIndex = 9;
			this.Label4.Text = "Result:";
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.ClientSize = new System.Drawing.Size(426, 246);
			this.Controls.Add(this.DefineMacro);
			this.Controls.Add(this.Index);
			this.Controls.Add(this.VarZ);
			this.Controls.Add(this.VarY);
			this.Controls.Add(this.VarX);
			this.Controls.Add(this.Result);
			this.Controls.Add(this.Msg);
			this.Controls.Add(this.Benchmark);
			this.Controls.Add(this.Expr);
			this.Controls.Add(this.Evaluate);
			this.Controls.Add(this.Frame1);
			this.Controls.Add(this.Frame2);
			this.Controls.Add(this.Label4);
			this.Font = new System.Drawing.Font("Arial", 8F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
			this.Location = new System.Drawing.Point(4, 30);
			this.Name = "MTParserCOMDemo";
			this.Text = "MTParserCOM: C# client demo";
			this.Load += new System.EventHandler(this.form_load);
			this.Frame2.ResumeLayout(false);
			this.ResumeLayout(false);

		}
		#endregion

		[STAThread]
		static void Main()
		{
			Application.Run(new CSharpExample());
		}

		void form_load(Object _sender, EventArgs _e1) 
		{			
			try
			{				
				_macroDefinition.SetParser( m_parser ) ;

				// Define the variables and keep the keys to speed up value assignations
				m_parser.defineVar(m_x as IMTVariable);
				m_parser.defineVar(m_y as IMTVariable);