windows计算器

usingSystem;usingSystem.Drawing;usingSystem.Win运维

using System;

using System.Drawing;

using System.Windows;

using System.Windows.Forms;

using System.Collections;

using System.ComponentModel;

using System.Data;

namespace comput {     /// <summary>     /// 这是一个计算器的简单实现。     /// </summary>

    public class Form1 : System.Windows.Forms.Form     {         #region 控件声明         private System.Windows.Forms.TextBox txtShow;         private System.Windows.Forms.GroupBox groupBox1;         private System.Windows.Forms.Button btn_rev;         private System.Windows.Forms.Button btn_dot;         private System.Windows.Forms.Button btn_add;         private System.Windows.Forms.Button btn_equ;         private System.Windows.Forms.Button btn_sign;         private System.Windows.Forms.Button btn_sub;         private System.Windows.Forms.Button btn_mul;         private System.Windows.Forms.Button btn_0;         private System.Windows.Forms.Button btn_3;         private System.Windows.Forms.Button btn_2;         private System.Windows.Forms.Button btn_1;         private System.Windows.Forms.Button btn_6;         private System.Windows.Forms.Button btn_5;         private System.Windows.Forms.Button btn_4;         private System.Windows.Forms.Button btn_sqrt;         private System.Windows.Forms.Button btn_div;         private System.Windows.Forms.Button btn_7;         private System.Windows.Forms.Button btn_8;         private System.Windows.Forms.Button btn_9;         private System.Windows.Forms.MainMenu mainMenu1;         private System.Windows.Forms.MenuItem menuItem1;         private System.Windows.Forms.Button btn_sqr;         private System.Windows.Forms.MenuItem menuItem2;         private System.Windows.Forms.MenuItem menuItem3;         private System.Windows.Forms.MenuItem menuItem4;         private System.Windows.Forms.MenuItem menuItem5;         private System.Windows.Forms.MenuItem menuItem6;         private System.Windows.Forms.Button c;         private System.Windows.Forms.Button ce;         private System.Windows.Forms.MenuItem menuItem8;         private System.Windows.Forms.MenuItem menuItem9;         private System.Windows.Forms.MenuItem menuItem10;         /// <summary>         /// 必需的设计器变量。         /// </summary>         private System.ComponentModel.Container components = null;         public Form1()         {             //             // Windows 窗体设计器支持所必需的             //             InitializeComponent();

            //             // TODO: 在 InitializeComponent 调用后添加任何构造函数代码             //         }

        /// <summary>         /// 清理所有正在使用的资源。         /// </summary>         protected override void Dispose( bool disposing )         {             if( disposing )             {                 if (components != null)                 {                     components.Dispose();                 }             }             base.Dispose( disposing );         }        #endregion

        #region 各控件的属性的方法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>         private void InitializeComponent()         {             System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(Form1));             this.txtShow = new System.Windows.Forms.TextBox();             this.groupBox1 = new System.Windows.Forms.GroupBox();             this.c = new System.Windows.Forms.Button();             this.ce = new System.Windows.Forms.Button();             this.btn_rev = new System.Windows.Forms.Button();             this.btn_dot = new System.Windows.Forms.Button();             this.btn_add = new System.Windows.Forms.Button();             this.btn_equ = new System.Windows.Forms.Button();             this.btn_sign = new System.Windows.Forms.Button();             this.btn_sub = new System.Windows.Forms.Button();             this.btn_mul = new System.Windows.Forms.Button();             this.btn_0 = new System.Windows.Forms.Button();             this.btn_3 = new System.Windows.Forms.Button();             this.btn_2 = new System.Windows.Forms.Button();             this.btn_1 = new System.Windows.Forms.Button();             this.btn_6 = new System.Windows.Forms.Button();             this.btn_5 = new System.Windows.Forms.Button();             this.btn_4 = new System.Windows.Forms.Button();             this.btn_sqrt = new System.Windows.Forms.Button();             this.btn_div = new System.Windows.Forms.Button();             this.btn_7 = new System.Windows.Forms.Button();             this.btn_8 = new System.Windows.Forms.Button();             this.btn_9 = new System.Windows.Forms.Button();             this.btn_sqr = new System.Windows.Forms.Button();             this.mainMenu1 = new System.Windows.Forms.MainMenu();             this.menuItem1 = new System.Windows.Forms.MenuItem();             this.menuItem2 = new System.Windows.Forms.MenuItem();             this.menuItem3 = new System.Windows.Forms.MenuItem();             this.menuItem4 = new System.Windows.Forms.MenuItem();             this.menuItem5 = new System.Windows.Forms.MenuItem();             this.menuItem6 = new System.Windows.Forms.MenuItem();             this.menuItem8 = new System.Windows.Forms.MenuItem();             this.menuItem9 = new System.Windows.Forms.MenuItem();             this.menuItem10 = new System.Windows.Forms.MenuItem();             this.groupBox1.SuspendLayout();             this.SuspendLayout();             //             // txtShow             //             this.txtShow.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(192)), ((System.Byte)(192)), ((System.Byte)(255)));             this.txtShow.Font = new System.Drawing.Font("宋体", 10.5F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));             this.txtShow.ForeColor = System.Drawing.Color.Purple;             this.txtShow.Location = new System.Drawing.Point(25, 8);             this.txtShow.Name = "txtShow";             this.txtShow.Size = new System.Drawing.Size(228, 23);             this.txtShow.TabIndex = 1;             this.txtShow.Text = "0.";             this.txtShow.TextAlign = System.Windows.Forms.HorizontalAlignment.Right;             //             // groupBox1             //             this.groupBox1.Controls.Add(this.c);             this.groupBox1.Controls.Add(this.ce);             this.groupBox1.Controls.Add(this.btn_rev);             this.groupBox1.Controls.Add(this.btn_dot);             this.groupBox1.Controls.Add(this.btn_add);             this.groupBox1.Controls.Add(this.btn_equ);             this.groupBox1.Controls.Add(this.btn_sign);             this.groupBox1.Controls.Add(this.btn_sub);             this.groupBox1.Controls.Add(this.btn_mul);             this.groupBox1.Controls.Add(this.btn_0);             this.groupBox1.Controls.Add(this.btn_3);             this.groupBox1.Controls.Add(this.btn_2);             this.groupBox1.Controls.Add(this.btn_1);             this.groupBox1.Controls.Add(this.btn_6);             this.groupBox1.Controls.Add(this.btn_5);             this.groupBox1.Controls.Add(this.btn_4);             this.groupBox1.Controls.Add(this.btn_sqrt);             this.groupBox1.Controls.Add(this.btn_div);             this.groupBox1.Controls.Add(this.btn_7);             this.groupBox1.Controls.Add(this.btn_8);             this.groupBox1.Controls.Add(this.btn_9);             this.groupBox1.Controls.Add(this.btn_sqr);             this.groupBox1.Location = new System.Drawing.Point(24, 40);             this.groupBox1.Name = "groupBox1";             this.groupBox1.Size = new System.Drawing.Size(232, 184);             this.groupBox1.TabIndex = 21;             this.groupBox1.TabStop = false;             this.groupBox1.Text = "计算机区";             //             // c             //             this.c.Font = new System.Drawing.Font("宋体", 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));             this.c.ForeColor = System.Drawing.Color.Red;             this.c.Location = new System.Drawing.Point(178, 48);             this.c.Name = "c";             this.c.Size = new System.Drawing.Size(36, 61);             this.c.TabIndex = 41;             this.c.Text = "C";             this.c.Click += new System.EventHandler(this.btn_Oper);             //             // ce             //             this.ce.Font = new System.Drawing.Font("宋体", 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));             this.ce.ForeColor = System.Drawing.Color.Red;             this.ce.Location = new System.Drawing.Point(138, 16);             this.ce.Name = "ce";             this.ce.Size = new System.Drawing.Size(76, 29);             this.ce.TabIndex = 40;             this.ce.Text = "CE";             this.ce.Click += new System.EventHandler(this.btn_Oper);             //             // btn_rev             //             this.btn_rev.Font = new System.Drawing.Font("宋体", 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));             this.btn_rev.ForeColor = System.Drawing.Color.Blue;             this.btn_rev.Location = new System.Drawing.Point(178, 112);             this.btn_rev.Name = "btn_rev";             this.btn_rev.Size = new System.Drawing.Size(36, 29);             this.btn_rev.TabIndex = 39;             this.btn_rev.Text = "1/x";             this.btn_rev.Click += new System.EventHandler(this.btn_Oper);             //             // btn_dot             //             this.btn_dot.Font = new System.Drawing.Font("宋体", 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));             this.btn_dot.Location = new System.Drawing.Point(98, 144);             this.btn_dot.Name = "btn_dot";             this.btn_dot.Size = new System.Drawing.Size(36, 29);             this.btn_dot.TabIndex = 38;             this.btn_dot.Tag = "0";             this.btn_dot.Text = ".";             this.btn_dot.Click += new System.EventHandler(this.btn_Oper);             //             // btn_add             //             this.btn_add.Font = new System.Drawing.Font("宋体", 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));             this.btn_add.ForeColor = System.Drawing.Color.Red;             this.btn_add.Location = new System.Drawing.Point(138, 144);             this.btn_add.Name = "btn_add";             this.btn_add.Size = new System.Drawing.Size(36, 29);             this.btn_add.TabIndex = 37;             this.btn_add.Text = "+";             this.btn_add.Click += new System.EventHandler(this.btn_Oper);             //             // btn_equ             //             this.btn_equ.Font = new System.Drawing.Font("宋体", 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));             this.btn_equ.ForeColor = System.Drawing.Color.Red;             this.btn_equ.Location = new System.Drawing.Point(178, 144);             this.btn_equ.Name = "btn_equ";             this.btn_equ.Size = new System.Drawing.Size(36, 29);             this.btn_equ.TabIndex = 36;             this.btn_equ.Text = "=";             this.btn_equ.Click += new System.EventHandler(this.btn_equ_Click);             //             // btn_sign             //             this.btn_sign.Font = new System.Drawing.Font("宋体", 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));             this.btn_sign.ForeColor = System.Drawing.Color.Blue;             this.btn_sign.Location = new System.Drawing.Point(58, 144);             this.btn_sign.Name = "btn_sign";             this.btn_sign.Size = new System.Drawing.Size(36, 29);             this.btn_sign.TabIndex = 35;             this.btn_sign.Text = "+/-";             this.btn_sign.Click += new System.EventHandler(this.btn_Oper);             //             // btn_sub             //             this.btn_sub.Font = new System.Drawing.Font("宋体", 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));             this.btn_sub.ForeColor = System.Drawing.Color.Red;             this.btn_sub.Location = new System.Drawing.Point(138, 112);             this.btn_sub.Name = "btn_sub";             this.btn_sub.Size = new System.Drawing.Size(36, 29);             this.btn_sub.TabIndex = 34;             this.btn_sub.Text = "-";             this.btn_sub.Click += new System.EventHandler(this.btn_Oper);             //             // btn_mul             //             this.btn_mul.Font = new System.Drawing.Font("宋体", 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));             this.btn_mul.ForeColor = System.Drawing.Color.Red;             this.btn_mul.Location = new System.Drawing.Point(138, 80);             this.btn_mul.Name = "btn_mul";             this.btn_mul.Size = new System.Drawing.Size(36, 29);             this.btn_mul.TabIndex = 33;             this.btn_mul.Text = "*";             this.btn_mul.Click += new System.EventHandler(this.btn_Oper);             //             // btn_0             //             this.btn_0.Font = new System.Drawing.Font("宋体", 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));             this.btn_0.ForeColor = System.Drawing.Color.Blue;             this.btn_0.Location = new System.Drawing.Point(18, 144);             this.btn_0.Name = "btn_0";             this.btn_0.Size = new System.Drawing.Size(36, 29);             this.btn_0.TabIndex = 32;             this.btn_0.Tag = "0";             this.btn_0.Text = "0";             this.btn_0.Click += new System.EventHandler(this.btn_0_Click);             //             // btn_3             //             this.btn_3.Font = new System.Drawing.Font("宋体", 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));             this.btn_3.ForeColor = System.Drawing.Color.Blue;             this.btn_3.Location = new System.Drawing.Point(98, 112);             this.btn_3.Name = "btn_3";             this.btn_3.Size = new System.Drawing.Size(36, 29);             this.btn_3.TabIndex = 31;             this.btn_3.Tag = "3";             this.btn_3.Text = "3";             this.btn_3.Click += new System.EventHandler(this.btn_0_Click);             //             // btn_2             //             this.btn_2.Font = new System.Drawing.Font("宋体", 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));             this.btn_2.ForeColor = System.Drawing.Color.Blue;             this.btn_2.Location = new System.Drawing.Point(58, 112);             this.btn_2.Name = "btn_2";             this.btn_2.Size = new System.Drawing.Size(36, 29);             this.btn_2.TabIndex = 30;             this.btn_2.Tag = "2";             this.btn_2.Text = "2";             this.btn_2.Click += new System.EventHandler(this.btn_0_Click);             //             // btn_1             //             this.btn_1.Font = new System.Drawing.Font("宋体", 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));             this.btn_1.ForeColor = System.Drawing.Color.Blue;             this.btn_1.Location = new System.Drawing.Point(18, 112);             this.btn_1.Name = "btn_1";             this.btn_1.Size = new System.Drawing.Size(36, 29);             this.btn_1.TabIndex = 29;             this.btn_1.Tag = "1";             this.btn_1.Text = "1";             this.btn_1.Click += new System.EventHandler(this.btn_0_Click);             //             // btn_6             //             this.btn_6.Font = new System.Drawing.Font("宋体", 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));             this.btn_6.ForeColor = System.Drawing.Color.Blue;             this.btn_6.Location = new System.Drawing.Point(98, 80);             this.btn_6.Name = "btn_6";             this.btn_6.Size = new System.Drawing.Size(36, 29);             this.btn_6.TabIndex = 28;             this.btn_6.Tag = "6";             this.btn_6.Text = "6";             this.btn_6.Click += new System.EventHandler(this.btn_0_Click);             //             // btn_5             //             this.btn_5.Font = new System.Drawing.Font("宋体", 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));             this.btn_5.ForeColor = System.Drawing.Color.Blue;             this.btn_5.Location = new System.Drawing.Point(58, 80);             this.btn_5.Name = "btn_5";             this.btn_5.Size = new System.Drawing.Size(36, 29);             this.btn_5.TabIndex = 27;             this.btn_5.Tag = "5";             this.btn_5.Text = "5";             this.btn_5.Click += new System.EventHandler(this.btn_0_Click);             //             // btn_4             //             this.btn_4.Font = new System.Drawing.Font("宋体", 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));             this.btn_4.ForeColor = System.Drawing.Color.Blue;             this.btn_4.Location = new System.Drawing.Point(18, 80);             this.btn_4.Name = "btn_4";             this.btn_4.Size = new System.Drawing.Size(36, 29);             this.btn_4.TabIndex = 26;             this.btn_4.Tag = "4";             this.btn_4.Text = "4";             this.btn_4.Click += new System.EventHandler(this.btn_0_Click);             //             // btn_sqrt             //             this.btn_sqrt.Font = new System.Drawing.Font("宋体", 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));             this.btn_sqrt.ForeColor = System.Drawing.Color.Blue;             this.btn_sqrt.Location = new System.Drawing.Point(18, 16);             this.btn_sqrt.Name = "btn_sqrt";             this.btn_sqrt.Size = new System.Drawing.Size(76, 29);             this.btn_sqrt.TabIndex = 25;             this.btn_sqrt.Text = "sqrt";             this.btn_sqrt.Click += new System.EventHandler(this.btn_Oper);             //             // btn_div             //             this.btn_div.Font = new System.Drawing.Font("宋体", 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));             this.btn_div.ForeColor = System.Drawing.Color.Red;             this.btn_div.Location = new System.Drawing.Point(138, 48);             this.btn_div.Name = "btn_div";             this.btn_div.Size = new System.Drawing.Size(36, 29);             this.btn_div.TabIndex = 24;             this.btn_div.Text = "/";             this.btn_div.Click += new System.EventHandler(this.btn_Oper);             //             // btn_7             //             this.btn_7.Font = new System.Drawing.Font("宋体", 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));             this.btn_7.ForeColor = System.Drawing.Color.Blue;             this.btn_7.Location = new System.Drawing.Point(18, 48);             this.btn_7.Name = "btn_7";             this.btn_7.Size = new System.Drawing.Size(36, 29);             this.btn_7.TabIndex = 23;             this.btn_7.Tag = "7";             this.btn_7.Text = "7";             this.btn_7.Click += new System.EventHandler(this.btn_0_Click);             //             // btn_8             //             this.btn_8.Font = new System.Drawing.Font("宋体", 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));             this.btn_8.ForeColor = System.Drawing.Color.Blue;             this.btn_8.Location = new System.Drawing.Point(58, 48);             this.btn_8.Name = "btn_8";             this.btn_8.Size = new System.Drawing.Size(36, 29);             this.btn_8.TabIndex = 22;             this.btn_8.Tag = "8";             this.btn_8.Text = "8";             this.btn_8.Click += new System.EventHandler(this.btn_0_Click);             //             // btn_9             //             this.btn_9.Font = new System.Drawing.Font("宋体", 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));             this.btn_9.ForeColor = System.Drawing.Color.Blue;             this.btn_9.Location = new System.Drawing.Point(98, 48);             this.btn_9.Name = "btn_9";             this.btn_9.Size = new System.Drawing.Size(36, 29);             this.btn_9.TabIndex = 21;             this.btn_9.Tag = "9";             this.btn_9.Text = "9";             this.btn_9.Click += new System.EventHandler(this.btn_0_Click);             //             // btn_sqr             //             this.btn_sqr.Font = new System.Drawing.Font("宋体", 10.5F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));             this.btn_sqr.ForeColor = System.Drawing.Color.Blue;             this.btn_sqr.Location = new System.Drawing.Point(98, 16);             this.btn_sqr.Name = "btn_sqr";             this.btn_sqr.Size = new System.Drawing.Size(36, 29);             this.btn_sqr.TabIndex = 19;             this.btn_sqr.Text = "sqr";             this.btn_sqr.Click += new System.EventHandler(this.btn_Oper);             //             // mainMenu1             //             this.mainMenu1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {                                                                                       this.menuItem8,                                                                                       this.menuItem1,                                                                                       this.menuItem4});             //             // menuItem1             //             this.menuItem1.Index = 1;             this.menuItem1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {                                                                                       this.menuItem2,                                                                                       this.menuItem3});             this.menuItem1.Text = "编辑(&E)";             //             // menuItem2             //             this.menuItem2.Index = 0;             this.menuItem2.Text = "复制(&C)";             this.menuItem2.Click += new System.EventHandler(this.menuItem2_Click);             //             // menuItem3             //             this.menuItem3.Index = 1;             this.menuItem3.Text = "粘贴(&P)";             this.menuItem3.Click += new System.EventHandler(this.menuItem3_Click);             //             // menuItem4             //             this.menuItem4.Index = 2;             this.menuItem4.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {                                                                                       this.menuItem5,                                                                                       this.menuItem6});             this.menuItem4.Text = "帮助(&H)";             //             // menuItem5             //             this.menuItem5.Index = 0;             this.menuItem5.Text = "帮助主题(&H)";             this.menuItem5.Click += new System.EventHandler(this.menuItem5_Click);             //             // menuItem6             //             this.menuItem6.Index = 1;             this.menuItem6.Text = "关于(&A)";             this.menuItem6.Click += new System.EventHandler(this.menuItem6_Click);             //             // menuItem8             //             this.menuItem8.Index = 0;             this.menuItem8.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {                                                                                       this.menuItem9,                                                                                       this.menuItem10});             this.menuItem8.Text = "文件(&F)";             //             // menuItem9             //             this.menuItem9.Index = 0;             this.menuItem9.Text = "打开windows计算器(&O)";             this.menuItem9.Click += new System.EventHandler(this.menuItem9_Click);             //             // menuItem10             //             this.menuItem10.Index = 1;             this.menuItem10.Text = "退出(&Q)";             this.menuItem10.Click += new System.EventHandler(this.menuItem10_Click);             //             // Form1             //             this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);             this.ClientSize = new System.Drawing.Size(278, 239);             this.Controls.Add(this.groupBox1);             this.Controls.Add(this.txtShow);             this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.Fixed3D;             this.Icon = ((System.Drawing.Icon)(resources.GetObject("$this.Icon")));             this.MaximizeBox = false;             this.Menu = this.mainMenu1;             this.Name = "Form1";             this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;             this.Text = "计算器";             this.groupBox1.ResumeLayout(false);             this.ResumeLayout(false);

        }         #endregion

        #region 各变量和常数的声明         public const int NULL = 0;      // 定义操作码         public const int ADD = 1;     //表示加         public const int SUB = 2;     //减         public const int MUL = 3;     //乘         public const int DIV = 4;    //除         public const int SQR = 5;    //求平方         public const int SQRT = 6;   //求平方根         public const int NODOT  = 0;     // 定义是否点击了小数点,0 为没点         public const int HASDOT = 1;         private double res = 0;         // 记录结果数         private double tmp = 0;         // 当前输入的操作数         private int opt = NULL;         // 记录操作码         private int dot = NODOT;    // 记录是否点击了小数点,0为没有点         private int num = 0;        // 记录输入操作数的个数         private int dotnum = 0;        // 记录小数点部分的个数                string strOper;            //获取操作符         #endregion         /// <summary>         /// 应用程序的主入口点。         /// </summary>         [STAThread]         static void Main()         {             Application.Run(new Form1());         }

        /// <summary>         #region 获取操作数事件         //获取操作数事件         private void btn_0_Click(object sender, System.EventArgs e)         {             System.Windows.Forms.Button btnTmp;             double i;

            btnTmp = sender as System.Windows.Forms.Button;                        if (btnTmp != null)             {                 if (dot == NODOT)                 {                     // 没有点击小数点                     i = double.Parse(btnTmp.Tag.ToString()); //取用户自定义的控件关联数,并转换成double型                     tmp = tmp * 10 + i;                     txtShow.Text = tmp.ToString();   //将其放入文本显示屏啊                 }                 else   // 点击了小数点                 {                                        dotnum++;    //记录小数点部分的个数                                                        // 生成小数部分的新的数值                     i = double.Parse(btnTmp.Tag.ToString()) / System.Math.Pow(10,dotnum);                     tmp = tmp + i;  //将小数点后的值加到当前操做数                     txtShow.Text = tmp.ToString();                 }             }         }         #endregion

        #region 等于事件和等于运算方法         //等于事件         private void btn_equ_Click(object sender, System.EventArgs e)         {             calc();         }

        //等于运算方法         private void calc()         {             // 生成结果             if (num == 0 )    //是否有操作数,没有就返回0             {                 res = 0;                 tmp = 0;                 txtShow.Text = res.ToString();                 return;             }

            switch (opt)  //找到对应的运算符进行计算             {                     // 加法                 case ADD:                     res = res + tmp;                                        break;                     // 减法                 case SUB:                     res = res - tmp;                                        break;                     // 乘法                 case MUL:                     res = res * tmp;                                        break;                     // 除法                 case DIV:                     res = res / tmp;                                        break;                     // 平方                 case SQR:                     res = tmp * tmp;                                        break;                     // 平方根                 case SQRT:                     res = System.Math.Sqrt(tmp);                                        break;                 default:                     return;             }             txtShow.Text = res.ToString();   //结果输出到文本显示屏             opt = NULL;  //运算符清空             tmp=0;                dot = NODOT;                     //res = 0;                     //num = 0;         }         #endregion

        #region 获取操作符运事件         //获取操作符运事件         private void btn_Oper(object obj,EventArgs ea)         {             Button tmp1=(Button)obj;             strOper=tmp1.Text;             switch (strOper)             {                 case "/":       //除法运算                     if(opt!=NULL&&opt!=DIV)                     {                         calc();                     }                     opt = DIV;                     if (num != 0)  //判断操作数的个数,如果两个就做二元运算                     {                         if (tmp != 0)                             res = res / tmp;                     }                     else                         res = tmp;                     num++;                                          tmp = 0;                     txtShow.Text = res.ToString();                     dot = NODOT;                     break;                 case "*":                     // 乘法运算                     if(opt!=NULL&&opt!=MUL)                     {                         calc();                     }

                    opt = MUL;                     if (num!= 0 )     //判断操作数的个数,如果两个就做二元运算                        {                             if(tmp!=0)                          res = res * tmp;                     }                     else                         res = tmp;                     num++;                                                          tmp = 0;                     txtShow.Text = res.ToString();                     dot = NODOT;                     break;                 case "+":            //加法运算                     if(opt!=NULL&&opt!=ADD)                     {                         calc();                     }                     opt = ADD;                     if (num != 0)    //判断操作数的个数,如果两个就做二元运算                         res = res + tmp;                     else                         res = tmp;                     num++;                                        tmp = 0;                     txtShow.Text = res.ToString();                     dot = NODOT;                     break;                 case "-":        //减法运算                     if(opt!=NULL&&opt!=SUB)                     {                         calc();                     }                     /*if(opt==ADD)                     {                         res=res+tmp;                         tmp=0;                     }*/                     opt = SUB;                     if (num != 0)    //判断操作数的个数,如果两个就做二元运算                         res = res - tmp;                     else                         res = tmp;                     num++;                                         tmp = 0;                     txtShow.Text = res.ToString();                     dot = NODOT;                     break;                 case "sqrt":     //平方根运算                     if(opt!=NULL)                     {                         calc();                     }

                    //opt=SQRT;                     if (tmp > 0)  //要求操作数大于0                     {                         res = Math.Sqrt(tmp);                         //res=tmp;                     }                     else if(res>0)                         res= Math.Sqrt(res);                         txtShow.Text =res.ToString();                     num++;                        tmp=0;                     dot = NODOT;                     break;                 case "sqr":                     // 平方运算                     if(opt!=NULL)                     {                         calc();                     }                     //opt=SQR;                     if (tmp != 0)                     {                         res = tmp * tmp;                         //res=tmp;                     }                     else                         res=res*res;                     txtShow.Text = res.ToString();                     num++;                        tmp=0;                     dot = NODOT;                     break;                 case "1/x":  //倒数运算                     if(opt!=NULL)                     {                         calc();                     }                     if (tmp != 0)                     {                         res = 1 / tmp;                         //res=tmp;                     }                     else                                        res=1/res;                     txtShow.Text = res.ToString();                     tmp=0;                     dot = NODOT;                     break;                 case ".":                             // 点击了小数点                     if(dot==HASDOT)                         return;                     else                     {                         dot = HASDOT;                         dotnum = 0;                     }                                        break;                 case "+/-":                                 // 点击了符号运算                     if(tmp!=0)                     {                         tmp = -tmp;                         txtShow.Text = tmp.ToString();                     }                     else                     {                         res=-res;                         //res=tmp;                         txtShow.Text = res.ToString();                        }                     dot = NODOT;                     break;                    case "CE":     //清除运算                     res = 0;         // 记录结果数                     tmp = 0;         // 当前输入的操作数                     opt = NULL;         // 记录操作码                     dot = NODOT;    // 记录是否点击了小数点                     num = 0;        // 记录输入操作数的个数                     dotnum = 0;        // 记录小数点部分的个数                     txtShow.Text="";                                        break;                 case "C":         //清除运算                     res = 0;         // 记录结果数                     tmp = 0;         // 当前输入的操作数                     opt = NULL;         // 记录操作码                     dot = NODOT;    // 记录是否点击了小数点                     num = 0;        // 记录输入操作数的个数                     dotnum = 0;        // 记录小数点部分的个数                     txtShow.Text="";                     break;

            }         }

        #endregion

        #region     主菜单事件         //打开关于主题---调用windows xp中计算器的帮助         private void menuItem5_Click(object sender, System.EventArgs e)         {             Help.ShowHelp(this,"C://WINDOWS//Help//calc.chm");                }

        //打开于我们         private void menuItem6_Click(object sender, System.EventArgs e)         {             Form2 fm=new Form2();             fm.Show();         }

        //复制         private void menuItem2_Click(object sender, System.EventArgs e)         {             if(txtShow.SelectionLength>0)             {                 txtShow.Copy();             }         }         //        //粘贴         private void menuItem3_Click(object sender, System.EventArgs e)         {             txtShow.Paste();         }           //调用windows xp中的计算器         private void menuItem9_Click(object sender, System.EventArgs e)         {              Help.ShowHelp(this,"C://WINDOWS//system32//calc.exe");         }         //退出         private void menuItem10_Click(object sender, System.EventArgs e)         {             Application.Exit();         }

        #endregion

    } }

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