选择自 cspro 的 blog
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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