第133页的gtk+编程例子——计算器应用改写网上的例子

第133页的gtk+编程例子——计算器应用改写网上的例子
来源：《GTK的计算器》
https://blog.csdn.net/zhouzhouzf/article/details/17097999

重点在于它的设计思路是比较巧妙的，能够处理多种情况，比较容易理解，也感到人类的思想是非常神奇的，例子程序是在gtk2.0编译的，已经修改许多地方才能在gtk3.0编译通过，在openSUSE-Leap-15.5-DVD-x86_64的gnome41.8桌面环境下编译的，其中pkg-config --cflags gtk±3.0两边有反引号括起来的，pkg-config --libs gtk±3.0也是一样两边有反引号括起来的，因为报错undefined reference to symbol ‘exp@@GLIBC_2.29’，所以一定要加上-lm选项，> mistake.text 2>&1 ; gedit mistake.text表示将编译过程的错误信息保存到文本文件mistake.text，编译完成后马上打开查看

ruhong@localhost:~/gtk/calculator> gcc -g -Wall -lm pkg-config --cflags gtk+-3.0 -o zhouzhouzf2 zhouzhouzf2.c pkg-config --libs gtk+-3.0 > mistake.text 2>&1 ; gedit mistake.text
ruhong@localhost:~/gtk/calculator> ./zhouzhouzf2

#include 
#include 
#include 
#include 
#include 
 
double a , b;
 
int hasdot;        /*是否有小数点*/
int method;        /*区别不同的运算*/
char out[20] = "0";
GtkWidget *window;
GtkWidget *vbox;
GtkWidget *entry1;
GtkWidget *label1;
GtkWidget *grid1;
GtkWidget *button1;
GtkWidget *button2;
GtkWidget *button3;
GtkWidget *button4;
GtkWidget *button5;
GtkWidget *button6;
GtkWidget *button7;
GtkWidget *button8;
GtkWidget *button9;
GtkWidget *button10;
GtkWidget *button11;
GtkWidget *button12;
GtkWidget *button13;
GtkWidget *button14;
GtkWidget *button15;
GtkWidget *button16;
GtkWidget *button17;
GtkWidget *button18;
GtkWidget *button19;
GtkWidget *button20;
GtkWidget *button21;
GtkWidget *button22;
GtkWidget *button23;
GtkWidget *button24;
GtkWidget *button25;
GtkWidget *button26;
GtkWidget *button27;
GtkWidget *button28;
GtkWidget *button29;
GtkWidget *button30;
GtkWidget *button31;
GtkWidget *button32;
GtkWidget *button33;
GtkWidget *button34;
GtkWidget *button35;
GtkWidget *button36;
 
/**************************************************************************************************************/
/*双目运算函数*/
void Binary_Operator()
{
    char num[20];
 strcpy(num , gtk_entry_get_text(GTK_ENTRY(entry1)));
 if( a == 0 )                                        /*如果没有第一个数，则存储为第一个数*/
 {
     gtk_entry_set_text(GTK_ENTRY(entry1) , "");
        a = atof(num);                                  /*字符串转换成浮点型*/
 }
 else
 {
        b = atof(num);
 }
 hasdot = 0;                                         /*表示没有小数点*/
}
 
/*单目运算的结果输出*/
void Right_output()
{
    char num[20];
 gcvt(a , 32 , num);                                /*运算结果浮点型转换成字符串*/
 gtk_entry_set_text(GTK_ENTRY(entry1) , num);       /*直接显示结果*/
 a = 0;
 b = 0;
 method = 0;
}
 
/*递归函数求阶乘*/
float fun(int c)
{
    float d;
 if( c == 0 || c == 1 )
  d = 1;
 else
  d = fun(c - 1)*c;
 
 return d;
}
 
/*双目运算的结果输出*/
void output()
{
    char num[20] = "0";
 strcpy(num , gtk_entry_get_text(GTK_ENTRY(entry1)));  /*取得文本框的内容*/
 b = atof(num);                                         /*字符型转换成浮点型*/
 switch( method )
 {
        case 0:
   a = a + b ; Right_output() ; break ;           /*+*/
  case 1:
   a = a - b ; Right_output() ; break ;           /*-*/
  case 2:
   a = a * b ; Right_output() ; break ;           /***/
  case 3:
   if( b == 0 )
   {
                a = 0;
    b = 0;
    method = 0;
    gtk_entry_set_text(GTK_ENTRY(entry1) , "Remainder can't for 0!");
   }
   else
   {
                a = a / b ; Right_output() ;               /*/*/
   } break;
  case 4:
   a = pow(a , b) ; Right_output() ; break;       /*pow 算a的b次幂X^Y*/
  case 5:
   a = ((int )a) & ((int )b) ; Right_output() ; break;  /*& and*/
  case 6:
   a = ((int )a) | ((int )b) ; Right_output() ; break;  /*| or*/
  case 7:
   a = ((int )a) ^ ((int )b) ; Right_output() ; break;  /*^ 异或 xor*/
  case 8:
   if( b == 0 )
   {
                a = 0;
    b = 0;
    method = 0;
    gtk_entry_set_text(GTK_ENTRY(entry1) , "Remainder can't for 0!");
   }
   else
   {
                a = ((int )a) % ((int )b); Right_output();       /*%取模(取余) mod*/
   } break;
  case 9:
   a = sin( b ); Right_output() ; break;                /*sin*/
  case 10:
   a = cos( b ); Right_output() ; break;                /*cos*/
  case 11:
   a = tan( b ); Right_output() ; break;                /*tan*/
  case 12:
   a = exp( b ); Right_output() ; break;                /*exp*/
  case 13:
   a = b * b * b; Right_output() ; break;               /*X^3*/
  case 14:
   a = b * b; Right_output() ; break;                   /*X^2*/
  case 15:
   if( b <= 0 )
   {
                a = 0 ;
    b = 0 ;
    method = 0 ;
    gtk_entry_set_text(GTK_ENTRY(entry1) , "Logarithm must be positive !");
   }
   else
   {
                a = log( b ); Right_output();                    /*log*/
   } break;
  case 16:
   if( b <= 0 )
   {
                a = 0;
    b = 0;
    method = 0;
    gtk_entry_set_text(GTK_ENTRY(entry1) , "Logarithm must be positive !");
   }
   else
      {
                a = log10( b ); Right_output();                  /*ln*/
   } break;
  case 17:
   if( b < 0 )
   {
                a = 0;
    b = 0;
    method = 0;
    gtk_entry_set_text(GTK_ENTRY(entry1) , "Function input is invalid,must be>=0 !");
   }
   else
   {
                a = fun((int)(b)); Right_output();              /*n!*/
   } break;
  case 18:
   if( b == 0 )
   {
                a = 0 ;
    b = 0 ;
    method = 0;
    gtk_entry_set_text(GTK_ENTRY(entry1) , "Divisor can't for 0 !");
   }
   else
   {
                a = 1 / b; Right_output();                      /*1/X*/
   } break;
  case 19:
   a = ~((int )b); Right_output(); break;              /*not 取反*/
  case 20:
   a = floor(b) ; Right_output(); break;       /*int取整floor返回小于或等于指定表达式的最大整数*/
  default: break;
 }
}
 
/**************************************************************************************************************/
/*加法运算*/
void Add(GtkWidget *widget , gpointer data)
{
    method = 0;
 Binary_Operator();
}
 
/*减法运算*/
void Sub(GtkWidget *widget , gpointer data)
{
    method = 1;
 Binary_Operator();
}
 
/*乘法运算*/
void Mul(GtkWidget *widget , gpointer data)
{
    method = 2;
 Binary_Operator();
}
 
/*除法运算*/
void Division(GtkWidget *widget , gpointer data)
{
    method = 3;
 Binary_Operator();
}
 
/*exp 幂运算*/
void Mathpowxy(GtkWidget *widget , gpointer data)
{
    method = 4;
 Binary_Operator();
}
 
/*and 逻辑与*/
void And(GtkWidget *widget , gpointer data)
{
    method = 5;
 Binary_Operator();
}
 
/*or 逻辑或*/
void Or(GtkWidget *widget , gpointer data)
{
    method = 6;
 Binary_Operator();
}
 
/*xor逻辑异或 */
void Xor(GtkWidget *widget , gpointer data)
{
    method = 7;
 Binary_Operator();
}
 
/*Mod 模运算(取余)*/
void Mod(GtkWidget *widget , gpointer data)
{
    method = 8;
 Binary_Operator();
}
/**************************************************************************************************************/
 
/*sin*/
void Sin(GtkWidget *widget , gpointer data)
{
    method = 9;
 output();
}
 
/*cos*/
void Cos(GtkWidget *widget , gpointer data)
{
    method = 10;
 output();
}
 
/*tan*/
void Tan(GtkWidget *widget , gpointer data)
{
    method = 11;
 output();
}
 
/*exp*/
void Exp(GtkWidget *widget , gpointer data)
{
    method = 12;
 output();
}
 
/*X^3 立方*/
void Cube(GtkWidget *widget , gpointer data)
{
    method = 13;
 output();
}
 
/*X^2 平方*/
void Square(GtkWidget *widget , gpointer data)
{
    method = 14;
 output();
}
 
/*log_e*/
void Log_e(GtkWidget *widget , gpointer data)
{
    method = 15;
 output();
}
 
/*Log_10*/
void Log_10(GtkWidget *widget , gpointer data)
{
    method = 16;
 output();
}
 
/*N!*/
void Factorial(GtkWidget *widget , gpointer data)
{
    method = 17;
 output();
}
 
/*1/X*/
void Inverse(GtkWidget *widget , gpointer data)
{
    method = 18;
 output();
}
 
/*not逻辑非*/
void Not(GtkWidget *widget , gpointer data)
{
    method = 19;
 output();
}
 
/*int 取整*/
void Floor(GtkWidget *widget , gpointer data)
{
    method = 20;
 output();
}
/**************************************************************************************************************/
 
/*.小数点*/
void dot(GtkWidget *widget , gpointer data)
{
    if( hasdot == 0 )
    {
		  const gchar *entry_text = gtk_entry_get_text(GTK_ENTRY(entry1));		/*从显示器提取现有的文本*/
        gint pos = strlen(entry_text);				/*计算现有的文本字符个数*/
        gtk_editable_insert_text(GTK_EDITABLE(entry1) , gtk_button_get_label(GTK_BUTTON(widget)), -1 , &pos);
        	     /*大概意思是叠加后面键入的内容gtk_button_get_label(GTK_BUTTON(widget)，与之前键入的内容合在一起，-1表示不限制加入内容的长度，&pos是指在现有的文本的第pos个字符的后面加入 */
  hasdot = 1;                            /*表示有一个小数点*/
 }
}
 
/*正负选择+/-*/
void Sign()
{
    char num[20];
 float c;
 strcpy(num , gtk_entry_get_text(GTK_ENTRY(entry1)));    /*取得文本框的内容*/
 c = atof(num);                                           /*字符型转换成浮点型*/
 c = -c;
 gcvt(c , 32 , num);                                      /*浮点型转换成字符型*/
 gtk_entry_set_text(GTK_ENTRY(entry1) , num);             /*显示结果*/
}
 
/*清除函数CR*/
void clear(GtkWidget *widget , gpointer data)
{
    gtk_entry_set_text(GTK_ENTRY(entry1) , "");
 hasdot = 0;
 a = 0;
 b = 0;
 method = 0;
}
 
/*输入函数*/
void input(GtkWidget *widget , gpointer data)
{
    const gchar *entry_text = gtk_entry_get_text(GTK_ENTRY(entry1));
    gint pos = strlen(entry_text);
    gtk_editable_insert_text(GTK_EDITABLE(entry1) , gtk_button_get_label(GTK_BUTTON(widget)), -1 , &pos);
}
 
/*pi*/
void input_pi(GtkWidget *widget , gpointer data)
{
    gtk_entry_set_text(GTK_ENTRY(entry1) , "3.1415926535897932384626433832795");
}
 
/**************************************************************************************************************/
/*界面构建函数*/
void interface()
{
    char title[]="My Calculator";
 window = gtk_window_new(GTK_WINDOW_TOPLEVEL);       /*创建一个窗口*/
 gtk_window_set_title(GTK_WINDOW(window) , title); /*为窗口添加标题*/
 
 vbox = gtk_box_new(GTK_ORIENTATION_VERTICAL, 0);                     /*创建垂直框*/
 gtk_container_add(GTK_CONTAINER(window) , vbox);    /*把垂直框添加到窗口中*/
 gtk_widget_show(vbox);                              /*显示垂直框*/
 
 entry1 = gtk_entry_new();                           /*创建一个文本框*/
 gtk_box_pack_start(GTK_BOX(vbox) , entry1 , TRUE , FALSE , 0);/*把文本框添加到垂直框中*/
 gtk_widget_show(entry1);                            /*显示文本框*/
 
 label1 = gtk_label_new("        10  calculate        ");                           /*创建一个标签*/
 gtk_box_pack_start(GTK_BOX(vbox) , label1 , TRUE , FALSE , 0);/*把标签添加到垂直框中*/
 gtk_widget_show(label1);                            /*显示垂直框*/
 
 grid1 = gtk_grid_new();              /*创建一个表格*/
 gtk_box_pack_start(GTK_BOX(vbox) , grid1 , TRUE , FALSE , 0);/*表格添加到垂直框中*/
 gtk_widget_show(grid1);                            /*显示表格*/
    /**************************************************************************************************************/
 //button1 = gtk_button_new_with_mnemonic("Pi");
 button1 = gtk_button_new_with_label("Pi");          /*创建按钮*/
 gtk_grid_attach(GTK_GRID(grid1) , button1 , 0 , 0, 1 , 1 );
 gtk_widget_set_size_request(button1 , 70 , 35);     /*设置按钮大小*/
 gtk_widget_show(button1);                           /*显示按钮*/
 
    //button2 = gtk_button_new_with_mnemonic("Sin");
 button2 = gtk_button_new_with_label("Sin");          /*创建按钮*/
 gtk_grid_attach(GTK_GRID(grid1) , button2 , 0 , 1 , 1 , 1 );
 gtk_widget_set_size_request(button2 , 70 , 35);     /*设置按钮大小*/
 gtk_widget_show(button2);                           /*显示按钮*/
 
 //button3 = gtk_button_new_with_mnemonic("Cos");
 button3 = gtk_button_new_with_label("Cos");          /*创建按钮*/
 gtk_grid_attach(GTK_GRID(grid1) , button3 , 0 , 2 , 1 , 1 );
 gtk_widget_set_size_request(button3 , 70 , 35);     /*设置按钮大小*/
 gtk_widget_show(button3);                           /*显示按钮*/
 
 //button4 = gtk_button_new_with_mnemonic("Tan");
 button4 = gtk_button_new_with_label("Tan");          /*创建按钮*/
 gtk_grid_attach(GTK_GRID(grid1) , button4 , 0 , 3 , 1 , 1 );
 gtk_widget_set_size_request(button4 , 70 , 35);     /*设置按钮大小*/
 gtk_widget_show(button4);                           /*显示按钮*/
    /**************************************************************************************************************/
 //button5 = gtk_button_new_with_mnemonic("Exp");
 button5 = gtk_button_new_with_label("Exp");          /*创建按钮*/
 gtk_grid_attach(GTK_GRID(grid1) , button5 , 1 , 0 , 1 , 1 );
 gtk_widget_set_size_request(button5 , 70 , 35);     /*设置按钮大小*/
 gtk_widget_show(button5);                           /*显示按钮*/
 
 //button6 = gtk_button_new_with_mnemonic("X^Y");
 button6 = gtk_button_new_with_label("X^Y");          /*创建按钮*/
 gtk_grid_attach(GTK_GRID(grid1) , button6 , 1 , 1 , 1 , 1 );
 gtk_widget_set_size_request(button6 , 70 , 35);     /*设置按钮大小*/
 gtk_widget_show(button6);                           /*显示按钮*/
 
 //button7 = gtk_button_new_with_mnemonic("X^3");
 button7 = gtk_button_new_with_label("X^3");          /*创建按钮*/
 gtk_grid_attach(GTK_GRID(grid1) , button7 , 1 , 2 , 1 , 1 );
 gtk_widget_set_size_request(button7 , 70 , 35);     /*设置按钮大小*/
 gtk_widget_show(button7);                           /*显示按钮*/
 
 //button8 = gtk_button_new_with_mnemonic("X^2");
 button8 = gtk_button_new_with_label("X^2");          /*创建按钮*/
 gtk_grid_attach(GTK_GRID(grid1) , button8 , 1 , 3 , 1 , 1 );
 gtk_widget_set_size_request(button8 , 70 , 35);     /*设置按钮大小*/
 gtk_widget_show(button8);                           /*显示按钮*/
    /**************************************************************************************************************/
 //button9 = gtk_button_new_with_mnemonic("Ln");
 button9 = gtk_button_new_with_label("Ln");          /*创建按钮*/
 gtk_grid_attach(GTK_GRID(grid1) , button9 , 2 , 0 , 1 , 1 );
 gtk_widget_set_size_request(button9 , 70 , 35);     /*设置按钮大小*/
 gtk_widget_show(button9);                           /*显示按钮*/
 
 //button10 = gtk_button_new_with_mnemonic("Log");
 button10 = gtk_button_new_with_label("Log");          /*创建按钮*/
 gtk_grid_attach(GTK_GRID(grid1) , button10 , 2 , 1 , 1 , 1 );
 gtk_widget_set_size_request(button10 , 70 , 35);     /*设置按钮大小*/
 gtk_widget_show(button10);                           /*显示按钮*/
 
 //button11 = gtk_button_new_with_mnemonic("N!");
 button11 = gtk_button_new_with_label("N!");          /*创建按钮*/
 gtk_grid_attach(GTK_GRID(grid1) , button11 , 2 , 2 , 1 , 1 );
 gtk_widget_set_size_request(button11 , 70 , 35);     /*设置按钮大小*/
 gtk_widget_show(button11);                           /*显示按钮*/
 
 //button12 = gtk_button_new_with_mnemonic("1/X");
 button12 = gtk_button_new_with_label("1/X");          /*创建按钮*/
 gtk_grid_attach(GTK_GRID(grid1) , button12 , 2 , 3 , 1 , 1 );
 gtk_widget_set_size_request(button12 , 70 , 35);     /*设置按钮大小*/
 gtk_widget_show(button12);                           /*显示按钮*/
    /**************************************************************************************************************/
 //button13 = gtk_button_new_with_mnemonic("7");
 button13 = gtk_button_new_with_label("7");          /*创建按钮*/
 gtk_grid_attach(GTK_GRID(grid1) , button13 , 3 , 0 , 1 , 1 );
 gtk_widget_set_size_request(button13 , 70 , 35);     /*设置按钮大小*/
 gtk_widget_show(button13);                           /*显示按钮*/
 
 //button14 = gtk_button_new_with_mnemonic("4");
 button14 = gtk_button_new_with_label("4");          /*创建按钮*/
 gtk_grid_attach(GTK_GRID(grid1) , button14 , 3 , 1 , 1 , 1 );
 gtk_widget_set_size_request(button14 , 70 , 35);     /*设置按钮大小*/
 gtk_widget_show(button14);                           /*显示按钮*/
 
 //button15 = gtk_button_new_with_mnemonic("1");
 button15 = gtk_button_new_with_label("1");          /*创建按钮*/
 gtk_grid_attach(GTK_GRID(grid1) , button15 , 3 , 2 , 1 , 1 );
 gtk_widget_set_size_request(button15 , 70 , 35);     /*设置按钮大小*/
 gtk_widget_show(button15);                           /*显示按钮*/
 
 //button16 = gtk_button_new_with_mnemonic("0");
 button16 = gtk_button_new_with_label("0");          /*创建按钮*/
 gtk_grid_attach(GTK_GRID(grid1) , button16 , 3 , 3 , 1 , 1 );
 gtk_widget_set_size_request(button16 , 70 , 35);     /*设置按钮大小*/
 gtk_widget_show(button16);                           /*显示按钮*/
    /**************************************************************************************************************/
 //button17 = gtk_button_new_with_mnemonic("8");
 button17 = gtk_button_new_with_label("8");          /*创建按钮*/
 gtk_grid_attach(GTK_GRID(grid1) , button17 , 4 , 0 , 1 , 1 );
 gtk_widget_set_size_request(button17 , 70 , 35);     /*设置按钮大小*/
 gtk_widget_show(button17);                           /*显示按钮*/
 
 //button18 = gtk_button_new_with_mnemonic("5");
 button18 = gtk_button_new_with_label("5");          /*创建按钮*/
 gtk_grid_attach(GTK_GRID(grid1) , button18 , 4 , 1 , 1 , 1 );
 gtk_widget_set_size_request(button18 , 70 , 35);     /*设置按钮大小*/
 gtk_widget_show(button18);                           /*显示按钮*/
 
 //button19 = gtk_button_new_with_mnemonic("2");
 button19 = gtk_button_new_with_label("2");          /*创建按钮*/
 gtk_grid_attach(GTK_GRID(grid1) , button19 , 4 , 2 , 1 , 1 );
 gtk_widget_set_size_request(button19 , 70 , 35);     /*设置按钮大小*/
 gtk_widget_show(button19);                           /*显示按钮*/
 
 //button20 = gtk_button_new_with_mnemonic("+/-");
 button20 = gtk_button_new_with_label("+/-");          /*创建按钮*/
 gtk_grid_attach(GTK_GRID(grid1) , button20 , 4 , 3 , 1 , 1 );
 gtk_widget_set_size_request(button20 , 70 , 35);     /*设置按钮大小*/
 gtk_widget_show(button20);                           /*显示按钮*/
    /**************************************************************************************************************/
 //button21 = gtk_button_new_with_mnemonic("9");
 button21 = gtk_button_new_with_label("9");          /*创建按钮*/
 gtk_grid_attach(GTK_GRID(grid1) , button21 , 5 , 0 , 1 , 1 );
 gtk_widget_set_size_request(button21 , 70 , 35);     /*设置按钮大小*/
 gtk_widget_show(button21);                           /*显示按钮*/
 
 //button22 = gtk_button_new_with_mnemonic("6");
 button22 = gtk_button_new_with_label("6");          /*创建按钮*/
 gtk_grid_attach(GTK_GRID(grid1) , button22 , 5 , 1 , 1 , 1 );
 gtk_widget_set_size_request(button22 , 70 , 35);     /*设置按钮大小*/
 gtk_widget_show(button22);                           /*显示按钮*/
 
 //button23 = gtk_button_new_with_mnemonic("3");
 button23 = gtk_button_new_with_label("3");          /*创建按钮*/
 gtk_grid_attach(GTK_GRID(grid1) , button23 , 5 , 2 , 1 , 1 );
 gtk_widget_set_size_request(button23 , 70 , 35);     /*设置按钮大小*/
 gtk_widget_show(button23);                           /*显示按钮*/
 
 //button24 = gtk_button_new_with_mnemonic(".");
 button24 = gtk_button_new_with_label(".");          /*创建按钮*/
 gtk_grid_attach(GTK_GRID(grid1) , button24 , 5 , 3 , 1 , 1 );
 gtk_widget_set_size_request(button24 , 70 , 35);     /*设置按钮大小*/
 gtk_widget_show(button24);                           /*显示按钮*/
    /**************************************************************************************************************/
 //button25 = gtk_button_new_with_mnemonic("/");
 button25 = gtk_button_new_with_label("/");          /*创建按钮*/
 gtk_grid_attach(GTK_GRID(grid1) , button25 , 6 , 0 , 1 , 1 );
 gtk_widget_set_size_request(button25 , 70 , 35);     /*设置按钮大小*/
 gtk_widget_show(button25);                           /*显示按钮*/
 
 //button26 = gtk_button_new_with_mnemonic("*");
 button26 = gtk_button_new_with_label("*");          /*创建按钮*/
 gtk_grid_attach(GTK_GRID(grid1) , button26 , 6 , 1 , 1 , 1 );
 gtk_widget_set_size_request(button26 , 70 , 35);     /*设置按钮大小*/
 gtk_widget_show(button26);                           /*显示按钮*/
 
 //button27 = gtk_button_new_with_mnemonic("-");
 button27 = gtk_button_new_with_label("-");          /*创建按钮*/
 gtk_grid_attach(GTK_GRID(grid1) , button27 , 6 , 2 , 1 , 1 );
 gtk_widget_set_size_request(button27 , 70 , 35);     /*设置按钮大小*/
 gtk_widget_show(button27);                           /*显示按钮*/
 
 //button28 = gtk_button_new_with_mnemonic("+");
 button28 = gtk_button_new_with_label("+");          /*创建按钮*/
 gtk_grid_attach(GTK_GRID(grid1) , button28 , 6 , 3 , 1 , 1 );
 gtk_widget_set_size_request(button28 , 70 , 35);     /*设置按钮大小*/
 gtk_widget_show(button28);                           /*显示按钮*/
    /**************************************************************************************************************/
 //button29 = gtk_button_new_with_mnemonic("=");
 button29 = gtk_button_new_with_label("=");          /*创建按钮*/
 gtk_grid_attach(GTK_GRID(grid1) , button29 , 7 , 0 , 1 , 1 );
 gtk_widget_set_size_request(button29 , 70 , 35);     /*设置按钮大小*/
 gtk_widget_show(button29);                           /*显示按钮*/
 
 //button30 = gtk_button_new_with_mnemonic("And");
 button30 = gtk_button_new_with_label("And");          /*创建按钮*/
 gtk_grid_attach(GTK_GRID(grid1) , button30 , 7 , 1 , 1 , 1 );
 gtk_widget_set_size_request(button30 , 70 , 35);     /*设置按钮大小*/
 gtk_widget_show(button30);                           /*显示按钮*/
 
 //button31 = gtk_button_new_with_mnemonic("Or");
 button31 = gtk_button_new_with_label("Or");          /*创建按钮*/
 gtk_grid_attach(GTK_GRID(grid1) , button31 , 7 , 2 , 1 , 1 );
 gtk_widget_set_size_request(button31 , 70 , 35);     /*设置按钮大小*/
 gtk_widget_show(button31);                           /*显示按钮*/
 
 //button32 = gtk_button_new_with_mnemonic("Mod");
 button32 = gtk_button_new_with_label("Mod");          /*创建按钮*/
 gtk_grid_attach(GTK_GRID(grid1) , button32 , 7 , 3 , 1 , 1 );
 gtk_widget_set_size_request(button32 , 70 , 35);     /*设置按钮大小*/
 gtk_widget_show(button32);                           /*显示按钮*/
    /**************************************************************************************************************/
 //button33 = gtk_button_new_with_mnemonic("CR");
 button33 = gtk_button_new_with_label("CR");          /*创建按钮*/
 gtk_grid_attach(GTK_GRID(grid1) , button33 , 8 , 0 , 1 , 1 );
 gtk_widget_set_size_request(button33 , 70 , 35);     /*设置按钮大小*/
 gtk_widget_show(button33);                           /*显示按钮*/
 
 //button34 = gtk_button_new_with_mnemonic("Not");
 button34 = gtk_button_new_with_label("Not");          /*创建按钮*/
 gtk_grid_attach(GTK_GRID(grid1) , button34 , 8 , 1 , 1 , 1 );
 gtk_widget_set_size_request(button34 , 70 , 35);     /*设置按钮大小*/
 gtk_widget_show(button34);                           /*显示按钮*/
 
 //button35 = gtk_button_new_with_mnemonic("Xor");
 button35 = gtk_button_new_with_label("Xor");          /*创建按钮*/
 gtk_grid_attach(GTK_GRID(grid1) , button35 , 8 , 2 , 1 , 1 );
 gtk_widget_set_size_request(button35 , 70 , 35);     /*设置按钮大小*/
 gtk_widget_show(button35);                           /*显示按钮*/
 
 //button36 = gtk_button_new_with_mnemonic("Int");
 button36 = gtk_button_new_with_label("Int");          /*创建按钮*/
 gtk_grid_attach(GTK_GRID(grid1) , button36 , 8 , 3 , 1 , 1 );
 gtk_widget_set_size_request(button36 , 70 , 35);     /*设置按钮大小*/
 gtk_widget_show(button36);                           /*显示按钮*/
 
}
 
/**************************************************************************************************************/
/*添加事件函数*/
void addsignal()
{
    /*下面的按钮实现数字的输入*/
 g_signal_connect(G_OBJECT(button1) , "clicked" , G_CALLBACK(input_pi) , NULL);
 g_signal_connect(G_OBJECT(button13) , "clicked" , G_CALLBACK(input) , NULL);
 g_signal_connect(G_OBJECT(button14) , "clicked" , G_CALLBACK(input) , NULL);
 g_signal_connect(G_OBJECT(button15) , "clicked" , G_CALLBACK(input) , NULL);
 g_signal_connect(G_OBJECT(button16) , "clicked" , G_CALLBACK(input) , NULL);
 g_signal_connect(G_OBJECT(button17) , "clicked" , G_CALLBACK(input) , NULL);
 g_signal_connect(G_OBJECT(button18) , "clicked" , G_CALLBACK(input) , NULL);
 g_signal_connect(G_OBJECT(button19) , "clicked" , G_CALLBACK(input) , NULL);
 g_signal_connect(G_OBJECT(button21) , "clicked" , G_CALLBACK(input) , NULL);
 g_signal_connect(G_OBJECT(button22) , "clicked" , G_CALLBACK(input) , NULL);
 g_signal_connect(G_OBJECT(button23) , "clicked" , G_CALLBACK(input) , NULL);
 
 /*实现小数点的输入*/
 g_signal_connect(G_OBJECT(button24) , "clicked" , G_CALLBACK(dot) , NULL);
 /*实现正负号的输入*/
 g_signal_connect(G_OBJECT(button20) , "clicked" , G_CALLBACK(Sign) , NULL);
 /*实现各种运算的输入*/
 g_signal_connect(G_OBJECT(button2) , "clicked" , G_CALLBACK(Sin), NULL);
 g_signal_connect(G_OBJECT(button3) , "clicked" , G_CALLBACK(Cos) , NULL);
 g_signal_connect(G_OBJECT(button4) , "clicked" , G_CALLBACK(Tan) , NULL);
 g_signal_connect(G_OBJECT(button5) , "clicked" , G_CALLBACK(Exp) , NULL);
 g_signal_connect(G_OBJECT(button6) , "clicked" , G_CALLBACK(Mathpowxy) , NULL);
 g_signal_connect(G_OBJECT(button7) , "clicked" , G_CALLBACK(Cube) , NULL);
 g_signal_connect(G_OBJECT(button8) , "clicked" , G_CALLBACK(Square) , NULL);
 g_signal_connect(G_OBJECT(button9) , "clicked" , G_CALLBACK(Log_e) , NULL);
 g_signal_connect(G_OBJECT(button10) , "clicked" , G_CALLBACK(Log_10) , NULL);
 g_signal_connect(G_OBJECT(button11) , "clicked" , G_CALLBACK(Factorial) , NULL);
 g_signal_connect(G_OBJECT(button12) , "clicked" , G_CALLBACK(Inverse) , NULL);
 g_signal_connect(G_OBJECT(button25) , "clicked" , G_CALLBACK(Division) , NULL);
 g_signal_connect(G_OBJECT(button26) , "clicked" , G_CALLBACK(Mul) , NULL);
 g_signal_connect(G_OBJECT(button27) , "clicked" , G_CALLBACK(Sub) , NULL);
 g_signal_connect(G_OBJECT(button28) , "clicked" , G_CALLBACK(Add) , NULL);
 g_signal_connect(G_OBJECT(button30) , "clicked" , G_CALLBACK(And) , NULL);
 g_signal_connect(G_OBJECT(button31) , "clicked" , G_CALLBACK(Or) , NULL);
 g_signal_connect(G_OBJECT(button32) , "clicked" , G_CALLBACK(Mod) , NULL);
 g_signal_connect(G_OBJECT(button34) , "clicked" , G_CALLBACK(Not) , NULL);
 g_signal_connect(G_OBJECT(button35) , "clicked" , G_CALLBACK(Xor) , NULL);
 g_signal_connect(G_OBJECT(button36) , "clicked" , G_CALLBACK(Floor) , NULL);
 /*实现复位功能*/
 g_signal_connect(G_OBJECT(button33) , "clicked" , G_CALLBACK(clear) , NULL);
 /*实现结果输出*/
 g_signal_connect(G_OBJECT(button29) , "clicked" , G_CALLBACK(output) , NULL);
 g_signal_connect(G_OBJECT(window) , "delete_envent" , G_CALLBACK(gtk_main_quit) , NULL);
}
 
/*主函数*/
int main(int argc , char **argv)
{
 a = 0;
 b = 0;
 hasdot = 0;
 gtk_init(&argc , &argv);
 method = 0;
 
 interface();                  /*建立界面*/
 
 addsignal();                  /*添加事件*/
 
 gtk_widget_show(window);
 
 gtk_main();
 return 0;
}
 

效果图如下