Attn: Thomas Reg. Temp Conversion Combobox example code.....

[manchalapraveenk reddy <praveenmkr yahoo com>]

hi Thomoas,
10q for responding i got confused in passing the
parameter to the switch() to
what to pass and the parameters of the eventhandler i
will he thak ful to u if
u can provide the required. plz find my coding for the
same.

/* example-start convert2.c */

       #include<stdio.h> 
       #include<math.h>
       #include<stdlib.h>
       #include <gtk/gtk.h>
       #include<glib.h>
       #include<gdk/gdkkeysyms.h>
                         
       static GtkWidget *entry1,*entry2;
       static GList *glist;
       static char *str;
/*       static         void on_button1_clicked (void)
                                         
         {
           //
gtk_entry_set_text(GTK_ENTRY(entry2),gtk_entry_get_text(GTK_ENTRY(entry1)));
            const char
*str1=gtk_entry_get_text(GTK_ENTRY(entry1));
            int i1=atoi(str1);
            char buf[10];
            int  i2=((i1-32)*(0.556));  
            snprintf(buf,10,"%i",i2);
            gtk_entry_set_text(GTK_ENTRY(entry2),buf);

          //  g_print(gtk_entry_get_text(GTK_ENTRY(entry1)));

            g_print("Hello");
         }*/
        static void fah(void)
        {
          const char
*str1=gtk_entry_get_text(GTK_ENTRY(entry1));
          int i1=atoi(str1);
          int i2;
          char buf[10];
          switch ( GTK_COMBO(combo->entry))
            {
             case 1:

             i2=((i1-32)*(0.556));
             snprintf(buf,10,"%i",i2);
             break;
   
             case  Kelvin:
       
             i2=(((i1-32)*(0.556))+273.15); 
             snprintf(buf,10,"%i",i2);
             break;
          
             default:
          
             snprintf(buf, 10,"%i",i1);
            }
        
          } 


       int main( int   argc,
               char *argv[] )
        {

          GtkWidget *window;
          GtkWidget *table;  
          GtkWidget *label1,*label2;
          GtkWidget *button;
          GtkWidget *combo;
          GtkWidget *button2;
          gtk_init (&argc, &argv);

          /* create a new window */
          window =
gtk_window_new(GTK_WINDOW_TOPLEVEL);
          gtk_widget_set_usize( GTK_WIDGET (window),
300, 200);
          gtk_window_set_title(GTK_WINDOW (window),
"GTK Entry");
          gtk_signal_connect(GTK_OBJECT (window),
"delete_event",
                             (GtkSignalFunc) gtk_exit,
NULL);

          
          table= gtk_table_new(4,2,TRUE);
          gtk_container_add(GTK_CONTAINER (window),
table);

            /* Create a new Label*/
            label1 = gtk_label_new("Enter Value");
           
gtk_table_attach_defaults(GTK_TABLE(table),label1,
0,1,0,1);
            gtk_widget_show(label1);
           
           /* Create a new label*/
           label2 = gtk_label_new("Converted Value");
           gtk_table_attach_defaults(GTK_TABLE(table),
label2, 1,2,0,1);
           gtk_widget_show(label2);
 
          /* Create a new Text Entry */
           entry2 = gtk_entry_new_with_max_length
(50);
           gtk_table_attach_defaults(GTK_TABLE(table),
entry2, 1,2,1,2);
           gtk_widget_show (entry2);
                               

           /* Create a new Text Entry */
            entry1 = gtk_entry_new_with_max_length
(50);
           gtk_table_attach_defaults(GTK_TABLE(table),
entry1, 0,2,1,2);
            gtk_widget_show (entry1);
                             
           /* Create a combo */
           combo=gtk_combo_new();
          
gtk_table_attach_defaults(GTK_TABLE(table),combo,
0,1,2,3);
           glist =g_list_append(glist,"Fahrenheit");
           glist =g_list_append(glist,"Celsius");
           glist =g_list_append(glist,"Kelvin");
          
gtk_combo_set_popdown_strings(GTK_COMBO(combo),glist);
          
str=gtk_entry_get_text(GTK_ENTRY(GTK_COMBO(combo)->entry));
          
//gtk_signal_connect(GTK_COMBO((combo)->entry),"changed",GTK_SIGNAL_FUNC(fah),
glist);

          
gtk_signal_connect(GTK_OBJECT(GTK_COMBO(combo)->entry),"activate",
                             GTK_SIGNAL_FUNC(fah),
&glist);

           gtk_widget_show(combo);    

                             
            /* Create a new button */
            button2 = gtk_button_new_with_label
("Close");
            gtk_signal_connect_object (GTK_OBJECT
(button2), "clicked",
            GTK_SIGNAL_FUNC(gtk_exit),
            GTK_OBJECT (window));
           gtk_table_attach_defaults(GTK_TABLE(table),
button2, 1,2,3,4);

            gtk_widget_show_all(window);
           GTK_WIDGET_SET_FLAGS(button,
GTK_CAN_DEFAULT);
//           gtk_widget_grab_default (button);     
    

            gtk_main();
            return(0);
         }




Regards,
Praveen



=====
Praveen K Reddy 
Mumbai

__________________________________________________
Do You Yahoo!?
Get email alerts & NEW webcam video instant messaging with Yahoo! Messenger
http://im.yahoo.com