我用的是Ubuntu 10.04 ，用gedit和vi还有vim编辑器都行。
（第36行，“计算“二字，测试而已，无关语义。）
代码： 全选
#include<gtk/gtk.h>
#include<stdio.h>
#include<string.h>
const char *password="secret";
//以下为两个回调函数
void closeApp(GtkWidget *window,gpointer data){
gtk_main_quit();
}
void button_clicked(GtkWidget *window,gpointer data){
const char *password_text=gtk_entry_get_text(GTK_ENTRY((GtkWidget *)data));
if(strcmp(password_text,password)==0)
printf("Access granted!\n");
else
printf("Access denied!\n");
}
int main(int argc,char *argv[]){
GtkWidget *window;
GtkWidget *username_label,*password_label;
GtkWidget *username_entry,*password_entry;
GtkWidget *ok_button;
GtkWidget *hbox1,*hbox2;
GtkWidget *vbox;
gtk_init(&argc,&argv);
window=gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_title(GTK_WINDOW(window),"GTK+Word2NumCalculater");
gtk_window_set_position(GTK_WINDOW(window),GTK_WIN_POS_CENTER);
gtk_window_set_default_size(GTK_WINDOW(window),200,200);
//以下为连接回调函数
g_signal_connect(GTK_OBJECT(window),"destroy",GTK_SIGNAL_FUNC(closeApp),NULL);
username_label=gtk_label_new("Login:");
password_label=gtk_label_new("Password:");
username_entry=gtk_entry_new();
password_entry=gtk_entry_new();
gtk_entry_set_visibility(GTK_ENTRY(password_entry),FALSE);
ok_button=gtk_button_new_with_label(g_locale_to_utf8("计算",-1,NULL,NULL,NULL));
//以下为连接回调函数
g_signal_connect(GTK_OBJECT(ok_button),"clicked",GTK_SIGNAL_FUNC(button_clicked),password_entry);
//以下为利用vbox和hbox进行界面设计
hbox1=gtk_hbox_new(TRUE,5);
hbox2=gtk_hbox_new(TRUE,5);
vbox=gtk_vbox_new(FALSE,10);
gtk_box_pack_start(GTK_BOX(hbox1),username_label,TRUE,FALSE,5);
gtk_box_pack_start(GTK_BOX(hbox1),username_entry,TRUE,FALSE,5);
gtk_box_pack_start(GTK_BOX(hbox2),password_label,TRUE,FALSE,5);
gtk_box_pack_start(GTK_BOX(hbox2),password_entry,TRUE,FALSE,5);
gtk_box_pack_start(GTK_BOX(vbox),hbox1,FALSE,FALSE,5);
gtk_box_pack_start(GTK_BOX(vbox),hbox2,FALSE,FALSE,5);
gtk_box_pack_start(GTK_BOX(vbox),ok_button,FALSE,FALSE,5);
gtk_container_add(GTK_CONTAINER(window),vbox);
gtk_widget_show_all(window);
gtk_main();
return 0;
}