在GTK+2.0中实现简单的多用户登入系统

#include<gtk/gtk.h>
#include<stdio.h>
#include<stdlib.h>

GtkWidget *name;//定义一个全局变量
GtkWidget *pass;
char id1[]="oyx1";//自行定义用户1和用户2
char id2[]="oyx2";
char pw1[]="oyx1";
char pw2[]="oyx2";


void callback(GtkWidget *widget,gpointer data){

const char* username;//字符型指针常量用来存地址
const char* password;
username=(gchar *)malloc(sizeof(gchar));//分配好地址空间存储获取的文本
password=(gchar *)malloc(sizeof(gchar));

while(1){
 username=gtk_entry_get_text(GTK_ENTRY(name));//通过输入框获取函数获取文本
 password=gtk_entry_get_text(GTK_ENTRY(pass));
 
 if(strcmp(id1,username)==0&&strcmp(pw1,password)==0){  //以获取的文本标志位做条件判断
       g_print("登入成功");
         break;
 }
 else if(strcmp(id2,username)==0&&strcmp(pw2,password)==0){
       g_print("登入成功");

         break;
 }
 else{
         g_print("登入失败,请重新输入!");
         break;
 }

   }

    gtk_main_quit(); //终止程序

}

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

GtkWidget *window;
GtkWidget *button;
GtkWidget *label1;
GtkWidget *label2;
GtkWidget *hbox1;
GtkWidget *hbox2;
GtkWidget *vbox1;
GtkWidget *vbox2;
GtkWidget *vbox3;
char *title="火车站出租车拉客系统";
gtk_init(&argc,&argv);//通过地址找到好的参数为后续做准备

window=gtk_window_new(GTK_WINDOW_TOPLEVEL);
g_signal_connect(G_OBJECT(window),"delete_event",G_CALLBACK(gtk_main_quit),NULL);
label1=gtk_label_new("用户名:");
label2=gtk_label_new("密码:");
vbox1=gtk_vbox_new(FALSE,0);
vbox2=gtk_vbox_new(FALSE,10);
vbox3=gtk_vbox_new(FALSE,10);
hbox1=gtk_hbox_new(FALSE,0);
hbox2=gtk_hbox_new(TRUE,0);
button=gtk_button_new_with_label("登入");

gtk_window_set_title(GTK_WINDOW(window),title);
gtk_widget_set_size_request(window,500,450);  //设置窗口的大小
gtk_container_set_border_width(GTK_CONTAINER(window),10);
gtk_container_add(GTK_CONTAINER(window),vbox1);

gtk_box_pack_start(GTK_BOX(vbox2),label1,TRUE,FALSE,0);
gtk_widget_show(label1);
gtk_box_pack_start(GTK_BOX(vbox2),label2,TRUE,FALSE,0);
gtk_widget_show(label2);

gtk_box_pack_start(GTK_BOX(hbox1),vbox2,TRUE,FALSE,0);
gtk_widget_show(vbox2);

name=gtk_entry_new();
gtk_entry_set_visibility(GTK_ENTRY(name),TRUE);
pass=gtk_entry_new();
gtk_entry_set_visibility(GTK_ENTRY(pass),FALSE);
gtk_box_pack_start(GTK_BOX(vbox3),name,TRUE,FALSE,0);
gtk_widget_show(name);
gtk_box_pack_start(GTK_BOX(vbox3),pass,TRUE,FALSE,0);
gtk_widget_show(pass);

gtk_box_pack_start(GTK_BOX(hbox1),vbox3,TRUE,FALSE,0);
gtk_widget_show(vbox3);

gtk_box_pack_start(GTK_BOX(vbox1),hbox1,TRUE,FALSE,0);
gtk_widget_show(hbox1);


button=gtk_button_new_with_label("登入");
g_signal_connect(G_OBJECT(button),"clicked",G_CALLBACK(callback),NULL);
gtk_box_pack_start(GTK_BOX(hbox2),button,TRUE,TRUE,0);
gtk_widget_show(button);

gtk_box_pack_start(GTK_BOX(vbox1),hbox2,TRUE,FALSE,0);
gtk_widget_show(hbox2);

gtk_widget_show(vbox1);
gtk_widget_show_all(window);  //展示所以的构件


gtk_main();
return 0;


}