使用GTK编写的hello world小程序

#include <gtk/gtk.h>

gint count=1;

/*该函数实现按下按钮在终端中显示一段话*/
void on_button_clicked(GtkWidget *button,gpointer userdata)
{
g_print("你好，这是hello功能的测试.");
//g_print("%d\n",(gint)userdata);
g_print("%d\n",count);
count=count+1;
}

int main(int argc,char *argv[])
{
GtkWidget *window;     // 声明要创建的构建
GtkWidget *button;
gtk_init(&argc,&argv);

window = gtk_window_new(GTK_WINDOW_TOPLEVEL);     // 创建 window
g_signal_connect(G_OBJECT(window),"delete_event",G_CALLBACK(gtk_main_quit),NULL);  // window 接受 “delete_event”信号

gtk_window_set_title(GTK_WINDOW(window),"Hello 功能实现");      // 窗口标题，大小，显示位置等设置
gtk_window_set_default_size(GTK_WINDOW(window),500,100);
gtk_window_set_position(GTK_WINDOW(window),GTK_WIN_POS_CENTER);
gtk_container_set_border_width(GTK_CONTAINER(window),40);

button = gtk_button_new_with_label("按下此按钮会在终端显示一行信息");
g_signal_connect(G_OBJECT(button),"clicked",G_CALLBACK(on_button_clicked),(gpointer)count);
gtk_container_add(GTK_CONTAINER(window),button);    // 将button放入window中

gtk_widget_show(button);  // 显示button 和 window
gtk_widget_show(window);
gtk_main();
return FALSE;
}