对应http://zetcode.com/tutorials/gtktutorial/chinese/firstprograms/

#include <gtk/gtk.h>
//编译使用：gcc 文件名 `pkg-config --libs --cflags gtk+-2.0`
//所有注释仅为我的理解
int main( int argc, char *argv[])
{
	GtkWidget *window;
	gtk_init(&argc, &argv);
	window = gtk_window_new(GTK_WINDOW_TOPLEVEL);

//本次的窗口构建内容

//设置标题
gtk_window_set_title(GTK_WINDOW(window),"This is the TITLE");
//设置大小
gtk_window_set_default_size(GTK_WINDOW(window),400,300);
//设置位置，又有一个常数
gtk_window_set_position(GTK_WINDOW(window),GTK_WIN_POS_CENTER);

gtk_widget_show(window);

//处理关闭的信号，此法方能正常退出
g_signal_connect_swapped(G_OBJECT(window),"destroy",G_CALLBACK(gtk_main_quit),NULL);

gtk_main();
return 0;
}