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;
}

编译方式如下，可以写在makefile中：

cc = gcc
all:
    $(cc) -o hello hello.c `pkg-config --cflags --libs gtk+-2.0`

结构如下：

/*点滴积累，我的一小步O(∩_∩)O~*/