GTK 环境编写的hello world ,另外两个按钮分别实现读写文件

最新推荐文章于 2021-05-24 18:28:32 发布

manyikaimen

最新推荐文章于 2021-05-24 18:28:32 发布

阅读量809

点赞数

CC 4.0 BY-SA版权

分类专栏： linux 应用程序开发

本文链接：https://blog.youkuaiyun.com/manyikaimen/article/details/9197175

linux 应用程序开发专栏收录该内容

6 篇文章

订阅专栏

本文介绍了一个使用GTK创建GUI应用程序的示例，该程序包含两个按钮：一个用于读取文件，另一个用于向指定文件中写入文本。通过C语言实现了文件的基本操作，并集成了GTK工具包来构建界面。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

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

static void on_button_read()
{
   FILE *f;
    /*不同的电脑，文件路径可能要改动*/
   if((f = fopen("/home/manyikaimen/leo/liyang.txt","w")) == NULL)
   {
       g_printf("open file failed!\n");
   }
   else
   {
       fclose(f);
       g_printf("button_read was pressed,and we have open the file\n");
   }


}

static void on_button_write()
{
   FILE *f;
   char *p = "hello this world";
    /*不同的电脑，文件路径可能要改动*/
   if((f=fopen("/home/manyikaimen/leo/liyang.txt","w")) == NULL)
   {
       g_printf("sorry,this file does not exist!");
   }
   else
   {
       fwrite(p, strlen(p), 1, f);
       fclose(f);
       g_printf("button_write was pressed,and we have write to the file\n");
   }


}

static gboolean delete_event( GtkWidget *widget,
                              GdkEvent *event,
                              gpointer   data )
{
    gtk_main_quit ();
    return FALSE;
}

int main( int   argc,
          char *argv[] )
{
   GtkWidget *window;
   GtkWidget *button_read;
   GtkWidget *button_write;
   GtkWidget *box1;

   gtk_init (&argc, &argv);

   window = gtk_window_new (GTK_WINDOW_TOPLEVEL);

   gtk_window_set_title (GTK_WINDOW (window), "Hello Buttons!");

   g_signal_connect (window, "delete-event",G_CALLBACK (delete_event), NULL);

   gtk_container_set_border_width (GTK_CONTAINER (window), 10);

   box1 = gtk_hbox_new (FALSE, 0);

   gtk_container_add (GTK_CONTAINER (window), box1);

   button_read = gtk_button_new_with_label ("read file");

   /*为打开按钮添加相应函数*/
   g_signal_connect (button_read, "clicked",G_CALLBACK (on_button_read), NULL);

   gtk_box_pack_start (GTK_BOX(box1), button_read, TRUE, TRUE, 0);

   gtk_widget_show (button_read);

   /*为写按钮添加事件相应函数*/
   button_write = gtk_button_new_with_label ("write file");

   g_signal_connect (button_write, "clicked",G_CALLBACK (on_button_write), NULL);

   gtk_box_pack_start(GTK_BOX (box1), button_write, TRUE, TRUE, 0);

   gtk_widget_show (button_write);

   gtk_widget_show (box1);

   gtk_widget_show (window);

   gtk_main ();

   return 0;
}