GTK实现打开文件操作

/*******************************************************************************
 * Author          :Honker.y
 * Email           :Honker.ying@gmail.com
 * Last modified   :2011-04-21 22:34
 * Filename        :open_file.c
 * version         :1.0
 * Description     :GTK实现打开文件操作
 *Revision         :
 * Compiler        :gcc
 * Install         :
 * Use             :
 *******************************************************************************/
#include <stdlib.h>
#include <gtk/gtk.h>

/**
 * @brief   创建一个新的横向盒，它包含一个图像和一个标签，并返回这个盒
 *
 * @param	xpm_filename
 * @param	label_text
 *
 * @return	box
 */
GtkWidget *
xpm_label_box (gchar * xpm_filename, gchar * label_text)
{
  GtkWidget *box;
  GtkWidget *label;
  GtkWidget *image;
  /* 为图像和标签创建盒 */
  box = gtk_hbox_new (FALSE, 0);
  gtk_container_set_border_width (GTK_CONTAINER (box), 2);
  /* 创建一个图像 */
  image = gtk_image_new_from_file (xpm_filename);
  /* 为按钮创建一个标签 */
  label = gtk_label_new (label_text);
  /* 把图像和标签组装到盒子里 */
  gtk_box_pack_start (GTK_BOX (box), image, FALSE, FALSE, 3);
  gtk_box_pack_start (GTK_BOX (box), label, FALSE, FALSE, 3);
  gtk_widget_show (image);
  gtk_widget_show (label);
  return box;
}

/**
 * @brief	回调函数，打开文件选项
 *
 * @param	widget
 * @param	data
 */
void
button_openfile (GtkWidget * widget, gpointer * data)
{
	GtkWidget *FileSelection;
	FileSelection = gtk_file_selection_new ("选择文件");	/*创建文件选择构件 */
	gtk_file_selection_set_filename (GTK_FILE_SELECTION (FileSelection),
				   "*.jpg *.png *.bmp");
	gtk_widget_show (FileSelection);
}
/**
 * @brief	主函数
 *
 * @param	argc
 * @param	argv[]]
 *
 * @return
 */
int
main (int argc, char *argv[])
{
  /* GtkWidget 是构件的存储类型 */
  GtkWidget *window;
  GtkWidget *button;
  GtkWidget *box;
  gtk_init (&argc, &argv);
  /* 创建一个新窗口 */
  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
  gtk_window_set_title (GTK_WINDOW (window), "DreamPhoto");
  /* 对所有的窗口做这一步 */
  g_signal_connect (G_OBJECT (window), "destroy",
		    G_CALLBACK (gtk_main_quit), NULL);
  g_signal_connect (G_OBJECT (window), "delete_event",
		    G_CALLBACK (gtk_main_quit), NULL);
  /* 设置窗口边框的宽度 */
  gtk_container_set_border_width (GTK_CONTAINER (window), 10);
  /* 创建一个新的按钮 */
  button = gtk_button_new ();
  /* 连接按钮的 "clicked" 信号到我们的回调 */
  g_signal_connect (G_OBJECT (button), "clicked",
		    G_CALLBACK (button_openfile), (gpointer) "打开");
  /* 调用我们的创建盒的函数 */
  box = xpm_label_box ("open.png", "打开");
  /* 组装和显示所有的构件 */
  gtk_widget_show (box);
  gtk_container_add (GTK_CONTAINER (button), box);
  gtk_widget_show (button);
  gtk_container_add (GTK_CONTAINER (window), button);
  gtk_widget_show (window);
  /* 停在这里，等待事件发生。 */
  gtk_main ();
  return 0;
}