我试图使用g_rename和编译器给我奇怪的消息error: called object 'rename' is not a function代码行中error: called object 'rename' is not a function
if (g_rename(old_file_name, full_new_file_name) == -1)
我不明白为什么。
我正在编译命令
cc -Wall -g `pkg-config --cflags --libs gtk+-2.0` app.c -o app
Gcc版本= gcc（Ubuntu 4.4.1-4ubuntu8）4.4.1
Gtk +版本= 2.18.3-1ubuntu
以下是完整的代码：
#include <gtk/gtk.h> #include <string.h> #include <glib.h> #include <glib/gstdio.h> void destroy (GtkWidget*, gpointer); void file_chooser_file_set(GtkWidget*, gpointer); void rename_clicked(GtkWidget*, gpointer); int main (int argc, char* argv[]){ GtkWidget *window, *vbox, *hbox, *rename, *text_rename, *file_chooser; gtk_init (&argc, &argv); window = gtk_window_new(GTK_WINDOW_TOPLEVEL); gtk_window_set_title(GTK_WINDOW(window), "File renamer"); g_signal_connect(G_OBJECT(window), "destroy", G_CALLBACK(destroy), NULL); vbox = gtk_vbox_new(FALSE, 5); file_chooser = gtk_file_chooser_button_new("Choose file to rename:", GTK_FILE_CHOOSER_ACTION_OPEN); g_signal_connect(G_OBJECT(file_chooser), "file-set", G_CALLBACK(file_chooser_file_set), NULL); gtk_box_pack_start(GTK_BOX(vbox), GTK_WIDGET(file_chooser), TRUE, FALSE, 5); hbox = gtk_hbox_new(FALSE, 5); rename = gtk_button_new_with_label("Rename"); gtk_box_pack_end(GTK_BOX(hbox), GTK_WIDGET(rename), FALSE, FALSE, 5); text_rename = gtk_entry_new(); g_signal_connect(G_OBJECT(rename), "clicked", G_CALLBACK(rename_clicked), text_rename); gtk_box_pack_start(GTK_BOX(hbox), GTK_WIDGET(text_rename), TRUE, TRUE, 5); gtk_box_pack_start(GTK_BOX(vbox), GTK_WIDGET(hbox), FALSE, FALSE, 5); gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(vbox)); gtk_widget_show_all(GTK_WIDGET(window)); g_object_set_data(G_OBJECT(file_chooser), "text_rename", (gpointer) text_rename); g_object_set_data(G_OBJECT(file_chooser), "rename", (gpointer) rename); g_object_set_data(G_OBJECT(rename), "file_chooser", (gpointer)file_chooser); gtk_main(); return 0; } #define _CHECK_FATAL_ERROR( e )\ if ( (e) ) { \ g_error("Fatal error: %s", (e)->message); \ g_error_free( (e) );\ } #define _PATH_BUFFER_LENGTH 200 void rename_clicked(GtkWidget* rename, gpointer text_entry) { gchar *new_file_name; gchar *old_file_name; gchar *full_new_file_name = g_new0(gchar, _PATH_BUFFER_LENGTH); GtkFileChooserButton *file_chooser; GError *error = NULL; GRegex *remove_file_name; remove_file_name = g_regex_new("/[^/]+$", 0, 0, &error); _CHECK_FATAL_ERROR( error ); file_chooser = GTK_FILE_CHOOSER_BUTTON(g_object_get_data(G_OBJECT(rename), "file_chooser")); new_file_name = g_strdup( gtk_entry_get_text(GTK_ENTRY(text_entry)) ); old_file_name = g_strdup(gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(file_chooser))); if ( !( new_file_name && old_file_name ) ) g_error("Error while allocating memory!"); /*BEGIN*/ /* full_new_file_name = dirname( old_file_name ) . new_file_name */ gchar *path; path = g_regex_replace(remove_file_name, old_file_name, strlen(old_file_name), 0, "/", 0, &error); _CHECK_FATAL_ERROR( error ); //Path full_new_file_name[0] = 0; g_strlcat(full_new_file_name, path, _PATH_BUFFER_LENGTH); //name g_strlcat(full_new_file_name, new_file_name, _PATH_BUFFER_LENGTH); // g_print("Full file name: %s\n", full_new_file_name); g_free( path ); /*END*/ if (g_rename(old_file_name, full_new_file_name) == -1) g_error("Error while renaming %s to %s", old_file_name, full_new_file_name); gtk_widget_set_sensitive(GTK_WIDGET(rename), FALSE); gtk_widget_set_sensitive(GTK_WIDGET(text_entry), FALSE); g_free( new_file_name ); g_free( full_new_file_name ); g_free( old_file_name ); g_regex_unref( remove_file_name ); } void file_chooser_file_set(GtkWidget* file_chooser, gpointer null) { GtkButton *rename; GtkEntry *text_rename; rename = GTK_BUTTON(g_object_get_data(G_OBJECT(file_chooser), "rename") ); text_rename = GTK_ENTRY(g_object_get_data(G_OBJECT(file_chooser), "text_rename")); gtk_widget_set_sensitive(GTK_WIDGET(rename), TRUE); gtk_widget_set_sensitive(GTK_WIDGET(text_rename), TRUE); } void destroy (GtkWidget* widget, gpointer data) { gtk_main_quit(); }
首先你需要在你的机器上安装libgtk2.0-dev和glibc-dev。 在Unix系统上， g_rename默认是C库函数rename的别名。 您需要#include <stdio.h>才能使用重命名功能，而不会出现该错误。 你看到的确实是gstdio.h头文件中的一个bug，它应该包含stdio.h。
我没有安装glibc-dev软件包。 之后，一切正常，但它抱怨消息：
e4.1.c：在函数'rename_clicked'中： e4.1.c：138：警告：函数'g_rename'的隐式声明