GtkFileChooserButon在选择文件之前重置为初始状态

#include <gtk/gtk.h>

void reset_file_chooser(GtkFileChooserButton *file_chooser) {
    // 取消选择的文件
    gtk_file_chooser_unselect_all(GTK_FILE_CHOOSER(file_chooser));
    
    // 将文件夹路径重置为初始状态
    gtk_file_chooser_set_current_folder(GTK_FILE_CHOOSER(file_chooser), NULL);
}

int main(int argc, char *argv[]) {
    gtk_init(&argc, &argv);
    
    // 创建一个GtkFileChooserButton
    GtkWidget *window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
    GtkWidget *file_chooser = gtk_file_chooser_button_new("选择文件", GTK_FILE_CHOOSER_ACTION_OPEN);
    
    // 创建一个重置按钮
    GtkWidget *reset_button = gtk_button_new_with_label("重置");
    g_signal_connect(G_OBJECT(reset_button), "clicked", G_CALLBACK(reset_file_chooser), file_chooser);
    
    // 创建一个布局容器
    GtkWidget *box = gtk_box_new(GTK_ORIENTATION_VERTICAL, 10);
    gtk_box_pack_start(GTK_BOX(box), file_chooser, FALSE, FALSE, 0);
    gtk_box_pack_start(GTK_BOX(box), reset_button, FALSE, FALSE, 0);
    
    gtk_container_add(GTK_CONTAINER(window), box);
    gtk_widget_show_all(window);
    
    gtk_main();
    
    return 0;
}