这是deepseek给的代码，我进行了一点修改，实现点击按钮搜索，跳转上一个/下一个。
#include <gtk/gtk.h>
#include <string.h>
typedef struct {
GtkTreeView *treeview;
GtkEntry *entry;
GList *matches; // 所有匹配项的路径列表
GList *current; // 当前显示的匹配项
GtkLabel *status; // 显示状态信息
} SearchData;
/* 清除之前的搜索结果 */
void clear_search_results(SearchData *data)
{
if (data->matches) {
g_list_foreach(data->matches, (GFunc)gtk_tree_path_free, NULL);
g_list_free(data->matches);
data->matches = NULL;
}
data->current = NULL;
}
/* 搜索所有匹配项 */
void perform_search(SearchData *data)
{
GtkTreeModel *model = gtk_tree_view_get_model(data->treeview);
GtkTreeIter iter;
const gchar *search_text = gtk_entry_get_text(data->entry);
clear_search_results(data);
if (search_text == NULL || strlen(search_text) == 0) {
gtk_label_set_text(data->status, "please input");
return;
}
/* 遍历模型查找所有匹配项 */
if (gtk_tree_model_get_iter_first(model, &iter)) {
do {
gchar *text;
gtk_tree_model_get(model, &iter, 0, &text, -1);
if (text && strstr(text, search_text)) {
GtkTreePath *path = gtk_tree_model_get_path(model, &iter);
data->matches = g_list_append(data->matches, path);
}
g_free(text);
} while (gtk_tree_model_iter_next(model, &iter));
}
/* 更新状态 */
guint count = g_list_length(data->matches);
if (count > 0) {
data->current = data->matches;
gchar *msg = g_strdup_printf("total:%d current:1/%d", count, count);
gtk_label_set_text(data->status, msg);
g_free(msg);
/* 跳转到第一个匹配项 */
GtkTreePath *path = (GtkTreePath *)data->current->data;
GtkTreeSelection *selection = gtk_tree_view_get_selection(data->treeview);
gtk_tree_selection_select_path(selection, path);
gtk_tree_view_scroll_to_cell(data->treeview, path, NULL, TRUE, 0.5, 0.0);
} else {
gtk_label_set_text(data->status, "no match found.");
}
}
//查找按钮点击
void on_search_clicked(GtkButton *button, gpointer user_data){
SearchData *data = (SearchData *)user_data;
perform_search(data);
}
/* 跳转到下一个匹配项 */
void on_next_clicked(GtkButton *button, gpointer user_data)
{
SearchData *data = (SearchData *)user_data;
if (data->matches == NULL) {
perform_search(data);
return;
}
if (data->current && data->current->next) {
data->current = data->current->next;
GtkTreePath *path = (GtkTreePath *)data->current->data;
GtkTreeSelection *selection = gtk_tree_view_get_selection(data->treeview);
gtk_tree_selection_select_path(selection, path);
gtk_tree_view_scroll_to_cell(data->treeview, path, NULL, TRUE, 0.5, 0.0);
/* 更新状态 */
guint pos = g_list_position(data->matches, data->current) + 1;
guint total = g_list_length(data->matches);
gchar *msg = g_strdup_printf("total:%d current:%d/%d", total, pos, total);
gtk_label_set_text(data->status, msg);
g_free(msg);
}
}
/* 跳转到上一个匹配项 */
void on_previous_clicked(GtkButton *button, gpointer user_data)
{
SearchData *data = (SearchData *)user_data;
if (data->matches == NULL) {
perform_search(data);
return;
}
if (data->current && data->current->prev) {
data->current = data->current->prev;
GtkTreePath *path = (GtkTreePath *)data->current->data;
GtkTreeSelection *selection = gtk_tree_view_get_selection(data->treeview);
gtk_tree_selection_select_path(selection, path);
gtk_tree_view_scroll_to_cell(data->treeview, path, NULL, TRUE, 0.5, 0.0);
/* 更新状态 */
guint pos = g_list_position(data->matches, data->current) + 1;
guint total = g_list_length(data->matches);
gchar *msg = g_strdup_printf("total:%d current:%d/%d", total, pos, total);
gtk_label_set_text(data->status, msg);
g_free(msg);
}
}
/* 主函数 */
int main(int argc, char *argv[])
{
GtkWidget *window, *scrolled_window, *treeview, *vbox, *hbox, *entry;
GtkWidget *search_btn, *prev_btn, *next_btn, *status_label;
GtkListStore *store;
GtkTreeIter iter;
SearchData *data = g_new0(SearchData, 1);
gtk_init(&argc, &argv);
/* 创建主窗口 */
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_title(GTK_WINDOW(window), "TreeView");
gtk_window_set_default_size(GTK_WINDOW(window), 500, 400);
g_signal_connect(window, "destroy", G_CALLBACK(gtk_main_quit), NULL);
/* 创建垂直容器 */
vbox = gtk_vbox_new(FALSE, 5);
gtk_container_add(GTK_CONTAINER(window), vbox);
/* 创建搜索栏 */
hbox = gtk_hbox_new(FALSE, 5);
gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, FALSE, 0);
/* 创建搜索输入框 */
entry = gtk_entry_new();
gtk_box_pack_start(GTK_BOX(hbox), entry, TRUE, TRUE, 0);
/* 创建搜索按钮 */
search_btn = gtk_button_new_with_label("search");
gtk_box_pack_start(GTK_BOX(hbox), search_btn, FALSE, FALSE, 0);
/* 创建导航按钮栏 */
hbox = gtk_hbox_new(FALSE, 5);
gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, FALSE, 0);
prev_btn = gtk_button_new_with_label("prev");
gtk_box_pack_start(GTK_BOX(hbox), prev_btn, FALSE, FALSE, 0);
next_btn = gtk_button_new_with_label("next");
gtk_box_pack_start(GTK_BOX(hbox), next_btn, FALSE, FALSE, 0);
/* 创建状态标签 */
status_label = gtk_label_new("ready search");
gtk_box_pack_start(GTK_BOX(vbox), status_label, FALSE, FALSE, 0);
/* 创建滚动窗口和树状视图 */
scrolled_window = gtk_scrolled_window_new(NULL, NULL);
gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolled_window),
GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
gtk_box_pack_start(GTK_BOX(vbox), scrolled_window, TRUE, TRUE, 0);
treeview = gtk_tree_view_new();
gtk_container_add(GTK_CONTAINER(scrolled_window), treeview);
/* 初始化搜索数据结构 */
data->treeview = GTK_TREE_VIEW(treeview);
data->entry = GTK_ENTRY(entry);
data->status = GTK_LABEL(status_label);
data->matches = NULL;
data->current = NULL;
/* 创建ListStore并添加一些数据 */
store = gtk_list_store_new(2, G_TYPE_STRING, G_TYPE_INT);
// 添加示例数据
gtk_list_store_append(store, &iter);
gtk_list_store_set(store, &iter, 0, "Apple", 1, 10, -1);
gtk_list_store_append(store, &iter);
gtk_list_store_set(store, &iter, 0, "Banana", 1, 20, -1);
gtk_list_store_append(store, &iter);
gtk_list_store_set(store, &iter, 0, "Orange", 1, 15, -1);
gtk_list_store_append(store, &iter);
gtk_list_store_set(store, &iter, 0, "Grape", 1, 8, -1);
gtk_list_store_append(store, &iter);
gtk_list_store_set(store, &iter, 0, "Watermelon", 1, 3, -1);
// 添加更多数据以便测试
for (int i = 0; i < 50; i++) {
gchar *name = g_strdup_printf("Item %d", i);
gtk_list_store_append(store, &iter);
gtk_list_store_set(store, &iter, 0, name, 1, i, -1);
g_free(name);
}
/* 将模型设置到TreeView */
gtk_tree_view_set_model(GTK_TREE_VIEW(treeview), GTK_TREE_MODEL(store));
/* 添加列到TreeView */
GtkCellRenderer *renderer = gtk_cell_renderer_text_new();
gtk_tree_view_insert_column_with_attributes(GTK_TREE_VIEW(treeview),
-1, "name", renderer,
"text", 0, NULL);
renderer = gtk_cell_renderer_text_new();
gtk_tree_view_insert_column_with_attributes(GTK_TREE_VIEW(treeview),
-1, "number", renderer,
"text", 1, NULL);
/* 连接信号 */
g_signal_connect(search_btn, "clicked", G_CALLBACK(on_search_clicked), data);
g_signal_connect(entry, "activate", G_CALLBACK(on_search_clicked), data);
g_signal_connect(next_btn, "clicked", G_CALLBACK(on_next_clicked), data);
g_signal_connect(prev_btn, "clicked", G_CALLBACK(on_previous_clicked), data);
/* 窗口关闭时清理数据 */
g_signal_connect(window, "destroy", G_CALLBACK(clear_search_results), data);
g_signal_connect(window, "destroy", G_CALLBACK(g_free), data);
gtk_widget_show_all(window);
gtk_main();
return 0;
}原理就是遍历列表数据，找到后就将所在路径储存在链表里，之后上一个，下一个就从链表里取得位置，并且跳转选中列表项。
其中清除搜索结果的函数释放了两处
//释放列表中每个元素指向的 GtkTreePath 对象
g_list_foreach(data->matches, (GFunc)gtk_tree_path_free, NULL);
//释放的是 GList 链表结构本身
g_list_free(data->matches);内存结构示意图
data->matches (GList*)
|
v
[list node #1] -> [list node #2] -> ... -> NULL
| |
v v
GtkTreePath* GtkTreePath*
| |
v v
实际路径数据 实际路径数据
正确的释放顺序就是：
先用 g_list_foreach 释放所有路径对象
再用 g_list_free 释放链表结构
效果