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本文转载自:http://blog.csdn.net/caterpillar ... /07/14/2646689.aspx
具體來說,也就是該範例中的createModel()內容無需改變,將GtkComboBox的相對應程式碼,換成建立GtkTreeView的程式碼,例如:
- [size=3]GtkWidget *treeView = gtk_tree_view_new_with_model(createModel());[/size]
- GtkCellRenderer *renderer = gtk_cell_renderer_pixbuf_new();[size=3][/size]
- GtkTreeViewColumn *column = gtk_tree_view_column_new_with_attributes([size=3][/size]
- [size=3] "Icon", renderer,[/size]
- [size=3] "pixbuf",PIXBUF_COL,[/size]
- [size=3] NULL);[/size]
- gtk_tree_view_append_column(GTK_TREE_VIEW (treeView), column);
- renderer = gtk_cell_renderer_text_new();
- column = gtk_tree_view_column_new_with_attributes(
- "Filename", renderer,
- "text", TEXT_COL,
- NULL);
- gtk_tree_view_append_column(GTK_TREE_VIEW (treeView), column);
复制代码 GtkTreeViewColumn是GtkTreeView中的列代表,可用以設定該列的內容如何繪製以及一些相關屬性,基本上以上程式片段中,gtk_tree_view_column_new_with_attributes()與gtk_tree_view_append_column()函式可以用gtk_tree_view_insert_column_with_attributes()函式來簡化,也就是可以簡化為:
- [size=3]GtkWidget *treeView = gtk_tree_view_new_with_model(createModel());[/size]
- GtkCellRenderer *[size=3]renderer = gtk_cell_renderer_pixbuf_new();[/size]
- gtk_tree_view_insert_column_with_attributes([size=3][/size]
- [size=3] GTK_TREE_VIEW(treeView), -1, "Icon", renderer,[/size]
- [size=3] "pixbuf", PIXBUF_COL,[/size]
- [size=3] NULL);[/size]
- renderer = gtk_cell_renderer_text_new();[size=3][/size]
- gtk_tree_view_insert_column_with_attributes([size=3][/size]
- [size=3] GTK_TREE_VIEW(treeView), -1, "Filename", renderer,[/size]
- [size=3] "text", TEXT_COL,[/size]
- [size=3] NULL);[/size]
复制代码 在GtkTreeView當中的選擇,是以為個GtkTreeSelection物件作代表,當選擇改變時,會發出"changed"的Signal,所以要連結Signal與Callback函式,可以如下進行:
- [size=3]GtkTreeSelection *selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(treeView));[/size]
- g_signal_connect(G_OBJECT(selection), "changed",[size=3][/size]
- [size=3] G_CALLBACK(selection_changed), label);[/size]
复制代码 至於Callback函式的部份大同小異,您要從傳遞的GtkTreeSelection中取得GtkTreeView,從GtkTreeView中取得GtkTreeModel,再使用gtk_tree_selection_get_selected()將GtkTreeIter指向選中的列,以取得您想取得的欄位資料:
- [size=3]gboolean selection_changed(GtkTreeSelection *selection, GtkLabel *label) {[/size]
- [size=3] GtkTreeView *treeView;[/size]
- [size=3] GtkTreeModel *model;[/size]
- [size=3] GtkTreeIter iter;[/size]
- [size=3] gchar *active;[/size]
- [size=3] treeView = gtk_tree_selection_get_tree_view(selection);[/size]
- [size=3] model = gtk_tree_view_get_model(treeView);[/size]
- [size=3] gtk_tree_selection_get_selected(selection, &model, &iter);[/size]
- [size=3] gtk_tree_model_get(model, &iter,[/size]
- [size=3] 1, &active,[/size]
- [size=3] -1);[/size]
- [size=3] gtk_label_set_text(label, active);[/size]
- }[size=3][/size]
复制代码
下面的範例是以上說明的綜合示範:
[li]gtk_tree_view_demo.c[/li] - #include <gtk/gtk.h>
-
- enum
- {
- PIXBUF_COL,
- TEXT_COL
- };
-
- GtkTreeModel* createModel()
- {
- const gchar *files[] = {"caterpillar.jpg", "momor.jpg",
- "hamimi.jpg", "bush.jpg"
- };
- GdkPixbuf *pixbuf;
- GtkTreeIter iter;
- GtkListStore *store;
- gint i;
-
- store = gtk_list_store_new(2, GDK_TYPE_PIXBUF, G_TYPE_STRING);
-
- for(i = 0; i < 4; i++)
- {
- pixbuf = gdk_pixbuf_new_from_file(files[[b]i[/b]], NULL);
- gtk_list_store_append(store, &iter);
- gtk_list_store_set(store, &iter,
- PIXBUF_COL, pixbuf,
- TEXT_COL, files[[b]i[/b]],
- -1);
- gdk_pixbuf_unref(pixbuf);
- }
-
- return GTK_TREE_MODEL(store);
- }
-
- gboolean selection_changed(GtkTreeSelection *selection, GtkLabel *label)
- {
- GtkTreeView *treeView;
- GtkTreeModel *model;
- GtkTreeIter iter;
- gchar *active;
-
- treeView = gtk_tree_selection_get_tree_view(selection);
- model = gtk_tree_view_get_model(treeView);
- gtk_tree_selection_get_selected(selection, &model, &iter);
- gtk_tree_model_get(model, &iter,
- 1, &active,
- -1);
-
- gtk_label_set_text(label, active);
- }
-
- int main(int argc, char *argv[])
- {
- GtkWidget *window;
- GtkWidget *treeView;
- GtkCellRenderer *renderer;
- GtkTreeViewColumn *column;
- GtkWidget *label;
- GtkWidget *vbox;
- GtkTreeSelection *selection;
-
- gtk_init(&argc, &argv);
-
- window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
- gtk_window_set_title(GTK_WINDOW(window), "GtkTreeView");
- gtk_window_set_default_size(GTK_WINDOW(window), 200, 50);
-
- treeView = gtk_tree_view_new_with_model(createModel());
-
- renderer = gtk_cell_renderer_pixbuf_new();
- column = gtk_tree_view_column_new_with_attributes(
- "Icon", renderer,
- "pixbuf", PIXBUF_COL,
- NULL);
- gtk_tree_view_append_column(GTK_TREE_VIEW (treeView), column);
-
- renderer = gtk_cell_renderer_text_new();
- column = gtk_tree_view_column_new_with_attributes(
- "Filename", renderer,
- "text", TEXT_COL,
- NULL);
- gtk_tree_view_append_column(GTK_TREE_VIEW (treeView), column);
-
- label = gtk_label_new("caterpillar.jpg");
- vbox = gtk_vbox_new(FALSE, 5);
-
- gtk_box_pack_start(GTK_BOX(vbox), treeView, TRUE, TRUE, 5);
- gtk_box_pack_start(GTK_BOX(vbox), label, TRUE, TRUE, 5);
- gtk_container_add(GTK_CONTAINER(window), vbox);
-
- selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(treeView));
- g_signal_connect(G_OBJECT(selection), "changed",
- G_CALLBACK(selection_changed), label);
-
- g_signal_connect(GTK_OBJECT(window), "destroy",
- G_CALLBACK(gtk_main_quit), NULL);
-
- gtk_widget_show_all(window);
-
- gtk_main();
-
- return 0;
- }
复制代码
一個執行的結果畫面如下所示:
![](http://caterpillar.onlyfun.net/Gossip/GTKGossip/images/GtkTreeViewGtkListStore-1.jpg)
有了以上的基礎,要在GtkTreeView搭配GtkTreeStore就沒什麼好解釋的了,下面這個範例,只是將範例中的createModel()函式,換成 GtkComboBox 與 GtkTreeStore中的createModel()函式,剩下的都沒有改變,也就是為GtkComboBox 與 GtkTreeStore 中的Model換上GtkTreeView的外觀顯示:[li]gtk_tree_view_with_tree_store.c[/li] - #include <gtk/gtk.h>
-
- enum
- {
- PIXBUF_COL,
- TEXT_COL
- };
-
- GtkTreeModel* createModel()
- {
- const gchar *files[] = {"caterpillar.jpg", "momor.jpg",
- "hamimi.jpg", "bush.jpg"
- };
- gchar *stocks[] =
- {
- GTK_STOCK_DIALOG_WARNING,
- GTK_STOCK_STOP,
- GTK_STOCK_NEW,
- GTK_STOCK_CLEAR,
- GTK_STOCK_OPEN
- };
-
- gchar *stockNames[] =
- {
- "WARNING",
- "STOP",
- "NEW",
- "GTK_STOCK_CLEAR",
- "GTK_STOCK_OPEN"
- };
-
- GtkWidget *cellView;
- GdkPixbuf *pixbuf;
- GtkTreeIter iter1, iter2;
- GtkTreeStore *store;
- gint i, j, s;
-
- store = gtk_tree_store_new(2, GDK_TYPE_PIXBUF, G_TYPE_STRING);
- cellView = gtk_cell_view_new();
- for(i = 0; i < 4; i++)
- {
- pixbuf = gdk_pixbuf_new_from_file(files[[b]i[/b]], NULL);
- gtk_tree_store_append(store, &iter1, NULL);
- gtk_tree_store_set(store, &iter1,
- PIXBUF_COL, pixbuf,
- TEXT_COL, files[[b]i[/b]],
- -1);
- gdk_pixbuf_unref(pixbuf);
-
- for(j = 0; j < 3; j++)
- {
- s = rand() % 5;
- pixbuf = gtk_widget_render_icon(cellView, stocks[s],
- GTK_ICON_SIZE_BUTTON, NULL);
- gtk_tree_store_append(store, &iter2, &iter1);
- gtk_tree_store_set(store, &iter2,
- PIXBUF_COL, pixbuf,
- TEXT_COL, stockNames[s],
- -1);
- gdk_pixbuf_unref(pixbuf);
- }
- }
-
- return GTK_TREE_MODEL(store);
- }
-
- gboolean selection_changed(GtkTreeSelection *selection, GtkLabel *label)
- {
- GtkTreeView *treeView;
- GtkTreeModel *model;
- GtkTreeIter iter;
- gchar *active;
-
- treeView = gtk_tree_selection_get_tree_view(selection);
- model = gtk_tree_view_get_model(treeView);
- gtk_tree_selection_get_selected(selection, &model, &iter);
- gtk_tree_model_get(model, &iter,
- 1, &active,
- -1);
-
- gtk_label_set_text(label, active);
- }
-
- int main(int argc, char *argv[])
- {
- GtkWidget *window;
- GtkWidget *treeView;
- GtkCellRenderer *renderer;
- GtkTreeViewColumn *column;
- GtkWidget *label;
- GtkWidget *vbox;
- GtkTreeSelection *selection;
-
- gtk_init(&argc, &argv);
-
- window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
- gtk_window_set_title(GTK_WINDOW(window), "GtkTreeView");
- gtk_window_set_default_size(GTK_WINDOW(window), 200, 50);
-
- treeView = gtk_tree_view_new_with_model(createModel());
-
- renderer = gtk_cell_renderer_pixbuf_new();
- column = gtk_tree_view_column_new_with_attributes(
- "Icon", renderer,
- "pixbuf", PIXBUF_COL,
- NULL);
- gtk_tree_view_append_column(GTK_TREE_VIEW (treeView), column);
-
- renderer = gtk_cell_renderer_text_new();
- column = gtk_tree_view_column_new_with_attributes(
- "Filename", renderer,
- "text", TEXT_COL,
- NULL);
- gtk_tree_view_append_column(GTK_TREE_VIEW (treeView), column);
-
- label = gtk_label_new("caterpillar.jpg");
- vbox = gtk_vbox_new(FALSE, 5);
-
- gtk_box_pack_start(GTK_BOX(vbox), treeView, TRUE, TRUE, 5);
- gtk_box_pack_start(GTK_BOX(vbox), label, TRUE, TRUE, 5);
- gtk_container_add(GTK_CONTAINER(window), vbox);
-
- selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(treeView));
- g_signal_connect(G_OBJECT(selection), "changed",
- G_CALLBACK(selection_changed), label);
-
- g_signal_connect(GTK_OBJECT(window), "destroy",
- G_CALLBACK(gtk_main_quit), NULL);
-
- gtk_widget_show_all(window);
-
- gtk_main();
-
- return 0;
- }
复制代码
一個執行的結果如下所示:
![](http://caterpillar.onlyfun.net/Gossip/GTKGossip/images/GtkTreeViewGtkTreeStrore-1.jpg)
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