从gtk-rs的CompositeTemplate中获取父组件

huangapple
go评论94阅读模式
英文:

Get Parent From gtk-rs CompositeTemplate

问题

在impl GnoteTreeView部分，您可以使用以下代码来获取gtk::TreeView的引用：

  1. let tree_view: &gtk::TreeView = self.upcast_ref();

这将从CompositeTemplate的父类型中获取gtk::TreeView的引用。

英文:

How do I get the parent of a CompositeTemplate in gtk-rs?

  1.     #[derive(Debug, Default, gtk::CompositeTemplate)]
  2.     #[template(resource = "/org/bil4x4/gnote/tree_view")]
  3.     pub struct GnoteTreeView {
  4.         #[template_child]
  5.         pub tree_store: TemplateChild<gtk::TreeStore>,
  7.         pub add_note_visible: Cell<bool>,
  8.         pub add_folder_visible: Cell<bool>,
  9.         pub remove_item_visible: Cell<bool>,
  10.     }
  12.     #[glib::object_subclass]
  13.     impl ObjectSubclass for GnoteTreeView {
  14.         const NAME: &'static str = "GnoteTreeView";
  15.         type Type = super::GnoteTreeView;
  16.         type ParentType = gtk::TreeView;
  18.         fn class_init(klass: &mut Self::Class) {
  20.             klass.bind_template();
  21.             klass.bind_template_instance_callbacks();
  22.         }
  24.         fn instance_init(obj: &glib::subclass::InitializingObject<Self>) {
  25.             obj.init_template();
  26.         }
  27.

so in the impl GnoteTreeView section I am not sure how to get the gtk::TreeView. I am pretty sure it is something like self.imp().?

I have tried looking in self.imp().? and I am expecting to get a reference to the gtk::TreeView from the CompositeTemplate parent.

答案1

得分: 0

答案是使用：

  1. self.imp().instance()
英文:

The answer is to use

  1. self.imp().instance()

huangapple
  • 本文由 发表于 2023年5月11日 11:36:37
  • 转载请务必保留本文链接：https://go.coder-hub.com/76223993.html
  • gtk-rs
  • gtk4
  • rust
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