rust - GTK4 : How to specify rows and columns of a GtkGrid object within a GtkBuilder ui file

Question

我想使用 GtkBuilder ui 文件来声明一个 3 行 2 列的 GtkGrid。 ui 文件应该可与 gtk4-rs ( https://github.com/gtk-rs/gtk4-rs ) 一起使用。最初我使用 Glade 来获取 ui 文件的第一个草图，但不幸的是 gtk4-rs 确实无法加载它。因此，我将其精简，直到我可以启动我的应用程序。如何将元素分配到列中，以便 gtk4-rs 仍然能够加载它？

<?xml version="1.0" encoding="UTF-8"?>
<interface>
  <requires lib="gtk+" version="3.4"/>
  <object class="GtkApplicationWindow" id="window">
    <child>
      <object class="GtkGrid">
        <child>
          <object class="GtkLabel">
            <property name="label" translatable="yes">Label1</property>
          </object>
        </child>
        <child>
          <object class="GtkButton" id="src_button">
            <property name="label" translatable="yes">Source</property>
          </object>
        </child>
        <child>
          <object class="GtkLabel">
            <property name="label" translatable="yes">Label2</property>
          </object>
        </child>
        <child>
          <object class="GtkButton" id="trg_button">
            <property name="label" translatable="yes">Target</property>
          </object>
        </child>
        <child>
          <object class="GtkButton">
            <property name="label" translatable="yes">Start</property>
            <property name="receives-default">True</property>
          </object>
        </child>
      </object>
    </child>
  </object>
</interface>

在哪里可以找到 GtkGrind 或其他 Gtk4 对象的 DTD？

Answer 1

我不知道你是否发现了，但可能有人会看到这篇文章来寻找答案。解决方案是使用<layout>里面的 child <object> 。在您的示例中它将是:

<?xml version="1.0" encoding="UTF-8"?>
<interface>
    <requires lib="gtk+" version="3.4"/>
    <object class="GtkApplicationWindow" id="window">
        <child>
            <object class="GtkGrid">
                <child>
                    <object class="GtkLabel">
                        <property name="label" translatable="yes">Label1</property>
                        <layout>
                            <property name="row">0</property>
                            <property name="column">0</property>
                        </layout>
                    </object>
                </child>
                <child>
                    <object class="GtkButton" id="src_button">
                        <property name="label" translatable="yes">Source</property>
                        <layout>
                            <property name="row">0</property>
                            <property name="column">1</property>
                        </layout>
                    </object>
                </child>
                <child>
                    <object class="GtkLabel">
                        <property name="label" translatable="yes">Label2</property>
                        <layout>
                            <property name="row">1</property>
                            <property name="column">0</property>
                        </layout>
                    </object>
                </child>
                <child>
                    <object class="GtkButton" id="trg_button">
                        <property name="label" translatable="yes">Target</property>
                        <layout>
                            <property name="row">1</property>
                            <property name="column">1</property>
                        </layout>
                    </object>
                </child>
                <child>
                    <object class="GtkButton">
                        <property name="label" translatable="yes">Start</property>
                        <property name="receives-default">True</property>
                        <layout>
                            <property name="row">3</property>
                            <property name="column">0</property>
                        </layout>
                    </object>
                </child>
            </object>
        </child>
    </object>
</interface>