Glade spinbutton：如何将默认值显示为零？

Question

在Glade3中，当我添加一个旋钮时，我想将其最小值和默认值设置为零。

我是通过指定＆＃34; Value＆＃34;旋转按钮为零，以及＆＃34;值＆＃34;和＆＃34;最低价值＆＃34;调整为零。

经过测试，我可以看到它们被设置为零，但旋转按钮上不显示零值。

我们可以在这里看到，在运行程序时，左旋钮显示其默认值（即1），但右旋钮不显示0.

如果我手动编辑glade文件以将<property name="value">0</property>添加到旋钮并运行程序，它将正确显示。

但是，如果我修改了林间空地中的文件，这条线将被林间空地删除，零点不会显示。

无论如何将零显示为默认值（使用glade），或者这是沼地中的错误？

---

编辑：最小工作示例：

Glade生成的xml文件:(不起作用）

<?xml version="1.0" encoding="UTF-8"?>
<!-- Generated with glade 3.16.1 -->
<interface>
  <requires lib="gtk+" version="3.10"/>
  <object class="GtkAdjustment" id="adjustment1">
    <property name="lower">1</property>
    <property name="upper">5</property>
    <property name="value">1</property>
    <property name="step_increment">1</property>
    <property name="page_increment">10</property>
  </object>
  <object class="GtkAdjustment" id="adjustment2">
    <property name="upper">59</property>
    <property name="step_increment">1</property>
    <property name="page_increment">10</property>
  </object>
  <object class="GtkWindow" id="window1">
    <property name="can_focus">False</property>
    <child>
      <object class="GtkBox" id="box1">
        <property name="visible">True</property>
        <property name="can_focus">False</property>
        <property name="orientation">vertical</property>
        <child>
          <object class="GtkSpinButton" id="spinbutton1">
            <property name="visible">True</property>
            <property name="can_focus">True</property>
            <property name="adjustment">adjustment1</property>
            <property name="value">1</property>
          </object>
          <packing>
            <property name="expand">False</property>
            <property name="fill">True</property>
            <property name="position">0</property>
          </packing>
        </child>
        <child>
          <object class="GtkSpinButton" id="spinbutton2">
            <property name="visible">True</property>
            <property name="can_focus">True</property>
            <property name="adjustment">adjustment2</property>
          </object>
          <packing>
            <property name="expand">False</property>
            <property name="fill">True</property>
            <property name="position">1</property>
          </packing>
        </child>
      </object>
    </child>
  </object>
</interface>

我希望这个xml文件看起来像:(有效）

<?xml version="1.0" encoding="UTF-8"?>
<!-- Generated with glade 3.16.1 -->
<interface>
  <requires lib="gtk+" version="3.10"/>
  <object class="GtkAdjustment" id="adjustment1">
    <property name="lower">1</property>
    <property name="upper">5</property>
    <property name="value">1</property>
    <property name="step_increment">1</property>
    <property name="page_increment">10</property>
  </object>
  <object class="GtkAdjustment" id="adjustment2">
    <property name="lower">0</property>
    <property name="upper">59</property>
    <property name="value">0</property>
    <property name="step_increment">1</property>
    <property name="page_increment">10</property>
  </object>
  <object class="GtkWindow" id="window1">
    <property name="can_focus">False</property>
    <child>
      <object class="GtkBox" id="box1">
        <property name="visible">True</property>
        <property name="can_focus">False</property>
        <property name="orientation">vertical</property>
        <child>
          <object class="GtkSpinButton" id="spinbutton1">
            <property name="visible">True</property>
            <property name="can_focus">True</property>
            <property name="adjustment">adjustment1</property>
            <property name="value">1</property>
          </object>
          <packing>
            <property name="expand">False</property>
            <property name="fill">True</property>
            <property name="position">0</property>
          </packing>
        </child>
        <child>
          <object class="GtkSpinButton" id="spinbutton2">
            <property name="visible">True</property>
            <property name="can_focus">True</property>
            <property name="adjustment">adjustment2</property>
            <property name="value">0</property>
          </object>
          <packing>
            <property name="expand">False</property>
            <property name="fill">True</property>
            <property name="position">1</property>
          </packing>
        </child>
      </object>
    </child>
  </object>
</interface>

如果我手动将其更改为此文件（添加了三行），它可以正常工作并且符合预期。但是如果我在Glade中打开它，更改一些内容并保存，Glade会自动删除这三行。

要编译的C代码：

// gcc `pkg-config --cflags gtk+-3.0` mwe.c -o mwe `pkg-config --libs gtk+-3.0`
#define builderfile "mwe.glade"
#include <gtk/gtk.h>
int main(int argc, char *argv[]) {
    GtkBuilder *builder;
    GtkWidget *window;

    gtk_init(&argc, &argv);
    builder = gtk_builder_new();
    gtk_builder_add_from_file(builder, builderfile, NULL);
    window = GTK_WIDGET(gtk_builder_get_object(builder, "window1"));

    g_object_unref(builder);
    gtk_widget_show(window);

    gtk_main();
    return 0;
}