<property name="visible">True</property>
<property name="can_focus">True</property>
<child>
- <object class="GisOpenGL" id="main_viewer">
+ <object class="GritsOpenGL" id="main_viewer">
<property name="width_request">600</property>
<property name="height_request">400</property>
<property name="visible">True</property>