• Handles.SetSourceHandle
• Icons.StoreIcon
• Handles.SetIcon
• Handles.ClearSelection

• Expert.Legend.Set.Generic.PendingTitanId

seticonlegend.xml

<?xml version="1.0" encoding="utf-8"?>
<avolites.macros>
 
  <macro name="Set Icon as Legend" id="Macros.SetLegend.Icon">
    <sequence>
      <step>Handles.SetSourceHandle("Colours", 0)</step>
      <step>Icons.StoreIcon("1caf5766-67e1-41a0-aec4-dc821f1c160a", "Expert.Legend.Set.Generic.PendingTitanId")</step>
      <step>Handles.SetIcon(Expert.Legend.Set.Generic.PendingTitanId)</step>
      <step>Handles.ClearSelection()</step>
    </sequence>
  </macro>
 
</avolites.macros>

This explains the functional steps within the sequence. For all the other XML details please refer to Formats and syntax

• Handles.SetSourceHandle(“Colours”, 0) selects a handle to set its legend
• Icons.StoreIcon(“..”, “..”) makes sure the icon is stored in the showfile, and gives it a new TitanId. This returned in the property which is passed as 2nd parameter - here: Expert.Legend.Set.Generic.PendingTitanId
• Handles.SetIcon(…) finally sets this imported icon, identified by its Id, as legend for the selected handle
• Handles.ClearSelection() finally deselects the handle

• make this macro available
• this sets a specific handle to a specific quicksketch legend:
• the use of this macro appears to be very limited. However, it can be used in larger macros to initialise a show and set the legends.