Is there a command to open the directory actually displayed in DirectoryOpus in Windows Explorer? Sometimes there are reasons for doing this.
Try this :
<?xml version="1.0"?>
<button backcol="none" display="both" textcol="none">
<label>Open folder in Windows Explorer</label>
<icon1>#folderoptions</icon1>
<function type="normal">
<instruction>%SystemRoot%\explorer.exe /n,{s}</instruction>
</function>
</button>
you can change parameters with this : support.microsoft.com/kb/152457/en-us
Many thanks!