if you change the line
this.dm.SetDockLabel(this.tvwtreeView1, "tvwtreeView1");
to be say
this.dm.SetDockLabel(this.tvwtreeView1, "ThisUsedToWork");
then I would expect the title on the rop of the docked window to change to the new value
whereas it stays with the old value, ie it seems to be using the name of the control??
sample.sln.zip