_targets = new wxTreeCtrl (this, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxTR_HIDE_ROOT | wxTR_MULTIPLE | wxTR_HAS_BUTTONS | wxTR_LINES_AT_ROOT);
targets->Add (_targets, 1, wxEXPAND | wxRIGHT, DCPOMATIC_SIZER_GAP);
add_recipients ();
_targets = new wxTreeCtrl (this, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxTR_HIDE_ROOT | wxTR_MULTIPLE | wxTR_HAS_BUTTONS | wxTR_LINES_AT_ROOT);
targets->Add (_targets, 1, wxEXPAND | wxRIGHT, DCPOMATIC_SIZER_GAP);
add_recipients ();