if(m_butoben->GetValue()){
                                    float Ru2 = FreiX((flaenge), (froben), (frunten), (sel.abstandx));
                                    float Ru1 = Ru2 - sel.abstandx;
                                    // zRu = Auswahl("unterer Rand ???", (Ru1), (Ru2))
                                    // txtUnten.Text = zRu                         
                                
                                
                                char buff[1028]; 
                                char buff1[1028];
                                sprintf(buff,"%f",Ru1);
                                sprintf(buff1,"%f",Ru2);
                                TrimZero(buff);
                                TrimZero(buff1);     
                                wxString list[] = { wxString(buff),wxString(buff1)}; 
    
                                wxSingleChoiceDialog* msg = new wxSingleChoiceDialog(this,_T("Bitte unteren Rand auswählen(oben bindend)"),_T("Lochung oben bindend"),2,list,NULL,wxDEFAULT_DIALOG_STYLE|wxRESIZE_BORDER|wxOK|wxCENTRE);
	                            	msg->ShowModal();       
                                  
                                                            if(msg->ShowModal()==wxID_OK){
                                                            wxString auswahl = msg->GetStringSelection();
                                                            m_txtunten->Clear();
                                                            m_txtunten->AppendText(auswahl);                        
                                                            }
                                  
                                  return;
                                
                                }