(35,37) public partial class frmAbout : RadegastForm
    (36,43) public partial class frmDetachedTab : RadegastForm
    (37,41) public partial class frmGroupInfo : RadegastForm
    (48,36) public partial class frmMain : RadegastForm
    (38,35) public partial class frmPay : RadegastForm
    (47,44) public partial class frmPrimWorkshop : RadegastForm
    (39,39) public partial class frmProfile : RadegastForm
    (44,40) public partial class frmSettings : RadegastForm
    (39,40) public partial class frmTeleport : RadegastForm

public  event Action<RadegastForm> RadegastFormCreated;

if (inst.RadegastFormCreated!=null)  inst.RadegastFormCreated(this);

instance.RadegastFormCreated += Plug_RadegastFormCreated;

void Plug_RadegastFormCreated(RadegastForm  radForm) {
   radForm.Shown +=
   radForm.Disposing +=
 .. etc
}