Как разделить обработку OnClick и OnDblClick? Ведь OnClick будет вызываться всегда, и перед DblClick.

Code:

procedure TForm1.ListBox1Click(Sender: TObject);

var

Msg: TMsg;

TargetTime: Longint;

begin

{ get the maximum time to wait for a double-click message }

TargetTime := GetTickCount + GetDoubleClickTime;

{ cycle until DblClick received or wait time run out }

while GetTickCount < TargetTime do

   if PeekMessage(Msg, ListBox1.Handle, WM_LBUTTONDBLCLK, WM_LBUTTONDBLCLK, WM_NOREMOVE)

     then Exit; { Double click }

MessageDlg('Single clicked', mtInformation, [mbOK], 0);

end;