Panel as popup menu

Try
procedure TForm1.Panel1Exit(Sender: TObject);
begin
Panel1.Visible := False;
end;

Not sure if this is what you are looking for or not:

for this example, i added a TPopupmenu, and assigned each of the components (on the panel) PopupMenu property to this popup menu.

Then I added two Popup menu items

Hide
Show All

And their events

procedure TForm1.Hide1Click(Sender: TObject);
begin
if TPopupMenu(TMenuItem(Sender).GetParentComponent).PopupComponent is TControl then
  if TControl(TPopupMenu(TMenuItem(Sender).GetParentComponent).PopupComponent).Visible = True then
   TControl(TPopupMenu(TMenuItem(Sender).GetParentComponent).PopupComponent).Visible:= False
  else
   TControl(TPopupMenu(TMenuItem(Sender).GetParentComponent).PopupComponent).Visible:= True;
end;

procedure TForm1.ShowAll1Click(Sender: TObject);
var
 I: Integer;
begin
 for I:= 0 to Panel1.ControlCount - 1 do
  if  not Panel1.Controls[I].Visible then
   Panel1.Controls[I].Visible:= True;
end;


Shane

Sorry, but this is not what I'm looking for. It's my fault because I didn't formulated my question corectly.
Because I don't know if it is possible to insert some components into a popupmenu (such as a listbox and some buttons) I put a panel on my form with some components, this panel "being" my popupmenu. How can I know if the user clicks any component on the screen except my panel and its components so that I can hide it. I want to do something like the list in Delphi that popups and you can select any property or method of a component or something else. It is visible while you select any item in the list but when you click any area on the screen it disappears.

Hope you understand what I mean

Like this maybe

TForm1 = class(TForm)
    procedure FormMouseDown(Sender: TObject; Button: TMouseButton;
      Shift: TShiftState; X, Y: Integer);
  private
    { Private declarations }
    procedure SelectItem(Sender: Tobject);
  public
    { Public declarations }
  end;



procedure TForm1.FormMouseDown(Sender: TObject; Button: TMouseButton;
  Shift: TShiftState; X, Y: Integer);
var
 ListBox1: TListBox;
begin
 if ssRight in Shift then
 begin
   ListBox1:= TListBox.Create(Self);
   ListBox1.Parent:= Self;
   ListBox1.Left:= X;
   ListBox1.Top:= Y;
   ListBox1.Items.Add('Item1');
   ListBox1.OnClick:= SelectItem;
 end;
end;

procedure TForm1.SelectItem(Sender: Tobject);
begin
 // do something with selection
 // TListBox(Sender).Items[TListBox(Sender).ItemIndex]
  TListBox(Sender).Free;
end;

Shane

So do it like this

procedure TForm1.FormClick(Sender: TObject);
begin
Panel1.Visible := False;
end;

Or you could create a Borderless form with a Listbox on it,

then do this

procedure TForm1.FormMouseDown(Sender: TObject; Button: TMouseButton;
  Shift: TShiftState; X, Y: Integer);
begin
 if ssRight in Shift then
 begin
  if MyForm.ShowModal = mrOK then
  begin
   // do something with selection
   //MyListBox.Items[MyListBox.ItemIndex]
  end;
 end;
end;


Shane

:)
I see I was not competely understood.
You say I must write the OnMouseDown event for the form, but what if I click another object on the form? It will not call the main form onmousedown event. And then I must write the onmousedown code for every component on the form, so that when I click it my panel disappear (like a popup menu). So I repeat my question. Is it posible to know when a user clicks a component without writing the onclick event for every object on my form( because all surface of my form is covered with components and I cannot write the onmousedown event for my form bacause it would be vainly?

So, when I press a certain button my panel visible property will become true and when I click everywhere on the desktop except the area ocuppied by my panel its visible property will be changed to false.

Did You try code from my the very first post?

yes there is a way .. no 2 ways :p


Prepare a windowProc for ur application Handle only WM_MouseButton event and do wot ever u want...

Or

Add a Procedure like

  private
   procedure onMyMouseDown(msg : Tmsg) ; message WM_MBUTTONDOWN;

in ur form object

  procedure tForm1.onMyMouseDown(msg : Tmsg) ;
   begin
     // do wot u want

   end;

get Details about  WM_Mbuttondown from the link below

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/winui/winui/windowsuserinterface/userinput/mouseinput/mouseinputreference/mouseinputmessages/wm_mbuttondown.asp

for non zero
In your code I must declare the procedure like this

procedure OnMouseDown(VAR Msg:Tmsg); message WM_MBUTTONDOWN;
else I get this error: "Invalid message parameter list"

And for this code my application does nothing.
I replaced WM_MButtonDown with WM_LButtonDown and The onmousedown proc is called only when I click the form not when I click other object on it.
I think mokule's answer is the best(just my oppinion), but thanks to all for your answers

yw