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ItemCount in a TMenuItem

Posted on 1998-06-17
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337 Views
Last Modified: 2010-04-04
A simple question...

I am using D1 and WFW 3.11.  Can someone please tell me what is wrong in the following procedure.  It won't accept ItemCount as a property of the TMenuItem, but in the help file the example shows it should.  I have created the MenuItem(s) at runtime and want to check/uncheck items when clicked by the user. (So that only the latest clicked item is checked).  If I use Count instead of ItemCount it is accepted but always gives a value of 0.

procedure TForm1.NewItemClick(Sender: TObject);
var FName: String; N: Integer; ThisItem: TMenuItem;
begin
     ThisItem := TMenuItem.Create(File1);
     FName := TMenuItem(Sender).Name;
     For N := 0 to ThisItem.ItemCount-1 do               ThisItem.Items[N].Checked := False;
     TMenuItem(Sender).Checked := True;
     ThisItem.Free;
end;
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Comment
Question by:jdthedj
6 Comments
 
LVL 5

Expert Comment

by:ronit051397
ID: 1353340
As far as I know there is no propery called ItemCount
0
 
LVL 1

Expert Comment

by:Socrates050697
ID: 1353341
Try using TMenuitem.Items.Count

ie in your program



    procedure TForm1.NewItemClick(Sender: TObject);
    var FName: String; N: Integer; ThisItem: TMenuItem;
    begin
         ThisItem := TMenuItem.Create(File1);
         FName := TMenuItem(Sender).Name;
         For N := 0 to ThisItem.Items.Count-1 do               ThisItem.Items[N].Checked := False;
         TMenuItem(Sender).Checked := True;
         ThisItem.Free;
    end;


Socrates
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LVL 3

Accepted Solution

by:
vladika earned 50 total points
ID: 1353342
type
  TForm1 = class(TForm)
    MainMenu1: TMainMenu;
    file1: TMenuItem;
    Button1: TButton;
    Edit1: TEdit;
    procedure Button1Click(Sender: TObject);
    function CreateMenuItem(MenuCaption: string): TMenuItem;
    procedure OnMenuClick(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

function TForm1.CreateMenuItem(MenuCaption: string): TMenuItem;
begin
  Result := TMenuItem.Create(Self);
  Result.Caption := MenuCaption;
  Result.RadioItem := True;        // !!!!!!!!!!!!!!! - only one item checked
  Result.OnClick := OnMenuClick;     // OnClick event handler
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
  // add to menu File1 MenuItem with Caption = Edit1.Text
  File1.Add(CreateMenuItem(Edit1.Text));
end;

procedure TForm1.OnMenuClick(Sender: TObject);
begin
  TMenuItem(Sender).Checked := True;  // Set checked
end;

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LVL 3

Author Comment

by:jdthedj
ID: 1353343
Hi

Thanks for all the replies.  

Socrates - that doesn't work either.

Ronit - One has to wonder why the help file shows ItemCount in its example code

Vladika - D1 doesn't have RadioItem capability in a TMenuItem, so I'm still stuck.

Any further ideas??
0
 
LVL 3

Expert Comment

by:vladika
ID: 1353344
In Delphi 1

type
  TForm1 = class(TForm)
    MainMenu1: TMainMenu;
    file1: TMenuItem;
    Button1: TButton;
    Edit1: TEdit;
    procedure Button1Click(Sender: TObject);
    procedure OnMenuClick(Sender: TObject);
  private
    function CreateMenuItem(MenuCaption: string): TMenuItem;
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

function TForm1.CreateMenuItem(MenuCaption: string): TMenuItem;
begin
  Result := TMenuItem.Create(Self);
  Result.Caption := MenuCaption;   // Set Caption
  Result.OnClick := OnMenuClick;   // OnClick event handler
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
  File1.Add(CreateMenuItem(Edit1.Text));
end;

procedure TForm1.OnMenuClick(Sender: TObject);
var I: Integer;
    ParentMenu: TMenuItem;
begin
  ParentMenu := TMenuItem(Sender).Parent;  // Parent Menu Item
  for I := 0 to ParentMenu.Count-1 do
    ParentMenu.Items[I].Checked := False;  // Uncheck all Items in ParentMenu
  TMenuItem(Sender).Checked := True;  // Check clicked MenuItem
end;

//

ItemCount is misprint -> Use Count



0
 
LVL 3

Author Comment

by:jdthedj
ID: 1353345
Thanks Vladika - I tried all sorts of things, but couldn't figure out how to refer to the MenuItems.  I'm very grateful for your help.
0

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