unitfrmtv.pas

《Delphi7编程100例》代码,书配资料

unit unitFrmTv;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, fcCombo, fctreecombo, fctreeview;

type
  TForm1 = class(TForm)
    fctvcobfcTreeCombo1: TfcTreeCombo;
    procedure fctvcobfcTreeCombo1CheckValidItem(Sender: TObject;
      Node: TfcTreeNode; var Accept: Boolean);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.fctvcobfcTreeCombo1CheckValidItem(Sender: TObject;
  Node: TfcTreeNode; var Accept: Boolean);
begin
  if Node.Text = 'Delphi' then
  begin
    Accept := False;
    ShowMessage('can not select');
  end;
end;

end.