TREEVIEW右键菜单示例

在 Form1 上拖一个 TreeView 控件，然后参考一下代码：

unit Unit1;
    interface
    uses
      Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms,
      Dialogs, StdCtrls, Menus, ComCtrls;
    type
      TForm1 = class(TForm)
        TreeView1: TTreeView;
        function CreateMenu(pCation: string): TPopupMenu;
        procedure FormCreate(Sender: TObject);
        procedure TreeView1MouseDown(Sender: TObject; Button: TMouseButton;
          Shift: TShiftState; X, Y: Integer);
      private { Private declarations }
      public { Public declarations }
    end;
    var
      Form1: TForm1;
    implementation
    {$R *.DFM}

    function TForm1.CreateMenu(pCation: string): TPopupMenu;
    var
      pPopupMenu:TPopupMenu;
      pMenu:TMenuItem;
      i:integer;
    begin
      pPopupMenu:=TPopupMenu.Create(self);
      for i:=0 to 5 do
      begin
        pMenu :=TMenuItem.Create(pPopupMenu);
        pMenu.Caption :=pCation+inttostr(i);
        pPopupMenu.Items.Add(pMenu);
      end;
      result:=pPopupMenu;
    end;

    procedure TForm1.FormCreate(Sender: TObject);
    begin
      TreeView1.Items.AddObject(nil,’test’,Pointer(CreateMenu(’test’)));
      TreeView1.Items.AddObject(nil,’xxx’,Pointer(CreateMenu(’xxx’)));
      TreeView1.Items.AddObject(nil,’ddd’,Pointer(CreateMenu(’ddd’)));
      TreeView1.Items.AddObject(nil,’ccc’,Pointer(CreateMenu(’ccc’)));
    end;

    procedure TForm1.TreeView1MouseDown(Sender: TObject; Button: TMouseButton;
      Shift: TShiftState; X, Y: Integer);
    var
      pNode: TTreeNode;
    begin
      if button=mbright then
      begin
        pNode :=TreeView1.GetNodeAt(x,y);
        if (pNode〈〉nil) then
         TreeView1.PopupMenu :=TPopupMenu(pNode.data);
      end
    end;
    end.