unit1.pas

Delphi7应用编程150例附书源码.rar

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, ComCtrls;

type
  TForm1 = class(TForm)
    TreeView1: TTreeView;
    procedure TreeView1CustomDrawItem(Sender: TCustomTreeView;
      Node: TTreeNode; State: TCustomDrawState; var DefaultDraw: Boolean);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.TreeView1CustomDrawItem(Sender: TCustomTreeView;
  Node: TTreeNode; State: TCustomDrawState; var DefaultDraw: Boolean);
begin
    if Node.Text ='Red' then
    begin
        Sender.Canvas.Brush.Color := clREd;
    end;
    if Node.Text ='Blue' then
    begin
        Sender.Canvas.Brush.Color := clBlue;
    end;
    if Node.Text ='Green' then
    begin
        Sender.Canvas.Brush.Color := clGreen;
    end;
end;

end.