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unit Test_TntTreeView_Main;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, ExtCtrls,
Dialogs, StdCtrls,
ComCtrls,
ActiveIMM_TLB, TntActnList, TntAxCtrls, TntButtons, TntCheckLst, TntClasses, TntClipBrd, TntComCtrls,
TntControls, TntDialogs, TntExtActns, TntExtCtrls, TntExtDlgs, TntFileCtrl, TntFormatStrUtils, TntForms,
TntGraphics, TntGrids, TntListActns, TntMenus, TntRegistry, TntStdActns, TntStdCtrls, TntSystem,
TntSysUtils, TntWideStrings, TntWideStrUtils, TntWindows;
type TUnicodeObject = class
procedure Click(Sender: TObject);
procedure TVChange(Sender: TObject; Node: TTreeNode);
end;
type TMyTntTreeView = class(TPanel)
private
MyTreeView: TTntTreeView;
protected
procedure Createhandle; override;
published
Constructor Create(AOwner: TComponent);
end;
type
TForm1 = class(TForm)
Button1: TButton;
Memo1: TMemo;
Button2: TButton;
Button3: TButton;
Button4: TButton;
Button5: TButton;
Button6: TButton;
TreeView1: TTreeView;
procedure Button1Click(Sender: TObject);
procedure FormClose(Sender: TObject; var Action: TCloseAction);
procedure Button2Click(Sender: TObject);
procedure Button3Click(Sender: TObject);
procedure Button4Click(Sender: TObject);
procedure Button5Click(Sender: TObject);
procedure Button6Click(Sender: TObject);
procedure FormCreate(Sender: TObject);
private
{ Déclarations privées }
public
{ Déclarations publiques }
end;
var
Form1: TForm1;
TV: TMyTntTreeView;
TN: TTntTreeNode;
UnicodeObject: TUnicodeObject;
implementation
{$R *.dfm}
procedure TUnicodeObject.Click(Sender: TObject);
begin
Form1.Memo1.Lines.Add('Click');
end;
procedure TUnicodeObject.TVChange(Sender: TObject; Node: TTreeNode);
begin
Form1.Memo1.Lines.Add('Change');
end;
Constructor TMyTntTreeView.Create(AOwner: TComponent);
begin
inherited;
MyTreeView := TTntTreeView.Create(AOwner);
Width := MyTreeView.Width;
Height := MyTreeView.Height;
MyTreeView.Align := alClient;
end;
procedure TMyTntTreeView.Createhandle;
begin
inherited;
MyTreeView.Parent := self;
MyTreeView.Indent := 4;
MyTreeView.ShowRoot := true;
MyTreeView.ShowLines := true;
MyTreeView.ShowButtons := true;
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
if assigned(TV) then begin
showmessage('Objet déjà créé');
exit;
end;
TV := TMyTntTreeView.Create(Form1);
Tv.Parent := self;
end;
procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
begin
TV.Free;
end;
procedure TForm1.Button2Click(Sender: TObject);
begin
if assigned(TV) then
TV.MyTreeView.OnClick := UnicodeObject.Click;
end;
procedure TForm1.Button3Click(Sender: TObject);
begin
// showmessage('Inactif car erreur en compilation.'+#13#10+'Activer la ligne dans le code pour voir le problème...');
if assigned(TV) then
TV.MyTreeView.OnChange := UnicodeObject.TVChange;
end;
procedure TForm1.Button4Click(Sender: TObject);
begin
if assigned(TV) then begin
TV.MyTreeView.Items.Add(nil,'First root');
TV.MyTreeView.Items.Add(nil,'Second root');
end;
end;
procedure TForm1.Button5Click(Sender: TObject);
var
i, n: integer;
begin
if assigned(TV) then begin
TN := nil;
n := TV.MyTreeView.Items.Count;
if n=0 then exit;
for i:=0 to n-1 do begin
if TV.MyTreeView.Items[i].Text='First root' then begin
TN := TV.MyTreeView.Items[i];
exit;
end;
end;
showmessage('non trouvé');
end;
end;
procedure TForm1.Button6Click(Sender: TObject);
begin
if assigned(TV) then begin
if not assigned(TN) then showmessage('Aucun noeud "parent" n''est sélectionné');
TV.MyTreeView.Items.AddChild(TN,'Child 1');
TV.MyTreeView.Items.AddChild(TN,'Child 2');
end;
end;
procedure TForm1.FormCreate(Sender: TObject);
begin
UnicodeObject := TUnicodeObject.Create;
end;
end. |
