unit frmResults;

{$MODE Delphi}

interface

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

type
  TResults = class(TForm)
    popListData: TPopupMenu;
    Savelistdata1: TMenuItem;
    TreeView1: TTreeView;
    procedure TreeView1Change(Sender: TObject; Node: TTreeNode);
    procedure Savelistdata1Click(Sender: TObject);
  private
    procedure GetWinInfoText(wnd: HWND; ParentNode: TTreeNode);
    function GetWinInfoClassName(wnd: HWND; ParentNode: TTreeNode): String;
    procedure GetWinInfoStyle(wnd: HWND; ParentNode: TTreeNode);
    procedure GetWinInfoExtendedStyle(wnd: HWND; ParentNode: TTreeNode);
    procedure GetWinInfoPlacement(wnd: HWND; ParentNode: TTreeNode);
    procedure GetWinInfoListData(wnd: HWND; ParentNode: TTreeNode);
    procedure GetWinInfoChildren(wnd: HWND; ParentNode: TTreeNode);
  public
    procedure GetWinInfo(wnd: HWND; ParentNode: TTreeNode);
  end;

var
  Results: TResults;

implementation

uses StyleNames, WindowEnumerator;

{$R *.lfm}

function GetClassNameAsString(wnd: HWND): String;
var
  class_name: array [0..100] of Char;
  len: Integer;
begin
  len := GetClassName(wnd, class_name, 100);
  if len > 0 then
    Result := class_name
  else
    Result := '';
end;

procedure TResults.TreeView1Change(Sender: TObject; Node: TTreeNode);
begin
  if (Assigned(Node) and (Node.Text = '[List Data]')) then
    TreeView1.PopupMenu := popListData
  else
    TreeView1.PopupMenu := nil;
end;

procedure TResults.Savelistdata1Click(Sender: TObject);
var
  f: TextFile;
  n: TTreeNode;
  i: Integer;

  function RemoveTag(const s: String): String;
  var
    pos1: Integer;
  begin
    pos1 := Pos('=', s);
    Result := Copy(s, pos1 + 2, Length(s) - pos1 - 1);
  end;

begin
  AssignFile(f, 'c:\listdata.csv');
  Rewrite(f);
  n := TreeView1.Selected;
  for i := 0 to n.Count - 1 do
  begin
    WriteLn(f, i, ';', RemoveTag(n.Items[i].Items[0].Text), ';',
      RemoveTag(n.Items[i].Items[1].Text));
  end;
  CloseFile(f);
end;

procedure TResults.GetWinInfo(wnd: HWND; ParentNode: TTreeNode);
var
  class_name: String;
begin
  if IsWindow(wnd) then
  begin
    TreeView1.Items.AddChild(ParentNode, 'Handle = ' + IntToStr(wnd));
    GetWinInfoText(wnd, ParentNode);
    class_name := GetWinInfoClassName(wnd, ParentNode);
    TreeView1.Items.AddChild(ParentNode, 'Parent Handle = ' + IntToStr(GetParent(wnd)));
    GetWinInfoStyle(wnd, ParentNode);
    GetWinInfoExtendedStyle(wnd, ParentNode);
    GetWinInfoPlacement(wnd, ParentNode);
    { CompareText for case-insensitive comparison }
    if CompareText(class_name, 'COMBOBOX') = 0 then
    begin
      GetWinInfoListData(wnd, ParentNode);
    end;
    GetWinInfoChildren(wnd, ParentNode);
  end
  else
    TreeView1.Items.AddChild(ParentNode, 'Handle = (INVALID HANDLE)');
end;

procedure TResults.GetWinInfoText(wnd: HWND; ParentNode: TTreeNode);
var
  len: Integer;
  Text: PChar;
begin
  len := GetWindowTextLength(wnd) + 1;
  GetMem(Text, len);
  GetWindowText(wnd, Text, len);
  TreeView1.Items.AddChild(ParentNode, 'Caption = ' + Text);
  FreeMem(Text);
end;

function TResults.GetWinInfoClassName(wnd: HWND; ParentNode: TTreeNode): String;
begin
  Result := GetClassNameAsString(wnd);
  TreeView1.Items.AddChild(ParentNode, 'Class name = ' + Result);
end;

procedure TResults.GetWinInfoStyle(wnd: HWND; ParentNode: TTreeNode);
var
  style: Integer;
  list: TStringList;
  node1: TTreeNode;
  i: Integer;
begin
  style := GetWindowLong(wnd, GWL_STYLE);
  list := GetWindowStyleNames(style);

  with TreeView1.Items do
  begin
    node1 := AddChild(ParentNode, 'Style');
    AddChild(node1, 'Value = ' + IntToStr(style));

    for i := 0 to list.Count - 1 do
      AddChild(node1, list[i]);
  end;

  list.Free();
end;

procedure TResults.GetWinInfoExtendedStyle(wnd: HWND; ParentNode: TTreeNode);
var
  style: Integer;
  list: TStringList;
  node1: TTreeNode;
  i: Integer;
begin
  style := GetWindowLong(wnd, GWL_EXSTYLE);
  list := GetExtendedWindowStyleNames(style);

  with TreeView1.Items do
  begin
    node1 := AddChild(ParentNode, 'Extended Style');
    AddChild(node1, 'Value = ' + IntToStr(style));

    for i := 0 to list.Count - 1 do
      AddChild(node1, list[i]);
  end;

  list.Free();
end;

procedure TResults.GetWinInfoPlacement(wnd: HWND; ParentNode: TTreeNode);
var
  R1, R2: TRect;
  node1: TTreeNode;
begin
  GetWindowRect(wnd, R1);
  Windows.GetClientRect(wnd, R2);
  with TreeView1.Items do
  begin
    node1 := AddChild(ParentNode, 'Placement');
    AddChild(node1, 'Left = ' + IntToStr(R1.Left));
    AddChild(node1, 'Top = ' + IntToStr(R1.Top));
    AddChild(node1, 'Width = ' + IntToStr(R1.Right - R1.Left));
    AddChild(node1, 'Height = ' + IntToStr(R1.Bottom - R1.Top));
    AddChild(node1, 'ClientWidth = ' + IntToStr(R2.Right));
    AddChild(node1, 'ClientHeight = ' + IntToStr(R2.Bottom));
  end;
end;

procedure TResults.GetWinInfoListData(wnd: HWND; ParentNode: TTreeNode);
var
  i, cbcount: Integer;
  node1, node2: TTreeNode;
  itemtext: array [0..300] of Char;
begin
  with TreeView1.Items do
  begin
    node1 := AddChild(ParentNode, '[List Data]');
    cbcount := SendMessage(wnd, CB_GETCOUNT, 0, 0);
    for i := 1 to cbcount do
    begin
      SendMessage(wnd, CB_GETLBTEXT, i - 1, Longint(@itemtext));
      node2 := AddChild(node1, 'Item #' + IntToStr(i));
      AddChild(node2, 'Text = ' + itemtext);
      AddChild(node2, 'Data = ' + IntToStr(SendMessage(wnd,
        CB_GETITEMDATA, i - 1, 0)));
    end;
  end;
end;

type
  TTreeNodeChildConsumer = class
  private
    ParentNode: TTreeNode;
    ChildrenRootNode: TTreeNode;
    ChildCount: Integer;
    Form: TResults;
  public
    constructor Create(Form: TResults; ParentNode: TTreeNode);
    procedure Consume(wnd: HWND);
  end;

constructor TTreeNodeChildConsumer.Create(Form: TResults; ParentNode: TTreeNode);
begin
  Self.Form := Form;
  Self.ParentNode := ParentNode;
  Self.ChildrenRootNode := nil;
  Self.ChildCount := 0;
end;

procedure TTreeNodeChildConsumer.Consume(wnd: HWND);
var
  node2: TTreeNode;
begin
  if not Assigned(ChildrenRootNode) then
    ChildrenRootNode := Form.TreeView1.Items.AddChild(ParentNode,
      'Children information');
  Inc(ChildCount);
  node2 := Form.TreeView1.Items.AddChild(ChildrenRootNode, 'Child #' +
    IntToStr(ChildCount));
  Form.GetWinInfo(Integer(wnd), node2);
end;

procedure TResults.GetWinInfoChildren(wnd: HWND; ParentNode: TTreeNode);
var
  consumer: TTreeNodeChildConsumer;
begin
  consumer := TTreeNodeChildConsumer.Create(Self, ParentNode);
  EnumerateChildWindows(wnd, consumer.Consume);
  consumer.Free;
end;

end.