Jump to a certain key in Regedit

Problem/Question/Abstract:

How to jump to a certain key in Regedit?

Answer:

unit Unit1;

interface

uses
  Windows, Messages, Classes, Controls, Forms, StdCtrls;

type
  TForm1 = class(TForm)
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
    procedure JumpToKey(Key: string);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

uses
  ShellAPI;

procedure TForm1.JumpToKey(Key: string);
var
  i, n: Integer;
  hWin: HWND;
  ExecInfo: ShellExecuteInfoA;
begin
  hWin := FindWindowA(PChar('RegEdit_RegEdit'), nil);
  if hWin = 0 then
    {if Regedit doesn't run then we launch it}
  begin
    FillChar(ExecInfo, 60, #0);
    with ExecInfo do
    begin
      cbSize := 60;
      fMask := SEE_MASK_NOCLOSEPROCESS;
      lpVerb := PChar('open');
      lpFile := PChar('regedit.exe');
      nShow := 1;
    end;
    ShellExecuteExA(@ExecInfo);
    WaitForInputIdle(ExecInfo.hProcess, 200);
    hWin := FindWindowA(PChar('RegEdit_RegEdit'), nil);
  end;
  ShowWindow(hWin, SW_SHOWNORMAL);
  hWin := FindWindowExA(hWin, 0, PChar('SysTreeView32'), nil);
  SetForegroundWindow(hWin);
  i := 30;
  repeat
    SendMessageA(hWin, WM_KEYDOWN, VK_LEFT, 0);
    Dec(i);
  until i = 0;
  Sleep(500);
  SendMessageA(hWin, WM_KEYDOWN, VK_RIGHT, 0);
  Sleep(500);
  i := 1;
  n := Length(Key);
  repeat
    if Key[i] = '\' then
    begin
      SendMessageA(hWin, WM_KEYDOWN, VK_RIGHT, 0);
      Sleep(500);
    end
    else
      SendMessageA(hWin, WM_CHAR, Integer(Key[i]), 0);
    i := i + 1;
  until i = n;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
  JumpToKey('HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer');
end;

end.