Delphi-枚举Windows进程

unit winHWND;

interface

uses
  Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
  Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls;

type
  TForm1 = class(TForm)
    Button1: TButton;
    Edit1: TEdit;
    ListBox1: TListBox;
    Button2: TButton;
    procedure Button1Click(Sender: TObject);
  private
    function EnumWndProc(AWnd: HWND; AlParam: LPARAM): Bool; stdcall;
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
begin
  EnumWindows(@EnumWndProc,1);
end;

function TForm1.EnumWndProc(AWnd: HWND; AlParam: LPARAM): Bool;stdcall;
var
  szText: array[0..254] of char;
begin
  Result := True;
  if IsWindowVisible(awnd) and (awnd<>Form1.Handle) then //要排除掉本窗口
  begin
    GetWindowText(awnd, @szText, 255);
    if szText<>'' then
    begin
      listBox1.Items.Add(inttostr(awnd)+': '+strPas(@szText));
      Result:=False;
    end;
  end;
end;

end.