Inputbox mit Passwordchar

[Union]

Und wenn Du InputQuery unbedingt ohne Änderung nutzen willst, kannst Du die eingesparte Zeit wieder vergeuden indem Du z.B. einen Thread erstellst, der Dir das Edit für die Passworteingabe patcht

Delphi-Quellcode:

unit Unit1;

interface

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

type

  TSetPasswordCharThread = class(TThread)
  private
    FWindowTitle : string;
    FSecondsToWait : extended;
    FPasswordChar : char;
  public
     constructor Create(AWindowTitle : string);
     procedure Execute; override;
  end;

  TForm1 = class(TForm)
    Button1: TButton;
    Edit1: TEdit;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

uses dateutils;

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
var
   APassword : string;
begin
   APassword := StringOfChar(#32, 10);
   // Suche nach dem Fenster über den Titel und Edits mit Passwordchar patchen
   TSetPasswordCharThread.Create('Authentifizierung');
   InputQuery('Authentifizierung', 'Passwort', APassword);
end;

{ TSetPasswordCharThread }

function EnumChildProc(Wnd: hWnd; PwdChar : Longint): BOOL; stdcall;
var
   szFull: array[0..MAX_PATH] of Char;
begin
   Result := Wnd <> 0;
   if Result then
   begin
      GetClassName(Wnd, szFull, SizeOf(szFull));
      if AnsiUppercase(szFull) = 'TEDIT' then
         SendMessage(Wnd, EM_SETPASSWORDCHAR, PwdChar, 0);
      EnumChildWindows(Wnd, @EnumChildProc, PwdChar);
   end;
end;

constructor TSetPasswordCharThread.Create(AWindowTitle : string);
begin
   inherited Create(True);
   FreeOnTerminate := true;
   FWindowTitle    := AWindowTitle;
   FSecondsToWait  := 3;
   FPasswordChar   := '*';
   Resume;
end;

procedure TSetPasswordCharThread.Execute;
var
   StartTime : TDateTime;
   HPwdWindow : HWnd;
begin
   StartTime := now;
   while not Terminated do
   begin
      sleep(50);
      if (SecondsBetween(now, StartTime) > FSecondsToWait) then
         Terminate;

      HPwdWindow := FindWindow(nil, PAnsiChar(FWindowTitle));
      if HPwdWindow > 0 then
      begin
         EnumChildWindows(HPwdWindow, @EnumChildProc, Ord(FPasswordChar));
         Terminate;
      end;
   end;
end;

end.