Fórum Keyboard hook, Beppe acho que voce pode ajudar #228419

peguei um código de uma dll que faz um hook no teclado, porem ela mapea o teclado no padrao ingles estados unidos, pois quando bloqueio o delete, ela tb bloqueia o ponto, tento numerico como o caracter. Se tentar bloquear o F2 ela bloquea, mas tb bloqueia a tecla Q. Alguem sabe como resolver este problema?

Abaixo o código da dll:
unit WHookInt;

interface

uses
Windows, Messages, SysUtils;

function SetHook(WinHandle: HWND; MsgToSend: Integer): Boolean; stdcall; export;
function FreeHook: Boolean; stdcall; export;
function MsgFilterFunc(Code: Integer; wParam, lParam: Longint): Longint stdcall; export;

implementation


// Memory map file stuff

{The CreateFileMapping function creates unnamed file-mapping object
for the specified file.}

function CreateMMF(Name: string; Size: Integer): THandle;
begin
Result := CreateFileMapping($FFFFFFFF, nil, PAGE_READWRITE, 0, Size, PChar(Name));
if Result <> 0 then
begin
if GetLastError = ERROR_ALREADY_EXISTS then
begin
CloseHandle(Result);
Result := 0;
end;
end;
end;

{ The OpenFileMapping function opens a named file-mapping object. }

function OpenMMF(Name: string): THandle;
begin
Result := OpenFileMapping(FILE_MAP_ALL_ACCESS, False, PChar(Name));
// The return value is an open handle to the specified file-mapping object.
end;

{The MapViewOfFile function maps a view of a file into
the address space of the calling process. }

function MapMMF(MMFHandle: THandle): Pointer;
begin
Result := MapViewOfFile(MMFHandle, FILE_MAP_ALL_ACCESS, 0, 0, 0);
end;

{The UnmapViewOfFile function unmaps a mapped view of a file
from the calling process´s address space. }

function UnMapMMF(P: Pointer): Boolean;
begin
Result := UnmapViewOfFile(P);
end;

function CloseMMF(MMFHandle: THandle): Boolean;
begin
Result := CloseHandle(MMFHandle);
end;


// Actual hook stuff

type
TPMsg = ^TMsg;

const
VK_D = $44;
VK_E = $45;
VK_F = $46;
VK_M = $4D;
VK_R = $52;

MMFName = ´MsgFilterHookDemo´;

type
PMMFData = ^TMMFData;
TMMFData = record
NextHook: HHOOK;
WinHandle: HWND;
MsgToSend: Integer;
end;

// global variables, only valid in the process which installs the hook.
var
MMFHandle: THandle;
MMFData: PMMFData;

function UnMapAndCloseMMF: Boolean;
begin
Result := False;
if UnMapMMF(MMFData) then
begin
MMFData := nil;
if CloseMMF(MMFHandle) then
begin
MMFHandle := 0;
Result := True;
end;
end;
end;

{The SetWindowsHookEx function installs an application-defined
hook procedure into a hook chain.
WH_GETMESSAGE Installs a hook procedure that monitors messages
posted to a message queue.
For more information, see the GetMsgProc hook procedure. }

function SetHook(WinHandle: HWND; MsgToSend: Integer): Boolean; stdcall;
begin
Result := False;
if (MMFData = nil) and (MMFHandle = 0) then
begin
MMFHandle := CreateMMF(MMFName, SizeOf(TMMFData));
if MMFHandle <> 0 then
begin
MMFData := MapMMF(MMFHandle);
if MMFData <> nil then
begin
MMFData.WinHandle := WinHandle;
MMFData.MsgToSend := MsgToSend;
MMFData.NextHook := SetWindowsHookEx(WH_GETMESSAGE, MsgFilterFunc, HInstance, 0);

if MMFData.NextHook = 0 then
UnMapAndCloseMMF
else
Result := True;
end
else
begin
CloseMMF(MMFHandle);
MMFHandle := 0;
end;
end;
end;
end;


{The UnhookWindowsHookEx function removes the hook procedure installed
in a hook chain by the SetWindowsHookEx function.}

function FreeHook: Boolean; stdcall;
begin
Result := False;
if (MMFData <> nil) and (MMFHandle <> 0) then
if UnHookWindowsHookEx(MMFData^.NextHook) then
Result := UnMapAndCloseMMF;
end;

(*
GetMsgProc(
nCode: Integer; {the hook code}
wParam: WPARAM; {message removal flag}
lParam: LPARAM {a pointer to a TMsg structure}
): LRESULT; {this function should always return zero}

{ See help on ==> GetMsgProc}
*)

function MsgFilterFunc(Code: Integer; wParam, lParam: Longint): Longint;
var
MMFHandle: THandle;
MMFData: PMMFData;
Kill: boolean;
begin
Result := 0;
MMFHandle := OpenMMF(MMFName);
if MMFHandle <> 0 then
begin
MMFData := MapMMF(MMFHandle);
if MMFData <> nil then
begin
if (Code < 0) or (wParam = PM_NOREMOVE) then
{The CallNextHookEx function passes the hook information to the
next hook procedure in the current hook chain. }
Result := CallNextHookEx(MMFData.NextHook, Code, wParam, lParam)
else
begin
Kill := False;

{ Examples }
with TMsg(Pointer(lParam)^) do
begin
// Kill Numbers
if (wParam >= 4 and (wParam <= 57) then Kill := True;
// Kill Tabulator
if (wParam = VK_TAB) then Kill := True;
end;

{ Example to disable all the start-Key combinations }
case TPMsg(lParam)^.message of
WM_SYSCOMMAND: // The Win Start Key (or Ctrl+ESC)
if TPMsg(lParam)^.wParam = SC_TASKLIST then Kill := True;

WM_HOTKEY:
case ((TPMsg(lParam)^.lParam and $00FF0000) shr 16) of
VK_D, // Win+D ==> Desktop
VK_E, // Win+E ==> Explorer
VK_F, // Win+F+(Ctrl) ==> Find:All (and Find: Computer)
VK_M, // Win+M ==> Minimize all
VK_R, // Win+R ==> Run program.
VK_F1, // Win+F1 ==> Windows Help
VK_PAUSE: // Win+Pause ==> Windows system properties
Kill := True;
end;
end;
if Kill then TPMsg(lParam)^.message := WM_NULL;
Result := CallNextHookEx(MMFData.NextHook, Code, wParam, lParam)
end;
UnMapMMF(MMFData);
end;
CloseMMF(MMFHandle);
end;
end;


initialization
begin
MMFHandle := 0;
MMFData := nil;
end;

finalization
FreeHook;
end.
===============================
{ WINHOOK.dll }
library Winhook;

uses
WHookInt in ´Whookint.pas´;

exports
SetHook index 1,
FreeHook index 2;
end.