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{
Free Pascal port of the OpenPTC C++ library.
Copyright (C) 2001-2003, 2006, 2007, 2009-2012 Nikolay Nikolov (nickysn@users.sourceforge.net)
Original C++ version by Glenn Fiedler (ptc@gaffer.org)
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version
with the following modification:
As a special exception, the copyright holders of this library give you
permission to link this library with independent modules to produce an
executable, regardless of the license terms of these independent modules,and
to copy and distribute the resulting executable under terms of your choice,
provided that you also meet, for each linked independent module, the terms
and conditions of the license of that module. An independent module is a
module which is not derived from or based on this library. If you modify
this library, you may extend this exception to your version of the library,
but you are not obligated to do so. If you do not wish to do so, delete this
exception statement from your version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
}
constructor TWin32Keyboard.Create(AWindow: HWND; AThread: DWord; AMultithreaded: Boolean; AEventQueue: TEventQueue);
begin
FMonitor := nil;
FEvent := nil;
inherited Create(AWindow, AThread);
FMonitor := TWin32Monitor.Create;
FEvent := TWin32Event.Create;
{ setup defaults }
FAlt := False;
FShift := False;
FControl := False;
{ setup data }
FEventQueue := AEventQueue;
FMultithreaded := AMultithreaded;
{ enable buffering }
FEnabled := True;
end;
destructor TWin32Keyboard.Destroy;
begin
FEvent.Free;
FMonitor.Free;
inherited Destroy;
end;
procedure TWin32Keyboard.Enable;
begin
{ enable buffering }
FEnabled := True;
end;
procedure TWin32Keyboard.Disable;
begin
{ disable buffering }
FEnabled := False;
end;
function TWin32Keyboard.WndProc(hWnd: HWND; message: DWord; wParam: WPARAM; lParam: LPARAM): LRESULT;
var
i: Integer;
scancode: Integer;
KeyStateArray: array [0..255] of Byte;
AsciiBuf: Word;
press: Boolean;
uni: Integer;
TranslatedCharacters, TranslatedWideCharacters: Integer;
WideStr: WideString;
KeyCode: Integer;
begin
Result := 0;
{ check enabled flag }
if not FEnabled then
exit;
{ process key message }
if (message = WM_KEYDOWN) or (message = WM_KEYUP) or (message = WM_SYSKEYDOWN) or (message = WM_SYSKEYUP) then
begin
press := (message = WM_KEYDOWN) or (message = WM_SYSKEYDOWN);
{ update modifiers }
if wParam = VK_MENU then
{ alt }
FAlt := press
else
if wParam = VK_SHIFT then
{ shift }
FShift := press
else
if wParam = VK_CONTROL then
{ control }
FControl := press;
{ enter monitor if multithreaded }
if FMultithreaded then
FMonitor.Enter;
uni := -1;
if GetKeyboardState(@KeyStateArray) then
begin
scancode := (lParam shr 16) and $FF;
{todo: ToUnicode (Windows NT)}
TranslatedCharacters := ToAscii(wParam, scancode, @KeyStateArray, @AsciiBuf, 0);
if (TranslatedCharacters = 1) or (TranslatedCharacters = 2) then
begin
TranslatedWideCharacters := MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, @AsciiBuf, TranslatedCharacters, nil, 0);
if TranslatedWideCharacters <> 0 then
begin
SetLength(WideStr, TranslatedWideCharacters);
MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, @AsciiBuf, TranslatedCharacters, @WideStr[1], TranslatedWideCharacters);
if Length(WideStr) = 1 then
uni := Ord(WideStr[1]);
end;
end;
end;
KeyCode := wParam;
if wParam = VK_RETURN then
KeyCode := PTCKEY_ENTER;
if wParam = VK_INSERT then
KeyCode := PTCKEY_INSERT;
if wParam = VK_DELETE then
KeyCode := PTCKEY_DELETE;
if wParam = VK_OEM_COMMA then
KeyCode := PTCKEY_COMMA;
if wParam = VK_OEM_PERIOD then
KeyCode := PTCKEY_PERIOD;
{ handle key repeat count }
for i := 1 to lParam and $FFFF do
{ create and insert key object }
FEventQueue.AddEvent(TPTCKeyEvent.Create(KeyCode, uni, FAlt, FShift, FControl, press));
{ check multithreaded flag }
if FMultithreaded then
begin
{ set event }
FEvent.SetEvent;
{ leave monitor }
FMonitor.Leave;
end;
end;
(* else
if message = WM_KEYUP then
{ update modifiers }
if wParam = VK_MENU then
{ alt up }
m_alt := False
else
if wParam = VK_SHIFT then
{ shift up }
m_shift := False
else
if wParam = VK_CONTROL then
{ control up }
m_control := False;*)
end;
|
