Програмная эмуляция нажатия клавиш
01.01.2007
Использование клавиш для управления компонентами
Автор: Robert Wittig
Так, если у меня есть своего рода кнопка (check, radio, speed и т.п.), то почему я не могу с помощью клавиш курсора управлять ею?
После некоторых экспериметов я создал метод, который привожу ниже, способный перехватывать в форме все нажатые клавиши позиционирования и управлять ими выбранным в настоящий момент элементом управления. Имейте в виду, что элементы управления (кроме компонентов Label) должны иметь возможность "выбираться". Для возможности выбрать GroupBox или другой компонент, удедитесь, что их свойство TabStop установлено в True. Вы можете переместить управление на GroupBox, но, так как он не выделяется целиком, узнать, что он действительно имеет управление, достаточно непросто. Если вам не нужно передавать управление в контейнерные элементы (нижеследующий код исходит из этого предположения), то вы можете управлять элементами, просто перемещая управление в сам GroupBox.
В нижеследующем коде FormActivate является обработчиком события формы OnActivate, тогда как ProcessFormMessages никакого отношения к событиям формы не имеет. Не забудьте поместить объявление процедуры ProcessFormMessages в секцию 'Private' класса вашей формы.
Надеюсь, что вам помог.
procedure TForm1.FormActivate(Sender: TObject);
begin
{ Делаем ссылку на нового обработчика сообщений }
Application.OnMessage := ProcessFormMessages;
end;
procedure tForm1.ProcessFormMessages(var Msg: tMsg;
var Handled: Boolean);
var
Increment: Byte;
TheControl: tWinControl;
begin
{ проверка наличия системного сообщения KeyDown }
case Msg.Message of
WM_KEYDOWN: if Msg.wParam in [VK_UP, VK_DOWN, VK_LEFT, VK_RIGHT] then
begin
{ изменяем величину приращения взависимости
от состояния клавиши Shift }
if GetKeyState(VK_SHIFT) and $80 = 0 then
Increment := 8
else
Increment := 1;
{ Этот код перемещает управление на родительский
GroupBox, если один из его контейнерных элементов
получает фокус. Если вам необходимо управлять
элементами внутри контейнера, удалите блок IF и
измените в блоке CASE TheControl на ActiveControl }
if (ActiveControl.Parent is tGroupBox) then
TheControl := ActiveControl.Parent
else
TheControl := ActiveControl;
case Msg.wParam of
VK_UP: TheControl.Top := TheControl.Top - Increment;
VK_DOWN: TheControl.Top := TheControl.Top + Increment;
VK_LEFT: TheControl.Left := TheControl.Left - Increment;
VK_RIGHT: TheControl.Left := TheControl.Left + Increment;
end;
{ сообщаем о том, что сообщение обработано }
Handled := True;
end;
end;
end;
DelphiWorld 6.0
Как посылать нажатие клавиш в элемент управления
Ниже приведена процедура, позволяющаю отправлять нажатия в любой элемент управления (window control), способный принимать ввод с клавиатуры. Вы можете использовать эту технику чтобы включать клавиши NumLock, CapsLock и ScrollLock под Windows NT. Та же техника работает и под Windows 95 для CapsLock и ScrollLock но не работает для клавиши NumLock.
Обратите внимание, что приведены четыре поцедуры: SimulateKeyDown() - эмулировать нажатие клавиши (без отпускания) SimulateKeyUp() - эмулировать отпускание клавиши SimulateKeystroke() - эмулировать удар по клавише (нажатие и отпускание) и SendKeys(), позволяющие Вам гибко контролировать посылаемые сообщения клавиатуры.
SimulateKeyDown(), SimulateKeyUp() и SimulateKeystroke() получают коды виртуальных клавиш (virtural key) (вроде VK_F1). Процедура SimulateKeystroke() получает дополнительный параметр, полезный при эмуляции нажатия PrintScreen. Когда этот параметр равен нулю весь экран будет скопирован в буфер обмена (clipboard). Если дополнительный параметр равен 1 будет скопированно только активное окно.
Четыре метода "button click" демонстрируют использование: ButtonClick1 - включает capslock ButtonClick2 - перехватывает весь экран в буфер обмена (clipboard). ButtonClick3 - перехватывает активное окно в буфер обмена (clipboard). ButtonClick4 - устанавливает фокус в Edit и отправляет в него строку.
procedure SimulateKeyDown(Key: byte);
begin
keybd_event(Key, 0, 0, 0);
end;
procedure SimulateKeyUp(Key: byte);
begin
keybd_event(Key, 0, KEYEVENTF_KEYUP, 0);
end;
procedure SimulateKeystroke(Key: byte; extra: DWORD);
begin
keybd_event(Key, extra, 0, 0);
keybd_event(Key, extra, KEYEVENTF_KEYUP, 0);
end;
procedure SendKeys(s: string);
var
i: integer;
flag: bool;
w: word;
begin
{Get the state of the caps lock key}
flag := not GetKeyState(VK_CAPITAL) and 1 = 0;
{If the caps lock key is on then turn it off}
if flag then
SimulateKeystroke(VK_CAPITAL, 0);
for i := 1 to Length(s) do
begin
w := VkKeyScan(s[i]);
{If there is not an error in the key translation}
if ((HiByte(w) $FF) and (LoByte(w) $FF)) then
begin
{If the key requires the shift key down - hold it down}
if HiByte(w) and 1 = 1 then
SimulateKeyDown(VK_SHIFT);
{Send the VK_KEY}
SimulateKeystroke(LoByte(w), 0);
{If the key required the shift key down - release it}
if HiByte(w) and 1 = 1 then
SimulateKeyUp(VK_SHIFT);
end;
end;
{if the caps lock key was on at start, turn it back on}
if flag then
SimulateKeystroke(VK_CAPITAL, 0);
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
{Toggle the cap lock}
SimulateKeystroke(VK_CAPITAL, 0);
end;
procedure TForm1.Button2Click(Sender: TObject);
begin
{Capture the entire screen to the clipboard}
{by simulating pressing the PrintScreen key}
SimulateKeystroke(VK_SNAPSHOT, 0);
end;
procedure TForm1.Button3Click(Sender: TObject);
begin
{Capture the active window to the clipboard}
{by simulating pressing the PrintScreen key}
SimulateKeystroke(VK_SNAPSHOT, 1);
end;
procedure TForm1.Button4Click(Sender: TObject);
begin
{Set the focus to a window (edit control) and send it a string}
Application.ProcessMessages;
Edit1.SetFocus;
SendKeys('Delphi World is REALY BEST');
end;
DelphiWorld 6.0
К сожалению работает хорошо, только когда фокус у вызывающего окна, в противном случае может глючить
procedure TForm1.SetKey(Key:Integer); begin keybd_event(Key,0,KEYEVENTF_EXTENDEDKEY or KEYEVENTF_KEYUP,0); keybd_event(Key,0,KEYEVENTF_EXTENDEDKEY,0); keybd_event(Key,0,KEYEVENTF_EXTENDEDKEY or KEYEVENTF_KEYUP,0); end;
Применение
SetKey(VK_SCROLL); SetKey(VK_CAPITAL);
DelphiWorld 6.0
Послать нажатие клавиш
Автор: Xavier Pacheco
unit Main;
interface
uses
SysUtils, Windows, Messages, Classes, Graphics, Controls,
Forms, Dialogs, StdCtrls, Menus;
type
TForm1 = class(TForm)
Edit1: TEdit;
Edit2: TEdit;
Button1: TButton;
Button2: TButton;
MainMenu1: TMainMenu;
File1: TMenuItem;
Open1: TMenuItem;
Exit1: TMenuItem;
Button4: TButton;
Button3: TButton;
procedure Button1Click(Sender: TObject);
procedure Button2Click(Sender: TObject);
procedure Open1Click(Sender: TObject);
procedure Exit1Click(Sender: TObject);
procedure Button4Click(Sender: TObject);
procedure FormDestroy(Sender: TObject);
procedure Button3Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.DFM}
uses SendKey, KeyDefs;
procedure TForm1.Button1Click(Sender: TObject);
begin
Edit1.SetFocus; // focus Edit1
SendKeys('^{DELETE}I love...'); // send keys to Edit1
WaitForHook; // let keys playback
Perform(WM_NEXTDLGCTL, 0, 0); // move to Edit2
SendKeys('~delphi ~developers ~guide!'); // send keys to Edit2
end;
procedure TForm1.Button2Click(Sender: TObject);
var
H: hWnd;
PI: TProcessInformation;
SI: TStartupInfo;
begin
FillChar(SI, SizeOf(SI), 0);
SI.cb := SizeOf(SI);
{ Invoke notepad }
if CreateProcess(nil, 'notepad', nil, nil, False, 0, nil, nil, SI,
PI) then
begin
{ wait until notepad is ready to receive keystrokes }
WaitForInputIdle(PI.hProcess, INFINITE);
{ find new notepad window }
H := FindWindow('Notepad', 'Untitled - Notepad');
if SetForegroundWindow(H) then // bring it to front
SendKeys('Hello from the Delphi Developers Guide SendKeys ' +
'example!{ENTER}'); // send keys!
end
else
MessageDlg(Format('Failed to invoke Notepad. Error code %d',
[GetLastError]), mtError, [mbOk], 0);
end;
procedure TForm1.Open1Click(Sender: TObject);
begin
ShowMessage('Open');
end;
procedure TForm1.Exit1Click(Sender: TObject);
begin
Close;
end;
procedure TForm1.Button4Click(Sender: TObject);
begin
WaitForInputIdle(GetCurrentProcess, INFINITE);
SendKeys('@fx');
end;
procedure TForm1.FormDestroy(Sender: TObject);
begin
WaitForHook;
end;
procedure TForm1.Button3Click(Sender: TObject);
begin
WaitForInputIdle(GetCurrentProcess, INFINITE);
SendKeys('@fo');
end;
end.
DelphiWorld 6.0
Послать нажатие клавиш в программу Блокнот
procedure TForm1.Button1Click(Sender: TObject);
var
wnd: HWND;
i: Integer;
s: string;
begin
wnd := FindWindow('notepad', nil);
if wnd <> 0 then
begin
wnd := FindWindowEx(wnd, 0, 'Edit', nil);
// Write Text in Notepad.
// Text ins Notepad schreiben.
s := 'Hello';
for i := 1 to Length(s) do
SendMessage(wnd, WM_CHAR, Word(s[i]), 0);
// Simulate Return Key.
PostMessage(wnd, WM_KEYDOWN, VK_RETURN, 0);
// Simulate Space.
PostMessage(wnd, WM_KEYDOWN, VK_SPACE, 0);
end;
end;
// To send keys to Wordpad:
{...}
wnd := FindWindow('WordPadClass', nil);
if wnd <> 0 then
begin
wnd := FindWindowEx(wnd, 0, 'RICHEDIT', nil);
{...}
Взято с сайта: https://www.swissdelphicenter.ch
Посылаем нажатия клавиш другому приложению
Компонент Sendkeys:
unit SendKeys;
interface
uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs;
type
TSendKeys = class(TComponent)
private
fhandle: HWND;
L: Longint;
fchild: boolean;
fChildText: string;
procedure SetIsChildWindow(const Value: boolean);
procedure SetChildText(const Value: string);
procedure SetWindowHandle(const Value: HWND);
protected
public
published
procedure GetWindowHandle(Text: string);
procedure SendKeys(buffer: string);
property WindowHandle: HWND read fhandle write SetWindowHandle;
property IsChildWindow: boolean read fchild write SetIsChildWindow;
property ChildWindowText: string read fChildText write SetChildText;
end;
procedure Register;
implementation
var
temps: string; {й utilizado para ser acessivel pelas funcs q sao
utilizadas como callbacks}
HTemp: Hwnd;
ChildText: string;
ChildWindow: boolean;
procedure Register;
begin
RegisterComponents('Standard', [TSendKeys]);
end;
{ TSendKeys }
function PRVGetChildHandle(H: HWND; L: Integer): LongBool;
var
p: pchar;
I: integer;
s: string;
begin
I := length(ChildText) + 2;
GetMem(p, i + 1);
SendMessage(H, WM_GetText, i, integer(p));
s := strpcopy(p, s);
if pos(ChildText, s) <> 0 then
begin
HTemp := H;
Result := False
end
else
Result := True;
FreeMem(p);
end;
function PRVSendKeys(H: HWND; L: Integer): LongBool; stdcall;
var
s: string;
i: integer;
begin
i := length(temps);
if i <> 0 then
begin
SetLength(s, i + 2);
GetWindowText(H, pchar(s), i + 2);
if Pos(temps, string(s)) <> 0 then
begin
Result := false;
if ChildWindow then
EnumChildWindows(H, @PRVGetChildHandle, L)
else
HTemp := H;
end
else
Result := True;
end
else
Result := False;
end;
procedure TSendKeys.GetWindowHandle(Text: string);
begin
temps := Text;
ChildText := fChildText;
ChildWindow := fChild;
EnumWindows(@PRVSendKeys, L);
fHandle := HTemp;
end;
procedure TSendKeys.SendKeys(buffer: string);
var
i: integer;
w: word;
D: DWORD;
P: ^DWORD;
begin
P := @D;
SystemParametersInfo(//get flashing timeout on win98
SPI_GETFOREGROUNDLOCKTIMEOUT,
0,
P,
0);
SetForeGroundWindow(fHandle);
for i := 1 to length(buffer) do
begin
w := VkKeyScan(buffer[i]);
keybd_event(w, 0, 0, 0);
keybd_event(w, 0, KEYEVENTF_KEYUP, 0);
end;
SystemParametersInfo(//set flashing TimeOut=0
SPI_SETFOREGROUNDLOCKTIMEOUT,
0,
nil,
0);
SetForegroundWindow(TWinControl(TComponent(Self).Owner).Handle);
//->typecast working...
SystemParametersInfo(//set flashing TimeOut=previous value
SPI_SETFOREGROUNDLOCKTIMEOUT,
D,
nil,
0);
end;
procedure TSendKeys.SetChildText(const Value: string);
begin
fChildText := Value;
end;
procedure TSendKeys.SetIsChildWindow(const Value: boolean);
begin
fchild := Value;
end;
procedure TSendKeys.SetWindowHandle(const Value: HWND);
begin
fHandle := WindowHandle;
end;
end.
Описание:
Данный компонент получает хэндл(handle) любого запущенного окна и даёт возможность отправить по указанному хэндлу любые комбинации нажатия клавиш.
Совместимость: Все версии Delphi
Собственно сам исходничек:
После того, как проинсталируете этот компонент, создайте новое приложение и поместите на форму кнопку и сам компонент SendKeys. Добавьте следующий код в обработчик события OnClick кнопки:
procedure TForm1.Button1Click(Sender: TObject);
begin
// Запускаем Notepad, и ему мы будем посылать нажатия клавиш
WinExec('NotePad.exe', SW_SHOW);
// В параметре процедуры GetWindowHandle помещаем
// текст заголовка окна Notepad'а.
SendKeys1.GetWindowHandle('Untitled - Notepad');
// Если хэндл окна получен успешно, то отправляем ему текст
if SendKeys1.WindowHandle <> 0 then
SendKeys1.SendKeys('This is a test');
// Так же можно отправить код любой кнопки типа
// RETURN, используя следующий код:
// SendKeys1.SendKeys(Chr(13));
end;
Неправда ли весело :)
Gert v.d. Venis
Взято из https://forum.sources.ru
Посылка кода клавиши или текста в окно
unit Unit1;
interface
uses
SysUtils, WinTypes, WinProcs, Messages, Classes, Graphics, Controls,
Forms, Dialogs, StdCtrls;
type
TForm1 = class(TForm)
Button1: TButton;
Button2: TButton;
procedure Button1Click(Sender: TObject);
procedure Button2Click(Sender: TObject);
procedure FormKeyPress(Sender: TObject; var Key: Char);
private
AppInst: THandle;
AppWind: THandle;
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.DFM}
uses ShellAPI;
procedure SendShift(H: HWnd; Down: Boolean);
var
vKey, ScanCode, wParam: Word;
lParam: longint;
begin
vKey := $10;
ScanCode := MapVirtualKey(vKey, 0);
wParam := vKey or ScanCode shl 8;
lParam := longint(ScanCode) shl 16 or 1;
if not (Down) then
lParam := lParam or $C0000000;
SendMessage(H, WM_KEYDOWN, vKey, lParam);
end;
procedure SendCtrl(H: HWnd; Down: Boolean);
var
vKey, ScanCode, wParam: Word;
lParam: longint;
begin
vKey := $11;
ScanCode := MapVirtualKey(vKey, 0);
wParam := vKey or ScanCode shl 8;
lParam := longint(ScanCode) shl 16 or 1;
if not (Down) then
lParam := lParam or $C0000000;
SendMessage(H, WM_KEYDOWN, vKey, lParam);
end;
procedure SendKey(H: Hwnd; Key: char);
var
vKey, ScanCode, wParam: Word;
lParam, ConvKey: longint;
Shift, Ctrl: boolean;
begin
ConvKey := OemKeyScan(ord(Key));
Shift := (ConvKey and $00020000) <> 0;
Ctrl := (ConvKey and $00040000) <> 0;
ScanCode := ConvKey and $000000FF or $FF00;
vKey := ord(Key);
wParam := vKey;
lParam := longint(ScanCode) shl 16 or 1;
if Shift then
SendShift(H, true);
if Ctrl then
SendCtrl(H, true);
SendMessage(H, WM_KEYDOWN, vKey, lParam);
SendMessage(H, WM_CHAR, vKey, lParam);
lParam := lParam or $C0000000;
SendMessage(H, WM_KEYUP, vKey, lParam);
if Shift then
SendShift(H, false);
if Ctrl then
SendCtrl(H, false);
end;
function EnumFunc(Handle: HWnd; TF: TForm1): Bool; far;
begin
TF.AppWind := 0;
if GetWindowWord(Handle, GWW_HINSTANCE) = TF.AppInst then
TF.AppWind := Handle;
result := (TF.AppWind = 0);
end;
procedure TForm1.Button1Click(Sender: TObject);
var
Text: array[0..255] of char;
begin
AppInst := ShellExecute(Handle, 'open', 'notepad.exe', nil, '', SW_NORMAL);
EnumWindows(@EnumFunc, longint(self));
AppWind := GetWindow(AppWind, GW_CHILD);
end;
procedure TForm1.Button2Click(Sender: TObject);
begin
SendKey(AppWind, 'T');
SendKey(AppWind, 'e');
SendKey(AppWind, 's');
SendKey(AppWind, 't');
end;
procedure TForm1.FormKeyPress(Sender: TObject; var Key: Char);
begin
if AppWind <> 0 then
SendKey(AppWind, Key);
end;
end.
DelphiWorld 6.0
Почти полный аналог метода SendKeys из VB
{
SendKeys routine for 32-bit Delphi.
Written by Ken Henderson
Copyright (c) 1995 Ken Henderson email:khen@compuserve.com
This unit includes two routines that simulate popular Visual Basic
routines: Sendkeys and AppActivate. SendKeys takes a PChar
as its first parameter and a boolean as its second, like so:
SendKeys('KeyString', Wait);
where KeyString is a string of key names and modifiers that you want
to send to the current input focus and Wait is a boolean variable or value
that indicates whether SendKeys should wait for each key message to be
processed before proceeding. See the table below for more information.
AppActivate also takes a PChar as its only parameter, like so:
AppActivate('WindowName');
where WindowName is the name of the window that you want to make the
current input focus.
SendKeys supports the Visual Basic SendKeys syntax, as documented below.
Supported modifiers:
+ = Shift
^ = Control
% = Alt
Surround sequences of characters or key names with parentheses in order to
modify them as a group. For example, '+abc' shifts only 'a', while '+(abc)' shifts
all three characters.
Supported special characters
~ = Enter
( = begin modifier group (see above)
) = end modifier group (see above)
{ = begin key name text (see below)
} = end key name text (see below)
Supported characters:
Any character that can be typed is supported. Surround the modifier keys
listed above with braces in order to send as normal text.
Supported key names (surround these with braces):
BKSP, BS, BACKSPACE
BREAK
CAPSLOCK
CLEAR
DEL
DELETE
DOWN
END
ENTER
ESC
ESCAPE
F1
F2
F3
F4
F5
F6
F7
F8
F9
F10
F11
F12
F13
F14
F15
F16
HELP
HOME
INS
LEFT
NUMLOCK
PGDN
PGUP
PRTSC
RIGHT
SCROLLLOCK
TAB
UP
Follow the keyname with a space and a number to send the specified key a
given number of times (e.g., {left 6}).
}
unit sndkey32;
interface
Uses SysUtils, Windows, Messages;
Function SendKeys(SendKeysString : PChar; Wait : Boolean) : Boolean;
function AppActivate(WindowName : PChar) : boolean;
{Buffer for working with PChar's}
const
WorkBufLen = 40;
var
WorkBuf : array[0..WorkBufLen] of Char;
implementation
type
THKeys = array[0..pred(MaxLongInt)] of byte;
var
AllocationSize : integer;
(*
Converts a string of characters and key names to keyboard events and
passes them to Windows.
Example syntax:
SendKeys('abc123{left}{left}{left}def{end}456{left 6}ghi{end}789', True);
*)
Function SendKeys(SendKeysString : PChar; Wait : Boolean) : Boolean;
type
WBytes = array[0..pred(SizeOf(Word))] of Byte;
TSendKey = record
Name : ShortString;
VKey : Byte;
end;
const
{Array of keys that SendKeys recognizes.
If you add to this list, you must be sure to keep it sorted alphabetically
by Name because a binary search routine is used to scan it.}
MaxSendKeyRecs = 41;
SendKeyRecs : array[1..MaxSendKeyRecs] of TSendKey =
(
(Name:'BKSP'; VKey:VK_BACK),
(Name:'BS'; VKey:VK_BACK),
(Name:'BACKSPACE'; VKey:VK_BACK),
(Name:'BREAK'; VKey:VK_CANCEL),
(Name:'CAPSLOCK'; VKey:VK_CAPITAL),
(Name:'CLEAR'; VKey:VK_CLEAR),
(Name:'DEL'; VKey:VK_DELETE),
(Name:'DELETE'; VKey:VK_DELETE),
(Name:'DOWN'; VKey:VK_DOWN),
(Name:'END'; VKey:VK_END),
(Name:'ENTER'; VKey:VK_RETURN),
(Name:'ESC'; VKey:VK_ESCAPE),
(Name:'ESCAPE'; VKey:VK_ESCAPE),
(Name:'F1'; VKey:VK_F1),
(Name:'F10'; VKey:VK_F10),
(Name:'F11'; VKey:VK_F11),
(Name:'F12'; VKey:VK_F12),
(Name:'F13'; VKey:VK_F13),
(Name:'F14'; VKey:VK_F14),
(Name:'F15'; VKey:VK_F15),
(Name:'F16'; VKey:VK_F16),
(Name:'F2'; VKey:VK_F2),
(Name:'F3'; VKey:VK_F3),
(Name:'F4'; VKey:VK_F4),
(Name:'F5'; VKey:VK_F5),
(Name:'F6'; VKey:VK_F6),
(Name:'F7'; VKey:VK_F7),
(Name:'F8'; VKey:VK_F8),
(Name:'F9'; VKey:VK_F9),
(Name:'HELP'; VKey:VK_HELP),
(Name:'HOME'; VKey:VK_HOME),
(Name:'INS'; VKey:VK_INSERT),
(Name:'LEFT'; VKey:VK_LEFT),
(Name:'NUMLOCK'; VKey:VK_NUMLOCK),
(Name:'PGDN'; VKey:VK_NEXT),
(Name:'PGUP'; VKey:VK_PRIOR),
(Name:'PRTSC'; VKey:VK_PRINT),
(Name:'RIGHT'; VKey:VK_RIGHT),
(Name:'SCROLLLOCK'; VKey:VK_SCROLL),
(Name:'TAB'; VKey:VK_TAB),
(Name:'UP'; VKey:VK_UP)
);
{Extra VK constants missing from Delphi's Windows API interface}
VK_NULL=0;
VK_SemiColon=186;
VK_Equal=187;
VK_Comma=188;
VK_Minus=189;
VK_Period=190;
VK_Slash=191;
VK_BackQuote=192;
VK_LeftBracket=219;
VK_BackSlash=220;
VK_RightBracket=221;
VK_Quote=222;
VK_Last=VK_Quote;
ExtendedVKeys : set of byte =
[VK_Up,
VK_Down,
VK_Left,
VK_Right,
VK_Home,
VK_End,
VK_Prior, {PgUp}
VK_Next, {PgDn}
VK_Insert,
VK_Delete];
const
INVALIDKEY = $FFFF {Unsigned -1};
VKKEYSCANSHIFTON = $01;
VKKEYSCANCTRLON = $02;
VKKEYSCANALTON = $04;
UNITNAME = 'SendKeys';
var
UsingParens, ShiftDown, ControlDown, AltDown, FoundClose : Boolean;
PosSpace : Byte;
I, L : Integer;
NumTimes, MKey : Word;
KeyString : String[20];
procedure DisplayMessage(Message : PChar);
begin
MessageBox(0,Message,UNITNAME,0);
end;
function BitSet(BitTable, BitMask : Byte) : Boolean;
begin
Result:=ByteBool(BitTable and BitMask);
end;
procedure SetBit(var BitTable : Byte; BitMask : Byte);
begin
BitTable:=BitTable or Bitmask;
end;
procedure KeyboardEvent(VKey, ScanCode : Byte; Flags : Longint);
var
KeyboardMsg : TMsg;
begin
keybd_event(VKey, ScanCode, Flags,0);
If (Wait) then While (PeekMessage(KeyboardMsg,0,WM_KEYFIRST, WM_KEYLAST, PM_REMOVE)) do begin
TranslateMessage(KeyboardMsg);
DispatchMessage(KeyboardMsg);
end;
end;
procedure SendKeyDown(VKey: Byte; NumTimes : Word; GenUpMsg : Boolean);
var
Cnt : Word;
ScanCode : Byte;
NumState : Boolean;
KeyBoardState : TKeyboardState;
begin
If (VKey=VK_NUMLOCK) then begin
NumState:=ByteBool(GetKeyState(VK_NUMLOCK) and 1);
GetKeyBoardState(KeyBoardState);
If NumState then KeyBoardState[VK_NUMLOCK]:=(KeyBoardState[VK_NUMLOCK] and not 1)
else KeyBoardState[VK_NUMLOCK]:=(KeyBoardState[VK_NUMLOCK] or 1);
SetKeyBoardState(KeyBoardState);
exit;
end;
ScanCode:=Lo(MapVirtualKey(VKey,0));
For Cnt:=1 to NumTimes do
If (VKey in ExtendedVKeys)then begin
KeyboardEvent(VKey, ScanCode, KEYEVENTF_EXTENDEDKEY);
If (GenUpMsg) then
KeyboardEvent(VKey, ScanCode, KEYEVENTF_EXTENDEDKEY or KEYEVENTF_KEYUP)
end else begin
KeyboardEvent(VKey, ScanCode, 0);
If (GenUpMsg) then KeyboardEvent(VKey, ScanCode, KEYEVENTF_KEYUP);
end;
end;
procedure SendKeyUp(VKey: Byte);
var
ScanCode : Byte;
begin
ScanCode:=Lo(MapVirtualKey(VKey,0));
If (VKey in ExtendedVKeys)then
KeyboardEvent(VKey, Sca
else KeyboardEvent(VKey, ScanCode, KEYEVENTF_KEYUP);
end;
procedure SendKey(MKey: Word; NumTimes : Word; GenDownMsg : Boolean);
begin
If (BitSet(Hi(MKey),VKKEYSCANSHIFTON)) then SendKeyDown(VK_SHIFT,1,False);
If (BitSet(Hi(MKey),VKKEYSCANCTRLON)) then SendKeyDown(VK_CONTROL,1,False);
If (BitSet(Hi(MKey),VKKEYSCANALTON)) then SendKeyDown(VK_MENU,1,False);
SendKeyDown(Lo(MKey), NumTimes, GenDownMsg);
If (BitSet(Hi(MKey),VKKEYSCANSHIFTON)) then SendKeyUp(VK_SHIFT);
If (BitSet(Hi(MKey),VKKEYSCANCTRLON)) then SendKeyUp(VK_CONTROL);
If (BitSet(Hi(MKey),VKKEYSCANALTON)) then SendKeyUp(VK_MENU);
end;
{Implements a simple binary search to locate special key name strings}
function StringToVKey(KeyString : ShortString) : Word;
var
Found, Collided : Boolean;
Bottom, Top, Middle : Byte;
begin
Result:=INVALIDKEY;
Bottom:=1;
Top:=MaxSendKeyRecs;
Found:=false;
Middle:=(Bottom+Top) div 2;
Repeat
Collided:=((Bottom=Middle) or (Top=Middle));
If (KeyString=SendKeyRecs[Middle].Name) then begin
Found:=True;
Result:=SendKeyRecs[Middle].VKey;
end else begin
If (KeyString>SendKeyRecs[Middle].Name) then Bottom:=Middle
else Top:=Middle;
Middle:=(Succ(Bottom+Top)) div 2;
end;
Until (Found or Collided);
If (Result=INVALIDKEY) then DisplayMessage('Invalid Key Name');
end;
procedure PopUpShiftKeys;
begin
If (not UsingParens) then begin
If ShiftDown then SendKeyUp(VK_SHIFT);
If ControlDown then SendKeyUp(VK_CONTROL);
If AltDown then SendKeyUp(VK_MENU);
ShiftDown:=false;
ControlDown:=false;
AltDown:=false;
end;
end;
begin
AllocationSize:=MaxInt;
Result:=false;
UsingParens:=false;
ShiftDown:=false;
ControlDown:=false;
AltDown:=false;
I:=0;
L:=StrLen(SendKeysString);
If (L>AllocationSize) then L:=AllocationSize;
If (L=0) then Exit;
while (Ibegin
case SendKeysString[I] of
'(' : begin
UsingParens:=True;
Inc(I);
end;
')' : begin
UsingParens:=False;
PopUpShiftKeys;
Inc(I);
end;
'%' : begin
AltDown:=True;
SendKeyDown(VK_MENU,1,False);
Inc(I);
end;
'+' : begin
ShiftDown:=True;
SendKeyDown(VK_SHIFT,1,False);
Inc(I);
end;
'^' : begin
ControlDown:=True;
SendKeyDown(VK_CONTROL,1,False);
Inc(I);
end;
'{' : begin
NumTimes:=1;
If (SendKeysString[Succ(I)]='{') then begin
MKey:=VK_LEFTBRACKET;
SetBit(Wbytes(MKey)[1],VKKEYSCANSHIFTON);
SendKey(MKey,1,True);
PopUpShiftKeys;
Inc(I,3);
Continue;
end;
KeyString:='';
FoundClose:=False;
while (I<=L) do begin
Inc(I);
If (SendKeysString[I]='}') then begin
FoundClose:=True;
Inc(I);
Break;
end;
KeyString:=KeyString+Upcase(SendKeysString[I]);
end;
If (Not FoundClose) then begin
DisplayMessage('No Close');
Exit;
end;
If (SendKeysString[I]='}') then begin
MKey:=VK_RIGHTBRACKET;
SetBit(Wbytes(MKey)[1],VKKEYSCANSHIFTON);
SendKey(MKey,1,True);
PopUpShiftKeys;
Inc(I);
Continue;
end;
PosSpace:=Pos(' ',KeyString);
If (PosSpace<>0) then begin
NumTimes:=StrToInt(Copy(KeyString,Succ(PosSpace),Length(KeyString)-PosSpace));
KeyString:=Copy(KeyString,1,Pred(PosSpace));
end;
If (Length(KeyString)=1) then MKey:=vkKeyScan(KeyString[1])
else MKey:=StringToVKey(KeyString);
If (MKey<>INVALIDKEY) then begin
SendKey(MKey,NumTimes,True);
PopUpShiftKeys;
Continue;
end;
end;
'~' : begin
SendKeyDown(VK_RETURN,1,True);
PopUpShiftKeys;
Inc(I);
end;
else begin
MKey:=vkKeyScan(SendKeysString[I]);
If (MKey<>INVALIDKEY) then begin
SendKey(MKey,1,True);
PopUpShiftKeys;
end else DisplayMessage('Invalid KeyName');
Inc(I);
end;
end;
end;
Result:=true;
PopUpShiftKeys;
end;
{AppActivate
This is used to set the current input focus to a given window using its
name. This is especially useful for ensuring a window is active before
sending it input messages using the SendKeys function. You can specify
a window's name in its entirety, or only portion of it, beginning from
the left.
}
var
WindowHandle : HWND;
function EnumWindowsProc(WHandle: HWND; lParam: LPARAM): BOOL; export; stdcall;
const
MAX_WINDOW_NAME_LEN = 80;
var
WindowName : array[0..MAX_WINDOW_NAME_LEN] of char;
begin
{Can't test GetWindowText's return value since some windows don't have a title}
GetWindowText(WHandle,WindowName,MAX_WINDOW_NAME_LEN);
Result := (StrLIComp(WindowName,PChar(lParam), StrLen(PChar(lParam))) <> 0);
If (not Result) then WindowHandle:=WHandle;
end;
function AppActivate(WindowName : PChar) : boolean;
begin
try
Result:=true;
WindowHandle:=FindWindow(nil,WindowName);
If (WindowHandle=0) then EnumWindows(@EnumWindowsProc,Integer(PChar(WindowName)));
If (WindowHandle<>0) then begin
SendMessage(WindowHandle, WM_SYSCOMMAND, SC_HOTKEY, WindowHandle);
SendMessage(WindowHandle, WM_SYSCOMMAND, SC_RESTORE, WindowHandle);
end else Result:=false;
except
on Exception do Result:=false;
end;
end;
end.
DelphiWorld 6.0
{PostKeyEx32 function}
procedure PostKeyEx32(key: Word; const shift: TShiftState; specialkey: Boolean);
{************************************************************
* Procedure PostKeyEx32
*
* Parameters:
* key : virtual keycode of the key to send. For printable
* keys this is simply the ANSI code (Ord(character)).
* shift : state of the modifier keys. This is a set, so you
* can set several of these keys (shift, control, alt,
* mouse buttons) in tandem. The TShiftState type is
* declared in the Classes Unit.
* specialkey: normally this should be False. Set it to True to
* specify a key on the numeric keypad, for example.
* Description:
* Uses keybd_event to manufacture a series of key events matching
* the passed parameters. The events go to the control with focus.
* Note that for characters key is always the upper-case version of
* the character. Sending without any modifier keys will result in
* a lower-case character, sending it with [ssShift] will result
* in an upper-case character!
// Code by P. Below
************************************************************}
type
TShiftKeyInfo = record
shift: Byte;
vkey: Byte;
end;
byteset = set of 0..7;
const
shiftkeys: array [1..3] of TShiftKeyInfo =
((shift: Ord(ssCtrl); vkey: VK_CONTROL),
(shift: Ord(ssShift); vkey: VK_SHIFT),
(shift: Ord(ssAlt); vkey: VK_MENU));
var
flag: DWORD;
bShift: ByteSet absolute shift;
i: Integer;
begin
for i := 1 to 3 do
begin
if shiftkeys[i].shift in bShift then
keybd_event(shiftkeys[i].vkey, MapVirtualKey(shiftkeys[i].vkey, 0), 0, 0);
end; { For }
if specialkey then
flag := KEYEVENTF_EXTENDEDKEY
else
flag := 0;
keybd_event(key, MapvirtualKey(key, 0), flag, 0);
flag := flag or KEYEVENTF_KEYUP;
keybd_event(key, MapvirtualKey(key, 0), flag, 0);
for i := 3 downto 1 do
begin
if shiftkeys[i].shift in bShift then
keybd_event(shiftkeys[i].vkey, MapVirtualKey(shiftkeys[i].vkey, 0),
KEYEVENTF_KEYUP, 0);
end; { For }
end; { PostKeyEx32 }
// Example:
procedure TForm1.Button1Click(Sender: TObject);
begin
//Pressing the Left Windows Key
PostKeyEx32(VK_LWIN, [], False);
//Pressing the letter D
PostKeyEx32(Ord('D'), [], False);
//Pressing Ctrl-Alt-C
PostKeyEx32(Ord('C'), [ssctrl, ssAlt], False);
end;
Взято с сайта: https://www.swissdelphicenter.ch
{
With keybd_event API}
procedure TForm1.Button1Click(Sender: TObject);
begin
{or you can also try this simple example to send any
amount of keystrokes at the same time. }
{Pressing the A Key and showing it in the Edit1.Text}
Edit1.SetFocus;
keybd_event(VK_SHIFT, 0, 0, 0);
keybd_event(Ord('A'), 0, 0, 0);
keybd_event(VK_SHIFT, 0, KEYEVENTF_KEYUP, 0);
{Presses the Left Window Key and starts the Run}
keybd_event(VK_LWIN, 0, 0, 0);
keybd_event(Ord('R'), 0, 0, 0);
keybd_event(VK_LWIN, 0, KEYEVENTF_KEYUP, 0);
end;
Взято с сайта: https://www.swissdelphicenter.ch
{With keybd_event API}
procedure PostKeyExHWND(hWindow: HWnd; key: Word; const shift: TShiftState;
specialkey: Boolean);
{************************************************************
* Procedure PostKeyEx
*
* Parameters:
* hWindow: target window to be send the keystroke
* key : virtual keycode of the key to send. For printable
* keys this is simply the ANSI code (Ord(character)).
* shift : state of the modifier keys. This is a set, so you
* can set several of these keys (shift, control, alt,
* mouse buttons) in tandem. The TShiftState type is
* declared in the Classes Unit.
* specialkey: normally this should be False. Set it to True to
* specify a key on the numeric keypad, for example.
* If this parameter is true, bit 24 of the lparam for
* the posted WM_KEY* messages will be set.
* Description:
* This procedure sets up Windows key state array to correctly
* reflect the requested pattern of modifier keys and then posts
* a WM_KEYDOWN/WM_KEYUP message pair to the target window. Then
* Application.ProcessMessages is called to process the messages
* before the keyboard state is restored.
* Error Conditions:
* May fail due to lack of memory for the two key state buffers.
* Will raise an exception in this case.
* NOTE:
* Setting the keyboard state will not work across applications
* running in different memory spaces on Win32 unless AttachThreadInput
* is used to connect to the target thread first.
*Created: 02/21/96 16:39:00 by P. Below
************************************************************}
type
TBuffers = array [0..1] of TKeyboardState;
var
pKeyBuffers: ^TBuffers;
lParam: LongInt;
begin
(* check if the target window exists *)
if IsWindow(hWindow) then
begin
(* set local variables to default values *)
pKeyBuffers := nil;
lParam := MakeLong(0, MapVirtualKey(key, 0));
(* modify lparam if special key requested *)
if specialkey then
lParam := lParam or $1000000;
(* allocate space for the key state buffers *)
New(pKeyBuffers);
try
(* Fill buffer 1 with current state so we can later restore it.
Null out buffer 0 to get a "no key pressed" state. *)
GetKeyboardState(pKeyBuffers^[1]);
FillChar(pKeyBuffers^[0], SizeOf(TKeyboardState), 0);
(* set the requested modifier keys to "down" state in the buffer*)
if ssShift in shift then
pKeyBuffers^[0][VK_SHIFT] := $80;
if ssAlt in shift then
begin
(* Alt needs special treatment since a bit in lparam needs also be set *)
pKeyBuffers^[0][VK_MENU] := $80;
lParam := lParam or $20000000;
end;
if ssCtrl in shift then
pKeyBuffers^[0][VK_CONTROL] := $80;
if ssLeft in shift then
pKeyBuffers^[0][VK_LBUTTON] := $80;
if ssRight in shift then
pKeyBuffers^[0][VK_RBUTTON] := $80;
if ssMiddle in shift then
pKeyBuffers^[0][VK_MBUTTON] := $80;
(* make out new key state array the active key state map *)
SetKeyboardState(pKeyBuffers^[0]);
(* post the key messages *)
if ssAlt in Shift then
begin
PostMessage(hWindow, WM_SYSKEYDOWN, key, lParam);
PostMessage(hWindow, WM_SYSKEYUP, key, lParam or $C0000000);
end
else
begin
PostMessage(hWindow, WM_KEYDOWN, key, lParam);
PostMessage(hWindow, WM_KEYUP, key, lParam or $C0000000);
end;
(* process the messages *)
Application.ProcessMessages;
(* restore the old key state map *)
SetKeyboardState(pKeyBuffers^[1]);
finally
(* free the memory for the key state buffers *)
if pKeyBuffers <> nil then
Dispose(pKeyBuffers);
end; { If }
end;
end; { PostKeyEx }
// Example:
procedure TForm1.Button1Click(Sender: TObject);
var
targetWnd: HWND;
begin
targetWnd := FindWindow('notepad', nil)
if targetWnd <> 0 then
begin
PostKeyExHWND(targetWnd, Ord('I'), [ssAlt], False);
end;
end;
Взято с сайта: https://www.swissdelphicenter.ch
{With SendInput API}
// Example: Send text
procedure TForm1.Button1Click(Sender: TObject);
const
Str: string = 'writing writing writing';
var
Inp: TInput;
I: Integer;
begin
Edit1.SetFocus;
for I := 1 to Length(Str) do
begin
// press
Inp.Itype := INPUT_KEYBOARD;
Inp.ki.wVk := Ord(UpCase(Str[i]));
Inp.ki.dwFlags := 0;
SendInput(1, Inp, SizeOf(Inp));
// release
Inp.Itype := INPUT_KEYBOARD;
Inp.ki.wVk := Ord(UpCase(Str[i]));
Inp.ki.dwFlags := KEYEVENTF_KEYUP;
SendInput(1, Inp, SizeOf(Inp));
Application.ProcessMessages;
Sleep(80);
end;
end;
// Example: Simulate Alt+Tab
procedure SendAltTab;
var
KeyInputs: array of TInput;
KeyInputCount: Integer;
procedure KeybdInput(VKey: Byte; Flags: DWORD);
begin
Inc(KeyInputCount);
SetLength(KeyInputs, KeyInputCount);
KeyInputs[KeyInputCount - 1].Itype := INPUT_KEYBOARD;
with KeyInputs[KeyInputCount - 1].ki do
begin
wVk := VKey;
wScan := MapVirtualKey(wVk, 0);
dwFlags := KEYEVENTF_EXTENDEDKEY;
dwFlags := Flags or dwFlags;
time := 0;
dwExtraInfo := 0;
end;
end;
begin
KeybdInput(VK_MENU, 0); // Alt
KeybdInput(VK_TAB, 0); // Tab
KeybdInput(VK_TAB, KEYEVENTF_KEYUP); // Tab
KeybdInput(VK_MENU, KEYEVENTF_KEYUP); // Alt
SendInput(KeyInputCount, KeyInputs[0], SizeOf(KeyInputs[0]));
end;
Взято с сайта: https://www.swissdelphicenter.ch
Memo1.Perform(WM_CHAR, Ord('A'), 0);
или
SendMessage(Memo1.Handle, WM_CHAR, Ord('A'), 0);
DelphiWorld 6.0
{ **** UBPFD *********** by delphibase.endimus.com ****
>> Эмуляция нажатия клавиши в активном окне
VKey - код виртуальной клавиши (см. описание констант VK_xxxx)
Зависимости: Windows
Автор: Dimka Maslov, mainbox@endimus.ru, ICQ:148442121, Санкт-Петербург
Copyright: Dimka Maslov
Дата: 29 апреля 2002 г.
***************************************************** }
procedure PressKey(VKey: Byte);
begin
keybd_event(VKey, 0, 0, 0);
keybd_event(VKey, 0, KEYEVENTF_KEYUP, 0);
end;
{ **** UBPFD *********** by delphibase.endimus.com ****
>> Эмуляция нажатия клавиши в любом окне, в т.ч. неактивном
Процедура эмулирует нажатие клавиши в любом окне путём посылки ему пары
сообщений WM_KEYDOWN и WM_KEYUP. Процедура принимает два параметра -
Handle окна и код клавиши (см. описание констант VK_xxxx).
Зависимости: Windows
Автор: Dimka Maslov, mainbox@endimus.ru, ICQ:148442121, Санкт-Петербург
Copyright: Dimka Maslov
Дата: 29 апреля 2002 г.
***************************************************** }
procedure EmulateKey(Wnd: HWND; VKey: Integer);
asm
push 0
push edx
push 0101H //WM_KEYUP
push eax
push 0
push edx
push 0100H //WM_KEYDOWN
push eax
call PostMessage
call PostMessage
end;
// Пример использования:
EmulateKey(Edit1.Handle, VK_RETURN);
{ **** UBPFD *********** by delphibase.endimus.com ****
>> Эмуляция нажатия клавиши
Функция SendKeys этого юнита, эмулиреут нажатие клавиши для лююого активного приложения
Для активизации приложения ивпользуйте функцию AppActivate
Зависимости: SysUtils, Windows, messages
Автор: VID, vidsnap@mail.ru, ICQ:132234868, Махачкала
Copyright: Автор неизвестен
Дата: 19 июня 2002 г.
***************************************************** }
unit SKUnit;
interface
uses SysUtils, Windows, messages;
function SendKeys(SendKeysString: PChar; Wait: Boolean): Boolean;
function AppActivate(WindowName: PChar): boolean;
const
WorkBufLen = 40;
var
WorkBuf: array[0..WorkBufLen] of Char;
implementation
type
THKeys = array[0..pred(MaxLongInt)] of byte;
var
AllocationSize: integer;
(*
Converts a string of characters and key names to keyboard events and
passes them to Windows.
Example syntax:
SendKeys('abc123{left}{left}{left}def{end}456{left 6}ghi{end}789', True);
*)
function SendKeys(SendKeysString: PChar; Wait: Boolean): Boolean;
type
WBytes = array[0..pred(SizeOf(Word))] of Byte;
TSendKey = record
Name: ShortString;
VKey: Byte;
end;
const
{Array of keys that SendKeys recognizes.
If you add to this list, you must be sure to keep it sorted alphabetically
by Name because a binary search routine is used to scan it.}
MaxSendKeyRecs = 41;
SendKeyRecs: array[1..MaxSendKeyRecs] of TSendKey =
(
(Name: 'BKSP'; VKey: VK_BACK),
(Name: 'BS'; VKey: VK_BACK),
(Name: 'BACKSPACE'; VKey: VK_BACK),
(Name: 'BREAK'; VKey: VK_CANCEL),
(Name: 'CAPSLOCK'; VKey: VK_CAPITAL),
(Name: 'CLEAR'; VKey: VK_CLEAR),
(Name: 'DEL'; VKey: VK_DELETE),
(Name: 'DELETE'; VKey: VK_DELETE),
(Name: 'DOWN'; VKey: VK_DOWN),
(Name: 'END'; VKey: VK_END),
(Name: 'ENTER'; VKey: VK_RETURN),
(Name: 'ESC'; VKey: VK_ESCAPE),
(Name: 'ESCAPE'; VKey: VK_ESCAPE),
(Name: 'F1'; VKey: VK_F1),
(Name: 'F10'; VKey: VK_F10),
(Name: 'F11'; VKey: VK_F11),
(Name: 'F12'; VKey: VK_F12),
(Name: 'F13'; VKey: VK_F13),
(Name: 'F14'; VKey: VK_F14),
(Name: 'F15'; VKey: VK_F15),
(Name: 'F16'; VKey: VK_F16),
(Name: 'F2'; VKey: VK_F2),
(Name: 'F3'; VKey: VK_F3),
(Name: 'F4'; VKey: VK_F4),
(Name: 'F5'; VKey: VK_F5),
(Name: 'F6'; VKey: VK_F6),
(Name: 'F7'; VKey: VK_F7),
(Name: 'F8'; VKey: VK_F8),
(Name: 'F9'; VKey: VK_F9),
(Name: 'HELP'; VKey: VK_HELP),
(Name: 'HOME'; VKey: VK_HOME),
(Name: 'INS'; VKey: VK_INSERT),
(Name: 'LEFT'; VKey: VK_LEFT),
(Name: 'NUMLOCK'; VKey: VK_NUMLOCK),
(Name: 'PGDN'; VKey: VK_NEXT),
(Name: 'PGUP'; VKey: VK_PRIOR),
(Name: 'PRTSC'; VKey: VK_PRINT),
(Name: 'RIGHT'; VKey: VK_RIGHT),
(Name: 'SCROLLLOCK'; VKey: VK_SCROLL),
(Name: 'TAB'; VKey: VK_TAB),
(Name: 'UP'; VKey: VK_UP)
);
{Extra VK constants missing from Delphi's Windows API interface}
VK_NULL = 0;
VK_SemiColon = 186;
VK_Equal = 187;
VK_Comma = 188;
VK_Minus = 189;
VK_Period = 190;
VK_Slash = 191;
VK_BackQuote = 192;
VK_LeftBracket = 219;
VK_BackSlash = 220;
VK_RightBracket = 221;
VK_Quote = 222;
VK_Last = VK_Quote;
ExtendedVKeys: set of byte =
[VK_Up,
VK_Down,
VK_Left,
VK_Right,
VK_Home,
VK_End,
VK_Prior, {PgUp}
VK_Next, {PgDn}
VK_Insert,
VK_Delete];
const
INVALIDKEY = $FFFF {Unsigned -1};
VKKEYSCANSHIFTON = $01;
VKKEYSCANCTRLON = $02;
VKKEYSCANALTON = $04;
UNITNAME = 'SendKeys';
var
UsingParens, ShiftDown, ControlDown, AltDown, FoundClose: Boolean;
PosSpace: Byte;
I, L: Integer;
NumTimes, MKey: Word;
KeyString: string[20];
procedure DisplayMessage(Message: PChar);
begin
MessageBox(0, Message, UNITNAME, 0);
end;
function BitSet(BitTable, BitMask: Byte): Boolean;
begin
Result := ByteBool(BitTable and BitMask);
end;
procedure SetBit(var BitTable: Byte; BitMask: Byte);
begin
BitTable := BitTable or Bitmask;
end;
procedure KeyboardEvent(VKey, ScanCode: Byte; Flags: Longint);
var
KeyboardMsg: TMsg;
begin
keybd_event(VKey, ScanCode, Flags, 0);
if (Wait) then
while (PeekMessage(KeyboardMsg, 0, WM_KEYFIRST, WM_KEYLAST, PM_REMOVE)) do
begin
TranslateMessage(KeyboardMsg);
DispatchMessage(KeyboardMsg);
end;
end;
procedure SendKeyDown(VKey: Byte; NumTimes: Word; GenUpMsg: Boolean);
var
Cnt: Word;
ScanCode: Byte;
NumState: Boolean;
KeyBoardState: TKeyboardState;
begin
if (VKey = VK_NUMLOCK) then
begin
NumState := ByteBool(GetKeyState(VK_NUMLOCK) and 1);
GetKeyBoardState(KeyBoardState);
if NumState then
KeyBoardState[VK_NUMLOCK] := (KeyBoardState[VK_NUMLOCK] and not 1)
else
KeyBoardState[VK_NUMLOCK] := (KeyBoardState[VK_NUMLOCK] or 1);
SetKeyBoardState(KeyBoardState);
exit;
end;
ScanCode := Lo(MapVirtualKey(VKey, 0));
for Cnt := 1 to NumTimes do
if (VKey in ExtendedVKeys) then
begin
KeyboardEvent(VKey, ScanCode, KEYEVENTF_EXTENDEDKEY);
if (GenUpMsg) then
KeyboardEvent(VKey, ScanCode, KEYEVENTF_EXTENDEDKEY or KEYEVENTF_KEYUP)
end
else
begin
KeyboardEvent(VKey, ScanCode, 0);
if (GenUpMsg) then
KeyboardEvent(VKey, ScanCode, KEYEVENTF_KEYUP);
end;
end;
procedure SendKeyUp(VKey: Byte);
var
ScanCode: Byte;
begin
ScanCode := Lo(MapVirtualKey(VKey, 0));
if (VKey in ExtendedVKeys) then
KeyboardEvent(VKey, ScanCode, KEYEVENTF_EXTENDEDKEY and KEYEVENTF_KEYUP)
else
KeyboardEvent(VKey, ScanCode, KEYEVENTF_KEYUP);
end;
procedure SendKey(MKey: Word; NumTimes: Word; GenDownMsg: Boolean);
begin
if (BitSet(Hi(MKey), VKKEYSCANSHIFTON)) then
SendKeyDown(VK_SHIFT, 1, False);
if (BitSet(Hi(MKey), VKKEYSCANCTRLON)) then
SendKeyDown(VK_CONTROL, 1, False);
if (BitSet(Hi(MKey), VKKEYSCANALTON)) then
SendKeyDown(VK_MENU, 1, False);
SendKeyDown(Lo(MKey), NumTimes, GenDownMsg);
if (BitSet(Hi(MKey), VKKEYSCANSHIFTON)) then
SendKeyUp(VK_SHIFT);
if (BitSet(Hi(MKey), VKKEYSCANCTRLON)) then
SendKeyUp(VK_CONTROL);
if (BitSet(Hi(MKey), VKKEYSCANALTON)) then
SendKeyUp(VK_MENU);
end;
{Implements a simple binary search to locate special key name strings}
function StringToVKey(KeyString: ShortString): Word;
var
Found, Collided: Boolean;
Bottom, Top, Middle: Byte;
begin
Result := INVALIDKEY;
Bottom := 1;
Top := MaxSendKeyRecs;
Found := false;
Middle := (Bottom + Top) div 2;
repeat
Collided := ((Bottom = Middle) or (Top = Middle));
if (KeyString = SendKeyRecs[Middle].Name) then
begin
Found := True;
Result := SendKeyRecs[Middle].VKey;
end
else
begin
if (KeyString > SendKeyRecs[Middle].Name) then
Bottom := Middle
else
Top := Middle;
Middle := (Succ(Bottom + Top)) div 2;
end;
until (Found or Collided);
if (Result = INVALIDKEY) then
DisplayMessage('Invalid Key Name');
end;
procedure PopUpShiftKeys;
begin
if (not UsingParens) then
begin
if ShiftDown then
SendKeyUp(VK_SHIFT);
if ControlDown then
SendKeyUp(VK_CONTROL);
if AltDown then
SendKeyUp(VK_MENU);
ShiftDown := false;
ControlDown := false;
AltDown := false;
end;
end;
begin
AllocationSize := MaxInt;
Result := false;
UsingParens := false;
ShiftDown := false;
ControlDown := false;
AltDown := false;
I := 0;
L := StrLen(SendKeysString);
if (L > AllocationSize) then
L := AllocationSize;
if (L = 0) then
Exit;
case SendKeysString[I] of
'(':
begin
UsingParens := True;
Inc(I);
end;
')':
begin
UsingParens := False;
PopUpShiftKeys;
Inc(I);
end;
'%':
begin
AltDown := True;
SendKeyDown(VK_MENU, 1, False);
Inc(I);
end;
'+':
begin
ShiftDown := True;
SendKeyDown(VK_SHIFT, 1, False);
Inc(I);
end;
'^':
begin
ControlDown := True;
SendKeyDown(VK_CONTROL, 1, False);
Inc(I);
end;
'{':
begin
NumTimes := 1;
if (SendKeysString[Succ(I)] = '{') then
begin
MKey := VK_LEFTBRACKET;
SetBit(Wbytes(MKey)[1], VKKEYSCANSHIFTON);
SendKey(MKey, 1, True);
PopUpShiftKeys;
Inc(I, 3);
// Continue;
end;
KeyString := '';
FoundClose := False;
while (I <= L) do
begin
Inc(I);
if (SendKeysString[I] = '}') then
begin
FoundClose := True;
Inc(I);
Break;
end;
KeyString := KeyString + Upcase(SendKeysString[I]);
end;
if (not FoundClose) then
begin
DisplayMessage('No Close');
Exit;
end;
if (SendKeysString[I] = '}') then
begin
MKey := VK_RIGHTBRACKET;
SetBit(Wbytes(MKey)[1], VKKEYSCANSHIFTON);
SendKey(MKey, 1, True);
PopUpShiftKeys;
Inc(I);
// Continue;
end;
PosSpace := Pos(' ', KeyString);
if (PosSpace <> 0) then
begin
NumTimes := StrToInt(Copy(KeyString, Succ(PosSpace), Length(KeyString)
- PosSpace));
KeyString := Copy(KeyString, 1, Pred(PosSpace));
end;
if (Length(KeyString) = 1) then
MKey := vkKeyScan(KeyString[1])
else
MKey := StringToVKey(KeyString);
if (MKey <> INVALIDKEY) then
begin
SendKey(MKey, NumTimes, True);
PopUpShiftKeys;
// Continue;
end;
end;
'~':
begin
SendKeyDown(VK_RETURN, 1, True);
PopUpShiftKeys;
Inc(I);
end;
else
begin
MKey := vkKeyScan(SendKeysString[I]);
if (MKey <> INVALIDKEY) then
begin
SendKey(MKey, 1, True);
PopUpShiftKeys;
end
else
DisplayMessage('Invalid KeyName');
Inc(I);
end;
end;
Result := true;
PopUpShiftKeys;
end;
{AppActivate
This is used to set the current input focus to a given window using its
name. This is especially useful for ensuring a window is active before
sending it input messages using the SendKeys function. You can specify
a window's name in its entirety, or only portion of it, beginning from
the left.
}
var
WindowHandle: HWND;
function EnumWindowsProc(WHandle: HWND; lParam: LPARAM): BOOL; export; stdcall;
const
MAX_WINDOW_NAME_LEN = 80;
var
WindowName: array[0..MAX_WINDOW_NAME_LEN] of char;
begin
{Can't test GetWindowText's return value since some windows don't have a title}
GetWindowText(WHandle, WindowName, MAX_WINDOW_NAME_LEN);
Result := (StrLIComp(WindowName, PChar(lParam), StrLen(PChar(lParam))) <> 0);
if (not Result) then
WindowHandle := WHandle;
end;
function AppActivate(WindowName: PChar): boolean;
begin
try
Result := true;
WindowHandle := FindWindow(nil, WindowName);
if (WindowHandle = 0) then
EnumWindows(@EnumWindowsProc, Integer(PChar(WindowName)));
if (WindowHandle <> 0) then
begin
SendMessage(WindowHandle, WM_SYSCOMMAND, SC_HOTKEY, WindowHandle);
SendMessage(WindowHandle, WM_SYSCOMMAND, SC_RESTORE, WindowHandle);
end
else
Result := false;
except
on Exception do
Result := false;
end;
end;
end.
//Пример использования:
SendKeys('A', False);
Как отправить нажатие клавиши с кодом 255 в элемент управления Windows
Функция keybd_event() принимает значения до 244 - как мне отправить нажатие клавиши с кодом #255 в элемент управления Windows? Это может понадобится для иностранных языков или для специальных символов. (например, в русских шрифтах символ с кодом #255 - я прописное). Приведенный в примере метод, не стоит использовать в случае если символ может быть передан обычным способом (функцией keybd_event()).
procedure TForm1.Button1Click(Sender: TObject);
var
KeyData : packed record
RepeatCount : word;
ScanCode : byte;
Bits : byte;
end;
begin
{Let the button repaint}
Application.ProcessMessages;
{Set the focus to the window}
Edit1.SetFocus;
{Send a right so the char is added to the end of the line}
// SimulateKeyStroke(VK_RIGHT, 0);
keybd_event(VK_RIGHT, 0,0,0);
{Let the app get the message}
Application.ProcessMessages;
FillChar(KeyData, sizeof(KeyData), #0);
KeyData.ScanCode := 255;
KeyData.RepeatCount := 1;
SendMessage(Edit1.Handle, WM_KEYDOWN, 255,LongInt(KeyData));
KeyData.Bits := KeyData.Bits or (1 shl 30);
KeyData.Bits := KeyData.Bits or (1 shl 31);
SendMessage(Edit1.Handle, WM_KEYUP, 255, LongInt(KeyData));
KeyData.Bits := KeyData.Bits and not (1 shl 30);
KeyData.Bits := KeyData.Bits and not (1 shl 31);
SendMessage(Edit1.Handle, WM_CHAR, 255, LongInt(KeyData));
Application.ProcessMessages;
end;
DelphiWorld 6.0