谁有让程序模拟键盘按键的代码啊..谢了..

[紫色田园]

谁有让程序模拟键盘按键的代码啊..谢了..

[jinjazz]

你转到技术区我就给你

[紫色田园]

to jinjazz
俺转了...

[jinjazz]

//单元功能：提供模拟键盘操作函数
//函数说明：Function Sendkeys('xxxx...'):TSendKeyError; 发送按键
// WaitForHook('等待..');
//返 回 值：sk_None-函数调用成功
// sk_FailSetHook-无法设置挂钩
// sk_InvalidToken-字符串非法字符
// sk_UnknownError-未知错误
// sk_AlreadyPlaying-挂钩已经激活，击键正在回放
//宏 定 义：模拟功能键
//单元出处：<<Delphi5开发人员指南>> Ch13

unit SendKey;

interface

uses
SysUtils, Windows, Messages, Classes, KeyDefs;

type
{ Error codes }
TSendKeyError = (sk_None, sk_FailSetHook, sk_InvalidToken,
sk_UnknownError, sk_AlreadyPlaying);
{ first vk code to last vk code }
TvkKeySet = set of vk_LButton..vk_Scroll;

{ exceptions }
ESendKeyError = class(Exception);
ESKSetHookError = class(ESendKeyError);
ESKInvalidToken = class(ESendKeyError);
ESKAlreadyPlaying = class(ESendKeyError);
const
MaxKeys = 24;
ControlKey = '^';
AltKey = '@';
ShiftKey = '~';
KeyGroupOpen = '{';
KeyGroupClose = '}';
KeyDefArray : array[1..MaxKeys] of TKeyDef = (
(Key: 'F1'; vkCode: vk_F1),
(Key: 'F2'; vkCode: vk_F2),
(Key: 'F3'; vkCode: vk_F3),
(Key: 'F4'; vkCode: vk_F4),
(Key: 'F5'; vkCode: vk_F5),
(Key: 'F6'; vkCode: vk_F6),
(Key: 'F7'; vkCode: vk_F7),
(Key: 'F8'; vkCode: vk_F8),
(Key: 'F9'; vkCode: vk_F9),
(Key: 'F10'; vkCode: vk_F10),
(Key: 'F11'; vkCode: vk_F11),
(Key: 'F12'; vkCode: vk_F12),
(Key: 'INSERT'; vkCode: vk_Insert),
(Key: 'DELETE'; vkCode: vk_Delete),
(Key: 'HOME'; vkCode: vk_Home),
(Key: 'END'; vkCode: vk_End),
(Key: 'PGUP'; vkCode: vk_Prior),
(Key: 'PGDN'; vkCode: vk_Next),
(Key: 'TAB'; vkCode: vk_Tab),
(Key: 'ENTER'; vkCode: vk_Return),
(Key: 'BKSP'; vkCode: vk_Back),
(Key: 'PRTSC'; vkCode: vk_SnapShot),
(Key: 'SHIFT'; vkCode: vk_Shift),
(Key: 'ESCAPE'; vkCode: vk_Escape));
function SendKeys(S: String): TSendKeyError;
procedure WaitForHook;
procedure StopPlayback;

var
Playing: Boolean;

implementation

uses Forms;

type
{ a TList descendant that know how to dispose of its contents }
TMessageList = class(TList)
public
destructor Destroy; override;
end;

const
{ valid "sys" keys }
vkKeySet: TvkKeySet = [Ord('A')..Ord('Z'), vk_Menu, vk_F1..vk_F12];

destructor TMessageList.Destroy;
var
i: longint;
begin
{ deallocate all the message records before discarding the list }
for i := 0 to Count - 1 do
Dispose(PEventMsg(Items[i]));
inherited Destroy;
end;

var
{ variables global to the DLL }
MsgCount: word = 0;
MessageBuffer: TEventMsg;
HookHandle: hHook = 0;
MessageList: TMessageList = Nil;
AltPressed, ControlPressed, ShiftPressed: Boolean;

procedure StopPlayback;
{ Unhook the hook, and clean up }
begin
{ if Hook is currently active, then unplug it }
if Playing then
UnhookWindowsHookEx(HookHandle);
MessageList.Free;
Playing := False;
end;

function Play(Code: integer; wParam, lParam: Longint): Longint; stdcall;
{ This is the JournalPlayback callback function. It is called by }
{ Windows when Windows polls for hardware events. The code parameter }
{ indicates what to do. }
begin
case Code of
HC_SKIP:
{ HC_SKIP means to pull the next message out of our list. If we }
{ are at the end of the list, it's okay to unhook the }
{ JournalPlayback hook from here. }
begin
{ increment message counter }
inc(MsgCount);
{ check to see if all messages have been played }
if MsgCount >= MessageList.Count then StopPlayback
{ otherwise copy next message from list into buffer }
else MessageBuffer := TEventMsg(MessageList.Items[MsgCount]^);
Result := 0;
end;
HC_GETNEXT:
{ HC_GETNEXT means to fill the wParam and lParam with the proper }
{ values so that the message can be played back. DO NOT unhook }
{ hook from within here. Return value indicates how much time }
{ until Windows should playback message. We'll return 0 so that }
{ it is processed right away. }
begin
{ move message in buffer to message queue }
PEventMsg(lParam)^ := MessageBuffer;
Result := 0 { process immediately }
end
else
{ if Code isn't HC_SKIP or HC_GETNEXT, call next hook in chain }
Result := CallNextHookEx(HookHandle, Code, wParam, lParam);
end;
end;

procedure StartPlayback;
{ Initializes globals and sets the hook }
begin
{ grab first message from list and place in buffer in case we }
{ get a hc_GetNext before and hc_Skip }
MessageBuffer := TEventMsg(MessageList.Items[0]^);
{ initialize message count and play indicator }
MsgCount := 0;
{ initialize Alt, Control, and Shift key flags }
AltPressed := False;
ControlPressed := False;
ShiftPressed := False;
{ set the hook! }
HookHandle := SetWindowsHookEx(wh_JournalPlayback, Play, hInstance, 0);
if HookHandle = 0 then
raise ESKSetHookError.Create('Failed to set hook');
Playing := True;
end;

procedure MakeMessage(vKey: byte; M: Cardinal);
{ procedure builds a TEventMsg record that emulates a keystroke and }
{ adds it to message list }
var
E: PEventMsg;
begin
New(E); // allocate a message record
with E^ do
begin
message := M; // set message field
paramL := vKey; // vk code in ParamL
paramH := MapVirtualKey(vKey, 0); // scan code in ParamH
time := GetTickCount; // set time
hwnd := 0; // ignored
end;
MessageList.Add(E);
end;

procedure KeyDown(vKey: byte);
{ Generates KeyDownMessage }
begin
{ don't generate a "sys" key if the control key is pressed }
{ (This is a Windows quirk) }
if AltPressed and (not ControlPressed) and (vKey in vkKeySet) then
MakeMessage(vKey, wm_SysKeyDown)
else
MakeMessage(vKey, wm_KeyDown);
end;

procedure KeyUp(vKey: byte);
{ Generates KeyUp message }
begin
{ don't generate a "sys" key if the control key is pressed }
{ (This is a Windows quirk) }
if AltPressed and (not ControlPressed) and (vKey in vkKeySet) then
MakeMessage(vKey, wm_SysKeyUp)
else
MakeMessage(vKey, wm_KeyUp);
end;

[jinjazz]

procedure SimKeyPresses(VKeyCode: Word);
{ This function simulates keypresses for the given key, taking into }
{ account the current state of Alt, Control, and Shift keys }
begin
{ press Alt key if flag has been set }
if AltPressed then
KeyDown(vk_Menu);
{ press Control key if flag has been set }
if ControlPressed then
KeyDown(vk_Control);
{ if shift is pressed, or shifted key and control is not pressed... }
if (((Hi(VKeyCode) and 1) <> 0) and (not ControlPressed)) or
ShiftPressed then
KeyDown(vk_Shift); { ...press shift }
KeyDown(Lo(VKeyCode)); { press key down }
KeyUp(Lo(VKeyCode)); { release key }
{ if shift is pressed, or shifted key and control is not pressed... }
if (((Hi(VKeyCode) and 1) <> 0) and (not ControlPressed)) or
ShiftPressed then
KeyUp(vk_Shift); { ...release shift }
{ if shift flag is set, reset flag }
if ShiftPressed then begin
ShiftPressed := False;
end;
{ Release Control key if flag has been set, reset flag }
if ControlPressed then begin
KeyUp(vk_Control);
ControlPressed := False;
end;
{ Release Alt key if flag has been set, reset flag }
if AltPressed then begin
KeyUp(vk_Menu);
AltPressed := False;
end;
end;

procedure ProcessKey(S: String);
{ This function parses each character in the string to create the }
{ message list }
var
KeyCode: word;
Key: byte;
index: integer;
Token: TKeyString;
begin
index := 1;
repeat
case S[index] of
KeyGroupOpen:
{ It's the beginning of a special token! }
begin
Token := '';
inc(index);
while S[index] <> KeyGroupClose do begin
{ add to Token until the end token symbol is encountered }
Token := Token + S[index];
inc(index);
{ check to make sure the token's not too long }
if (Length(Token) = 7) and (S[index] <> KeyGroupClose) then
raise ESKInvalidToken.Create('No closing brace');
end;
{ look for token in array, Key parameter will }
{ contain vk code if successful }
if not FindKeyInArray(Token, Key) then
raise ESKInvalidToken.Create('Invalid token');
{ simulate keypress sequence }
SimKeyPresses(MakeWord(Key, 0));
end;
AltKey: AltPressed := True; // set Alt flag
ControlKey: ControlPressed := True; // set Control flag
ShiftKey: ShiftPressed := True; // set Shift flag
else begin
{ A normal character was pressed }
{ convert character into a word where the high byte contains }
{ the shift state and the low byte contains the vk code }
KeyCode := vkKeyScan(S[index]);
{ simulate keypress sequence }
SimKeyPresses(KeyCode);
end;
end;
Inc(index);
until index > Length(S);
end;

procedure WaitForHook;
begin
repeat Application.ProcessMessages until not Playing;
end;

function SendKeys(S: String): TSendKeyError;
{ This is the one entry point. Based on the string passed in the S }
{ parameter, this function creates a list of keyup/keydown messages, }
{ sets a JournalPlayback hook, and replays the keystroke messages. }
begin
Result := sk_None; // assume success
try
if Playing then raise ESKAlreadyPlaying.Create('');
MessageList := TMessageList.Create; // create list of messages
ProcessKey(S); // create messages from string
StartPlayback; // set hook and play back messages
except
{ if an exception occurs, return an error code, and clean up }
on E:ESendKeyError do
begin
MessageList.Free;
if E is ESKSetHookError then
Result := sk_FailSetHook
else if E is ESKInvalidToken then
Result := sk_InvalidToken
else if E is ESKAlreadyPlaying then
Result := sk_AlreadyPlaying;
end
else
Result := sk_UnknownError; // Catch-all exception handler
end;
end;

end.


==================保存一个单元--加入到工程

调用：

procedure TForm1.BitBtn1Click(Sender: TObject);
begin
memo1.SetFocus;
waitforhook;
sendkeys('fasdf');
end;

[adus2006]

procedure tform1.memo1click(sender:tobject);
begin
keybd_event(vk_control,mapvirtualkey(vk_control,0),0,0);
keybd_event(ord('v'),mapvirtualkey(ord('v'),0),0,0);
keybd_event(ord('v'),mapvirtualkey(ord('v'),0),keyeventf_keyup,0);
keybd_event(vk_control,mapvirtualkey(vk_control,0),keyeventf_keyup,0) ;
end;

[lw549]

procedure SimulateKey(Keys: String);
//Simulate some Keys typed
//Copy Right ffjn@17:41 2003-9-8
var
key: Char;
V, H, L, i: Integer;
Const Shift: array[0..2] of byte = (VK_SHIFT, VK_CONTROL, VK_MENU);
begin
for i:= 1 to Length(Keys) do begin
Key:= Keys[i];
V:= VkKeyScan(Key);
if V > 255 then (*包含特殊键*)
begin
L:= v and 255;
H:= v shr 9;
keybd_event(Shift[H], 0, 0, 0);
keybd_event(L, 0, 0, 0);
keybd_event(L, 0, KEYEVENTF_KEYUP , 0);
keybd_event(Shift[H], 0, KEYEVENTF_KEYUP , 0);
end
else begin
keybd_event(V, 0, 0, 0);
keybd_event(V, 0, KEYEVENTF_KEYUP, 0);
end;
end;
end;

[jishiping]

楼上的太复杂了吧。API函数 keybd_event 用来模拟键盘按键。
keybd_event(VK_SHIFT, 0, 0, 0); //模拟按下Shift键
keybd_event(VK_SHIFT, 0, KEYEVENTF_KEYUP, 0); //模拟松开Shift键

对于其它的按键，将上面的第一个参数换掉就可以了。

[wangnan0728]

系统里有一EXE文件，是个键盘具体文件名忘了，里面有key三个字母