用下面贴的SendKeys函数,比较长,分两贴。 以Word为例, procedure TForm1.Button1Click(Sender: TObject); var h: HWND; begin h := FindWindow(nil, 'Microsoft Word'); if h > 0 then begin SetForegroundWindow(h); //发送按键:Alt+F,O,输入d:\z.doc,Alt+O打开 SendKeys('%fod:\z.doc%o', True); end; end; (* 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]; AllocationSize: Integer;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;
接上贴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 (I<L) do begin 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;
本程序用了3个BITBTN和2个EDIT,可以启动计算器,调用计算器菜单命令。 其中: BITBTN1调用计算器,根据系统不同计算器路径可能不同,请自行修改。本系统为2000 BITBTN2关闭计算器。 BITBTN3根据EDIT内容调用计算器菜单命令。 本程序没有错误处理,不要在在EDIT内输入文字。 procedure TForm1.BitBtn1Click(Sender: TObject); var dir: string; begin dir:='C:\WINNT\System32';//被调用程序的目录 SetCurrentDir(dir); WinExec('calc.exe',SW_SHOW);//调用被调用程序 end;procedure TForm1.BitBtn2Click(Sender: TObject); var hWnd1: HWND ; begin hWnd1 := FindWindow(NiL,'计算器'); SendMessage(hWnd1,WM_CLOSE,0,0); end;procedure TForm1.BitBtn3Click(Sender: TObject); var a,b: integer; HWND1 : hWnd ; HMENU1 : HMENU ; id: UINT ; begin a:=StrToInt(Edit1.Text); b:=StrToInt(Edit2.Text); HWND1:= FindWindow(NiL,'计算器'); hMenu1 := GetMenu(hWnd1); //hWnd是一个程序的窗口句柄 hMenu1 := GetSubMenu(hMenu1, a); //取得第二个菜单a=1 ID := GetMenuItemID(hMenu1, b); //取得第二个菜单的第一个菜单项b=0 SendMessage(hWnd1, WM_COMMAND, ID, 0); end;end.
以Word为例,
procedure TForm1.Button1Click(Sender: TObject);
var h: HWND;
begin
h := FindWindow(nil, 'Microsoft Word');
if h > 0 then begin
SetForegroundWindow(h);
//发送按键:Alt+F,O,输入d:\z.doc,Alt+O打开
SendKeys('%fod:\z.doc%o', True);
end;
end;
(*
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];
AllocationSize: Integer;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;
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 (I<L) do begin
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;
其中: BITBTN1调用计算器,根据系统不同计算器路径可能不同,请自行修改。本系统为2000
BITBTN2关闭计算器。
BITBTN3根据EDIT内容调用计算器菜单命令。
本程序没有错误处理,不要在在EDIT内输入文字。
procedure TForm1.BitBtn1Click(Sender: TObject);
var
dir: string;
begin dir:='C:\WINNT\System32';//被调用程序的目录
SetCurrentDir(dir);
WinExec('calc.exe',SW_SHOW);//调用被调用程序
end;procedure TForm1.BitBtn2Click(Sender: TObject);
var
hWnd1: HWND ;
begin hWnd1 := FindWindow(NiL,'计算器');
SendMessage(hWnd1,WM_CLOSE,0,0);
end;procedure TForm1.BitBtn3Click(Sender: TObject);
var a,b: integer;
HWND1 : hWnd ;
HMENU1 : HMENU ;
id: UINT ;
begin a:=StrToInt(Edit1.Text);
b:=StrToInt(Edit2.Text);
HWND1:= FindWindow(NiL,'计算器');
hMenu1 := GetMenu(hWnd1); //hWnd是一个程序的窗口句柄
hMenu1 := GetSubMenu(hMenu1, a); //取得第二个菜单a=1
ID := GetMenuItemID(hMenu1, b); //取得第二个菜单的第一个菜单项b=0
SendMessage(hWnd1, WM_COMMAND, ID, 0);
end;end.