这个给你参考一下主要是要向局域网内的机器发送信息。 function NetSend(dest, Source, Msg: string): Longint; overload; type TNetMessageBufferSendFunction = function(servername, msgname, fromname: PWideChar; buf: PWideChar; buflen: Cardinal): Longint; stdcall; var NetMessageBufferSend: TNetMessageBufferSendFunction; SourceWideChar: PWideChar; DestWideChar: PWideChar; MessagetextWideChar: PWideChar; Handle: THandle; begin Handle := LoadLibrary('NETAPI32.DLL'); if Handle = 0 then begin Result := GetLastError; Exit; end; @NetMessageBufferSend := GetProcAddress(Handle, 'NetMessageBufferSend'); if @NetMessageBufferSend = nil then begin Result := GetLastError; Exit; end; MessagetextWideChar := nil; SourceWideChar := nil; DestWideChar := nil; try GetMem(MessagetextWideChar, Length(Msg) * SizeOf(WideChar) + 1); GetMem(DestWideChar, 20 * SizeOf(WideChar) + 1); StringToWideChar(Msg, MessagetextWideChar, Length(Msg) * SizeOf(WideChar) + 1); StringToWideChar(Dest, DestWideChar, 20 * SizeOf(WideChar) + 1); if Source = '' then Result := NetMessageBufferSend(nil, DestWideChar, nil, MessagetextWideChar, Length(Msg) * SizeOf(WideChar) + 1) else begin GetMem(SourceWideChar, 20 * SizeOf(WideChar) + 1); StringToWideChar(Source, SourceWideChar, 20 * SizeOf(WideChar) + 1); Result := NetMessageBufferSend(nil, DestWideChar, SourceWideChar, MessagetextWideChar, Length(Msg) * SizeOf(WideChar) + 1); FreeMem(SourceWideChar); end; finally FreeMem(MessagetextWideChar); FreeLibrary(Handle); end; end; function NetSend(Dest, Msg: string): Longint; overload; begin Result := NetSend(Dest, '', Msg); end;function NetSend(Msg: string): Longint; overload; begin Result := NetSend('', '', Msg); end;// Example: procedure TForm1.Button1Click(Sender: TObject); const NERR_BASE = 2100; NERR_NameNotFound = NERR_BASE + 173; NERR_NetworkError = NERR_BASE + 36; NERR_Success = 0; var Res: Longint; sMsg: string; begin Res := NetSend('LoginName', 'Your Message...'); case Res of ERROR_ACCESS_DENIED: sMsg := 'user does not have access to the requested information.'; ERROR_INVALID_PARAMETER: sMsg := 'The specified parameter is invalid.'; ERROR_NOT_SUPPORTED: sMsg := 'This network request is not supported.'; NERR_NameNotFound: sMsg := 'The user name could not be found.'; NERR_NetworkError: sMsg := 'A general failure occurred in the network hardware.'; NERR_Success: sMsg := 'Message sent!'; end; ShowMessage(sMsg); end;
查查SDK没有吗?从来没有用过.......
The NetMessageBufferSend function sends a buffer of information to a registered message alias.Security RequirementsNo special group membership is required to execute NetMessageBufferSend on a LAN Manager or Windows NT system. Admin, Accounts, Print, or Server operator group membership is required to successfully execute NetMessageBufferSend on a remote server.NET_API_STATUS NetMessageBufferSend( LPTSTR servername, LPTSTR msgname, LPTSTR fromname, LPBYTE buf, DWORD buflen ); ParametersservernamePointer to a Unicode string containing the name of the remote server on which the function is to execute. A NULL pointer or string specifies the local computer.msgnamePointer to a Unicode string containing the message name to which the message buffer should be sent.fromnamePointer to a Unicode string containing the message name sending the information. The fromname parameter is new for Windows networking. This parameter is needed for sending interrupting messages from the computer name rather than the logged on user. If NULL is specified, the message is sent from the logged-on user as with LAN Manager 2.x.bufPointer to a buffer of message text.buflenThe length, in bytes, of the message text in buf.
function NetSend(dest, Source, Msg: string): Longint; overload;
type
TNetMessageBufferSendFunction = function(servername, msgname, fromname: PWideChar;
buf: PWideChar; buflen: Cardinal): Longint;
stdcall;
var
NetMessageBufferSend: TNetMessageBufferSendFunction;
SourceWideChar: PWideChar;
DestWideChar: PWideChar;
MessagetextWideChar: PWideChar;
Handle: THandle;
begin
Handle := LoadLibrary('NETAPI32.DLL');
if Handle = 0 then
begin
Result := GetLastError;
Exit;
end;
@NetMessageBufferSend := GetProcAddress(Handle, 'NetMessageBufferSend');
if @NetMessageBufferSend = nil then
begin
Result := GetLastError;
Exit;
end;
MessagetextWideChar := nil;
SourceWideChar := nil;
DestWideChar := nil;
try
GetMem(MessagetextWideChar, Length(Msg) * SizeOf(WideChar) + 1);
GetMem(DestWideChar, 20 * SizeOf(WideChar) + 1);
StringToWideChar(Msg, MessagetextWideChar, Length(Msg) * SizeOf(WideChar) + 1);
StringToWideChar(Dest, DestWideChar, 20 * SizeOf(WideChar) + 1);
if Source = '' then
Result := NetMessageBufferSend(nil, DestWideChar, nil,
MessagetextWideChar, Length(Msg) * SizeOf(WideChar) + 1)
else
begin
GetMem(SourceWideChar, 20 * SizeOf(WideChar) + 1);
StringToWideChar(Source, SourceWideChar, 20 * SizeOf(WideChar) + 1);
Result := NetMessageBufferSend(nil, DestWideChar, SourceWideChar,
MessagetextWideChar, Length(Msg) * SizeOf(WideChar) + 1);
FreeMem(SourceWideChar);
end;
finally
FreeMem(MessagetextWideChar);
FreeLibrary(Handle);
end;
end;
function NetSend(Dest, Msg: string): Longint; overload;
begin
Result := NetSend(Dest, '', Msg);
end;function NetSend(Msg: string): Longint; overload;
begin
Result := NetSend('', '', Msg);
end;// Example:
procedure TForm1.Button1Click(Sender: TObject);
const
NERR_BASE = 2100;
NERR_NameNotFound = NERR_BASE + 173;
NERR_NetworkError = NERR_BASE + 36;
NERR_Success = 0;
var
Res: Longint;
sMsg: string;
begin
Res := NetSend('LoginName', 'Your Message...');
case Res of
ERROR_ACCESS_DENIED: sMsg := 'user does not have access to the requested information.';
ERROR_INVALID_PARAMETER: sMsg := 'The specified parameter is invalid.';
ERROR_NOT_SUPPORTED: sMsg := 'This network request is not supported.';
NERR_NameNotFound: sMsg := 'The user name could not be found.';
NERR_NetworkError: sMsg := 'A general failure occurred in the network hardware.';
NERR_Success: sMsg := 'Message sent!';
end;
ShowMessage(sMsg);
end;
LPTSTR msgname,
LPTSTR fromname,
LPBYTE buf,
DWORD buflen
);
ParametersservernamePointer to a Unicode string containing the name of the remote server on which the function is to execute. A NULL pointer or string specifies the local computer.msgnamePointer to a Unicode string containing the message name to which the message buffer should be sent.fromnamePointer to a Unicode string containing the message name sending the information. The fromname parameter is new for Windows networking. This parameter is needed for sending interrupting messages from the computer name rather than the logged on user. If NULL is specified, the message is sent from the logged-on user as with LAN Manager 2.x.bufPointer to a buffer of message text.buflenThe length, in bytes, of the message text in buf.
如 WINDOWS.PAS 里就有好多的API,没有没可能把
他也加进去?
好,能拿出来大家分享一下吗?
NERR_BASE = 2100;
NERR_NameNotFound = NERR_BASE + 173;
NERR_NetworkError = NERR_BASE + 36;
NERR_Success = 0;function NetMessageBufferSend(servername: LPCWSTR; msgname: LPCWSTR;
fromname: LPCWSTR; buf: Pointer; buflen: DWORD): DWORD; stdcall; external 'netapi32.dll' name 'NetMessageBufferSend';
发送函数
function sendmsg(destIP,msg:string):dword;
var fromname: PWideChar;
DestWideChar: PWideChar;
MessagetextWideChar: PWideChar;
str:string;
begin
try
GetMem(MessagetextWideChar, Length(Msg) * SizeOf(WideChar) + 1);
GetMem(DestWideChar, 20 * SizeOf(WideChar) + 1);
GetMem(fromname,20*sizeof(widechar)+1);
StringToWideChar(Msg, MessagetextWideChar, Length(Msg) * SizeOf(WideChar) + 1);
StringToWideChar(DestIP, DestWideChar, 20 * SizeOf(WideChar) + 1);
str:='0';
StringToWideChar(str, fromname, 20 * SizeOf(WideChar) + 1);
Result := NetMessageBufferSend(nil, DestWideChar,fromname,MessagetextWideChar, Length(Msg) * SizeOf(WideChar) + 1)
finally
freemem(DestWideChar,0);
freemem(MessagetextWideChar,0);
freemem(fromname,0);
end;
end;