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vfp_roaauto/comun_plugins/utils/wwapi.PRG

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#INCLUDE WCONNECT.H
#DEFINE MAX_INI_BUFFERSIZE 512
#DEFINE MAX_INI_ENUM_BUFFERSIZE 8196
*************************************************************
DEFINE CLASS wwAPI AS Custom
*************************************************************
*** Author: Rick Strahl
*** (c) West Wind Technologies, 1997
*** Contact: (541) 386-2087 / rstrahl@west-wind.com
*** Function: Encapsulates several Windows API functions
*************************************************************
*** Custom Properties
nLastError=0
FUNCTION Init
************************************************************************
* wwAPI :: Init
*********************************
*** Function: DECLARES commonly used DECLAREs so they're not redefined
*** on each call to the methods.
************************************************************************
DECLARE INTEGER GetPrivateProfileString ;
IN WIN32API ;
STRING cSection,;
STRING cEntry,;
STRING cDefault,;
STRING @cRetVal,;
INTEGER nSize,;
STRING cFileName
DECLARE INTEGER GetCurrentThread ;
IN WIN32API
DECLARE INTEGER GetThreadPriority ;
IN WIN32API ;
INTEGER tnThreadHandle
DECLARE INTEGER SetThreadPriority ;
IN WIN32API ;
INTEGER tnThreadHandle,;
INTEGER tnPriority
*** Open Registry Key
DECLARE INTEGER RegOpenKey ;
IN Win32API ;
INTEGER nHKey,;
STRING cSubKey,;
INTEGER @nHandle
*** Create a new Key
DECLARE Integer RegCreateKey ;
IN Win32API ;
INTEGER nHKey,;
STRING cSubKey,;
INTEGER @nHandle
*** Close an open Key
DECLARE Integer RegCloseKey ;
IN Win32API ;
INTEGER nHKey
ENDFUNC
* Init
FUNCTION MessageBeep
************************************************************************
* wwAPI :: MessageBeep
**********************
*** Function: MessageBeep API call runs system sounds
*** Pass: lnSound - Uses FoxPro.h MB_ICONxxxxx values
*** Return: nothing
************************************************************************
LPARAMETERS lnSound
DECLARE INTEGER MessageBeep ;
IN WIN32API AS MsgBeep ;
INTEGER nSound
=MsgBeep(lnSound)
ENDFUNC
* MessageBeep
FUNCTION ReadRegistryString
************************************************************************
* wwAPI :: ReadRegistryString
*********************************
*** Function: Reads a string value from the registry.
*** Pass: tnHKEY - HKEY value (in CGIServ.h)
*** tcSubkey - The Registry subkey value
*** tcEntry - The actual Key to retrieve
*** tlInteger - Optional - Return an DWORD value
*** Return: Registry String or .NULL. on not found
************************************************************************
LPARAMETERS tnHKey, tcSubkey, tcEntry, tlInteger
LOCAL lnRegHandle, lnResult, lnSize, lcDataBuffer, tnType
tnHKey=IIF(vartype(tnHKey)="N",tnHKey,HKEY_LOCAL_MACHINE)
lnRegHandle=0
*** Open the registry key
lnResult=RegOpenKey(tnHKey,tcSubKey,@lnRegHandle)
IF lnResult#ERROR_SUCCESS
*** Not Found
RETURN .NULL.
ENDIF
*** Return buffer to receive value
IF !tlInteger
*** Need to define here specifically for Return Type
*** for lpdData parameter or VFP will choke.
*** Here it's STRING.
DECLARE INTEGER RegQueryValueEx ;
IN Win32API ;
INTEGER nHKey,;
STRING lpszValueName,;
INTEGER dwReserved,;
INTEGER @lpdwType,;
STRING @lpbData,;
INTEGER @lpcbData
lcDataBuffer=space(MAX_INI_BUFFERSIZE)
lnSize=LEN(lcDataBuffer)
lnType=REG_DWORD
lnResult=RegQueryValueEx(lnRegHandle,tcEntry,0,@lnType,;
@lcDataBuffer,@lnSize)
ELSE
*** Need to define here specifically for Return Type
*** for lpdData parameter or VFP will choke.
*** Here's it's an INTEGER
DECLARE INTEGER RegQueryValueEx ;
IN Win32API AS RegQueryInt;
INTEGER nHKey,;
STRING lpszValueName,;
INTEGER dwReserved,;
Integer @lpdwType,;
INTEGER @lpbData,;
INTEGER @lpcbData
lcDataBuffer=0
lnSize=4
lnType=REG_DWORD
lnResult=RegQueryInt(lnRegHandle,tcEntry,0,@lnType,;
@lcDataBuffer,@lnSize)
IF lnResult = ERROR_SUCCESS
RETURN lcDataBuffer
ELSE
RETURN -1
ENDIF
ENDIF
=RegCloseKey(lnRegHandle)
IF lnResult#ERROR_SUCCESS
*** Not Found
RETURN .NULL.
ENDIF
IF lnSize<2
RETURN ""
ENDIF
*** Return string and strip out NULLs
RETURN SUBSTR(lcDataBuffer,1,lnSize-1)
ENDFUNC
* ReadRegistryString
************************************************************************
* Registry :: WriteRegistryString
*********************************
*** Function: Writes a string value to the registry.
*** If the value doesn't exist it's created. If the key
*** doesn't exist it is also created, but this will only
*** succeed if it's the last key on the hive.
*** Pass: tnHKEY - HKEY value (in WCONNECT.h)
*** tcSubkey - The Registry subkey value
*** tcEntry - The actual Key to write to
*** tcValue - Value to write or .NULL. to delete key
*** tlCreate - Create if it doesn't exist
*** Assume: Use with extreme caution!!! Blowing your registry can
*** hose your system!
*** Return: .T. or .NULL. on error
************************************************************************
FUNCTION WriteRegistryString
LPARAMETERS tnHKey, tcSubkey, tcEntry, tcValue,tlCreate
LOCAL lnRegHandle, lnResult, lnSize, lcDataBuffer, tnType
tnHKey=IIF(type("tnHKey")="N",tnHKey,HKEY_LOCAL_MACHINE)
lnRegHandle=0
lnResult=RegOpenKey(tnHKey,tcSubKey,@lnRegHandle)
IF lnResult#ERROR_SUCCESS
IF !tlCreate
RETURN .F.
ELSE
lnResult=RegCreateKey(tnHKey,tcSubKey,@lnRegHandle)
IF lnResult#ERROR_SUCCESS
RETURN .F.
ENDIF
ENDIF
ENDIF
*** Need to define here specifically for Return Type!
*** Here lpbData is STRING.
DECLARE INTEGER RegSetValueEx ;
IN Win32API ;
INTEGER nHKey,;
STRING lpszEntry,;
INTEGER dwReserved,;
INTEGER fdwType,;
STRING lpbData,;
INTEGER cbData
*** Check for .NULL. which means delete key
IF !ISNULL(tcValue)
*** Nope - write new value
lnSize=LEN(tcValue)
if lnSize=0
tcValue=CHR(0)
ENDIF
lnResult=RegSetValueEx(lnRegHandle,tcEntry,0,REG_SZ,;
tcValue,lnSize)
ELSE
*** Delete a value from a key
DECLARE INTEGER RegDeleteValue ;
IN Win32API ;
INTEGER nHKEY,;
STRING cEntry
*** DELETE THE KEY
lnResult=RegDeleteValue(lnRegHandle,tcEntry)
ENDIF
=RegCloseKey(lnRegHandle)
IF lnResult#ERROR_SUCCESS
RETURN .F.
ENDIF
RETURN .T.
ENDPROC
* WriteRegistryString
FUNCTION EnumKey
************************************************************************
* wwAPI :: EnumRegistryKey
*********************************
*** Function: Returns a registry key name based on an index
*** Allows enumeration of keys in a FOR loop. If key
*** is empty end of list is reached.
*** Pass: tnHKey - HKEY_ root key
*** tcSubkey - Subkey string
*** tnIndex - Index of key name to get (0 based)
*** Return: "" on error - Key name otherwise
************************************************************************
LPARAMETERS tnHKey, tcSubKey, tnIndex
LOCAL lcSubKey, lcReturn, lnResult, lcDataBuffer
lnRegHandle=0
*** Open the registry key
lnResult=RegOpenKey(tnHKey,tcSubKey,@lnRegHandle)
IF lnResult#ERROR_SUCCESS
*** Not Found
RETURN .NULL.
ENDIF
DECLARE Integer RegEnumKey ;
IN WIN32API ;
INTEGER nHKey, ;
INTEGER nIndex, ;
STRING @cSubkey, ;
INTEGER nSize
lcDataBuffer=SPACE(MAX_INI_BUFFERSIZE)
lnSize=MAX_INI_BUFFERSIZE
lnResult=RegENumKey(lnRegHandle, tnIndex, @lcDataBuffer, lnSize)
=RegCloseKey(lnRegHandle)
IF lnResult#ERROR_SUCCESS
*** Not Found
RETURN .NULL.
ENDIF
RETURN TRIM(CHRTRAN(lcDataBuffer,CHR(0),""))
ENDFUNC
* EnumRegistryKey
FUNCTION GetProfileString
************************************************************************
* wwAPI :: GetProfileString
***************************
*** Modified: 09/26/95
*** Function: Read Profile String information from a given
*** text file using Windows INI formatting conventions
*** Pass: pcFileName - Name of INI file
*** pcSection - [Section] in the INI file ("Drivers")
*** pcEntry - Entry to retrieve ("Wave")
*** If this value is a null string
*** all values for the section are
*** retrieved seperated by CHR(13)s
*** Return: Value(s) or .NULL. if not found
************************************************************************
LPARAMETERS pcFileName,pcSection,pcEntry, pnBufferSize
LOCAL lcIniValue, lnResult
*pcFileName=IIF(TYPE("pcFileName")="C",pcFileName,"")
*pcSection=IIF(TYPE("pcSection")="C",pcSection,"")
*** Default to 0, which means all entries!
*pcEntry=IIF(TYPE("pcEntry")="C",pcEntry,0)
*** Initialize buffer for result
lcIniValue=SPACE(IIF( type("pnBufferSize")="N",pnBufferSize,MAX_INI_BUFFERSIZE) )
lnResult=GetPrivateProfileString(pcSection,pcEntry,"*None*",;
@lcIniValue,LEN(lcIniValue),pcFileName)
*** Strip out Nulls
IF TYPE("pcEntry")="N" AND pcEntry=0
*** 0 was passed to get all entry labels
*** Seperate all of the values with a Carriage Return
lcIniValue=TRIM(CHRTRAN(lcIniValue,CHR(0),CHR(13)) )
ELSE
*** Individual Entry
lcIniValue=SUBSTR(lcIniValue,1,lnResult)
ENDIF
*** On error the result contains "*None"
IF lcIniValue="*None*"
lcIniValue=.NULL.
ENDIF
RETURN lcIniValue
ENDFUNC
* GetProfileString
************************************************************************
* wwAPI :: GetProfileSections
*********************************
*** Function: Retrieves all sections of an INI File
*** Pass: @laSections - Empty array to receive sections
*** lcIniFile - Name of the INI file
*** lnBufSize - Size of result buffer (optional)
*** Return: Count of Sections
************************************************************************
FUNCTION aProfileSections
LPARAMETERS laSections, lcIniFile
LOCAL lnBufsize, lcBuffer, lnSize, lnResult, lnCount
lnBufsize=IIF(EMPTY(lnBufsize),16484,lnBufsize)
DECLARE INTEGER GetPrivateProfileSectionNames ;
IN WIN32API ;
STRING @lpzReturnBuffer,;
INTEGER nSize,;
STRING lpFileName
lcBuffer = SPACE(lnBufSize)
lnSize = lEN(lcBuffer)
lnResult = GetPrivateProfileSectionNames(@lcBuffer,lnSize,lcIniFile)
IF lnResult < 3
RETURN 0
ENDIF
lnCount = aParseString(@laSections,TRIM(lcBuffer),CHR(0))
lnCount = lnCount - 2
IF lnCount > 0
DIMENSION laSections[lnCount]
ENDIF
RETURN lnCount
ENDFUNC
* wwAPI :: aProfileSections
************************************************************************
* wwAPI :: WriteProfileString
*********************************
*** Function: Writes a value back to an INI file
*** Pass: pcFileName - Name of the file to write to
*** pcSection - Profile Section
*** pcKey - The key to write to
*** pcValue - The value to write
*** Return: .T. or .F.
************************************************************************
FUNCTION WriteProfileString
LPARAMETERS pcFileName,pcSection,pcEntry,pcValue
DECLARE INTEGER WritePrivateProfileString ;
IN WIN32API ;
STRING cSection,STRING cEntry,STRING cEntry,;
STRING cFileName
lnRetVal=WritePrivateProfileString(pcSection,pcEntry,pcValue,pcFileName)
if lnRetval=1
RETURN .t.
endif
RETURN .f.
ENDFUNC
* WriteProfileString
FUNCTION GetTempPath
************************************************************************
* wwAPI :: GetTempPath
***********************
*** Function: Returns the OS temporary files path
*** Return: Temp file path with trailing "\"
************************************************************************
LOCAL lcPath, lnResult
*** API Definition:
*** ---------------
*** DWORD GetTempPath(cchBuffer, lpszTempPath)
***
*** DWORD cchBuffer; /* size, in characters, of the buffer */
*** LPTSTR lpszTempPath; /* address of buffer for temp. path name */
DECLARE INTEGER GetTempPath ;
IN WIN32API AS GetTPath ;
INTEGER nBufSize, ;
STRING @cPathName
lcPath=SPACE(256)
lnSize=LEN(lcPath)
lnResult=GetTPath(lnSize,@lcPath)
IF lnResult=0
lcPath=""
ELSE
lcPath=SUBSTR(lcPath,1,lnResult)
ENDIF
RETURN lcPath
ENDFUNC
* eop GetTempPath
FUNCTION GetEXEFile
************************************************************************
* wwAPI :: GetEXEFileName
*********************************
*** Function: Returns the Module name of the EXE file that started
*** the current application. Unlike Application.Filename
*** this function correctly returns the name of the EXE file
*** for Automation servers too!
*** Return: Filename or "" (VFP.EXE is returned in Dev Version)
************************************************************************
DECLARE integer GetModuleFileName ;
IN WIN32API ;
integer hinst,;
string @lpszFilename,;
integer @cbFileName
lcFilename=space(256)
lnBytes=255
=GetModuleFileName(0,@lcFileName,@lnBytes)
lnBytes=AT(CHR(0),lcFileName)
IF lnBytes > 1
lcFileName=SUBSTR(lcFileName,1,lnBytes-1)
ELSE
lcFileName=""
ENDIF
RETURN lcFileName
ENDFUNC
* GetEXEFileName
************************************************************************
* WinApi :: ShellExecute
*********************************
*** Author: Rick Strahl, West Wind Technologies
*** http://www.west-wind.com/
*** Function: Opens a file in the application that it's
*** associated with.
*** Pass: lcFileName - Name of the file to open
*** lcWorkDir - Working directory
*** lcOperation -
*** Return: 2 - Bad Association (invalid URL)
*** 31 - No application association
*** 29 - Failure to load application
*** 30 - Application is busy
***
*** Values over 32 indicate success
*** and return an instance handle for
*** the application started (the browser)
************************************************************************
*** FUNCTION ShellExecute
*** LPARAMETERS lcFileName, lcWorkDir, lcOperation
***
*** lcWorkDir=IIF(type("lcWorkDir")="C",lcWorkDir,"")
*** lcOperation=IIF(type("lcOperation")="C",lcOperation,"Open")
***
*** DECLARE INTEGER ShellExecute ;
*** IN SHELL32.DLL ;
*** INTEGER nWinHandle,;
*** STRING cOperation,;
*** STRING cFileName,;
*** STRING cParameters,;
*** STRING cDirectory,;
*** INTEGER nShowWindow
***
*** RETURN ShellExecute(0,lcOperation,lcFilename,"",lcWorkDir,1)
*** ENDFUNC
*** * ShellExecute
************************************************************************
* wwAPI :: CopyFile
*********************************
*** Function: Copies File. Faster than Fox Copy and handles
*** errors internally.
*** Pass: tcSource - Source File
*** tcTarget - Target File
*** tnFlag - 0* override, 1 don't
*** Return: .T. or .F.
************************************************************************
FUNCTION CopyFile
LPARAMETERS lcSource, lcTarget,nFlag
LOCAL lnRetVal
*** Copy File and overwrite
nFlag=IIF(type("nFlag")="N",nFlag,0)
DECLARE INTEGER CopyFile ;
IN WIN32API ;
STRING @cSource,;
STRING @cTarget,;
INTEGER nFlag
lnRetVal=CopyFile(@lcSource,@lcTarget,nFlag)
RETURN IIF(lnRetVal=0,.F.,.T.)
ENDPROC
* CopyFile
FUNCTION GetUserName
DECLARE INTEGER GetUserName ;
IN WIN32API ;
STRING@ cComputerName,;
INTEGER@ nSize
lcComputer=SPACE(80)
lnSize=80
=GetUserName(@lcComputer,@lnSize)
IF lnSize < 2
RETURN ""
ENDIF
RETURN SUBSTR(lcComputer,1,lnSize-1)
FUNCTION GetComputerName
************************************************************************
* wwAPI :: GetComputerName
*********************************
*** Function: Returns the name of the current machine
*** Return: Name of the computer
************************************************************************
DECLARE INTEGER GetComputerName ;
IN WIN32API ;
STRING@ cComputerName,;
INTEGER@ nSize
lcComputer=SPACE(80)
lnSize=80
=GetComputername(@lcComputer,@lnSize)
IF lnSize < 2
RETURN ""
ENDIF
RETURN SUBSTR(lcComputer,1,lnSize)
ENDFUNC
* GetComputerName
FUNCTION LogonUser
************************************************************************
* wwAPI :: LogonUser
*********************************
*** Function: Check whether a username and password is valid
*** Assume: Account checking must have admin rights
*** Pass: Username, Password and optionally a server
*** Return: .T. or .F.
************************************************************************
LPARAMETERS lcUsername, lcPassword, lcServer
IF EMPTY(lcUsername)
RETURN .F.
ENDIF
IF EMPTY(lcPassword)
lcPassword = ""
ENDIF
IF EMPTY(lcServer)
lcServer = "."
ENDIF
#define LOGON32_LOGON_INTERACTIVE 2
#define LOGON32_LOGON_NETWORK 3
#define LOGON32_LOGON_BATCH 4
#define LOGON32_LOGON_SERVICE 5
#define LOGON32_PROVIDER_DEFAULT 0
DECLARE INTEGER LogonUser in WIN32API ;
String lcUser,;
String lcServer,;
String lcPassword,;
INTEGER dwLogonType,;
Integer dwProvider,;
Integer @dwToken
lnToken = 0
lnResult = LogonUser(lcUsername,lcServer,lcPassword,;
LOGON32_LOGON_NETWORK,LOGON32_PROVIDER_DEFAULT,@lnToken)
DECLARE INTEGER CloseHandle IN WIN32API INTEGER
CloseHandle(lnToken)
RETURN IIF(lnResult=1,.T.,.F.)
ENDFUNC
* wwAPI :: LogonUser
FUNCTION GetSystemDir
************************************************************************
* wwAPI :: GetSystemDir
*********************************
*** Function: Returns the Windows System directory path
*** Pass: llWindowsDir - Optional: Retrieve the Windows dir
*** Return: Windows System directory or "" if failed
************************************************************************
LPARAMETER llWindowsDir
LOCAL lcPath, lnSize
lcPath=SPACE(256)
IF !llWindowsDir
DECLARE INTEGER GetSystemDirectory ;
IN Win32API ;
STRING @pszSysPath,;
INTEGER cchSysPath
lnsize=GetSystemDirectory(@lcPath,256)
ELSE
DECLARE INTEGER GetWindowsDirectory ;
IN Win32API ;
STRING @pszSysPath,;
INTEGER cchSysPath
lnsize=GetWindowsDirectory(@lcPath,256)
ENDIF
if lnSize > 0
RETURN SUBSTR(lcPath,1,lnSize) + "\"
ENDIF
RETURN ""
ENDFUNC
* GetSystemDir
FUNCTION GetCurrentThread
************************************************************************
* wwAPI :: GetCurrentThread
*********************************
*** Function: Returns handle to the current Process/Thread
*** Return: Process Handle or 0
************************************************************************
RETURN GetCurrentThread()
ENDFUNC
* GetProcess
************************************************************************
* wwAPI :: GetThreadPriority
*********************************
*** Function: Gets the current Priority setting of the thread.
*** Use to save and reset priority when bumping it up.
*** Pass: tnThreadHandle
************************************************************************
FUNCTION GetThreadPriority
LPARAMETER tnThreadHandle
RETURN GetThreadPriority(tnThreadHandle)
ENDFUNC
* GetThreadPriority
FUNCTION SetThreadPriority
************************************************************************
* wwAPI :: SetThreadPriority
*********************************
*** Function: Sets a thread process priority. Can dramatically
*** increase performance of a task.
*** Pass: tnThreadHandle
*** tnPriority 0 - Normal
*** 1 - Above Normal
*** 2 - Highest Priority
*** 15 - Time Critical
*** 31 - Real Time (doesn't work w/ Win95)
************************************************************************
LPARAMETER tnThreadHandle,tnPriority
RETURN SetThreadPriority(tnThreadHandle,tnPriority)
ENDFUNC
* GetThreadPriority
FUNCTION PlayWave
************************************************************************
* wwapi :: PlayWave
*******************
*** Class: WinAPI
*** Function: Plays the Wave File or WIN.INI
*** [Sounds] Entry specified in the
*** parameter. If the .WAV file or
*** System Sound can't be found,
*** SystemDefault beep is played
*** Assume: Runs only under Windows
*** uses MMSYSTEM.DLL (Win 3.1)
*** WINMM.DLL (32 bit Win)
*** Pass: pcWaveFile - Full path of Wave file
*** or System Sound Entry
*** pnPlayType - 1 - sound plays in background (default)
*** 0 - sound plays - app waits
*** 2 - No default sound if file doesn't exist
*** 4 - Kill currently playing sound
*** 8 - Continous
*** Values can be added together for combinations
*** Examples:
*** do PlayWav with "SystemQuestion"
*** do PlayWav with "C:\Windows\System\Ding.wav"
*** if PlayWav("SystemAsterisk")
***
*** Return: .t. if Wave was played .f. otherwise
*************************************************************************
LPARAMETER pcWaveFile,pnPlayType
LOCAL lhPlaySnd,llRetVal
pnPlayType=IIF(TYPE("pnPlayType")="N",pnPlayType,1)
llRetVal=.f.
DECLARE INTEGER PlaySound ;
IN WINMM.dll ;
STRING cWave, INTEGER nModule, INTEGER nType
IF PlaySound(pcWaveFile,0,pnPlayType)=1
llRetVal=.t.
ENDIF
RETURN llRetVal
ENDFUNC
*EOF PLAYWAV
FUNCTION CreateGUID
************************************************************************
* wwapi::CreateGUID
********************
*** Author: Rick Strahl, West Wind Technologies
*** http://www.west-wind.com/
*** Modified: 01/26/98
*** Function: Creates a globally unique identifier using Win32
*** COM services. The vlaue is guaranteed to be unique
*** Format: {9F47F480-9641-11D1-A3D0-00600889F23B}
*** Return: GUID as a string or "" if the function failed
*************************************************************************
LPARAMETERS llRaw
LOCAL lcStruc_GUID, lcGUID, lnSize
DECLARE INTEGER CoCreateGuid ;
IN Ole32.dll ;
STRING @lcGUIDStruc
DECLARE INTEGER StringFromGUID2 ;
IN Ole32.dll ;
STRING cGUIDStruc, ;
STRING @cGUID, ;
LONG nSize
*** Simulate GUID strcuture with a string
lcStruc_GUID = REPLICATE(" ",16)
lcGUID = REPLICATE(" ",80)
lnSize = LEN(lcGUID) / 2
IF CoCreateGuid(@lcStruc_GUID) # 0
RETURN ""
ENDIF
IF llRaw
RETURN lcStruc_GUID
ENDIF
*** Now convert the structure to the GUID string
IF StringFromGUID2(lcStruc_GUID,@lcGuid,lnSize) = 0
RETURN ""
ENDIF
*** String is UniCode so we must convert to ANSI
RETURN StrConv(LEFT(lcGUID,76),6)
* Eof CreateGUID
FUNCTION Sleep(lnMilliSecs)
************************************************************************
* wwAPI :: Sleep
*********************************
*** Function: Puts the computer into idle state. More efficient and
*** no keyboard interface than Inkey()
*** Pass: tnMilliseconds
*** Return: nothing
************************************************************************
lnMillisecs=IIF(type("lnMillisecs")="N",lnMillisecs,0)
DECLARE Sleep ;
IN WIN32API ;
INTEGER nMillisecs
=Sleep(lnMilliSecs)
ENDFUNC
* Sleep
************************************************************************
* wwAPI :: GetLastError
*********************************
*** Function:
*** Assume:
*** Pass:
*** Return:
************************************************************************
FUNCTION GetLastError
DECLARE INTEGER GetLastError IN Win32API
RETURN GetLastError()
ENDFUNC
* wwAPI :: GetLastError
************************************************************************
* wwAPI :: GetSystemErrorMsg
*********************************
*** Function: Returns the Message text for a Win32API error code.
*** Pass: lnErrorNo - WIN32 Error Code
*** Return: Error Message or "" if not found
************************************************************************
FUNCTION GetSystemErrorMsg
LPARAMETERS lnErrorNo,lcDLL
LOCAL szMsgBuffer,lnSize
szMsgBuffer=SPACE(500)
DECLARE INTEGER FormatMessage ;
IN WIN32API ;
INTEGER dwFlags ,;
STRING lpvSource,;
INTEGER dwMsgId,;
INTEGER dwLangId,;
STRING @lpBuffer,;
INTEGER nSize,;
INTEGER Arguments
lnSize=FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM,0,lnErrorNo,;
0,@szMsgBuffer,LEN(szMsgBuffer),0)
IF LEN(szMsgBUffer) > 1
szMsgBuffer=SUBSTR(szMsgBuffer,1, lnSize-1 )
ELSE
szMsgBuffer=""
ENDIF
RETURN szMsgBuffer
#IF .F. &&!DEBUGMODE
************************************************************************
* wwAPI :: Error
*********************************
*** Function: Sets an Error number of the error occurred
************************************************************************
FUNCTION Error
LPARAMETERS nError, cMethod, nLine
THIS.nLastError=nError
ENDFUNC
* Error
#ENDIF
ENDDEFINE
*EOC wwAPI
************************************************************************
FUNCTION GetTimeZone
*********************************
*** Function: Returns the TimeZone offset from GMT including
*** daylight savings. Result is returned in minutes.
************************************************************************
DECLARE integer GetTimeZoneInformation IN Win32API ;
STRING @ TimeZoneStruct
lcTZ = SPACE(256)
lnDayLightSavings = GetTimeZoneInformation(@lcTZ)
lnOffset = CharToBin(SUBSTR(lcTZ,1,4))
*** Subtract an hour if daylight savings is active
IF lnDaylightSavings = 2
lnOffset = lnOffset - 60
ENDIF
RETURN lnOffSet
**** Binary Numeric conversion routines!
*** Converts DWORD string to binary unsigned integer
FUNCTION CharToBin(tcWord)
LOCAL i, lnWord
lnWord = 0
FOR i = 1 TO LEN(tcWord)
lnWord = lnWord + (ASC(SUBSTR(tcWord, i, 1)) * (2 ^ (8 * (i - 1))))
ENDFOR
RETURN lnWord
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