CharToBin
Converts a binary 4 byte (Double Word) expression into VFP number.
CharToBin(lcBinString,llSigned)
Parameters
lcBinString
The binary string that contains the 32 bit binary data. This value is usually a value retrieved from a C structure or other memory based buffer.
llSigned
If the value is a signed number rather than an unsigned value set this flag. Note that VFP numeric integers are limited to signed sizes so a large unsigned number that exceeds 2 gigabytes may not translate correctly into a VFP number.
Remarks
This is a free standing function not a method.
This method works only with binary integer values that are exactly 4 bytes long (ie. a DWORD or LONG value).
Example
************************************************************************ 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) *** First 4 bytes contain the timezone offset *** Value is a signed 32 bit Integer lnOffset = CharToBin(SUBSTR(lcTZ,1,4),.T.) *** Subtract an hour if daylight savings is active IF lnDaylightSavings = 2 lnOffset = lnOffset - 60 ENDIF RETURN lnOffSet
See also:
Class wwAPI
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