The C Function:

UINT GetWindowsDirectory(
  LPTSTR lpBuffer,  // buffer for Windows directory
  UINT uSize        // size of directory buffer
);

Is declared in VFP like this:

DECLARE Integer GetWindowsDirectory IN win32api AS GetWindowsDirectory ;
  string @ cBuffer, ;
  Integer nSize

using Integer for UINT, and a character variable *by reference* where the API wants a pointer to a buffer. The variable names in the declaration are optional, and don't need to be the same as the ones you actually use.

First you set up a buffer big enough to hold the value

cWinDir = space(255)
nSize = len(cWinDir)

Then call the function. Note the @, which passes cWinDir by reference

nPathLength = GetWindowsDirectory(@cWinDir, nSize)

GetWindowsDirectory returns the lengh of the string it put in the buffer, so use it to trim off the extra characters padding out your variable

cWinDir = left(cWinDir, nPathLength)

Hope that helps.

>There is little I can find on this WIN32API function as it pertains to anything other than C++. Any thoughts as to its arguments or an alternative means to achieving the same result? The aim is to get the "windows" directory.Thank you in advance.