Hi, Everyone,

Please help. I am using an Image Printer which only takes short file path and name, so I must convert the long file name that I use in VFP. So I found GetShortPathName in WIN32API. But I get very unpredictable results: sometimes the function succeds while other times fail with the exactly the same parameters that I pass to the function. The following is the function that atempts to achieve this goal:

LPARAMETERS lpcdir
IF VARTYPE(m.lpcdir)#"C" OR EMPTY(lpcdir) THEN 
	RETURN [] 
ENDIF 
DECLARE integer GetShortPathName IN WIN32API AS API_GetShortPathName String,String@,integer  
LOCAL lcLongPath, lcShortPath, lnReturn
m.lnReturn = 0 
lcShortPath = SPACE(127)+CHR(0)
m.lcLongPath = ALLTRIM(m.lpcDir) + CHR(0) 
m.lnReturn = API_GetShortPathName(lcLongPath,@lcShortPath,128)
IF m.lnReturn >0 THEN 
	m.lcShortPath = ALLTRIM(m.lcShortPath) 
	IF LEN(m.lcShortPath)>0 THEN 
		m.lpcDir = LEFT(m.lcShortPath, LEN(m.lcShortPath)-1) 
	ENDIF 
ENDIF 
RETURN lpcdir