AFAIK it's impossible, but I may be wrong.

>The function below is progress bar to copy file in windows
>
>It the funcion below, anybody knows how to modify the caption
>of the windows of the progress bar ?
>
>

>************************************************************
>FUNCTION FileOpWithProgressbar
>#INCLUDE SHFileOperation.h
>
>LPARAMETERS tcSource, tcDestination, tcAction, tlUserCanceled
>LOCAL lcSourceString, lcDestString, nStringBase, lcFileOpStruct, lnFlag, lnStringBase
>LOCAL loHeap, lcAction, lnRetCode, llCanceled, laActionList[1]
>
>DECLARE INTEGER SHFileOperation IN SHELL32.DLL STRING @ LPSHFILEOPSTRUCT
>SET PROCEDURE TO CLSHEAP ADDITIVE
>loHeap = CREATEOBJ('Heap')
>
>lcAction = UPPER(IIF( Empty( tcAction) Or VarType(tcAction) <> "C", "COPY", tcAction))
>* Convert Action name into function parameter
>ALINES(laActionList, "MOVE,COPY,DELETE,RENAME", ",")
>lnAction = ASCAN(laActionList, lcAction)
>IF lnAction = 0
>	* Unknown action
>	RETURN Null
>ENDIF
>
>lcSourceString = tcSource + CHR(0) + CHR(0)
>lcDestString   = tcDestination + CHR(0) + CHR(0)
>lnStringBase   = loHeap.AllocBlob(lcSourceString+lcDestString)
>
>lnFlag = FOF_NOCONFIRMATION + FOF_NOCONFIRMMKDIR + FOF_NOERRORUI
>
>
>lcFileOpStruct  = NumToLONG(_screen.hWnd) + ;
>                NumToLONG(lnAction) + ;
>                NumToLONG(lnStringBase) + ;
>                NumToLONG(lnStringBase + LEN(lcSourceString)) + ;
>                NumToWORD(lnFlag) + ;
>                NumToLONG(0) + NumToLONG(0) + NumToLONG(0)
>
>lnRetCode = SHFileOperation(@lcFileOpStruct)
>
>* Did user canceled operation?
>tlUserCanceled= ( SUBSTR(lcFileOpStruct, 19, 4) <> NumToLONG(0) )
>
>RETURN (lnRetCode = 0)
>
>***********************************