searchpath API call

[dberndt]

Hi
i have recently been righting a highly modified/specialized installer and i need to search the whole path and the windows directories for a file to find out if it exists. So i figure what better way than searchpath.

Declare Function SearchPath Lib "kernel32" Alias "SearchPathA" (ByVal lpPath As String, ByVal lpFileName As String, ByVal lpExtension As String, ByVal nBufferLength As Long, ByVal lpBuffer As String, ByVal lpFilePart As String) As Long

The problem is that either i am not passing it a proper null string for the lpPath or it doesn't work as the msdn says. I can do this
x= SearchPath("","autoexec.bat", "", 0, temp, 0)
and x is always 0
but if i just give it
x= SearchPath("c:\","autoexec.bat", "", 0, temp, 0) it works great. so i suspect that there is something funky happenning when i pass it "" for lpPath.

Any help would be appreciated.

Thanks

David Berndt

[krazymike]

Try:

    Dim mPath As String * 1024 ' set some value to mPath
    Dim mBuffer As Long

    ' how big buffer do I need
    mBuffer = ("c:", "autoexec.bat", ".bat", 0, mPath, 0)
    ' let's get the path SearchPathif exists
    mBuffer = SearchPath("c:\", "autoexec.bat", ".bat", mBuffer, mPath, 0)

    Debug.Print Left(mPath, mBuffer)

[LaVolpe]

To use null string values, recommend passing vbNullString, not ""