_WinAPI_ShellGetFileInfo returns blank ICONLOCATION

[piginablanket]

I'm trying to use _WinAPI_ShellGetFileInfo to get the name of the file that contains the default icon for a given extension, but it always returns blank. The ConsoleWrite clearly shows that the function call is working though. Am I doing something wrong or does _WinAPI_ShellGetFileInfo just not work for retrieving the ICONLOCATION?

#AutoIt3Wrapper_Au3Check_Parameters=-q -d -w 1 -w 2 -w 3 -w 4 -w 5 -w 6 -w 7
#include "WinAPI.au3"
#include "WinAPIShellEx.au3"

_Main()

Func _Main()
    Local $t_SHFILEINFO = DllStructCreate($tagSHFILEINFO)
    _WinAPI_ShellGetFileInfo(".TXT", BitOR($SHGFI_TYPENAME, $SHGFI_ICONLOCATION, $SHGFI_USEFILEATTRIBUTES), $FILE_ATTRIBUTE_NORMAL, $t_SHFILEINFO)
    ConsoleWrite(DllStructGetData($t_SHFILEINFO, 4) & "," & DllStructGetData($t_SHFILEINFO, 2) & @CRLF)
    ConsoleWrite(DllStructGetData($t_SHFILEINFO, 5) & @CRLF)
EndFunc

[BrewManNH]

Part of the problem probably lies in the fact that you're not specifying a file, just an extension. The first parameter has to be a file path and name that points to a file.

[LarsJ]

The problem is SHGetFileInfo and the SHGFI_ICONLOCATION attribute. The function is simply not working properly with this attribute. Specifying a full file path will not help. Google "SHGetFileInfo SHGFI_ICONLOCATION" and you will get thousands of hits for exactly this issue.