Retrieves the value of a filename property.
#Include <WinAPIEx.au3>
_WinAPI_GetThemeFilename ( $hTheme, $iPartId, $iStateId, $iPropId )
| $hTheme | Handle to a window's specified theme data. |
| $iPartId | The part that contains the filename property. |
| $iStateId | The state of the part. |
| $iPropId | The property to retrieve ($TMT_*). |
| Success | The retrieved file name. |
| Failure | Empty string and sets the @error flag to non-zero, @extended flag may contain the system error code. |
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