Retrieves information about the font specified by a visual style for a particular part
#include <WinAPITheme.au3>
_WinAPI_GetThemeTextMetrics ( $hTheme, $iPartID, $iStateID [, $hDC = 0] )
| $hTheme | Handle to a window's specified theme data. |
| $iPartID | The part to retrieve font information about. |
| $iStateID | The state of the part. |
| $hDC | [optional] Handle to the device context to use for screen context. |
| Success: | $tagTEXTMETRIC structure that contains the font information. |
| Failure: | Sets the @error flag to non-zero, @extended flag may contain the HRESULT error code. |
Search GetThemeTextMetrics in MSDN Library.