Retrieves basic information for the currently selected font
#include <WinAPIGdi.au3>
_WinAPI_GetTextMetrics ( $hDC )
| $hDC | Handle to the device context. |
| Success: | $tagTEXTMETRIC structure that contains the information about the currently selected font. |
| Failure: | 0 and sets the @error flag to non-zero. |
Search GetTextMetrics in MSDN Library.