Retrieves the current intercharacter spacing for the specified device context.
#Include <WinAPIEx.au3>
_WinAPI_GetTextCharacterExtra ( $hDC )
| $hDC | Handle to the device context. |
| Success | The current intercharacter spacing, in logical coordinates. |
| Failure | (-1) and sets the @error flag to non-zero. |
在MSDN中搜索