HRESULT SpeedSet(DWORD dwSpeed);
Sets the average talking speed for a voice-text site, in words per minute.
· Returns NOERROR if successful, or one of these error values:
VTXTERR_INVALIDMODE
VTXTERR_INVALIDPARAM
VTXTERR_OUTOFMEM
dwSpeed
[in] New talking speed for the site. An application can specify TTSATTR_MINSPEED or TTSATTR_MAXSPEED for the minimum or maximum allowable value.
The talking speed for a site is saved between uses of the site, even if the user shuts down the computer in the meantime.
If a voice-navigation application is installed on the user's computer, an application may not need to set the speed.