This structure contains information about the time-out period associated with the accessibility options. This time-out period is the length of time that must pass without keyboard, mouse, or touch input before the operating system (OS) automatically turns off the accessibility options. The accessibility options that the time-out affects are mouse keys, toggle keys, high-contrast mode, and sticky keys. Use the accessibility time-out on devices that several users share so that options selected by one user do not inconvenience a subsequent user.
Unsigned integer that specifies the size, in bytes, of this structure.
DWORD that contains a set of bit flags that specify properties of the time-out option. The following table shows the possible values.
The accessibility time-out option is available for use. An application can retrieve this value but cannot set it.
The OS plays a descending siren sound when the time-out period elapses and the OS turns off the accessibility options.
A time-out period is set for accessibility options. If this flag is not set, the options do not time out even if an application specifies a time-out period.
DWORD that specifies the length of the time-out period, in milliseconds.
Use an ACCESSTIMEOUT structure when you call the SystemParametersInfo function with the uiAction parameter set to the SPI_GETACCESSTIMEOUT or SPI_SETACCESSTIMEOUT value. When using SPI_GETACCESSTIMEOUT, you must specify the cbSize member of the ACCESSTIMEOUT structure; the SystemParametersInfo function fills in the remaining members. Specify all structure members when using the SPI_SETACCESSTIMEOUT value.