XAllowEvents

int XAllowEvents(Display *display, int event_mode, Time time);

display

Specifies the connection to the X server.

event_mode

Specifies the event mode. You can pass AsyncPointer, SyncPointer, AsyncKeyboard, SyncKeyboard, ReplayPointer, ReplayKeyboard, AsyncBoth, or SyncBoth.

time

Specifies the time. You can pass either a timestamp or CurrentTime.

The XAllowEvents function releases some queued events if the client has caused a device to freeze. It has no effect if the specified time is earlier than the last-grab time of the most recent active grab for the client or if the specified time is later than the current X server time.

XAllowEvents can generate a BadValue error.

BadValue

Some numeric value falls outside the range of values accepted by the request. Unless a specific range is specified for an argument, the full range defined by the argument's type is accepted. Any argument defined as a set of alternatives can generate this error.

Xlib - C Language X Interface