Update the window cover used by the navigator.
BPS_API int navigator_window_cover_update(navigator_window_cover_attribute_t *attribute)
A window cover attribute handle.
When a NAVIGATOR_WINDOW_COVER_ENTER event occurs the app has a window cover being displayed. By default, this is a scaled down version of the application's screen. An application can call this function to change what is used for the app's window cover.
On success, BPS_SUCCESS. Otherwise, BPS_FAILURE with errno set and the window cover will not be changed.