xosd_set_shadow_offset — Change the shadow-offset of the XOSD window
To increase readability (and 'cos it looks cool) a black shadow can be drawn beneath the text and graphics displayed by XOSD. xosd_set_shadow_offset changes the size of this shadow by altering how many pixels the shadow is offset (to the bottom-right) from the main display. One to four pixels usually is sufficient to get a good effect.
The XOSD window to change.
The number of pixels the shadow is offset from the main display. Initially the shadow-offset is zero.
On success, a zero is returned. On error, -1 is returned and xosd_error is set to indicate the reason for the error.