Function GdipSetAdjustableArrowCapWidth
pub unsafe extern "system" fn GdipSetAdjustableArrowCapWidth(
cap: *mut GpAdjustableArrowCap,
width: f32,
) -> Status
pub unsafe extern "system" fn GdipSetAdjustableArrowCapWidth(
cap: *mut GpAdjustableArrowCap,
width: f32,
) -> Status