Type Definition windows_sys::Win32::Networking::WindowsWebServices::WS_CREATE_CHANNEL_CALLBACK

pub type WS_CREATE_CHANNEL_CALLBACK = Option<unsafe extern "system" fn(channeltype: WS_CHANNEL_TYPE, channelparameters: *const c_void, channelparameterssize: u32, channelinstance: *mut *mut c_void, error: *const WS_ERROR) -> HRESULT>;

Required features: "Win32_Networking_WindowsWebServices"