/// <summary> /// 独立信令 离开频道接口 /// </summary> /// <param name="param">离开频道的传入参数</param> /// <param name="cb">结果回调见NimSignalingDef.cs</param> public static void Leave(NIMSignalingLeaveParam param, NimSignalingOptCloseOrLeaveHandler cb) { NIMSignalingLeaveParam_C param_c = SignalHelper.GetNativeNIMSignalingLeaveParam(param); int nSizeOfParam = Marshal.SizeOf(param_c); IntPtr param_ptr = Marshal.AllocHGlobal(nSizeOfParam); try { Marshal.StructureToPtr(param_c, param_ptr, false); var user_ptr = NimUtility.DelegateConverter.ConvertToIntPtr(cb); SignalingNativeMethods.nim_signaling_leave(param_ptr, NimSignalingLeaveCb, user_ptr); } catch (Exception ex) { } finally { Marshal.FreeHGlobal(param_ptr); } }