fix b3RobotSimulatorClientAPI_NoDirect::changeConstraint API

examples/SharedMemory/SharedMemoryPublic.h

@@ -309,6 +309,23 @@ struct b3UserDataValue
 	const char* m_data1;
 };
 
+enum EnumUserConstraintFlags
+{
+	USER_CONSTRAINT_ADD_CONSTRAINT = 1,
+	USER_CONSTRAINT_REMOVE_CONSTRAINT = 2,
+	USER_CONSTRAINT_CHANGE_CONSTRAINT = 4,
+	USER_CONSTRAINT_CHANGE_PIVOT_IN_B = 8,
+	USER_CONSTRAINT_CHANGE_FRAME_ORN_IN_B = 16,
+	USER_CONSTRAINT_CHANGE_MAX_FORCE = 32,
+	USER_CONSTRAINT_REQUEST_INFO = 64,
+	USER_CONSTRAINT_CHANGE_GEAR_RATIO = 128,
+	USER_CONSTRAINT_CHANGE_GEAR_AUX_LINK = 256,
+	USER_CONSTRAINT_CHANGE_RELATIVE_POSITION_TARGET = 512,
+	USER_CONSTRAINT_CHANGE_ERP = 1024,
+	USER_CONSTRAINT_REQUEST_STATE = 2048,
+	USER_CONSTRAINT_ADD_SOFT_BODY_ANCHOR = 4096,
+};
+
 struct b3UserConstraint
 {
 	int m_parentBodyIndex;