Variables and Messages for Virtual Classroom

• FirstName
• LastName
• IsTeacher (True or False)
• passwd

• Success (True of False)
• ServerIP ( Return the IP of VC Server if Success=True, otherwise null)

• CourseNum ( total # of available courses e.g. N)
• Course{i}(i=0,1,2......N-1) e.g. Course0, Course1......

• CourseSelected ( the course name which is chosen by user)

• TeacherFirst [note: Teacher's First Name]
• TeacherLast [note: Teacher's Last Name]
• CourseNo
• StudentCount ( total # of students e.g. N)
• FirstName{i}(i=0,1,2......N-1) e.g. FirstName0, FirstName1......
• LastName{i}(i=0,1,2......N-1) e.g. LastName0, LastName1.....
• State{i}(i=0,1,2......N-1) e.g. State0, State1.......

• CourseNo
• IsTeacher ( True or False)
• FirstName
• LastName
• State

• Operation ( Success or Failure)

• MainURL
• AudioURL
• VideoURL
• ForTeacherOnly( True or False)[ note: student is allowed to push page only to teacher ]

• FromFirstName [note: sender's first name]
• FromLastName [note: sender's last name ]
• ToFirstName [note: receiver's first name ]
• ToLastName [note: receiver's last name ]
• MsgColor
• IsAudio ( True or False)
• IsBroadcase( True of False) [note: when true, ToFirstName and ToLastName will be null)

• ShapeNum ( total # of shapes on the board e.g. N)
• ShapeType{i}(i=0,1,2......N-1) e.g. ShapeType0, ShapeType1.....[note: there are four kinds of shape types:  0:Line;1:Rectangle;2:Ellipse;3:RoundRect;4:Text;]

If ShapeType is 4: Text, it will followed by

• PosX{i}(i=0,1,2......N-1) e.g. PosX0, PosX1.......
• PosY{i}(i=0,1,2......N-1) e.g. PosY0, PosY1.......
• TextStr{i}(i=0,1,2......N-1) e.g. TextStr0, TextStr1.......

Otherwise, for other shapes:

• LeftTopX{i} (i=0,1,2......N-1) e.g. LeftTopX0, LeftTopX1.......
• LeftTopY{i} (i=0,1,2......N-1) e.g. LeftTopY0, LeftTopY1.......
• RightBottomX{i}(i=0,1,2......N-1) e.g. RightBottomX0, RightBottomX1.......
• RightBottomY{i}(i=0,1,2......N-1) e.g. RightBottomY0, RightBottomY1......
• LineStyle{i}(i=0,1,2......N-1) e.g. LineStyle0, LineStyle1......
• LineColor{i}(i=0,1,2......N-1) e.g. LineColor0, LineColor1......
• LineWidth{i}(i=0,1,2......N-1) e.g. LineWidth0, LineWidth1......
• BrushStyle{i}(i=0,1,2......N-1) e.g. BrushStyle0, BrushStyle1......
• BrushColor{i}(i=0,1,2......N-1) e.g. BrushColor0, BrushColor1......

• MsgText [note: the content of message]
• toFristName
• toLastName
• ForceLogout (True of False) [note: in case of fatal errors, set true forcing client to quit]