The Application and Research of the VB Programming Question's Rating System which is Based on the Windows Message Mechanism

With the popular of computer and the rapid development of the network, Network Online examination has replaced traditional paper examination gradually, and rating automatically by machine also avoid the disadvantage of rating by people such as waste of time and energy. In this topic, when the VB test involves in simple controls, the system takes the method of the first static score and then dynamic score. For static score, it is that by matching the information of controls, event codes, key words and points in the form document of the students' VB programs, and then the system shows the grade of static score according by their weights. However, the dynamic score is that the system runs students' procedure by looking forward of the table of message in the Hook chain to drive students' procedure run automatically, and then shows students' grade based on the results. Besides when there is advanced controls in the test, the system writes every DLL for every question to give the grades of students' procedures. Eventually the system shows the last grades of the students by their static scores and dynamic scores.