Visual Programming Techniques

Set No. 1

Code No: RR321901

III B.Tech II Semester Supplimentary Examinations, Aug/Sep 2007 VISUAL PROGRAMMING TECHNIQUES (Electronics & Computer Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆⋆⋆⋆⋆ 1. What is IDE. Explain the various features of IDE of Visual Basic.

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2. (a) Explain the importance of OnDraw function. (b) What is the class name of the parameter to the OnDraw function? Explain about three member functions from that class. [6+10] 3. (a) Write a program that displays a message “Hello” whenever the left mouse button in the client area is clicked. (b) Write a program that changes the color of the message when the left mouse button is double clicked. [8+8] 4. (a) Write a program to create a list box in a window. (b) Write a program to perform operations like addition, deletion, insertion of items in a list box. [6+10] 5. An airlines maintains a folder for each pair of destinations ( say Hyderabad -Delhi). Each individual flight details are stored in one file. As and when seats are reserved, the corresponding files are updated. Suggest a VB implementation for the same. [16] 6. Briefly explain some of the debugging tools provided by VB-6 .

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7. An inventory package accepts details about the name of the item, manufacturer and quantity added / quantity drawn as the case may be. It should indicate the quantity available after the transaction. Also, if the quantity falls below the “reorder level” it should display a message “purchases to be undertaken”. Write a VB application with necessary controls to do this. [16] 8. (a) Explain how to Visit the web site www.hotmail.com from your VB application using web browser control. (b) Explain how to insert Active X control in VB. ⋆⋆⋆⋆⋆

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[8+8]

Set No. 2

Code No: RR321901

III B.Tech II Semester Supplimentary Examinations, Aug/Sep 2007 VISUAL PROGRAMMING TECHNIQUES (Electronics & Computer Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆⋆⋆⋆⋆ 1. State the purpose of IDE. Explain the various features of IDE of VC++.

[16]

2. Define Device Context. Explain the purpose of Device context with the help of a neat diagram. [16] 3. What are windows mouse events? How to handle them?

[16]

4. Using control Array, design a simple calculator.

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5. Write a VB implementation to perform the following. Read a master file containing the name, designation and Salary of persons. Copy the details of all those employees with salary < 10000 into one file, between 10,000 and 20,000 into a second file and the others to a third file. At the end, it should display the no of persons and the total salary payable to them. [16] 6. Briefly explain some of the debugging tools provided by VB-6 .

[16]

7. Suggest a VC++ implementation for a bus reservation system.

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8. (a) Explain how to Visit the web site www.hotmail.com from your VB application using web browser control. (b) Explain how to insert Active X control in VB. ⋆⋆⋆⋆⋆

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[8+8]

Set No. 3

Code No: RR321901

III B.Tech II Semester Supplimentary Examinations, Aug/Sep 2007 VISUAL PROGRAMMING TECHNIQUES (Electronics & Computer Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆⋆⋆⋆⋆ 1. (a) Discuss the naming conventions used for variables in VC++. (b) Explain the following terms. i. Workspace pane ii. Editor Area. iii. Output pane.

[6+10]

2. Discuss the various parts of the VC++ program with the help of a neat diagram. [16] 3. (a) How do we record a character in a document. (b) Write a routine to display the text in the view’s OnDraw( ) method. [6+10] 4. Using control Array, design a simple calculator.

[16]

5. Suggest a VC++ implementation for bank that maintains a list of it’s account holders, Balance on hand and their overdraft limit and updates the file as and when the account holders, perform transactions. [16] 6. Briefly explain some of the debugging tools provided by VB-6 .

[16]

7. The salary of an employee is calculated as Basic salary plus DA plus HRA. 20% of Basic Salary is D.A. and 8% Basic is calculated as HRA. Write a VB application to accept the name and Basic salary and display the Gross salary. [16] 8. (a) Explain the steps in creating an Active X control in VC++. (b) Explain how will you add automation and events to the Active X control in VC++. [8+8] ⋆⋆⋆⋆⋆

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Set No. 4

Code No: RR321901

III B.Tech II Semester Supplimentary Examinations, Aug/Sep 2007 VISUAL PROGRAMMING TECHNIQUES (Electronics & Computer Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆⋆⋆⋆⋆ 1. State the purpose of IDE. Explain the various features of IDE of VC++.

[16]

2. (a) What are message maps. (b) What are Afx functions? Explain about any two Afx functions you know. [6+10] 3. Describe the methodology to create a menu using V.B.

[16]

4. (a) Write a program to create a static control in a window. (b) Illustrate the use of edit controls in a window, with an example program. [8+8] 5. A hotel maintains a folder for each room in it. There is a file for each occupant containing information about the occupant, advance paid, rent payable / paid and other details. When the person checks out, the file is closed but retained in the folder. Suggest a VB implementation. [16] 6. Suggest a format for a VB object that works as a calculator.

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7. Assume that Income tax is payable at the rate of 25% of gross salary if it is between 1.5 and 2 lakhs, 25% if it is between 2 to 3 lakhs, and 30% beyond 3 lakhs. Suggest a VB implementation that accepts the name of a person, his basic salary, DA, HRA and CCA and computes his tax payable and displays the result. [16] 8. How do you develop internet applications using Visual Basic? ⋆⋆⋆⋆⋆

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[16]