Chapter 2 Visual Basic, Controls, and Events

Transcription

1 hapter 2 Visual asic, ontrols, and Events Section 2.1 n Introduction to Visual asic Programming in V 2015 is different from traditional programming environments because first you should () write the code. () input the data. () name the buttons. () draw the user interface. 2. GUI stands for () graphical user interface. () graphing user introduction. () graphical unit interface. () graphical user input. 3. mouse click is an example of an event. (/) Section 2.2 Visual asic ontrols 1. Press 4 to () run a program. () display the Properties window. () display the Solution Explorer window. () terminate a program. 2. Which of the properties in a control's list of properties is used to give the control a meaningful name? () ext () ontextmenu () ontrolname () Name

2 3. Visual asic access keys are created by using which symbol in a button's ext property? () & () % () # 4. Which of the following steps specifies P as the access key for a button? () Set the ext property to om_pute. () Set the ext property to om&pute. () Set the ext property to &om_pute. () Set the ext property to compute. 5. When a Visual asic program is running, the user can move from one control to another using the keyboard by pressing the () ab key. () Space bar. () Enter key. () ackspace key. 6. Which of the following properties determines the words appearing in a form's title bar? () ext () aption () Name () itle 7. What effect will the following statement have? lblone.visible = alse () Enable lblone () elete lblone () Make lblone invisible () It is not a valid Visual asic statement. 8. When creating a new program in Visual asic, you are asked to supply a name for the program. If you do not specify a name, a default name is used. What is this default name? () Wapplication followed by a number. () pplication followed by a number. () Windowspplication. () Windowspplication followed by a number.

3 9. In Visual asic, tooltips assist by showing a small caption about the purpose of each icon on the oolbar. How do you make a tooltip appear? () Right click the oolbar icon and select purpose from the available options. () Position the mouse pointer over the icon for a few seconds. () Hold down a shift key, then click the appropriate oolbar icon to display its purpose. () Hold down the lt key, then click the appropriate oolbar icon to display its purpose. 10. he Properties window plays an important role in the development of Visual asic programs. It is mainly used () to change how objects look and feel. () when opening programs stored on a disk. () to allow the developer to graphically design program components. () to set program related options like Program Name, Program Location, etc. 11. Sizing Handles make it very easy to resize virtually any control when developing programs with Visual asic. When working in the orm esigner, how are these sizing handles displayed? () rectangle with 4 arrows, one in each corner, around your control. () 3- outline around your control. () rectangle with small squares around your control. () None of the above 12. he ont dialog box allows you to select different onts, their style, their size, and some other special effects. How do you bring up this ont dialog box? () In the Properties window, click the ellipsis ( ) on the right side of the settings box for the ont property. () ouble-click the control, and select ont Property. () Right-click the control, and select ont Property. () None of the above 13. What keyboard shortcut is used to run the current program? () 4 () 5 () 6 () 7

4 14. What would be a good name for a text box to hold a person s first name? () txtirstname () irstname () txt irst Name () irst Name 15. What feature in Visual asic allows you to make more room on your screen by temporarily concealing certain windows? () Help () uto Hide () uto Minimize () Expert-View 16. What property is available for most controls that allows you to hide/unhide them either manually by setting the property or by setting it during run time via code? () lear () Refresh () Visible () View-ontrol 17. What property of controls tells the order they receive the focus when the tab key is pressed during run time? () ocus order () ocus number () ab index () ontrol order 18. What is the default tab index of the first object placed on a form? () 0 () 1 () irst () None of the above 19. What property of a control determines whether the control can receive the focus during run time? () aborder () ocus () abindex () abstop

5 20. What menu is used to align controls on a form? () View () Window () uild () ormat 21. Which of the following is not a submenu of the ormat menu? () lign () Make Same Size () enter in orm () Widen 22. What property causes a control to disappear when set to alse? () etectible () Visible () isabled () Supported 23. What property restricts the use of a control when set to alse? () vailable () ccessible () Enabled () Supported 24. hanging a control's ext property also changes how you refer to the control in code. (/) 25. You can display the Properties window by pressing 4. (/) 26. he Properties window is used to change how objects look and react. (/) 27. When working with text boxes, the sizing handles allow you to resize the object by dragging to make it wider or narrower. (/) 28. Once a text box control is placed on a form, it cannot be resized or moved. (/) is the keyboard shortcut used to activate the Properties window. (/)

6 30. Once a control is placed on a form, you can rename it by editing the Name property in the Properties window. (/) 31. he escription pane, located below the Properties windows, shows a brief explanation of the highlighted property. (/) 32. he oreolor property of a text box changes the color of the form containing the text box. (/) 33. Shortcut keys like 5 (Run), allow you to perform certain tasks without the use of the mouse. (/) 34. he recommended prefix for the name of a button control is btn. (/) 35. he uto Hide feature of the oolbox is active when the pushpin is horizontal. (/) 36. group of several controls can be resized or moved simultaneously. (/) 37. he control with tab index 1 is always the first control to receive the focus when the program is run. (/) 38. Snap lines can be used to align the bottoms, middles, and tops of controls. (/) 39. he key combination Shift + arrow key can be used to resize a control or a group of controls. (/) Section 2.3 Visual asic Events 1. When the user clicks a button, is raised. () an event () a method () a setting () a property

7 2. Which of the following is not one of the three steps used to create a Visual asic program? () create the interface () set the properties of the objects () specify the methods () write the code 3. IntelliSense is a technology built into Visual asic that assists the programmer by () automatically inserting text and words that have similar meaning to those currently being entered by the programmer. () allowing the programmer to edit object properties from inside the code window. () replacing misspelled words with the correct spelling as soon as the programmer presses the Enter key. () automatically displaying the methods and properties available to a control. 4. What of the following is a correct statement for specifying the words to appear in the title bar of orm1? () orm1.ext = "My ext" () orm1.itlear = "My ext" () Me.ext = "My ext" () Me.aption = "My ext" 5. When will the following event procedure be executed? Private Sub txtox_exthanged(...) Handles txtox.exthanged () when text is added to the text box () when text is deleted from the text box () when text is modified inside the text box () ll of the above 6. Which of the following statements specifies that the color of the text in txtox be red? () txtox.ext = olor.red () txtox.oreolor = olor.red () txtox.oreolor = Red () txtox = olor.red

8 7. he statement btnutton.ocus() () has no effect. () moves the focus to the button btnutton. () has the same effect as clicking on the button btnutton. () is invalid in Visual asic. 8. Which of the following statements sets the words on a button to "Push Me"? () btnutton.name = "Push Me" () btnutton.ext = Push Me () btnutton.ext = "Push Me" () btnutton = "Push Me" 9. Which of the following is a valid statement in Visual asic? () orm1.ext = "Revenue" () orm1.aption = "Revenue" () btnutton.ext = Push Me () Me.ext = "Revenue" 10. user action such as clicking a button is called () an accident () an event () a procedure () a property 11. Visual asic responds to events using which of the following? () a code procedure () an event procedure () a form procedure () a property 12. Which of the following statements will place "Greetings" in the title bar of a form? () Me.itle = "Greetings" () Me.ext = "Greetings" () Me.Name = "Greetings" () Me.Heading = "Greetings"

9 13. he following lines of code are valid. (/) Private Sub lick(...) Handles lick txtox.ext = "" End Sub 14. Keywords are also referred to as reserved words. (/) 15. omplete Word is a helpful feature produced by the Microsoft echnology called IntelliSense. (/) 16. he Visual asic ode Editor will automatically detect certain types of errors as you are entering code. (/) 17. he statement txtox.ont.old = rue will produce an error message when Visual asic tries to execute it. (/) 18. he Visual asic ode Editor automatically capitalizes the first letters of reserved words. (/) 19. he first line of an event procedure must contain both the keyword Sub and Handles. (/) 20. he statement btnutton = "Press" produces an error message. (/) 21. he Properties window cannot be used to display the events associated with a control. (/) 22. Write a statement that gives the focus to btnompute. btnompute.ocus() 23. Write a statement that disables btnompute. btnompute.enabled = alse