LAB 2.0 - Multiple Forms

Goals:

w Use on-line help

w Permanently declare Option Explicit

w Display messages

w Work with multiple forms

w Copy from the hard drive to the floppy drive

__1. Begin a new program

w Start up Visual Basic again

w Name the project Many and the form frmMain

w Choose an appropriate place to save this program

w After choosing an appropriate place, save the project in a new

folder called Multiples.

__2. Become acquainted with the on-line help system.

w Open the online help window

v Click on Help in the menu bar

v Choose Index... from the menu items.

v If the Active Subset is not Visual Basic Documentation,

choose it.

v If the Index tab is not chosen, choose it

v In the open windowlet begin typing visible property until

that entry is highlighted.

v Click on Display

w Find information on the visible property

v When the Topics Found window appears, check to make

sure Visible Property / Visual Basic Reference is highlighted.

v Click on Display again.

w Explore a typical help window

v Click on See Also

v List two topics related to the visible property

v Click on Example

v In the code displayed, what object is made visible?

Invisible?

v Click on Applies To

v Can a label be made visible/invisible? A Textbox?

v In the discussion of Visible Property, find the phrase

Boolean expression and click on it. What is a Boolean

expression?

v How is the visible property related to the Hide and Show

methods?

w Using online help, find out how many methods operate on the

Textbox control.

__3. Choose Option Explicit as a permanent feature

w From the Tools menu choose Options...

w If the Editor tab is not chosen, choose it

w Notice a list of Code Settings, some with a check mark by them.

w Make sure there is a check mark by Require Variable Declaration

If there is no check mark there, click in the little window

Be careful not to disturb any other settings!

w Click on OK

__4. Begin learning to work with multiple forms

w Type Baseball for the caption of frmMain.

w Place 3 command buttons on frmMain, naming them cmdExit,

cmdHomeRuns and cmdStrikeOuts

w Give them appropriate captions

w Add 2 forms to your project

v Click on the Add Form icon in the toolbar (2nd from left)

v Make sure the New tab is chosen and Form is highlighted;

click on Open

v Name the new forms frmHR and frmKO and give them

appropriate captions.

w Save these forms as part of your project

v Click on frmHR in the Project Explorer to highlight it

v Choose Save frmHR As... from the File menu

v Notice that the value of Save In: is the folder Multiples

v Click on Save

v Now save frmKO the same way

v Finally, choose Save Project from the File menu

[Notice, this requires no further response from you].

__5. Create ability to go from form to form

w First, notice that as you (single)click on a form in the Project

Explorer window, that form’s properties are displayed; and as you

double-click on each form, the form itself appears in the Form

Design window.

w Change the visible property of frmHR and frmKO to False.

w Write code for the command buttons of frmMain.

v For cmdExit

End

v For cmdHomeRuns

frmMain.Visible = False

frmHR.Visible = True

v For cmdStrikeOuts

frmMain.Visible = False

frmKO.Visible = True

w Add command buttons to both frmHR and frmKO, naming them

both cmdBack. Why is there no name conflict? Give them

appropriate captions.

w Write code for the first of these buttons

frmHR.Visible = False

frmMain.Visible = True

w Write code for the other button. What do you think that code

should be?

w Now test out your program.

__6. Now add some interest to your program.

w On frmHR place two command buttons, cmdSosa and

cmdMcGwire and one label, lblHowMany. Delete the caption

for the label and give appropriate captions to the command buttons.

w Write code for the command buttons.

v For cmdSosa

lblHowMany.caption = “66”

v For cmdMcGwire

lblHowMany.caption = “70”

w Again, test out your program.

w Now do something similar for frmKO. Here is some information

you can use.

Career strikeouts::

Nolan Ryan - 5714

Steve Carlton - 4136

w Run your program to test it.

w Exit Visual Basic. When you are asked about saving, answer Yes.

__7. Copy your program to a floppy.

w Insert a floppy in the floppy drive.

w Starting at MyComputer, open the folders leading to Multiples

(but do not open Multiples!).

w Find the MyComputer window and open 3-1/2 Floppy

w Drag the Multiples folder into the 3-1/2 Floppy window.

Your program is now saved both on the hard drive and the floppy.

__8. Congratulations! You have completed a difficult assignment. Treat

yourself to some macadamia nuts.