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Running Visual Basic Applications

Now that you are a bit more familiar with the Visual Basic design environment, let us run few Visual Basic Applications.

Exercise 1.3  Running the Finance Calculator Demo

  1. Create a Folder with the name Finance on your Hard Drive. Copy the Finance Project Source Code, Paste them into Notepad and save them into the Finance folder with the Filename and extension specified:

    Project File: Finance.vbp

    Type=Exe
    Form=Form1.frm
    Reference=*\G{00020430-0000-0000-C000-000000000046}#2.0#0#C:\WINDOWS\system32\stdole2.tlb#OLE Automation
    IconForm="Form1"
    Startup="Form1"
    Command32=""
    Name="Project1"
    HelpContextID="0"
    CompatibleMode="0"
    MajorVer=1
    MinorVer=0
    RevisionVer=0
    AutoIncrementVer=0
    ServerSupportFiles=0
    VersionCompanyName="Home"
    CompilationType=0
    OptimizationType=0
    FavorPentiumPro(tm)=0
    CodeViewDebugInfo=0
    NoAliasing=0
    BoundsCheck=0
    OverflowCheck=0
    FlPointCheck=0
    FDIVCheck=0
    UnroundedFP=0
    StartMode=0
    Unattended=0
    ThreadPerObject=0
    MaxNumberOfThreads=1
    
    [MS Transaction Server]
    AutoRefresh=1
    

    Project File: Finance.vbw

    Form1 = 138, 622, 585, 947, C, 0, 0, 0, 0, 
    

    Project File: Form1.frm

    VERSION 5.00
    Begin VB.Form Form1 
       Caption         =   "New House Payment"
       ClientHeight    =   4665
       ClientLeft      =   5565
       ClientTop       =   2115
       ClientWidth     =   6315
       LinkTopic       =   "Form1"
       ScaleHeight     =   4665
       ScaleWidth      =   6315
       Begin VB.CommandButton cmdCompute 
          Caption         =   "Compute it"
          Height          =   495
          Left            =   1440
          TabIndex        =   3
          Top             =   3840
          Width           =   2175
       End
       Begin VB.TextBox txtYears 
          Height          =   495
          Left            =   3480
          TabIndex        =   2
          Top             =   1800
          Width           =   1815
       End
       Begin VB.TextBox txtRate 
          Height          =   495
          Left            =   3480
          TabIndex        =   1
          Top             =   960
          Width           =   1815
       End
       Begin VB.TextBox txtBorrow 
          Height          =   495
          Left            =   3480
          TabIndex        =   0
          Top             =   240
          Width           =   1815
       End
       Begin VB.Label Label4 
          Caption         =   "Monthly Payments"
          Height          =   495
          Left            =   480
          TabIndex        =   8
          Top             =   2640
          Width           =   2655
       End
       Begin VB.Label Label3 
          Caption         =   "Life of Loan (in years)"
          Height          =   495
          Left            =   480
          TabIndex        =   7
          Top             =   1800
          Width           =   2655
       End
       Begin VB.Label Label2 
          Caption         =   "Yearly interest rate (i.e. 6.5)"
          Height          =   495
          Left            =   480
          TabIndex        =   6
          Top             =   960
          Width           =   2655
       End
       Begin VB.Label Label1 
          Caption         =   "Borrow"
          Height          =   495
          Left            =   480
          TabIndex        =   5
          Top             =   240
          Width           =   2655
       End
       Begin VB.Label lblPayment 
          BorderStyle     =   1  'Fixed Single
          Height          =   495
          Left            =   3480
          TabIndex        =   4
          Top             =   2640
          Width           =   1815
       End
    End
    Attribute VB_Name = "Form1"
    Attribute VB_GlobalNameSpace = False
    Attribute VB_Creatable = False
    Attribute VB_PredeclaredId = True
    Attribute VB_Exposed = False
    Private Sub cmdCompute_Click()
    Dim yearIRate As Single
    Dim nperiod As Integer
    Dim borrow As Currency
    Dim payment As Currency
    
    yearIRate = CSng(txtRate.Text) / (12 * 100)
    nperiod = CInt(txtYears.Text) * 12
    borrow = CCur(txtBorrow.Text)
    
    payment = Pmt(yearIRate, nperiod, -borrow, 0, 0)
    lblPayment.Caption = Format(payment, "Currency")
    
    End Sub
    
  2. Start Visual Basic from Windows.
  3. Select Open Project from File Menu. If a dialog box appears asking you to save a file, click No.
  4. Browse to the Finance folder, where you have saved Finance Project files and select Finance.vbp File and click the Open button.
  5. Choose Run, Start from the Visual Basic menu, or press F5. This runs the Visual Basic application.
  6. Enter Value 100,000 into the Text Control with the label borrow
  7. Enter Value 7.5 into the Text control with the label Yearly Interest Rate.
  8. Enter Value 30 into the Text control with the label Life of loan.
  9. Click on the Command Button to Calculate and display the Monthly Payments.
  10. Choose Options, Exit to exit the application and return to the Visual Basic design environment.
  11. Choose File, Remove Project to remove the Project from the design environment.

Exercise 1.4  Running the Highest and Lowest Score Values Demo

  1. Create a Folder with the name Score on your Hard Drive. Copy the Score Project Source Code, Paste them into Notepad and save them into the Score folder with the Filename and extension specified:

    Project File: HighLow.vbp

    Type=Exe
    Form=Form1.frm
    Reference=*\G{00020430-0000-0000-C000-000000000046}#2.0#0#C:\WINDOWS\system32\stdole2.tlb#OLE Automation
    IconForm="Form1"
    Startup="Form1"
    Command32=""
    Name="Project1"
    HelpContextID="0"
    CompatibleMode="0"
    MajorVer=1
    MinorVer=0
    RevisionVer=0
    AutoIncrementVer=0
    ServerSupportFiles=0
    VersionCompanyName="Home"
    CompilationType=0
    OptimizationType=0
    FavorPentiumPro(tm)=0
    CodeViewDebugInfo=0
    NoAliasing=0
    BoundsCheck=0
    OverflowCheck=0
    FlPointCheck=0
    FDIVCheck=0
    UnroundedFP=0
    StartMode=0
    Unattended=0
    ThreadPerObject=0
    MaxNumberOfThreads=1
    
    [MS Transaction Server]
    AutoRefresh=1
    
    

    Project File: HighLow.vbw

    Form1 = 648, 202, 1253, 947, I, 0, 0, 0, 0, 
    

    Project File: Form1.frm

    VERSION 5.00
    Begin VB.Form Form1 
       Caption         =   "Get Score"
       ClientHeight    =   3765
       ClientLeft      =   5385
       ClientTop       =   2310
       ClientWidth     =   7785
       LinkTopic       =   "Form1"
       ScaleHeight     =   3765
       ScaleWidth      =   7785
       Begin VB.TextBox txtScore 
          Height          =   495
          Index           =   1
          Left            =   1080
          TabIndex        =   0
          Top             =   240
          Width           =   1215
       End
       Begin VB.TextBox txtScore 
          Height          =   495
          Index           =   2
          Left            =   2400
          TabIndex        =   1
          Top             =   240
          Width           =   1215
       End
       Begin VB.TextBox txtScore 
          Height          =   495
          Index           =   3
          Left            =   3720
          TabIndex        =   2
          Top             =   240
          Width           =   1215
       End
       Begin VB.TextBox txtScore 
          Height          =   495
          Index           =   4
          Left            =   5040
          TabIndex        =   3
          Top             =   240
          Width           =   1215
       End
       Begin VB.TextBox txtScore 
          Height          =   495
          Index           =   5
          Left            =   6360
          TabIndex        =   4
          Top             =   240
          Width           =   1215
       End
       Begin VB.TextBox txtScore 
          Height          =   495
          Index           =   14
          Left            =   5040
          TabIndex        =   13
          Top             =   1440
          Width           =   1215
       End
       Begin VB.TextBox txtScore 
          Height          =   495
          Index           =   13
          Left            =   3720
          TabIndex        =   12
          Top             =   1440
          Width           =   1215
       End
       Begin VB.TextBox txtScore 
          Height          =   495
          Index           =   12
          Left            =   2400
          TabIndex        =   11
          Top             =   1440
          Width           =   1215
       End
       Begin VB.TextBox txtScore 
          Height          =   495
          Index           =   11
          Left            =   1080
          TabIndex        =   10
          Top             =   1440
          Width           =   1215
       End
       Begin VB.TextBox txtScore 
          Height          =   495
          Index           =   10
          Left            =   6360
          TabIndex        =   9
          Top             =   840
          Width           =   1215
       End
       Begin VB.TextBox txtScore 
          Height          =   495
          Index           =   9
          Left            =   5040
          TabIndex        =   8
          Top             =   840
          Width           =   1215
       End
       Begin VB.TextBox txtScore 
          Height          =   495
          Index           =   8
          Left            =   3720
          TabIndex        =   7
          Top             =   840
          Width           =   1215
       End
       Begin VB.TextBox txtScore 
          Height          =   495
          Index           =   7
          Left            =   2400
          TabIndex        =   6
          Top             =   840
          Width           =   1215
       End
       Begin VB.TextBox txtScore 
          Height          =   495
          Index           =   6
          Left            =   1080
          TabIndex        =   5
          Top             =   840
          Width           =   1215
       End
       Begin VB.CommandButton cmdScores 
          Caption         =   "Set High and Low Scores"
          Height          =   495
          Left            =   600
          TabIndex        =   15
          Top             =   2880
          Width           =   2655
       End
       Begin VB.TextBox txtScore 
          Height          =   495
          Index           =   0
          Left            =   6360
          TabIndex        =   14
          Top             =   1440
          Width           =   1215
       End
       Begin VB.Label Label5 
          Caption         =   "Team 3"
          Height          =   495
          Left            =   120
          TabIndex        =   22
          Top             =   1440
          Width           =   855
       End
       Begin VB.Label Label4 
          Caption         =   "Team 1"
          Height          =   495
          Left            =   120
          TabIndex        =   21
          Top             =   240
          Width           =   855
       End
       Begin VB.Label Label3 
          Caption         =   "Team 2"
          Height          =   495
          Left            =   120
          TabIndex        =   20
          Top             =   840
          Width           =   855
       End
       Begin VB.Label lblLow 
          BorderStyle     =   1  'Fixed Single
          Height          =   495
          Left            =   5640
          TabIndex        =   19
          Top             =   2880
          Width           =   1935
       End
       Begin VB.Label lblHigh 
          BorderStyle     =   1  'Fixed Single
          Height          =   495
          Left            =   5640
          TabIndex        =   18
          Top             =   2280
          Width           =   1935
       End
       Begin VB.Label Label2 
          Caption         =   "Low Score is"
          Height          =   495
          Left            =   3600
          TabIndex        =   17
          Top             =   3000
          Width           =   1815
       End
       Begin VB.Label Label1 
          Caption         =   "High Score is"
          Height          =   495
          Left            =   3600
          TabIndex        =   16
          Top             =   2400
          Width           =   1815
       End
    End
    Attribute VB_Name = "Form1"
    Attribute VB_GlobalNameSpace = False
    Attribute VB_Creatable = False
    Attribute VB_PredeclaredId = True
    Attribute VB_Exposed = False
    Private Sub cmdScores_Click()
    Static score(0 To 14) As Integer
    Dim num As Integer
    Dim High As Integer
    Dim Low As Integer
    For num = 0 To 14
      score(num) = Val(txtScore(num).Text)
    Next num
       High = High_Score(score(), num - 1)
       lblHigh.Caption = Str$(High)
       Low = Low_Score(score(), num - 1)
       lblLow.Caption = Str$(Low)
    End Sub
    
    Private Function High_Score(score() As Integer, num As Integer)
    Dim max As Integer
    Dim High As Integer
    High = 0
    For max = 0 To num
       If (score(max) > High) Then
           High = score(max)
       End If
    Next max
    High_Score = High
      
    End Function
    
    Private Function Low_Score(score() As Integer, num As Integer)
    Dim min As Integer
    Dim Low As Integer
    Low = 1000
    For min = 0 To num
       If (score(min) < Low) Then
           Low = score(min)
       End If
    Next min
    Low_Score = Low
      
    End Function
    
    
  2. Start Visual Basic from Windows.
  3. Select Open Project from File Menu. If a dialog box appears asking you to save a file, click No.
  4. Browse to the Score folder, where you have saved the Score Project files, and select HighLow.vbp File and click the Open button.
  5. Choose Run, Start from the Visual Basic menu, or press F5. This runs the Visual Basic application.
  6. Enter some random numbers into the 15 Text Boxes given with the labels Team 1, Team 2 and Team 3.
  7. Click on the Command Button to find the Highest and Lowest score values and display them.
  8. Choose Options, Exit to exit the application and return to the Visual Basic design environment.
  9. Choose File, Remove Project to remove the Project from the design environment.

Exercise 1.5  Running the Race Pace Demo

  1. Create a Folder with the name Race on your Hard Drive. Copy the Race Project Source Code, Paste them into Notepad and save them into the Score folder with the Filename and extension specified:

    Project File: Race.vbp

    Type=Exe
    Form=..\Highlow\Race\Form1.frm
    Reference=*\G{00020430-0000-0000-C000-000000000046}#2.0#0#C:\WINDOWS\system32\stdole2.tlb#OLE Automation
    Startup="Form1"
    Command32=""
    Name="Project1"
    HelpContextID="0"
    CompatibleMode="0"
    MajorVer=1
    MinorVer=0
    RevisionVer=0
    AutoIncrementVer=0
    ServerSupportFiles=0
    VersionCompanyName="Home"
    CompilationType=0
    OptimizationType=0
    FavorPentiumPro(tm)=0
    CodeViewDebugInfo=0
    NoAliasing=0
    BoundsCheck=0
    OverflowCheck=0
    FlPointCheck=0
    FDIVCheck=0
    UnroundedFP=0
    StartMode=0
    Unattended=0
    ThreadPerObject=0
    MaxNumberOfThreads=1
    
    [MS Transaction Server]
    AutoRefresh=1
    
    

    Project File: Race.vbw

    Form1 = 136, 117, 583, 940, , 0, 0, 0, 0, 
    

    Project File: Form1.frm

    VERSION 5.00
    Begin VB.Form Form1 
       Caption         =   "Convert Race Result"
       ClientHeight    =   4155
       ClientLeft      =   2040
       ClientTop       =   1890
       ClientWidth     =   6585
       LinkTopic       =   "Form1"
       ScaleHeight     =   4155
       ScaleWidth      =   6585
       Begin VB.CommandButton cmdClear 
          Caption         =   "Clear"
          Height          =   495
          Left            =   840
          TabIndex        =   7
          Top             =   3240
          Width           =   1575
       End
       Begin VB.TextBox txtTime 
          Height          =   495
          Left            =   4680
          TabIndex        =   3
          Top             =   720
          Width           =   1575
       End
       Begin VB.Frame Frame1 
          Caption         =   "Click on one"
          Height          =   2175
          Left            =   480
          TabIndex        =   0
          Top             =   600
          Width           =   2415
          Begin VB.OptionButton Opt8K 
             Caption         =   "8 K Run/Walk"
             Height          =   255
             Left            =   360
             TabIndex        =   2
             Top             =   1440
             Width           =   1815
          End
          Begin VB.OptionButton Opt10K 
             Caption         =   "10 K Run/Walk"
             Height          =   255
             Left            =   360
             TabIndex        =   1
             Top             =   720
             Width           =   1815
          End
       End
       Begin VB.Label Label3 
          Caption         =   "Pace [in minutes per mile]"
          Height          =   855
          Left            =   3000
          TabIndex        =   6
          Top             =   1800
          Width           =   1335
       End
       Begin VB.Label lblPace 
          Height          =   495
          Left            =   4680
          TabIndex        =   5
          Top             =   1920
          Width           =   1575
       End
       Begin VB.Label Label1 
          Caption         =   "Enter Time in Minutes [i.e. 50.5] and press Enter"
          Height          =   855
          Left            =   3000
          TabIndex        =   4
          Top             =   720
          Width           =   1335
       End
    End
    Attribute VB_Name = "Form1"
    Attribute VB_GlobalNameSpace = False
    Attribute VB_Creatable = False
    Attribute VB_PredeclaredId = True
    Attribute VB_Exposed = False
    
    
    Private Sub cmdClear_Click()
       lblPace.Caption = ""
       txtTime.Text = ""
       txtTime.SetFocus
    End Sub
    
    Private Sub txtTime_KeyPress(KeyAscii As Integer)
    Dim result As Single
    Dim newtime As Single
    
       If KeyAscii = vbKeyReturn Then
          newtime = CSng(txtTime.Text)
          result = mph(newtime)
          lblPace.Caption = Str$(result)
       Else
          Exit Sub
       End If
    
    End Sub
    
    
    Function mph(newtime As Single) As Single
       If (Opt10K = True And newtime > 0) Then
          mph = CSng(newtime / 6.2)
       ElseIf (Opt8K = True And newtime > 0) Then
          mph = CSng(newtime / 5.1)
       End If
       txtTime.SetFocus
    
    End Function
    
  2. Start Visual Basic from Windows.
  3. Select Open Project from File Menu. If a dialog box appears asking you to save a file, click No.
  4. Browse to the Race folder, where you have saved the Race Project Files and select Race.vbp File and click Open button.
  5. Choose Run, Start from the Visual Basic menu, or press F5. This runs the Visual Basic application.
  6. Click on one of the Option Buttons to select it.
  7. Enter the value 48.45 into the Text Box.
  8. Press Enter key to calculate the pace of race in miles required per minute and display it in the label below the Text Box.
  9. Click on the Command Button to clear the values and try it on a different set of values
  10. Choose Options, Exit to exit the application and return to the Visual Basic design environment.
  11. Choose File, Remove Project to remove the Project from the design environment.

We will learn how to design these Forms and programs at a later stage.

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