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PC World 1999 April
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Vyzkuste
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LearnVB5
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Class 2
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Exercise2-2.frm
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.txt
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Visual Basic Form
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1998-04-10
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7KB
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231 lines
VERSION 5.00
Begin VB.Form frmAdd
BorderStyle = 1 'Fixed Single
Caption = "Flash Card Addition"
ClientHeight = 2955
ClientLeft = 2070
ClientTop = 1500
ClientWidth = 5370
LinkTopic = "Form1"
MaxButton = 0 'False
MinButton = 0 'False
PaletteMode = 1 'UseZOrder
ScaleHeight = 2955
ScaleWidth = 5370
Begin VB.CommandButton cmdNext
Caption = "&Next Problem"
Enabled = 0 'False
Height = 495
Left = 2280
TabIndex = 9
Top = 2400
Width = 1335
End
Begin VB.CommandButton cmdExit
Caption = "E&xit"
Height = 495
Left = 4440
TabIndex = 5
Top = 2400
Width = 855
End
Begin VB.TextBox txtAnswer
BeginProperty Font
Name = "Arial"
Size = 48
Charset = 0
Weight = 400
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
Height = 1200
Left = 3960
MaxLength = 2
TabIndex = 4
Top = 120
Width = 1215
End
Begin VB.Label lblMessage
Alignment = 2 'Center
BackColor = &H00FFFF00&
BorderStyle = 1 'Fixed Single
BeginProperty Font
Name = "MS Sans Serif"
Size = 24
Charset = 0
Weight = 700
Underline = 0 'False
Italic = -1 'True
Strikethrough = 0 'False
EndProperty
Height = 615
Left = 1560
TabIndex = 8
Top = 1560
Width = 3735
End
Begin VB.Label lblScore
Alignment = 2 'Center
BackColor = &H0000FFFF&
BorderStyle = 1 'Fixed Single
Caption = "0"
BeginProperty Font
Name = "Times New Roman"
Size = 36
Charset = 0
Weight = 700
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
Height = 855
Left = 120
TabIndex = 7
Top = 1920
Width = 1215
End
Begin VB.Label Label1
Alignment = 2 'Center
Caption = "Score:"
BeginProperty Font
Name = "MS Sans Serif"
Size = 18
Charset = 0
Weight = 400
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
Height = 375
Left = 120
TabIndex = 6
Top = 1440
Width = 1095
End
Begin VB.Label Label4
Alignment = 2 'Center
Caption = "="
BeginProperty Font
Name = "Arial"
Size = 48
Charset = 0
Weight = 400
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
Height = 975
Left = 3240
TabIndex = 3
Top = 120
Width = 615
End
Begin VB.Label lblNum2
Alignment = 2 'Center
BeginProperty Font
Name = "Arial"
Size = 48
Charset = 0
Weight = 400
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
Height = 1095
Left = 2040
TabIndex = 2
Top = 120
Width = 1095
End
Begin VB.Label Label2
Alignment = 2 'Center
Caption = "+"
BeginProperty Font
Name = "Arial"
Size = 48
Charset = 0
Weight = 400
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
Height = 975
Left = 1320
TabIndex = 1
Top = 120
Width = 615
End
Begin VB.Label lblNum1
Alignment = 2 'Center
BeginProperty Font
Name = "Arial"
Size = 48
Charset = 0
Weight = 400
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
Height = 1095
Left = 120
TabIndex = 0
Top = 120
Width = 1095
End
Attribute VB_Name = "frmAdd"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit
Dim Sum As Integer
Dim NumProb As Integer, NumRight As Integer
Private Sub cmdExit_Click()
End Sub
Private Sub cmdNext_Click()
'Generate next addition problem
Dim Number1 As Integer
Dim Number2 As Integer
txtAnswer.Text = ""
lblMessage.Caption = ""
NumProb = NumProb + 1
'Generate random numbers for addends
Number1 = Int(Rnd * 21)
Number2 = Int(Rnd * 21)
lblNum1.Caption = Format(Number1, "#0")
lblNum2.Caption = Format(Number2, "#0")
'Find sum
Sum = Number1 + Number2
cmdNext.Enabled = False
txtAnswer.SetFocus
End Sub
Private Sub Form_Activate()
Call cmdNext_Click
End Sub
Private Sub Form_Load()
Randomize Timer
NumProb = 0
NumRight = 0
End Sub
Private Sub txtAnswer_KeyPress(KeyAscii As Integer)
Dim Ans As Integer
'Check for number only input and for return key
If (KeyAscii >= vbKey0 And KeyAscii <= vbKey9) Or KeyAscii = vbKeyBack Then
Exit Sub
ElseIf KeyAscii = vbKeyReturn Then
'Check answer
Ans = Val(txtAnswer.Text)
If Ans = Sum Then
NumRight = NumRight + 1
lblMessage.Caption = "That's correct!"
Else
lblMessage.Caption = "Answer is " + Format(Sum, "#0")
End If
lblScore.Caption = Format(100 * NumRight / NumProb, "##0")
cmdNext.Enabled = True
cmdNext.SetFocus
KeyAscii = 0
End If
End Sub