signalsource.frm

采用VB编写的一个电路分析系统

VERSION 5.00
Begin VB.Form signalsource 
   Caption         =   "函数信号发生器"
   ClientHeight    =   1890
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   3015
   Icon            =   "signalsource.frx":0000
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   ScaleHeight     =   1890
   ScaleWidth      =   3015
   ShowInTaskbar   =   0   'False
   Visible         =   0   'False
   Begin VB.PictureBox Picture1 
      Appearance      =   0  'Flat
      BackColor       =   &H80000005&
      ForeColor       =   &H80000008&
      Height          =   495
      Left            =   0
      ScaleHeight     =   465
      ScaleWidth      =   2985
      TabIndex        =   9
      Top             =   0
      Width           =   3015
      Begin VB.Image Image1 
         Height          =   480
         Index           =   2
         Left            =   480
         Picture         =   "signalsource.frx":0CCA
         Top             =   0
         Width           =   1965
      End
      Begin VB.Image Image1 
         Height          =   480
         Index           =   1
         Left            =   480
         Picture         =   "signalsource.frx":3E8C
         Top             =   0
         Width           =   1965
      End
      Begin VB.Image Image1 
         Height          =   480
         Index           =   0
         Left            =   480
         Picture         =   "signalsource.frx":704E
         Top             =   0
         Width           =   1965
      End
   End
   Begin VB.TextBox Text3 
      Height          =   270
      Left            =   720
      TabIndex        =   8
      Text            =   "0"
      Top             =   1560
      Width           =   2055
   End
   Begin VB.TextBox Text2 
      Height          =   270
      Left            =   720
      TabIndex        =   6
      Text            =   "1"
      Top             =   1200
      Width           =   2055
   End
   Begin VB.TextBox Text1 
      Height          =   270
      Left            =   720
      TabIndex        =   4
      Text            =   "1000"
      Top             =   840
      Width           =   2055
   End
   Begin VB.CommandButton Command1 
      Caption         =   "三角波"
      Height          =   255
      Index           =   2
      Left            =   1920
      TabIndex        =   2
      Top             =   480
      Width           =   1095
   End
   Begin VB.CommandButton Command1 
      Caption         =   "方波"
      Height          =   255
      Index           =   1
      Left            =   960
      TabIndex        =   1
      Top             =   480
      Width           =   975
   End
   Begin VB.CommandButton Command1 
      Caption         =   "正弦波"
      Height          =   255
      Index           =   0
      Left            =   0
      TabIndex        =   0
      Top             =   480
      Width           =   975
   End
   Begin VB.Label Label3 
      Alignment       =   2  'Center
      Caption         =   "相位"
      Height          =   255
      Left            =   0
      TabIndex        =   7
      Top             =   1560
      Width           =   855
   End
   Begin VB.Label Label2 
      Alignment       =   2  'Center
      Caption         =   "幅值"
      Height          =   255
      Left            =   120
      TabIndex        =   5
      Top             =   1200
      Width           =   615
   End
   Begin VB.Label Label1 
      Alignment       =   2  'Center
      Caption         =   "频率"
      Height          =   255
      Left            =   120
      TabIndex        =   3
      Top             =   840
      Width           =   615
   End
End
Attribute VB_Name = "signalsource"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit
Private Declare Function SetWindowPos Lib "user32" (ByVal hwnd As Long, ByVal hWndInsertAfter As Long, ByVal X As Long, ByVal Y As Long, ByVal cx As Long, ByVal cy As Long, ByVal wFlags As Long) As Long
Dim retvalue As Long


Public Sub Command1_Click(Index As Integer)
Dim k As Integer
For k = 0 To 2
 If k = Index Then
  Image1(k).Visible = True
 Else
  Image1(k).Visible = False
 End If
Next k
multisignal.stype = Index
If Index = 0 Then
  multisignal.times = 1
ElseIf Index = 1 Then
  multisignal.times = 15
Else
  multisignal.times = 15
End If
End Sub

Private Sub Form_Load()
 retvalue = SetWindowPos(Me.hwnd, -1, Me.CurrentX, Me.CurrentY, 208, 150, &H40)
    '置中窗体
Me.Move (Screen.Width - Me.Width) / 2, (Screen.Height - Me.Height) / 2

multisignal.arc = 0
multisignal.frequency = 1000
multisignal.volt = 1
multisignal.stype = 0
multisignal.times = 1
End Sub

Private Sub Form_Unload(cancel As Integer)
If formstate = 1 Then
 cancel = 0
 Else
cancel = 1
signalsource.Hide
End If
End Sub

Private Sub Text1_Change()
If CSng(Text1.Text) > 0 Then
multisignal.frequency = CSng(Text1.Text)
Else
MsgBox "请正确输入频率！"
End If
End Sub

Private Sub Text2_Change()
If CSng(Text2.Text) > 0 Then
multisignal.volt = CSng(Text2.Text)
Else
MsgBox "请正确输入电压值！"
End If
End Sub

Private Sub Text3_Change()
multisignal.frequency = CSng(Text1.Text)
End Sub