form5.frm

基于VB语言编写的热力学性质计算的应用软件（数据库操作）

VERSION 5.00
Begin VB.Form Form5 
   AutoRedraw      =   -1  'True
   BackColor       =   &H00C0C0C0&
   Caption         =   "混合流体程序计算"
   ClientHeight    =   3030
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   4380
   LinkTopic       =   "Form5"
   MaxButton       =   0   'False
   MinButton       =   0   'False
   ScaleHeight     =   3030
   ScaleWidth      =   4380
   StartUpPosition =   2  '屏幕中心
   Begin VB.Frame Frame1 
      BackColor       =   &H00C0C0C0&
      Caption         =   "请选择已知数据"
      BeginProperty Font 
         Name            =   "楷体_GB2312"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   1575
      Left            =   1920
      TabIndex        =   7
      Top             =   720
      Width           =   2175
      Begin VB.OptionButton Option3 
         BackColor       =   &H00C0C0C0&
         Caption         =   "已知P与T"
         Height          =   255
         Left            =   360
         TabIndex        =   10
         Top             =   1200
         Width           =   1215
      End
      Begin VB.OptionButton Option2 
         BackColor       =   &H00C0C0C0&
         Caption         =   "已知P与V"
         Height          =   375
         Left            =   360
         TabIndex        =   9
         Top             =   720
         Width           =   1575
      End
      Begin VB.OptionButton Option1 
         BackColor       =   &H00C0C0C0&
         Caption         =   "已知V与T"
         Height          =   255
         Left            =   360
         TabIndex        =   8
         Top             =   360
         Width           =   1335
      End
   End
   Begin VB.ComboBox Combo2 
      BackColor       =   &H80000018&
      Height          =   300
      Left            =   240
      TabIndex        =   3
      Top             =   1920
      Width           =   1335
   End
   Begin VB.ComboBox Combo1 
      BackColor       =   &H80000018&
      Height          =   300
      Left            =   240
      TabIndex        =   2
      Top             =   1080
      Width           =   1335
   End
   Begin VB.CommandButton Command2 
      BackColor       =   &H00FFC0C0&
      Caption         =   "返回"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   400
      Left            =   2400
      Style           =   1  'Graphical
      TabIndex        =   1
      Top             =   2520
      Width           =   1000
   End
   Begin VB.CommandButton Command1 
      BackColor       =   &H00FFC0C0&
      Caption         =   "确定"
      Default         =   -1  'True
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   400
      Left            =   600
      Style           =   1  'Graphical
      TabIndex        =   0
      Top             =   2520
      Width           =   1100
   End
   Begin VB.Label Label3 
      AutoSize        =   -1  'True
      BackStyle       =   0  'Transparent
      Caption         =   "流体二"
      BeginProperty Font 
         Name            =   "楷体_GB2312"
         Size            =   10.5
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   210
      Left            =   120
      TabIndex        =   6
      Top             =   1560
      Width           =   630
   End
   Begin VB.Label Label2 
      AutoSize        =   -1  'True
      BackStyle       =   0  'Transparent
      Caption         =   "流体一"
      BeginProperty Font 
         Name            =   "楷体_GB2312"
         Size            =   10.5
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   210
      Left            =   120
      TabIndex        =   5
      Top             =   720
      Width           =   630
   End
   Begin VB.Label Label1 
      AutoSize        =   -1  'True
      Caption         =   "物质及已知数据的选择"
      BeginProperty Font 
         Name            =   "黑体"
         Size            =   15.75
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   315
      Left            =   600
      TabIndex        =   4
      Top             =   120
      Width           =   3150
   End
End
Attribute VB_Name = "Form5"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private Sub Command1_Click()
If Form5.Combo1.Text = "" Or Form5.Combo2.Text = "" Or (Form5.Option1 = False And Form5.Option2 = False And Form5.Option3 = False) Then
    MsgBox "对不起你还未正确选择！", vbOKCancel + 48, "程序"
ElseIf Form5.Combo1.Text = Form5.Combo2.Text Then
      MsgBox "对不起你选择的是同一物质！请正确选择！", vbOKOnly + 48, "程序"
Else
   Do While 1
     k = Val(InputBox("请输入混合物经验" + Chr(13) + Chr(10) + "二元相互作用参数k", "数据输入"))
     If k >= 1 Or k < 0 Then
        MsgBox "对不起k应当小于1且大于等于零！" + Chr(13) + Chr(10) + "请重新输入！", vbOKCancel + 48, "程序"
     Else
        Exit Do
     End If
   Loop
  Do While 1
     y1 = Val(InputBox("请输入混合物中" + Chr(13) + Chr(10) + Form5.Combo1.Text + "的摩尔含量y1", "数据输入"))
     If y1 >= 1 Or y1 <= 0 Then
       MsgBox "对不起y1应当小于1且大于零！" + Chr(13) + Chr(10) + "请重新输入！", vbOKCancel + 48, "程序"
     Else
       Exit Do
     End If
  Loop
   If Form5.Option1.Value = True Then
      Do While 1
         V = Val(InputBox("请输入体积" + Chr(13) + Chr(10) + "单位(m3/mol)", "数据输入"))
         If V <= 0 Then
            MsgBox "对不起体积应当大于0！" + Chr(13) + Chr(10) + "请重新输入！", vbOKCancel + 48, "程序"
         Else
            Exit Do
         End If
      Loop
      Do While 1
         t = Val(InputBox("请输入温度" + Chr(13) + Chr(10) + "单位(K)", "数据输入"))
         If t <= 0 Then
            MsgBox "对不起温度应当大于0！" + Chr(13) + Chr(10) + "请重新输入！", vbOKCancel + 48, "程序"
         Else
            Exit Do
         End If
      Loop
      STR3 = "已知条件：" + "体积：" + Str(V) + "m3/mol" + "   " + "温度：" + Str(t) + "K" + Chr(13) + Chr(10)
   End If
   If Form5.Option2.Value = True Then
      Do While 1
         P = Val(InputBox("请输入压强" + Chr(13) + Chr(10) + "单位(Pa)", "数据输入"))
         If P <= 0 Then
            MsgBox "对不起压强应当大于0！" + Chr(13) + Chr(10) + "请重新输入！", vbOKCancel + 48, "程序"
         Else
            Exit Do
         End If
      Loop
      Do While 1
         V = Val(InputBox("请输入体积" + Chr(13) + Chr(10) + "单位(m3/mol)", "数据输入"))
         If V <= 0 Then
            MsgBox "对不起体积应当大于0！" + Chr(13) + Chr(10) + "请重新输入！", vbOKCancel + 48, "程序"
         Else
            Exit Do
         End If
      Loop
      STR3 = "已知条件：" + "压强：" + Str(P) + "Pa" + "   " + "体积：" + Str(V) + "m3/mol" + Chr(13) + Chr(10)
    End If
   If Form5.Option3.Value = True Then
      Do While 1
         P = Val(InputBox("请输入压强" + Chr(13) + Chr(10) + "单位(Pa)", "数据输入"))
         If P <= 0 Then
            MsgBox "对不起压强应当大于0！" + Chr(13) + Chr(10) + "请重新输入！", vbOKCancel + 48, "程序"
         Else
            Exit Do
         End If
      Loop
      Do While 1
         t = Val(InputBox("请输入温度" + Chr(13) + Chr(10) + "单位(K)", "数据输入"))
         If t <= 0 Then
            MsgBox "对不起温度应当大于0！" + Chr(13) + Chr(10) + "请重新输入！", vbOKCancel + 48, "程序"
         Else
            Exit Do
         End If
      Loop
      STR3 = "已知条件：" + "压强：" + Str(P) + "Pa" + "   " + "温度：" + Str(t) + "K" + Chr(13) + Chr(10)
   End If
   STR3 = STR3 + "          " + Form5.Combo1.Text + "的摩尔组分为：" + Str(y1)
   
   myRecord.Index = "物质中文名"
   myRecord.Seek "=", Combo1.Text
   Pc1 = myRecord.Fields("临界压力Pc").Value
   Tc1 = myRecord.Fields("临界温度Tc").Value
   Vc1 = myRecord.Fields("临界体积Vc").Value
   Zc1 = myRecord.Fields("临界压缩因子Zc").Value
   w1 = myRecord.Fields("偏心因子wc").Value
   myRecord.Seek "=", Combo2.Text
   Pc2 = myRecord.Fields("临界压力Pc").Value
   Tc2 = myRecord.Fields("临界温度Tc").Value
   Vc2 = myRecord.Fields("临界体积Vc").Value
   Zc2 = myRecord.Fields("临界压缩因子Zc").Value
   w2 = myRecord.Fields("偏心因子wc").Value
   
   
 Form5.Hide
 Form6.Show
End If
End Sub
Private Sub Command2_Click()
Unload Me
Form1.Show
End Sub

Private Sub Form_Load()
Set myWork = DBEngine.Workspaces(0)
Set myData = myWork.OpenDatabase(App.Path & "\物质参数.mdb", , ";")
Set myRecord = myData.OpenRecordset("物性参数数据")

Combo1.Clear
Combo2.Clear
Do While myRecord.EOF = False
  Combo1.AddItem myRecord.Fields("物质中文名").Value
  Combo2.AddItem myRecord.Fields("物质中文名").Value
  myRecord.MoveNext
Loop

End Sub