【文件属性】：
文件名称：模拟监控程序（含代码）
文件大小：4KB
文件格式：RAR
更新时间：2013-08-06 17:01:42
vb课程设计
Option Explicit
Const Pi = 3.1415926
Public b As Integer
Dim p() As Single, q() As Single
Private Sub Timer1_Timer()
Text1 = Rnd * 201 + 100 '生成随机数
Text2 = Rnd * 101 + 20
b = b + 1
ReDim Preserve p(b) '定义两个一维数组用以保存生成的随机树
ReDim Preserve q(b)
p(b) = Val(Text1)
q(b) = Val(Text2)
Shpblue.Height = Text1 * 7 '改变蓝色控件的高度模拟反应釜内液面变化
Shpblue.Top = 2200 + 5880 - Text1 * 7
If b Mod 50 = 0 And b >= 50 Then '在图片框控件中画出对应的曲线
Picture1.Cls
Else
Picture1.Line (80 * (b Mod 50 - 1), 3000 - p(b - 1) * 10)-(80 * (b Mod 50), 3000 - p(b) * 10), &HFF
Picture1.Line (80 * (b Mod 50 - 1), 3000 - q(b - 1) * 10)-(80 * (b Mod 50), 3000 - q(b) * 10), &HFF0000
End If
End Sub
Private Sub Text1_Change()
Dim a As String * 20, c As String * 20
Open "D:\bjz.txt" For Input As #1
Line Input #1, a
Line Input #1, c
If Val(Text1.Text) > a Then
Label3.Caption = "液位超上限"
Else: Label3.Caption = ""
End If
Close #1
End Sub
Private Sub Text2_Change()
Dim e As String * 20, f As String * 20
Open "D:\bjz.TXT" For Input As #1
Line Input #1, e
Line Input #1, f
If Val(Text2.Text) > f Then
Label4.Caption = "温度超上限"
Else: Label4.Caption = ""
End If
Close #1
End Sub
Private Sub cmd1_Click()
Form2.Show '窗体2出现
End Sub
Private Sub cmd2_Click()
Dim m As Integer
Open "d:\data.txt" For Output As #2 '保存数据
Print #2, "时间(s), 温度(℃), 液体(cm)"
Close #2
For m = 1 To b
Open "D:\data.txt" For Append As #3
Write #3, m, p(m), q(m)
Close #3
Next
End Sub
Private Sub cmd3_Click()
End '结束程序
End Sub
Private Sub Form_Activate()
Circle (3340, 8080), 700, vbBlue, -Pi, -2 * Pi '
Circle (3340, 5880), 700, vbRed, -2 * Pi, -Pi
End Sub
【文件预览】：
VB
----bjz.txt(14B)
----Form1.frm(12KB)
----工程1.vbp(657B)
----MSSCCPRJ.SCC(190B)
----Form2.frm(2KB)
----工程1.vbw(106B)