原码.txt

函数绘图程序 VB 编写 可以绘制初高中 函数图像 支持颜色

Private Sub Option9_Click()
If Option9.Value = True Then
Text6.Text = 200
Text7.Text = 200
Dim X, zuox, zuoy, jingdu, beijing, zuotx, cuxi
Open "c:\hs.ini" For Input As #1
Input #1, zuox, zuoy, jingdu, beijing, zuo, tx, cuxi
Close #1
zuox = 200: zuoy = 200
Open "c:\hs.ini" For Output As #1
Write #1, zuox, zuoy, jingdu, beijing, zuo, tx, cuxi
Close #1
Picture1.AutoRedraw = True
Picture1.Line (0, 0)-(5000, 5000), beijing, BF
Picture1.Line (0, 2500)-(5000, 2500), zuo
Picture1.Line (2500, 0)-(2500, 5000), zuo
Picture1.Line (5000, 2500)-(4900, 2400), zuo
Picture1.Line (5000, 2500)-(4900, 2610), zuo
Picture1.Line (2500, 0)-(2400, 100), zuo
Picture1.Line (2500, 0)-(2620, 100), zuo
For X = 2500 To 5000 Step zuox
Picture1.Line (X, 2470)-(X, 2500), zuo
Next X
For X = 2500 To 0 Step -1 * zuox
Picture1.Line (X, 2470)-(X, 2500), zuo
Next X
For X = 2500 To 5000 Step zuoy
Picture1.Line (2500, X)-(2550, X), zuo
Next X
For X = 2500 To 0 Step -1 * zuoy
Picture1.Line (2500, X)-(2550, X), zuo
Next X
Picture1.AutoRedraw = False
End If
End Sub

Private Sub Picture1_MouseMove(Button As Integer, Shift As Integer, X As Single, Y As Single)
Open "c:\hs.ini" For Input As #1
Input #1, zuox, zuoy
Close #1
Dim currx, curry, xx, yy
currx = X
curry = Y
xx = Int(((currx - 2500) / zuox) + 0.5)
yy = Int((((curry - 2500) * -1) / zuoy) + 0.5)
Label31.Caption = "鼠标坐标：(" & Format$(Int(((currx - 2500) / zuox) + 0.5), "#") & "," & Format$(Int((((curry - 2500) * -1) / zuoy) + 0.5), "#") & ")"
If xx = 0 Then Label31.Caption = "鼠标坐标：(0" & "," & Format$(Int((((curry - 2500) * -1) / zuoy) + 0.5), "#") & ")"
If yy = 0 Then Label31.Caption = "鼠标坐标：(" & Format$(Int(((currx - 2500) / zuox) + 0.5), "#") & "," & "0)"
If xx = 0 And yy = 0 Then Label31.Caption = "鼠标坐标：(0,0)"
If currx >= 4950 Or curry >= 4950 Or currx <= 50 Or curry <= 50 Then Label31.Caption = ""


End Sub

Private Sub Picture3_Click()
Dim X, zuox, zuoy, jingdu, beijing, zuotx, cuxi
CommonDialog1.Action = 3
Open "c:\hs.ini" For Input As #1
Input #1, zuox, zuoy, jingdu, beijing, zuo, tx, cuxi
Close #1
beijing = CommonDialog1.Color
Open "c:\hs.ini" For Output As #1
Write #1, zuox, zuoy, jingdu, beijing, zuo, tx, cuxi
Close #1
Picture1.AutoRedraw = True
Picture1.Line (0, 0)-(5000, 5000), beijing, BF
Picture1.Line (0, 2500)-(5000, 2500), zuo
Picture1.Line (2500, 0)-(2500, 5000), zuo
Picture1.Line (5000, 2500)-(4900, 2400), zuo
Picture1.Line (5000, 2500)-(4900, 2610), zuo
Picture1.Line (2500, 0)-(2400, 100), zuo
Picture1.Line (2500, 0)-(2620, 100), zuo
For X = 2500 To 5000 Step zuox
Picture1.Line (X, 2470)-(X, 2500), zuo
Next X
For X = 2500 To 0 Step -1 * zuox
Picture1.Line (X, 2470)-(X, 2500), zuo
Next X
For X = 2500 To 5000 Step zuoy
Picture1.Line (2500, X)-(2550, X), zuo
Next X
For X = 2500 To 0 Step -1 * zuoy
Picture1.Line (2500, X)-(2550, X), zuo
Next X
Picture1.AutoRedraw = False
Picture3.Line (0, 0)-(300, 300), beijing, BF
End Sub

Private Sub Picture4_Click()
Dim X, zuox, zuoy, jingdu, beijing, zuotx, cuxi
CommonDialog1.Action = 3
Open "c:\hs.ini" For Input As #1
Input #1, zuox, zuoy, jingdu, beijing, zuo, tx, cuxi
Close #1
zuo = CommonDialog1.Color
Open "c:\hs.ini" For Output As #1
Write #1, zuox, zuoy, jingdu, beijing, zuo, tx, cuxi
Close #1
Picture1.AutoRedraw = True
Picture1.Line (0, 0)-(5000, 5000), beijing, BF
Picture1.Line (0, 2500)-(5000, 2500), zuo
Picture1.Line (2500, 0)-(2500, 5000), zuo
Picture1.Line (5000, 2500)-(4900, 2400), zuo
Picture1.Line (5000, 2500)-(4900, 2610), zuo
Picture1.Line (2500, 0)-(2400, 100), zuo
Picture1.Line (2500, 0)-(2620, 100), zuo
For X = 2500 To 5000 Step zuox
Picture1.Line (X, 2470)-(X, 2500), zuo
Next X
For X = 2500 To 0 Step -1 * zuox
Picture1.Line (X, 2470)-(X, 2500), zuo
Next X
For X = 2500 To 5000 Step zuoy
Picture1.Line (2500, X)-(2550, X), zuo
Next X
For X = 2500 To 0 Step -1 * zuoy
Picture1.Line (2500, X)-(2550, X), zuo
Next X
Picture1.AutoRedraw = False
Picture4.Line (0, 0)-(300, 300), zuo, BF
End Sub

Private Sub Picture5_Click()
Dim X, zuox, zuoy, jingdu, beijing, zuotx, cuxi
CommonDialog1.Action = 3
Open "c:\hs.ini" For Input As #1
Input #1, zuox, zuoy, jingdu, beijing, zuo, tx, cuxi
Close #1
tx = CommonDialog1.Color
Open "c:\hs.ini" For Output As #1
Write #1, zuox, zuoy, jingdu, beijing, zuo, tx, cuxi
Close #1
Picture5.Line (0, 0)-(300, 300), tx, BF
End Sub

Private Sub save_Click()
CommonDialog1.Filter = "BMP|*.bmp"
CommonDialog1.Flags = &H2

CommonDialog1.DefaultExt = "bmp"
CommonDialog1.Action = 2
If CommonDialog1.CancelError = False Then
SavePicture Picture1.Image, CommonDialog1.FileName

End If
End Sub

Private Sub sent_Click()
Clipboard.clear
Clipboard.SetData Picture1.Image, vbCFBitmap
MsgBox "图像已发送到剪贴板，请用其他程序调用！"

End Sub

Private Sub Text6_Change()
If Text6.Text = "" Then Text6.Text = 100
If Text7.Text = "" Then Text7.Text = 100
If IsNumeric(Text6.Text) And IsNumeric(Text7.Text) Then
If 1 = 1 Then
Option11.Value = True
If Option11.Value = True Then
Dim a, b, X, zuox, zuoy, jingdu, beijing, zuotx, cuxi
If Text6.Text = "" Then Text6.Text = 1
If Text7.Text = "" Then Text7.Text = 1
a = Text6.Text
b = Text7.Text
If a < 1 Then a = 1: Text6.Text = 1
If b < 1 Then b = 1: Text7.Text = 1
Open "c:\hs.ini" For Input As #1
Input #1, zuox, zuoy, jingdu, beijing, zuo, tx, cuxi
Close #1
zuox = a: zuoy = b
Open "c:\hs.ini" For Output As #1
Write #1, zuox, zuoy, jingdu, beijing, zuo, tx, cuxi
Close #1
Picture1.AutoRedraw = True
Picture1.Line (0, 0)-(5000, 5000), beijing, BF
Picture1.Line (0, 2500)-(5000, 2500), zuo
Picture1.Line (2500, 0)-(2500, 5000), zuo
Picture1.Line (5000, 2500)-(4900, 2400), zuo
Picture1.Line (5000, 2500)-(4900, 2610), zuo
Picture1.Line (2500, 0)-(2400, 100), zuo
Picture1.Line (2500, 0)-(2620, 100), zuo
For X = 2500 To 5000 Step zuox
Picture1.Line (X, 2470)-(X, 2500), zuo
Next X
For X = 2500 To 0 Step -1 * zuox
Picture1.Line (X, 2470)-(X, 2500), zuo
Next X
For X = 2500 To 5000 Step zuoy
Picture1.Line (2500, X)-(2550, X), zuo
Next X
For X = 2500 To 0 Step -1 * zuoy
Picture1.Line (2500, X)-(2550, X), zuo
Next X
Picture1.AutoRedraw = False
End If
End If
Else
Text6.Text = 1
End If
End Sub

Private Sub Text7_Change()
If Text6.Text = "" Then Text6.Text = 100
If Text7.Text = "" Then Text7.Text = 100
If IsNumeric(Text6.Text) And IsNumeric(Text7.Text) Then
If 1 = 1 Then
Option11.Value = True
If Option11.Value = True Then

Dim a, b, X, zuox, zuoy, jingdu, beijing, zuotx, cuxi
If Text6.Text = "" Then Text6.Text = 1
If Text7.Text = "" Then Text7.Text = 1
a = Text6.Text
b = Text7.Text
If a < 1 Then a = 1: Text6.Text = 1
If b < 1 Then b = 1: Text7.Text = 1
Open "c:\hs.ini" For Input As #1
Input #1, zuox, zuoy, jingdu, beijing, zuo, tx, cuxi
Close #1
zuox = a: zuoy = b
Open "c:\hs.ini" For Output As #1
Write #1, zuox, zuoy, jingdu, beijing, zuo, tx, cuxi
Close #1
Picture1.AutoRedraw = True
Picture1.Line (0, 0)-(5000, 5000), beijing, BF
Picture1.Line (0, 2500)-(5000, 2500), zuo
Picture1.Line (2500, 0)-(2500, 5000), zuo
Picture1.Line (5000, 2500)-(4900, 2400), zuo
Picture1.Line (5000, 2500)-(4900, 2610), zuo
Picture1.Line (2500, 0)-(2400, 100), zuo
Picture1.Line (2500, 0)-(2620, 100), zuo
For X = 2500 To 5000 Step zuox
Picture1.Line (X, 2470)-(X, 2500), zuo
Next X
For X = 2500 To 0 Step -1 * zuox
Picture1.Line (X, 2470)-(X, 2500), zuo
Next X
For X = 2500 To 5000 Step zuoy
Picture1.Line (2500, X)-(2550, X), zuo
Next X
For X = 2500 To 0 Step -1 * zuoy
Picture1.Line (2500, X)-(2550, X), zuo
Next X
Picture1.AutoRedraw = False
End If
End If
Else
Text7.Text = 1
End If
End Sub

Private Sub Timer1_Timer()
Label33.Caption = Now
End Sub

Option Explicit

' 注册表关键字安全选项...
Const READ_CONTROL = &H20000
Const KEY_QUERY_VALUE = &H1
Const KEY_SET_VALUE = &H2
Const KEY_CREATE_SUB_KEY = &H4
Const KEY_ENUMERATE_SUB_KEYS = &H8
Const KEY_NOTIFY = &H10
Const KEY_CREATE_LINK = &H20
Const KEY_ALL_ACCESS = KEY_QUERY_VALUE + KEY_SET_VALUE + _
                       KEY_CREATE_SUB_KEY + KEY_ENUMERATE_SUB_KEYS + _
                       KEY_NOTIFY + KEY_CREATE_LINK + READ_CONTROL
                     
' 注册表关键字 ROOT 类型...
Const HKEY_LOCAL_MACHINE = &H80000002
Const ERROR_SUCCESS = 0
Const REG_SZ = 1                         ' 独立的空的终结字符串
Const REG_DWORD = 4                      ' 32位数字

Const gREGKEYSYSINFOLOC = "SOFTWARE\Microsoft\Shared Tools Location"
Const gREGVALSYSINFOLOC = "MSINFO"
Const gREGKEYSYSINFO = "SOFTWARE\Microsoft\Shared Tools\MSINFO"
Const gREGVALSYSINFO = "PATH"

Private Declare Function RegOpenKeyEx Lib "advapi32" Alias "RegOpenKeyExA" (ByVal hKey As Long, ByVal lpSubKey As String, ByVal ulOptions As Long, ByVal samDesired As Long, ByRef phkResult As Long) As Long
Private Declare Function RegQueryValueEx Lib "advapi32" Alias "RegQueryValueExA" (ByVal hKey As Long, ByVal lpValueName As String, ByVal lpReserved As Long, ByRef lpType As Long, ByVal lpData As String, ByRef lpcbData As Long) As Long
Private Declare Function RegCloseKey Lib "advapi32" (ByVal hKey As Long) As Long


Private Sub cmdSysInfo_Click()
  Call StartSysInfo
End Sub

Private Sub cmdOK_Click()
  Unload Me
End Sub

Private Sub Form_Load()
    Me.Caption = "关于 " & App.Title
    lblVersion.Caption = "版本 " & App.Major & "." & App.Minor & "." & App.Revision
    lblTitle.Caption = App.Title
End Sub

Public Sub StartSysInfo()
    On Error GoTo SysInfoErr
  
    Dim rc As Long
    Dim SysInfoPath As String
    
    ' 试图从注册表中获得系统信息程序的路径及名称...
    If GetKeyValue(HKEY_LOCAL_MACHINE, gREGKEYSYSINFO, gREGVALSYSINFO, SysInfoPath) Then
    ' 试图仅从注册表中获得系统信息程序的路径...
    ElseIf GetKeyValue(HKEY_LOCAL_MACHINE, gREGKEYSYSINFOLOC, gREGVALSYSINFOLOC, SysInfoPath) Then
        ' 已知32位文件版本的有效位置
        If (Dir(SysInfoPath & "\MSINFO32.EXE") <> "") Then
            SysInfoPath = SysInfoPath & "\MSINFO32.EXE"
            
        ' 错误 - 文件不能被找到...
        Else
            GoTo SysInfoErr
        End If
    ' 错误 - 注册表相应条目不能被找到...
    Else
        GoTo SysInfoErr
    End If
    
    Call Shell(SysInfoPath, vbNormalFocus)
    
    Exit Sub
SysInfoErr:
    MsgBox "此时系统信息不可用", vbOKOnly
End Sub

Public Function GetKeyValue(KeyRoot As Long, KeyName As String, SubKeyRef As String, ByRef KeyVal As String) As Boolean
    Dim i As Long                                           ' 循环计数器
    Dim rc As Long                                          ' 返回代码
    Dim hKey As Long                                        ' 打开的注册表关键字句柄
    Dim hDepth As Long                                      '
    Dim KeyValType As Long                                  ' 注册表关键字数据类型
    Dim tmpVal As String                                    ' 注册表关键字值的临时存储器
    Dim KeyValSize As Long                                  ' 注册表关键自变量的尺寸
    '------------------------------------------------------------
    ' 打开 {HKEY_LOCAL_MACHINE...} 下的 RegKey
    '------------------------------------------------------------
    rc = RegOpenKeyEx(KeyRoot, KeyName, 0, KEY_ALL_ACCESS, hKey) ' 打开注册表关键字
    
    If (rc <> ERROR_SUCCESS) Then GoTo GetKeyError          ' 处理错误...
    
    tmpVal = String$(1024, 0)                             ' 分配变量空间
    KeyValSize = 1024                                       ' 标记变量尺寸
    
    '------------------------------------------------------------
    ' 检索注册表关键字的值...
    '------------------------------------------------------------
    rc = RegQueryValueEx(hKey, SubKeyRef, 0, _
                         KeyValType, tmpVal, KeyValSize)    ' 获得/创建关键字值
                        
    If (rc <> ERROR_SUCCESS) Then GoTo GetKeyError          ' 处理错误
    
    If (Asc(Mid(tmpVal, KeyValSize, 1)) = 0) Then           ' Win95 外接程序空终结字符串...
        tmpVal = Left(tmpVal, KeyValSize - 1)               ' Null 被找到,从字符串中分离出来
    Else                                                    ' WinNT 没有空终结字符串...
        tmpVal = Left(tmpVal, KeyValSize)                   ' Null 没有被找到, 分离字符串
    End If
    '------------------------------------------------------------
    ' 决定转换的关键字的值类型...
    '------------------------------------------------------------
    Select Case KeyValType                                  ' 搜索数据类型...
    Case REG_SZ                                             ' 字符串注册关键字数据类型
        KeyVal = tmpVal                                     ' 复制字符串的值
    Case REG_DWORD                                          ' 四字节的注册表关键字数据类型
        For i = Len(tmpVal) To 1 Step -1                    ' 将每位进行转换
            KeyVal = KeyVal + Hex(Asc(Mid(tmpVal, i, 1)))   ' 生成值字符。 By Char。
        Next
        KeyVal = Format$("&h" + KeyVal)                     ' 转换四字节的字符为字符串
    End Select
    
    GetKeyValue = True                                      ' 返回成功
    rc = RegCloseKey(hKey)                                  ' 关闭注册表关键字
    Exit Function                                           ' 退出
    
GetKeyError:      ' 错误发生后将其清除...
    KeyVal = ""                                             ' 设置返回值到空字符串
    GetKeyValue = False                                     ' 返回失败
    rc = RegCloseKey(hKey)                                  ' 关闭注册表关键字
End Function