frmcleardb.frm

一个vb的mis系统

VERSION 5.00
Begin VB.Form frmcleardb 
   BorderStyle     =   0  'None
   Caption         =   "清空数据库"
   ClientHeight    =   3480
   ClientLeft      =   0
   ClientTop       =   -105
   ClientWidth     =   6675
   ControlBox      =   0   'False
   Icon            =   "frmcleardb.frx":0000
   LinkTopic       =   "Form1"
   MaxButton       =   0   'False
   MDIChild        =   -1  'True
   MinButton       =   0   'False
   Picture         =   "frmcleardb.frx":5D52
   ScaleHeight     =   3480
   ScaleWidth      =   6675
   ShowInTaskbar   =   0   'False
   Begin VB.CheckBox chech_noclear 
      Caption         =   "Check1"
      Height          =   375
      Left            =   1440
      TabIndex        =   4
      Top             =   3600
      Value           =   1  'Checked
      Width           =   255
   End
   Begin VB.CheckBox clear4 
      BackColor       =   &H00EBEEF5&
      Caption         =   "Check1"
      Height          =   180
      Left            =   5400
      TabIndex        =   3
      Top             =   2345
      Width           =   180
   End
   Begin VB.CheckBox clear2 
      BackColor       =   &H00EBEEF5&
      Caption         =   "Check1"
      Height          =   180
      Left            =   5400
      TabIndex        =   2
      Top             =   1940
      Width           =   180
   End
   Begin VB.CheckBox clear3 
      BackColor       =   &H00EBEEF5&
      Caption         =   "Check1"
      Height          =   180
      Left            =   3000
      TabIndex        =   1
      Top             =   2345
      Width           =   180
   End
   Begin VB.CheckBox clear1 
      BackColor       =   &H00EBEEF5&
      Caption         =   "Check1"
      Height          =   180
      Left            =   3000
      TabIndex        =   0
      Top             =   1940
      Width           =   180
   End
   Begin VB.Timer mousemovetimer 
      Enabled         =   0   'False
      Interval        =   10
      Left            =   240
      Top             =   3600
   End
   Begin VB.Image pic_close 
      Height          =   180
      Left            =   6360
      Picture         =   "frmcleardb.frx":16254
      Top             =   120
      Width           =   180
   End
   Begin VB.Image pic_exit 
      Height          =   285
      Left            =   5160
      Picture         =   "frmcleardb.frx":162A6
      Top             =   2880
      Width           =   1065
   End
   Begin VB.Image pic_ok 
      Height          =   285
      Left            =   3840
      Picture         =   "frmcleardb.frx":172F2
      Top             =   2880
      Width           =   1065
   End
   Begin VB.Image mousermovepic 
      Height          =   345
      Left            =   0
      Picture         =   "frmcleardb.frx":1833E
      Stretch         =   -1  'True
      Top             =   0
      Width           =   6255
   End
End
Attribute VB_Name = "frmcleardb"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Dim oldx As Integer      '为解决全图形窗口没有标题栏而无法拖动的问题而定义的鼠标新旧两个XY变量
Dim oldy As Integer
Dim newx As Integer
Dim newy As Integer

Public cleartsql As String    '定义清空数据库的TSQL语言


'>>>>>>>>>>>>>>>>>>>>>>>>以下程序段解决全图形窗口的移动问题<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
'移植须知：将该功能移植到一个全图片窗口以解决不能移动的问题时，需注意：1 赋值计时器和伪装标题栏到新的全图片窗体中；2 赋值定义的新旧XY值（4个）和本程序段到新的全图片窗体中；3 修改计时器的过程“mousemovetimer_Timer”中的四个窗体名字。4 修改伪装标题栏的图片
'当指定图片（伪装标题栏）被鼠标点击时启动计时器，并记录下当时的初始鼠标坐标
Private Sub mousermovepic_MouseDown(Button As Integer, Shift As Integer, X As Single, Y As Single)
    mousemovetimer.Enabled = True
    oldx = X
    oldy = Y
End Sub
'当指定图片（伪装标题栏）上鼠标移动时，赋给新的鼠标XY值，注意系统每隔很短的时间会赋值一次。
Private Sub mousermovepic_MouseMove(Button As Integer, Shift As Integer, X As Single, Y As Single)
    newx = X
    newy = Y
End Sub
'当指定图片（伪装标题栏）被鼠标释放时关闭计时器。
Private Sub mousermovepic_MouseUp(Button As Integer, Shift As Integer, X As Single, Y As Single)
    mousemovetimer.Enabled = False
End Sub


'计时器将定时得到四个值，分别是固定的初始XY值，和不断变化的新的XY值。利用新旧XY的差，可以以此来移动窗体。适当调小计时器间隔时间将有助于移动窗体的流畅性。
Private Sub mousemovetimer_Timer()
    frmcleardb.Left = frmcleardb.Left - (oldx - newx)
    If frmcleardb.Top - (oldy - newy) < 1050 Then
        frmcleardb.Top = 1050
    Else
        frmcleardb.Top = frmcleardb.Top - (oldy - newy)
    End If
End Sub
'>>>>>>>>>>>>>>>>>>>>>>>>以上程序段解决全图形窗口的移动问题<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

'初始化窗口
Private Sub Form_Load()
    Me.Width = 6675
    Me.Height = 3495
    Me.Top = 1700
    Me.Left = 3000
    
    '初始化CHECK_NOCLEAR
    chech_noclear.Value = 1
End Sub

'关闭功能实现
Private Sub pic_close_Click()
    Unload Me
End Sub

'退出功能实现
Private Sub pic_exit_Click()
    Unload Me
End Sub

'清空数据库功能实现
Private Sub pic_ok_Click()
    '排除没有选定任何项目就按确定的情况
    If clear1.Value = 0 And clear2.Value = 0 And clear3.Value = 0 And clear4.Value = 0 Then
        If frmmain.check_have.Value = 0 Then
        Set publicmbox.Picture = publicmbox.pic8.Picture: publicmbox.Show vbModal
        End If
        Exit Sub
    End If
    
    '再次确定窗口
    clearmbox.Show vbModal
    If Me.chech_noclear.Value = 1 Then
        Exit Sub
    End If
    
    '四种点击情况的ClearTSQL语句
    If clear1.Value = 1 Then
        cleartsql = "delete stuinfo;"
    End If
    If clear2.Value = 1 Then
        cleartsql = cleartsql & "delete stumak1;"
    End If
    If clear3.Value = 1 Then
        cleartsql = cleartsql & "delete stumak2;"
    End If
    If clear4.Value = 1 Then
        cleartsql = cleartsql & "delete stumak3;"
    End If

    '定义两个临时的窗体1的XY坐标变量
    Dim clear1top As Integer
    Dim clear1left As Integer
    
    clear1top = frmcleardb.Top
    clear1left = frmcleardb.Left
    
    '启动副窗口并应用刚才的XY坐标变量，以此来保证两个窗口的一致性，并产生单一窗口的幻觉。
    frmcleardbing.Top = clear1top
    frmcleardbing.Left = clear1left
    frmcleardbing.Show
    
    '以下为调用函数执行删除工作。
    cleardb (cleartsql)
    Unload Me
End Sub