设置系统时间.

Option Explicit

Private Declare Sub GetSystemTime Lib "kernel32" (lpSystemTime As SYSTEMTIME)

Private Declare Function SetSystemTime Lib "kernel32" (lpSystemTime As SYSTEMTIME) As Long

Private Type SYSTEMTIME
        wYear As Integer
        wMonth As Integer
        wDayOfWeek As Integer
        wDay As Integer
        wHour As Integer
        wMinute As Integer
        wSecond As Integer
        wMilliseconds As Integer
End Type
Dim time As SYSTEMTIME

Private Sub Command1_Click()
Dim hour As Integer
hour = txttime(3) - 8   'Beijing Time

With time
    .wYear = txttime(0).Text
    .wMonth = txttime(1).Text
    .wDay = txttime(2).Text
    .wHour = IIf(hour > 0, hour, hour + 24)     'set universal time
    .wMinute = txttime(4).Text
    .wSecond = txttime(5).Text
End With
SetSystemTime time
   
End Sub

Private Sub Form_Load()
    GetSystemTime time
    With time
        txttime(0).Text = .wYear
        txttime(1).Text = .wMonth
        txttime(2).Text = .wDay
        txttime(3).Text = .wHour + 8    'Beijing Time
        txttime(4).Text = .wMinute
        txttime(5).Text = .wSecond
    End With
   
End Sub

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