'居中
Public Function CenterForm(FormNameMMM1 As Form, FormNameMMM2 As Form)
FormNameMMM1.Move (FormNameMMM2.Width - FormNameMMM1.Width) \ 2, _
(FormNameMMM2.Height - FormNameMMM1.Height) \ 2
End Function
Private Declare Function GetWindowLong Lib "user32" Alias _
"GetWindowLongA" (ByVal hwnd As Long, _
ByVal nIndex As Long) As Long
Private Declare Function SetWindowLong Lib "user32" Alias _
"SetWindowLongA" (ByVal hwnd As Long, _
ByVal nIndex As Long, ByVal dwNewLong As Long) As Long
Const GWL_STYLE = (-16)
Const WS_THICKFRAME = &H40000
Private Sub MDIForm_Load()
Dim CurStyle As Long
Dim NewStyle As Long
'固定单边框
CurStyle = GetWindowLong(MDIfrmMain.hwnd, GWL_STYLE)
NewStyle = SetWindowLong(MDIfrmMain.hwnd, GWL_STYLE, CurStyle And Not (WS_THICKFRAME))