Private Declare Function GetSystemMenu Lib "user32" (ByVal hwnd As Long, ByVal bRevert As Long) As Long Private Declare Function DeleteMenu Lib "user32" (ByVal hMenu As Long, ByVal nPosition As Long, ByVal wFlags As Long) As Long Private Const SC_MAXIMIZE = &HF030 Private Const MF_BYCOMMAND = &H0& Private Const WS_MAXIMIZEBOX = &H10000 Private Const GWL_EXSTYLE = (-20) Private Const GWL_STYLE = (-16) Private Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA" _ (ByVal hwnd As Long, _ ByVal nIndex As Long, _ ByVal dwNewLong As Long) As Long Private Declare Function GetWindowLong Lib "user32" Alias "GetWindowLongA" _ (ByVal hwnd As Long, _ ByVal nIndex As Long) As Long
Private Sub MDIForm_Load() Dim hMenu As Long, Success As Long
hMenu = GetSystemMenu(hwnd, 0) Success = DeleteMenu(hMenu, SC_MAXIMIZE, MF_BYCOMMAND) Dim xl As Long
Me.Show xl = GetWindowLong(hwnd, GWL_STYLE) xl = xl And (Not WS_MAXIMIZEBOX) SetWindowLong hwnd, GWL_STYLE, xl End Sub 这是一个可以禁止最大化的代码,使MAXBUTTON无效,但我不知道如何改成使MINBUTTON无效的 请高手赐教
Private Declare Function DeleteMenu Lib "user32" (ByVal hMenu As Long, ByVal nPosition As Long, ByVal wFlags As Long) As Long
Private Const SC_MAXIMIZE = &HF030
Private Const MF_BYCOMMAND = &H0&
Private Const WS_MAXIMIZEBOX = &H10000
Private Const GWL_EXSTYLE = (-20)
Private Const GWL_STYLE = (-16)
Private Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA" _
(ByVal hwnd As Long, _
ByVal nIndex As Long, _
ByVal dwNewLong As Long) As Long
Private Declare Function GetWindowLong Lib "user32" Alias "GetWindowLongA" _
(ByVal hwnd As Long, _
ByVal nIndex As Long) As Long
Private Sub MDIForm_Load()
Dim hMenu As Long, Success As Long
hMenu = GetSystemMenu(hwnd, 0)
Success = DeleteMenu(hMenu, SC_MAXIMIZE, MF_BYCOMMAND)
Dim xl As Long
Me.Show
xl = GetWindowLong(hwnd, GWL_STYLE)
xl = xl And (Not WS_MAXIMIZEBOX)
SetWindowLong hwnd, GWL_STYLE, xl
End Sub
这是一个可以禁止最大化的代码,使MAXBUTTON无效,但我不知道如何改成使MINBUTTON无效的
请高手赐教