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Option Explicit
Private Declare Function GetWindowLong Lib "user32" Alias "GetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long) As Long
Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As Long
Private Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long, ByVal dwNewLong As Long) As Long
Private Const GWL_STYLE = (-16)
Private Const WS_THICKFRAME As Long = &H40000 '(恢复大小)
Private Const WS_MINIMIZEBOX As Long = &H20000 '(最小化)
Private Const WS_MAXIMIZEBOX As Long = &H10000 '(最大化)
'这以上的代码放在窗体代码的顶部
Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
Private Const WM_SYSCOMMAND = &H112
Private Const SC_MINIMIZE = &HF020&
Private Sub UserForm_Activate()
Dim hWndForm As Long
Dim IStyle As Long
hWndForm = FindWindow("ThunderDFrame", Me.Caption)
IStyle = GetWindowLong(hWndForm, GWL_STYLE)
IStyle = IStyle Or WS_THICKFRAME '还原
IStyle = IStyle Or WS_MINIMIZEBOX '最小化
IStyle = IStyle Or WS_MAXIMIZEBOX '最大化
SetWindowLong hWndForm, GWL_STYLE, IStyle
SendMessage hWndForm, WM_SYSCOMMAND, SC_MINIMIZE, ByVal 0& '注释:使窗体最小化
End Sub |
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