'"frmTools" 窗体代码
'****************************************
'---此模块演示了给窗体添加最大最小化按钮---
'****************************************
Option Explicit
'以下声明API函数
#If Win64 Then '64位
Private Declare PtrSafe Function FindWindow _
Lib "user32" _
Alias "FindWindowA" ( _
ByVal lpClassName As String, _
ByVal lpWindowName As String) _
As LongPtr
Private Declare PtrSafe Function GetWindowLong _
Lib "user32" _
Alias "GetWindowLongPtrA" ( _
ByVal hwnd As LongPtr, _
ByVal nIndex As Long) _
As LongPtr
Private Declare PtrSafe Function SetWindowLong _
Lib "user32" _
Alias "SetWindowLongPtrA" ( _
ByVal hwnd As LongPtr, _
ByVal nIndex As Long, _
ByVal dwNewLong As LongPtr) _
As LongPtr
Private Declare PtrSafe Function DrawMenuBar _
Lib "user32" ( _
ByVal hwnd As LongPtr) _
As Long
#Else '32位
'查找窗口
Private Declare Function FindWindow Lib "User32" Alias "FindWindowA" ( _
ByVal lpClassName As String, ByVal lpWindowName As String) As Long
'取得窗口样式位
Private Declare Function GetWindowLong _
Lib "User32" _
Alias "GetWindowLongA" ( _
ByVal Hwnd As Long, _
ByVal nIndex As Long) _
As Long
'设置窗口样式位
Private Declare Function SetWindowLong _
Lib "User32" _
Alias "SetWindowLongA" ( _
ByVal Hwnd As Long, _
ByVal nIndex As Long, _
ByVal dwNewLong As Long) _
As Long
'重绘窗体标题栏
Private Declare Function DrawMenuBar _
Lib "User32" ( _
ByVal Hwnd As Long) _
As Long
#End If
#If Win64 Then '64位
Private FHwnd As LongPtr
Private FIstype As LongPtr
#Else
Private FHwnd As Long
Private FIstype As Long
#End If
'以下定义常数
Private Const GWL_STYLE = (-16) '窗口样式
Private Const WS_MAXIMIZEBOX = &H10000 '最大化按钮
Private Const WS_MINIMIZEBOX = &H20000 '最小化按钮
'**************************************
'---------------主程序-----------------
'**************************************
Private Sub UserForm_Initialize()
'查找窗口句柄
FHwnd = FindWindow("ThunderDFrame", Me.Caption)
'取得窗口样式位
FIstype = GetWindowLong(FHwnd, GWL_STYLE)
'窗体样式位: 原样式和最大化、最小化按钮
FIstype = FIstype Or WS_MAXIMIZEBOX Or WS_MINIMIZEBOX
'重设窗体样式位
SetWindowLong FHwnd, GWL_STYLE, FIstype
'重绘窗体标题栏
DrawMenuBar FHwnd
End Sub
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