如何在窗口的标题栏上加一个自己的按钮？

需要自绘标题栏或者cut掉标题栏，然后自己模拟标题栏
用
SetParent Command1.hwnd, 0
SetWindowLong Command1.hwnd, -8, Me.hwnd
把command1分离窗口出来,使之能自由移动
对me做子类处理,捕获WM_MOVE消息，处理command1的位置需要注意的是如果希望command1响应事件，需要把它放在一个容器内
如frame1，然后对frame1使用上面的那两个函数。
可以参考
http://expert.csdn.net/Expert/FAQ/FAQ_Index.asp?id=7691下面是个简单的例子：
在窗体中放上一个frame，在frame中放上一个commandbutton
'窗体代码
Private Sub Command1_Click()
Debug.Print "Click the title button"
End SubPrivate Sub Form_Load()
Frame1.BorderStyle = 0
Command1.Left = 0
Command1.Top = 0
Command1.Width = 240
Command1.Height = 210
moveHwnd = Frame1.hwnd
SetParent moveHwnd, 0
SetWindowLong moveHwnd, -8, Me.hwnd
gHW = Me.hwnd
hook
End SubPrivate Sub Form_Unload(Cancel As Integer)
Unhook
End Sub'模块部分的代码Option Explicit
Public moveHwnd As LongPublic Const GWL_WNDPROC = -4
Global lpPrevWndProc As Long
Global gHW As Long
Declare Function CallWindowProc Lib "user32" Alias "CallWindowProcA" (ByVal lpPrevWndFunc As Long, ByVal hwnd As Long, ByVal MSG As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long, ByVal dwNewLong As Long) As LongPublic Declare Function SetParent Lib "user32" (ByVal hWndChild As Long, ByVal hWndNewParent As Long) As Long
Public Const WM_MOVE As Long = &H3
Public Declare Function MoveWindow Lib "user32" (ByVal hwnd As Long, ByVal x As Long, ByVal y As Long, ByVal nWidth As Long, ByVal nHeight As Long, ByVal bRepaint As Long) As Long
Public Declare Function GetWindowRect Lib "user32" (ByVal hwnd As Long, lpRect As RECT) As Long
Public Type RECT
    Left As Long
    Top As Long
    Right As Long
    Bottom As LongEnd Type

Function WindowProc(ByVal hw As Long, ByVal uMsg As Long, ByVal wParam As Long, ByVal lParam As Long) As LongSelect Case uMsg
    Case WM_MOVE
        Dim t As RECT
        GetWindowRect hw, t
        MoveWindow moveHwnd, t.Right - 72, t.Top + 6, 16, 14, 1
    Case Else
End Select
WindowProc = CallWindowProc(lpPrevWndProc, hw, uMsg, wParam, lParam)
End Function

Public Sub hook()
lpPrevWndProc = SetWindowLong(gHW, GWL_WNDPROC, AddressOf WindowProc)
End Sub

Public Sub Unhook()
Dim temp As Long
temp = SetWindowLong(gHW, GWL_WNDPROC, lpPrevWndProc)
End Sub
'方法二==========================================================
'模块
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 GetWindowRect Lib "user32" (ByVal hwnd As Long, lpRect As Rect) As Long
Private Declare Function GetParent Lib "user32" (ByVal hwnd As Long) As Long
Private Declare Function SetParent Lib "user32" (ByVal hWndChild As Long, ByVal hWndNewParent As Long) As Long
Private Declare Function SetWindowPos Lib "user32" (ByVal hwnd As Long, ByVal hWndInsertAfter As Long, ByVal x As Long, ByVal y As Long, ByVal cx As Long, ByVal cy As Long, ByVal wFlags As Long) As Long
Private Declare Function SetWindowsHookEx Lib "user32" Alias "SetWindowsHookExA" (ByVal idHook&, ByVal lpfn&, ByVal hmod&, ByVal dwThreadId&) As Long
Private Declare Function UnhookWindowsHookEx Lib "user32" (ByVal hHook&) As Long
Private Declare Function CreateWindowEx Lib "user32" Alias "CreateWindowExA" (ByVal dwExStyle As Long, ByVal lpClassName As String, ByVal lpWindowName As String, ByVal dwStyle As Long, ByVal x As Long, ByVal y As Long, ByVal nWidth As Long, ByVal nHeight As Long, ByVal hWndParent As Long, ByVal hMenu As Long, ByVal hInstance As Long, lpParam As Any) As Long
Private Declare Function ShowWindow Lib "user32" (ByVal hwnd As Long, ByVal nCmdShow As Long) As Long'*********************
'* Type Declarations *
'*********************
Private Type Rect
    Left As Long
    Top As Long
    Right As Long
    Bottom As Long
End TypePrivate Type CWPSTRUCT
    lParam As Long
    wParam As Long
    Message As Long
    hwnd As Long
End Type'*********************
'* Consts            *
'*********************
Const WM_MOVE = &H3
Const WM_SETCURSOR = &H20
Const WM_NCPAINT = &H85
Const WM_COMMAND = &H111Const SWP_FRAMECHANGED = &H20
Const GWL_EXSTYLE = -20'*********************
'* Vars              *
'*********************
Private WHook&
Private ButtonHwnd As LongPublic Sub Init()
    'Create the button that is going to be placed in the Titlebar
    ButtonHwnd& = CreateWindowEx(0&, "Button", "?", &H40000000, 50, 50, 14, 14, Form1.hwnd, 0&, App.hInstance, 0&)
    'Show the button cause it磗 invisible
    Call ShowWindow(ButtonHwnd&, 1)
    'Initialize the window hooking for the button
    WHook = SetWindowsHookEx(4, AddressOf HookProc, 0, App.ThreadID)
    Call SetWindowLong(ButtonHwnd&, GWL_EXSTYLE, &H80)
    Call SetParent(ButtonHwnd&, GetParent(Form1.hwnd))
End SubPublic Sub Terminate()
    'Terminate the window hooking
    Call UnhookWindowsHookEx(WHook)
    Call SetParent(ButtonHwnd&, Form1.hwnd)
End SubPublic Function HookProc&(ByVal nCode&, ByVal wParam&, Inf As CWPSTRUCT)
    Dim FormRect As Rect
    Static LastParam&
    If Inf.hwnd = GetParent(ButtonHwnd&) Then
        If Inf.Message = WM_COMMAND Then
            Select Case LastParam
                'If the LastParam is cmdInTitlebar call the Click-Procedure
                'of the button
                Case ButtonHwnd&: Call Form1.cmdInTitlebar_Click
            End Select
        ElseIf Inf.Message = WM_SETCURSOR Then
            LastParam = Inf.wParam
        End If
        ElseIf Inf.hwnd = Form1.hwnd Then
        If Inf.Message = WM_NCPAINT Or Inf.Message = WM_MOVE Then
            'Get the size of the Form
            Call GetWindowRect(Form1.hwnd, FormRect)
            'Place the button int the Titlebar
            Call SetWindowPos(ButtonHwnd&, 0, FormRect.Right - 75, FormRect.Top + 6, 17, 14, SWP_FRAMECHANGED)
        End If
    End If
End Function'窗体
Public Sub cmdInTitlebar_Click()
    MsgBox "Example created by Druid Developing", vbInformation, "About this program"
End SubPrivate Sub Form_Load()
    Call Init
End SubPrivate Sub Form_Unload(Cancel As Integer)
    Call Terminate
End Sub

调试易

如何在窗口的标题栏上加一个自己的按钮？

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