还等什么，让我们现在开始。
1。新建一个VB6的标准EXE工程，然后添加一个模块，将下列代码加入新的模块中：
Option Explicit
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 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
Const GWL_WNDPROC = (-4&)
Dim PrevWndProc&
Const WM_NCLBUTTONDBLCLK = &HA3
Public Sub Init(hWnd As Long)
PrevWndProc = SetWindowLong(hWnd, GWL_WNDPROC, AddressOf SubWndProc)
End Sub
Public Sub Terminate(hWnd As Long)
Call SetWindowLong(hWnd, GWL_WNDPROC, PrevWndProc)
End Sub
Private Function SubWndProc(ByVal hWnd As Long, ByVal Msg As Long, _
ByVal wParam As Long, ByVal lParam As Long) _
As Long
If Msg = WM_NCLBUTTONDBLCLK Then
Exit Function
End If
SubWndProc = CallWindowProc(PrevWndProc, hWnd, Msg, wParam, lParam)
End Function
2。在窗体的Load事件中加入一下代码：
Private Sub Form_Load()
Call Init(Me.hWnd)
End Sub
3。最后在窗体的Unload事件中加入：
Private Sub Form_Unload(Cancel As Integer)
Call Terminate(Me.hWnd)
End Sub
好啦，可以运行我们创建的这个工程了，现在双击窗体的标题栏是不是和以前不一样啊！
：）
以上程序在Win2000中文版、VB6下编译运行通过