使用下面代码Global Const SWP_NOMOVE = &H2 Global Const SWP_NOSIZE = &H1 Global Const HWND_TOPMOST = -1 dim lwinHwnd as long '使显示信息窗体处于所有应用程序的顶层 lwinHwnd = FindWindow(vbNullString, form1.Caption) SetWindowPos lwinHwnd, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOMOVE Or SWP_NOSIZE
Const HWND_TOPMOST = -1 Const HWND_NOTOPMOST = -2 Const SWP_NOSIZE = &H1 Const SWP_NOMOVE = &H2 Const SWP_NOACTIVATE = &H10 Const SWP_SHOWWINDOW = &H40 Private Declare Sub 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)Private Sub Form_Activate() SetWindowPos Me.hWnd, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOACTIVATE Or SWP_SHOWWINDOW Or SWP_NOMOVE Or SWP_NOSIZE End Sub
Global Const SWP_NOSIZE = &H1
Global Const HWND_TOPMOST = -1
dim lwinHwnd as long
'使显示信息窗体处于所有应用程序的顶层
lwinHwnd = FindWindow(vbNullString, form1.Caption)
SetWindowPos lwinHwnd, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOMOVE Or SWP_NOSIZE
Const HWND_NOTOPMOST = -2
Const SWP_NOSIZE = &H1
Const SWP_NOMOVE = &H2
Const SWP_NOACTIVATE = &H10
Const SWP_SHOWWINDOW = &H40
Private Declare Sub 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)Private Sub Form_Activate() SetWindowPos Me.hWnd, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOACTIVATE Or SWP_SHOWWINDOW Or SWP_NOMOVE Or SWP_NOSIZE
End Sub