Public Declare Function GetInputState Lib "user32" () As Long

Public Sub newDoEvents() '这个是比较简单,功能较少
If GetInputState() <> 0 then DoEvents
End Sub

'------------------------
Public Const QS_HOTKEY = &H80
Public Const QS_KEY = &H1
Public Const QS_MOUSEBUTTON = &H4
Public Const QS_MOUSEMOVE = &H2
Public Const QS_PAINT = &H20
Public Const QS_POSTMESSAGE = &H8
Public Const QS_SENDMESSAGE = &H40
Public Const QS_TIMER = &H10
Public Const QS_ALLINPUT = (QS_SENDMESSAGE Or QS_PAINT Or QS_TIMER Or QS_POSTMESSAGE Or QS_MOUSEBUTTON Or QS_MOUSEMOVE Or QS_HOTKEY Or QS_KEY)
Public Const QS_MOUSE = (QS_MOUSEMOVE Or QS_MOUSEBUTTON)
Public Const QS_INPUT = (QS_MOUSE Or QS_KEY)
Public Const QS_ALLEVENTS = (QS_INPUT Or QS_POSTMESSAGE Or QS_TIMER Or QS_PAINT Or QS_HOTKEY)
Public Declare Function GetQueueStatus Lib "user32" (ByVal qsFlags As Long) As Long

Public Function cGetInputState() '这个可以按自己的要求定义,接收到什么消息才DoEvents
Dim qsRet As Long
qsRet = GetQueueStatus(QS_HOTKEY Or QS_KEY Or QS_MOUSEBUTTON Or QS_PAINT)
if qsRet<>0 then DoEvents
End Function
'有了上面2个函数就不怕影响循环中的运算效率了
'它可以让你的程序循环速度比使用 DoEvents 更快