Private Declare Function SetCapture Lib "user32" (ByVal hWnd As Long) As Long
Private Declare Function ReleaseCapture Lib "user32" () As Long
然后,我们可以在控件(以 Picture1 为例)的 MouseMove 事件上加上以下代码:
With Picture1 'Change this to the name of the control
If Button = 0 Then
If (X < 0) Or (Y < 0) Or (X > .Width) Or (Y > .Height) Then
'Mouse pointer is outside button, so let other controls receive
'mouseevents too:
ReleaseCapture
' 放入鼠标离开的代码
Else
' Mouse pointer is over button, so we'll capture it, thus
' we'll receive mouse messages even if the mouse pointer is
' not over the button
SetCapture .hwnd
' 放入鼠标进入的代码
End If
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