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Tip of the Day
Language: VB4/32,VB5,VB6
Expertise: Intermediate
Jun 24, 2000

DiscardMouseMessages - Prevent queud mouse actions from being processed

Private Type POINTAPI
    X As Long
    Y As Long
End Type
Private Type MSG
    hwnd As Long
    message As Long
    wParam As Long
    lParam As Long
    time As Long
    pt As POINTAPI
End Type
Private Declare Function PeekMessage Lib "user32" Alias "PeekMessageA" (lpMsg _
    As MSG, ByVal hWnd As Long, ByVal wMsgFilterMin As Long, _
    ByVal wMsgFilterMax As Long, ByVal wRemoveMsg As Long) As Long
Private Const PM_REMOVE = &H1
Private Const WM_MOUSEFIRST = &H200
Private Const WM_MOUSELAST = &H209

' Discard mouse messages waiting to be processed
'
' This procedure is sometimes useful to prevent VB
' from processing spurious mouse clicks

Private Sub DiscardMouseMessages(ByVal hWnd As Long)
    Dim dummy As MSG

    Do While PeekMessage(dummy, hWnd, WM_MOUSEFIRST, WM_MOUSELAST, PM_REMOVE)
        ' continue to loop until there are no more mouse messages
    Loop
    
End Sub


Francesco Balena
 
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