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

MouseX, MouseY - Get mouse coordinates, relative to the screen or a window

Private Type POINTAPI
    X As Long
    Y As Long
End Type
Private Declare Function GetCursorPos Lib "user32" (lpPoint As POINTAPI) As Long
Private Declare Function ScreenToClient Lib "user32" (ByVal hWnd As Long, _
    lpPoint As POINTAPI) As Long

' Get mouse X coordinates in pixels
'
' If a window handle is passed, the result is relative to the client area
' of that window, otherwise the result is relative to the screen

Function MouseX(Optional ByVal hWnd As Long) As Long
    Dim lpPoint As POINTAPI
    GetCursorPos lpPoint
    If hWnd Then ScreenToClient hWnd, lpPoint
    MouseX = lpPoint.X
End Function

' Get mouse Y coordinates in pixels
'
' If a window handle is passed, the result is relative to the client area
' of that window, otherwise the result is relative to the screen

Function MouseY(Optional ByVal hWnd As Long) As Long
    Dim lpPoint As POINTAPI
    GetCursorPos lpPoint
    If hWnd Then ScreenToClient hWnd, lpPoint
    MouseY = lpPoint.Y
End Function
Francesco Balena
 
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