WM_LBUTTONDOWN and the lParam parameter

[Nick]

Hi there,

I'm trying to emulate mouse clicks using WM_LBUTTONDOWN, and
WM_LBUTTONUP respectively. I can't quite remember how I am to create the
lParam from the x and y coordinates, any imput on this would be greatly
appreciated...

 

[Colin Neller]

Dim lParam as Long = MAKELONG(x, y)

Public Shared Function MAKELONG(ByVal low As Integer, ByVal high As Integer)
As Long
Return (low And &HFFFF) Or ((high And &HFFFF) << 16)
End Function

 

[Nick]

Cheers Colin, just what I was after...

Nick.

Dim lParam as Long = MAKELONG(x, y)

Public Shared Function MAKELONG(ByVal low As Integer, ByVal high As
Integer) As Long
Return (low And &HFFFF) Or ((high And &HFFFF) << 16)
End Function

 

[Dragon]

Hi Nick,

Try this:

~
lParam = CInt(y) << 16 Or x

~