[Lazarus] OnMouseWheel[Down/Up] support in TControl (patch included)

[Mattias Gaertner]

On Tue, 10 Jun 2008 18:27:45 -0300
Luiz Americo Pereira Camara <luizmed at oi.com.br> wrote:

> Mattias Gaertner wrote:
> >> As can be seen on that report, it introduces a Delphi
> >> incompatibility.
> >>     
> >
> > It's not a Delphi, but a winapi incompatibility.
> >   
> 
> No, it's a Delphi compatibility. I tested CM_MOUSEWHEEL, the
> equivalent message of LM_MOUSEWHEEL. Under Delphi XPos and YPos
> fields returns screen coordinates.
> Furthermore, OnMouseWheel MousePos also is at screen coordinates.

The VCL sends OnMouseWheel to the right child control, but it sends
screen coords? That would be very inconsistent.


Mattias