Re: Distinguishing right from left drag

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#2963

From: Remy Lebeau (TeamB)
Date: Fri, 20 Oct 2006 10:10

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"Richard Kavanagh" <dd.foldhill@google-ignore-mail.com> wrote in message
news:4538a008@newsgroups.borland.com...

> I have a form where I have overridden WindowProc to enable me to
> process the WM_DROPFILES message. This works fine. How do I
> distinguish whether the user has dragged with the left or right mouse
> buttons?

The WM_DROPFILES message does not provide that information.  You would have
to implement OLE Drag&Drop instead, by deriving a class from IDropTarget and
then call RegisterDragDrop().  The various methods of the IDropTarget
interface specify the keyboard and mouse keys that are used during the
dragging.


Gambit

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Subject: Re: Distinguishing right from left drag
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