Re: [Oorexx-users] Erratic results from hitTestInfo

[Mark M. <mie...@gm...>]

On Fri, Sep 28, 2012 at 11:16 AM, Staffan Tylen <sta...@gm...>wrote:

> Correction: as I added the ::method and expose lines afterwards while
> composing my note I forgot to include the arg statement, so the sample code
> I use is therefore:
>
> :method onTreeviewContext unguarded
>   expose tree cmenu
>   use arg hwnd, x, y
>
>
>   pos = .Point~new(x, y)
>   say tree~hitTestInfo(pos)~hItem tree~hitTestInfo(pos)~location
>   if tree~hitTestInfo(pos)~hItem <> 0 then cmenu~show(pos)
>

The x and y sent here are in screen co-ordinates.  hitTestInfo() takes
client co-ordinates.  So you need to map the screen co-ordinates to the
tree-view client co-ordinates to use with hitTestInfo().

Use the screen2client() method to map the point.  That will change the x
and y value of pos.  So, if you need to retain those values, use the copy()
method of the Point class to do that.

In pseudo code it goes something like this

treeView = newTreeView

clientPos = pos~copy
treeView~screen2client(clientPos)

d = treeView~hitTestInfo(clientPos)

I believe that is the problem and solution.  If you still can't get it to
work, then post again.

--
Mark Miesfeld