1. RE: Fw: Strange behavior with listivews and popups
Derek,
If you're thinking about applying this to Win32Lib then hold off. I
think the problem is not in Win32Lib but rather how I used a popup with
a list view.
I tried this in Windows explorer and what I found out was that if you
right click in a list view within Explorer the popup only appears when
the right button is release, not when pressed. In my program I was
showing the popup when the right mouse button is pressed. Actually, I
never knew that you could right click in a list view and drag to
highlight multiple items.
Jonas
Derek Parnell wrote:
> Thisis a resend 'cos I don't think the first one got thru.
>
> ----------------
> cheers,
> Derek Parnell
> ----- Original Message -----
> From: "Derek Parnell" <ddparnell at bigpond.com>
> To: <EUforum at topica.com>
> Sent: Saturday, April 05, 2003 10:10 AM
> Subject: Re: Strange behavior with listivews and popups
>
>
> > Jonas,
> > I have a fix for this effect. First the reason behind it...
> >
> > The popup takes focus and thus receives the Right-Mouse-Up event instead
> of
> > the ListView underneath. Now the listview knows that the mouse button
> > was
> > pressed, and when it gets focus again, it notices that the mouse has
> > moved
> > position while (it thinks) that the button was still down, so it draws
> > the
> > dotted box.
> >
> > Anyhow, to get rid of this effect we need to tell the ListView to ignore
> the
> > initial right mouse down event. You need to do two things...
> >
> > First, in the win32lib file, find the routine fDoMouse and locate this
> > line...
> >
> > VOID = invokeHandler(id, w32HMouse, {iMsg, mouseX, mouseY,
> > getKeyMasks(wParam)})
> >
> > add these three lines immediately after it...
> >
> > if sequence(VOID) then
> > lRC = {kReturnNow}
> > end if
> >
> > Next, in your program, add this line after the popup() has been
> > invoked...
> >
> > returnValue(0)
> >
> > That should do it for you.
> >
> > ----------------
> > cheers,
> > Derek Parnell
> > ----- Original Message -----
> > From: "Jonas Temple" <jtemple at yhti.net>
> > To: "EUforum" <EUforum at topica.com>
> > Sent: Saturday, April 05, 2003 1:17 AM
> > Subject: Strange behavior with listivews and popups
> >
> >
> > > I've noticed that when I use popup() from a listview a dotted rectangle
> > > (similar to what you would see in a drag/copy operation in a word
> > > processor) is showing up if an item is clicked in the popup. Has anyone
> > > seen this or know how to fix this?
> > >
> > > I've attached a small example:
> > >
> > > -- code generated by Win32Lib IDE v0.16.0
> > >
> > >
> > > include Win32Lib.ew
> > > without warning
> > >
> >
> > --------------------------------------------------------------------------
> >
> > ------
> > >
> > > -- Window Window1
> > > global constant Window1 = createEx( Window, "Window1", 0, Default,
> > > Default, 537, 401, 0, 0 )
> > > global constant TestPM = createEx( Popup, "Test Popup", Window1, 0, 1,
> > > 0, 0, 0, 0 )
> > > global constant TestPI = createEx( MenuItem, "Test Item", TestPM, 0, 2,
> > > 0, 0, 0, 0 )
> > > global constant TestLV = createEx( ListView, {"Test"}, Window1, 16, 16,
> > > 460, 284, or_all({LVS_REPORT,LVS_SHOWSELALWAYS}), 0 )
> > > atom lvMask
> > > integer lvOk
> > > lvMask = or_all({LVS_EX_FULLROWSELECT})
> > > lvOk = sendMessage(TestLV,LVM_SETEXTENDEDLISTVIEWSTYLE,lvMask,lvMask)
> > > global constant OkayPB = createEx( PushButton, "Okay", Window1, 40, 316,
> > > 88, 28, 0, 0 )
> > > ---------------------------------------------------------
> >
> > --------------------------------------------------------------------------
> >
> > ------
> > >
> > > procedure TestLV_onMouse (integer self, integer event, sequence
> > > params)--params is ( int event, int x, int y, int shift )
<snip>
