OpenEuphoria

Re: Strange behavior with listivews and popups

• Posted by Derek Parnell <ddparnell at bigpond.com> Apr 06, 2003
• 382 views

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 )
> sequence pos
> -- Right mouse button down, show the popup
> if params[1] = WM_RBUTTONDOWN then
> pos = getPointerRelPos(Window1)
> popup(TestPM, pos[1], pos[2])
> end if
> end procedure
> setHandler( TestLV, w32HMouse, routine_id("TestLV_onMouse"))
> --------------------------------------------------------------------------
------
>
> procedure OkayPB_onClick (integer self, integer event, sequence
> params)--params is ()
> closeWindow(Window1)
> end procedure
> setHandler( OkayPB, w32HClick, routine_id("OkayPB_onClick"))
>
>
> WinMain( Window1,Normal )
>
>
>
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>