1. Disallowing moving a window (>JUDITH)
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Hello,
this example shows how to disallow moving a window
(better method then setting postion back with each move,
which causes flickering and appearing 'ghost' window - the method IDE =
uses)
I have written it for Judith, but I think this can be useful also for =
others.
<CODE :>
include win32lib.ew
constant
WM_WINDOWPOSCHANGING =3D #0046
constant
flags =3D 4+4+4+4+4+4
-- six members in the WINDOWPOS struct
-- before flags
constant mainWindow =3D
create (Window, "Test", 0, 100, 100, 100, 100, 0) -- testing window
procedure onEvent_mainWindow(atom event, atom wParam, atom lParam)
-- lParam is pointer to WINDOWPOS structure
atom cur_flags
if event =3D WM_WINDOWPOSCHANGING then -- Windows tell us they are =
about to move a window
cur_flags =3D peek4u(lParam + flags) -- give the current flags (UInt)
poke4(lParam+flags,or_bits(SWP_NOMOVE,cur_flags)) -- combine the =
current flags with
end if --SWP_NOMOVE, which disallows moving
end procedure
onEvent[mainWindow] =3D routine_id("onEvent_mainWindow")
-- register for as much windows as you want
WinMain(mainWindow, Normal)
</CODE>
___
Regards,
Martin Stachon
martin.stachon at worldonline.cz
http://www.webpark.cz/stachon
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<DIV><FONT face=3D"Arial CE" size=3D2>Hello,<BR>this example shows how =
to disallow=20
moving a window<BR>(better method then setting postion back with each=20
move,<BR>which causes flickering and appearing 'ghost' window - the =
method IDE=20
uses)<BR>I have written it for Judith, but I think this can be useful =
also for=20
others.<BR><BR><CODE :><BR><CODE><PRE><FONT =
color=3D#0000ff>include </FONT>win32lib.ew
<FONT color=3D#0000ff>constant</FONT>
WM_WINDOWPOSCHANGING =3D #0046
<FONT color=3D#0000ff>constant</FONT>
flags =3D 4+4+4+4+4+4
<FONT color=3D#ff0055>-- six members in the WINDOWPOS struct</FONT>
<FONT color=3D#ff0055>-- before flags</FONT>
<FONT color=3D#0000ff>constant </FONT>mainWindow =3D
create <FONT color=3D#993333>(</FONT>Window, <FONT =
color=3D#00a033>"Test"</FONT>, 0, 100, 100, 100, 100, 0<FONT =
color=3D#993333>) </FONT><FONT color=3D#ff0055>-- testing window</FONT>
<FONT color=3D#0000ff>procedure </FONT>onEvent_mainWindow<FONT =
color=3D#993333>(</FONT><FONT color=3D#ff00ff>atom </FONT>event, <FONT =
color=3D#ff00ff>atom </FONT>wParam, <FONT color=3D#ff00ff>atom =
</FONT>lParam<FONT color=3D#993333>)</FONT>
<FONT color=3D#ff0055> -- lParam is pointer to WINDOWPOS =
structure</FONT>
<FONT color=3D#ff00ff> atom </FONT>cur_flags
<FONT color=3D#0000ff> if </FONT>event =3D WM_WINDOWPOSCHANGING <FONT =
color=3D#0000ff>then </FONT><FONT color=3D#ff0055>-- Windows tell us =
they are about to move a window</FONT>
cur_flags =3D <FONT color=3D#ff00ff>peek4u</FONT><FONT =
color=3D#993333>(</FONT>lParam + flags<FONT color=3D#993333>) =
</FONT><FONT color=3D#ff0055>-- give the current flags (UInt)</FONT>
<FONT color=3D#ff00ff> poke4</FONT><FONT =
color=3D#993333>(</FONT>lParam+flags,<FONT =
color=3D#ff00ff>or_bits</FONT><FONT =
color=3D#330033>(</FONT>SWP_NOMOVE,cur_flags<FONT =
color=3D#330033>)</FONT><FONT color=3D#993333>) </FONT><FONT =
color=3D#ff0055>-- combine the current flags with</FONT>
<FONT color=3D#0000ff> end if </FONT><FONT color=3D#ff0055>--SWP_NOMOVE, =
which disallows moving</FONT>
<FONT color=3D#0000ff>end procedure</FONT>
onEvent<FONT color=3D#993333>[</FONT>mainWindow<FONT color=3D#993333>] =
</FONT>=3D <FONT color=3D#ff00ff>routine_id</FONT><FONT =
color=3D#993333>(</FONT><FONT =
color=3D#00a033>"onEvent_mainWindow"</FONT><FONT =
color=3D#993333>)</FONT>
<FONT color=3D#ff0055>-- register for as much windows as you want</FONT>
WinMain<FONT color=3D#993333>(</FONT>mainWindow, Normal<FONT =
color=3D#993333>)</FONT>
</PRE></CODE><BR></CODE><BR><BR>___<BR>Regards,<BR>Martin =
Stachon<BR><A=20
href=3D"mailto:martin.stachon at worldonline.cz">martin.stachon at worldonline.=
cz</A><BR><A=20
href=3D"http://www.webpark.cz/stachon">http://www.webpark.cz/stachon</A><=
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2. Re: Disallowing moving a window (>JUDITH)
Hello Judith,
>
> Hi, Martin,
>
> I was disappointed to find that on my Windows98 SE with Win32lib.ew
> version 55.1 that the ghosting still persists using your program.
>
> What system are you using?
>
> Judith
Win 98 + win32lib v0551.
With this program, you cannot move a window at all,
so it should not flicker. Did you removed the moveWindow() calls ?
Martin
3. Re: Disallowing moving a window (>JUDITH)
Hello Judith,
>
> Hello Judith,
> >
> > Hi, Martin,
> >
> > I was disappointed to find that on my Windows98 SE with Win32lib.ew
> > version 55.1 that the ghosting still persists using your program.
> >
> > What system are you using?
> >
> > Judith
>
> Win 98 + win32lib v0551.
> With this program, you cannot move a window at all,
> so it should not flicker. Did you removed the moveWindow() calls ?
>
> Martin
>I ran your test program. It does not flicker. But there is a ghost
>window that moves. Your message said it removed the flicker *and*
>ghosting.
>Judith
I have tried to replace your onEvent_Property with my code and it works.
- Properites Window is unmovable, no flicker and ghost.
with this line:
poke4(lParam+flags,or_bits(or_bits(SWP_NOMOVE,SWP_NOSIZE),cur_flags))
you can also forbid resizing of window.
It also forbids resizing/moving by setRect(), so you will probably have
to create some varible for which will be onEvent checking to allow
resizing/moving by your code.
I thought the flicker caused by ghost.
Regards,
Martin
