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| Subject:
CreateWindow fails...
From: Daniel Krippner ####@####.#### Date: 10 Jan 2002 09:58:18 -0000 Message-Id: <3C3D6468.2010702@gmx.net>
Hello!
Another one: the following code... the second call to CreateWindow()
fails, returning NULL. Is there anything like GetLastError() I think
it's called in windows, any way I can know why the call does not work?
Any other hints? Please help! :-)
Daniel
s_hwndVisu = CreateWindow(szClassName,
szWndName,
WS_OVERLAPPEDWINDOW | WS_CLIPCHILDREN,
0, 0, 0, 0,
NULL,
NULL,
hInstance,
NULL);
if (s_hwndVisu != NULL)
{
s_hwndEditC = CreateWindow("EDIT",
"OK",
WS_CHILD | WS_BORDER | ES_CENTER | ES_AUTOHSCROLL,
0,
0, 0, 0,
s_hwndVisu,
NULL,
hInstance,
NULL);
if (s_hwndEditC != NULL)
{
if (prevWndProc == 0)
prevWndProc = (int(*)())GetWindowLong(s_hwndEditC,
GWL_WNDPROC);
SetWindowLong(s_hwndEditC, GWL_WNDPROC,
(LONG)(WNDPROC)EditControlProc);
}
}
--
3S-Smart Software Solutions GmbH
Fischerstr.19, D-87435 Kempten
Tel. ++49-(0)831-54031-72
Fax ++49-(0)831-54031-50
email: ####@####.####
web: http://www.3s-software.com
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| Subject:
Re: [nanogui] CreateWindow fails...
From: "Greg Haerr" ####@####.#### Date: 12 Jan 2002 05:13:33 -0000 Message-Id: <028801c19b25$3d465800$3aba46a6@xmission.com> Try creating the second window using szClassName rather
than EDIT and pass some regular WS_ values. This will be
a quick check as to whether it's an edit box thing or something
to do with the parent/child relationship. Check out src/demos/mwin/mdemo.c
for a working demo.
Regards,
Greg
: Another one: the following code... the second call to CreateWindow()
: fails, returning NULL. Is there anything like GetLastError() I think
: it's called in windows, any way I can know why the call does not work?
: Any other hints? Please help! :-)
: Daniel
:
:
: s_hwndVisu = CreateWindow(szClassName,
: szWndName,
:
: WS_OVERLAPPEDWINDOW | WS_CLIPCHILDREN,
: 0, 0, 0, 0,
: NULL,
: NULL,
: hInstance,
: NULL);
:
: if (s_hwndVisu != NULL)
: {
: s_hwndEditC = CreateWindow("EDIT",
: "OK",
:
: WS_CHILD | WS_BORDER | ES_CENTER | ES_AUTOHSCROLL,
: 0,
: 0, 0, 0,
:
: s_hwndVisu,
: NULL,
:
: hInstance,
: NULL);
:
: if (s_hwndEditC != NULL)
: {
: if (prevWndProc == 0)
: prevWndProc = (int(*)())GetWindowLong(s_hwndEditC,
: GWL_WNDPROC);
: SetWindowLong(s_hwndEditC, GWL_WNDPROC,
: (LONG)(WNDPROC)EditControlProc);
: }
: }
:
: --
: 3S-Smart Software Solutions GmbH
: Fischerstr.19, D-87435 Kempten
: Tel. ++49-(0)831-54031-72
: Fax ++49-(0)831-54031-50
: email: ####@####.####
: web: http://www.3s-software.com
:
:
:
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