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Hi,

I'm trying hooks for the first time and having a bit
of a nightmare.

I basically want to trap when other windows are resized,
moved etc. When i set a WH_CBT hook it runs ok, but never
seems to execute.

When i set WH_CALLWNDPROC my machine goes mad and
i have to reboot, im using VC++6 on win2k bbut had similar experience on
win95.

The code im using is below. It looks OK to me, but obviously it isnt!

Any help would be appreciated.

Cheers

Joe



BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
HWND hWnd;

hInst = hInstance; // Store instance handle in our global variable

hWnd = CreateWindow(szWindowClass, szTitle, WS_POPUP|WS_SYSMENU,
0, -200, ww, hh, NULL, NULL, hInstance, NULL);

if (!hWnd)
{
return FALSE;
}
ShowWindow(hWnd, nCmdShow);
UpdateWindow(hWnd);

hhk = SetWindowsHookEx(WH_CBT,CallWndProc,hInstance,0);
// hhk = SetWindowsHookEx(WH_CALLWNDPROC,CallWndProc,hInsta nce,0);
theWnd = hWnd;

return TRUE;

}

LRESULT CALLBACK CallWndProc(
int nCode, // hook code
WPARAM wParam, // depends on hook code
LPARAM lParam // depends on hook code
)
{
if(nCode>=0)
{
grabit=2;
}

return CallNextHookEx(hhk, nCode, wParam, lParam );

}


--
.--------------------.
| |
| Good Evening.... | .--.--.
| | .; .;|;. ;.
`-------------. ,---' .;_;' `;_;.
\| ; ;' `; ;
\ ;;'.--.___.--.`;;
;-( o )=( o )-;
( `--' | `--' )
\| . . |/
........... . .:::::. . .______
/ . '---` . '\
.' `. .' \
| ____,.- . | `.....' | _______ |
| ,-' \ /|\'' \.-- |
| / \.'\ /,'. \. - |
| /| ` `\ / \ |
| ,/ _ '/ '\ |
,-' ,-. |o '
/ '| | | | \
/ ,/| |o | \ `
| .' | |.' |. \ \
________/ .'____|________________________||__`. `__________
( \ ) / )
'-. '-. ( .-` .-`
'-. .-'--.__. .-.__.--`-. .-`
'-..' \--' : ~`:=,`- `..-`
\ .. \\ |`-'|`-, /
\\\\\\\) | |`-'/.'/
\)\)\\ `-' `-'
`

kid joe <> writes:

> I basically want to trap when other windows are resized,
> moved etc. When i set a WH_CBT hook it runs ok, but never
> seems to execute.
>
> When i set WH_CALLWNDPROC my machine goes mad and
> i have to reboot, im using VC++6 on win2k bbut had similar experience on
> win95.

This is Windows-specific, so you will probably get better
responses if you ask about it in a Windows programming newsgroup.
--
"C has its problems, but a language designed from scratch would have some too,
and we know C's problems."
--Bjarne Stroustrup

On 2008-11-21, Ben Pfaff <> wrote:
>
> This is Windows-specific, so you will probably get better
> responses if you ask about it in a Windows programming newsgroup.

It also looks suspiciously like C++ to me as well.

--
Andrew Smallshaw

"Andrew Smallshaw" <> wrote in message
news:...
> On 2008-11-21, Ben Pfaff <> wrote:
>>
>> This is Windows-specific, so you will probably get better
>> responses if you ask about it in a Windows programming newsgroup.
>
> It also looks suspiciously like C++ to me as well.

Probably not; I could understand the code.

--
Bartc

On 2008-11-24, Bartc <> wrote:
>
> "Andrew Smallshaw" <> wrote in message
> news:...
>>
>> It also looks suspiciously like C++ to me as well.
>
> Probably not; I could understand the code.

It is possible that this is a C99 program, but if so there are an
awful lot of typedefs and a misleading reference to classes. I
suspect it may actually be C+. This is a curious language common
amongst Windows programmers that uses all the syntactic crud of
C++ while having the structure of a straight C program. This
negates any of the benefits of using C++ is the first place.

--
Andrew Smallshaw