Re: Hooks

Thanks for replies.

Now I have set the hook I am getting those messages.

everything Implemented in DLL.
I have written a call for displaying messages using OutputDebugString API.
But I need all messages should be written to a file.
while Installing I am able to create a file and able to write also.
But In call back function of HOOKProcedure I am not able to access the file
handle and not able to write to file.

file handle is global. (it is giving invalid handle)

Kindly suggest some solution for these.
I need to write all the hooked message to a file.
--
WM_QUIT
RLN


"Gary Chanson" wrote:

You will probably need several hooks to intercept all of them. Most of
them will probably require a WH_CALLWNDPROC hook. Study the information in
the MSDN entry for SetWindowsHookEx and experiment. ;)

--

- Gary Chanson (Windows SDK MVP)
- Abolish Public Schools



"RLN" <RLN@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:F017B784-6586-4052-8F94-F3DB97412E73@xxxxxxxxxxxxxxxx
I need to monitor the following messages.

Button/EditBox /etc... Messages Simply All control Messages.
Regular Window Messages.
Common Control Messages.
DialogBox Messages
DialogBox/Messages Box Notifications (Example while entering text in
editbox
it is popping a message box in the middle - I need to catch this also)


--
WM_QUIT
RLN


"Gary Chanson" wrote:

For what? The hook type depends on what type of messages you want
to
intercept.

--

- Gary Chanson (Windows SDK MVP)
- Abolish Public Schools



"RLN" <RLN@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:E1350FE2-AA07-44EA-96B1-D72B2D0813EB@xxxxxxxxxxxxxxxx
ok.

Which type hook I need to use for this?
--
WM_QUIT
RLN


"Gary Chanson" wrote:

No. That ID identifies the thread which created that window.
That's
all. If additional threads create other windows, you need to get
those
IDs
separately.

--

- Gary Chanson (Windows SDK MVP)
- Abolish Public Schools



"RLN" <RLN@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:682A4063-4421-4A88-A8C8-DCFBEE818A22@xxxxxxxxxxxxxxxx
ok I agree.
But GetWindowThreadId returns one ThreadId
Is that thread id is possible for these concept (all child windows
of
Internet Explorer)?

--
WM_QUIT
RLN


"Gary Chanson" wrote:


"RLN" <RLN@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:64F7CA66-A68C-4DCC-B1B1-8DEDE45890B9@xxxxxxxxxxxxxxxx
Consider In this Example targeted Window is Internet Explorer
Window.

If I set Hook for Internet Explorer Window.

Shall I able to Catch all the message of the all child
windows?

Is it possible to monitor messages of the Combo Box (which is
child of
Internet Explorer )?

I need to monitor all the message related to the all child
windows?

I told here only one child window
But it may be any number of child windows ?

Is it necessary to set hook for each seperate child window?

or
Targeted window is enough for hook ?

I need to log all the child windows data changes ( when
message
occurs
data
will change. so i need to log event and data)

Windows hooks are not window specific, they are thread
specific.
When
you set a hook on Internet Explorer, you are probably setting a
hook
on
the
thread which created the main IE window. Your hook handler will
intercept
all messages (of the type for the specific hook) to that thread.
If
a
different thread creates a child window, your hook handler will
not
intercept its messages.

--

- Gary Chanson (Windows SDK MVP)
- Abolish Public Schools














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