🚀 go-pugleaf

Here is a technical problem which I think solvable but
which I cannot find the answer to in the Windows SDK
documentation or any other reference.

I would like to place one of my own supplied functions
in between an application and the Windows GDI system.

For instance I would like to place my own function
lets say called ERIC_TextOut into a DLL and have
it be called when a function actually makes a Windows
TextOut call.

What my function will do in turn is take the parameters
that it is passed (which is the same as the actual
TextOut function parameters) and pass them on to the
real GDI TextOut function.

I think this can be done since I think this is what
programs such as Carbon Copy for Windows do. The have
on the remote system such a DLL (or maybe it is a
device driver or something) and when an application on the
remote system make a call to TextOut, they first get
the information, send it through the communications
link and on the local system they have a supporting
application which is making a TextOut call locally.

I would hate to get into device drivers for this and thought
that through some mechanism of sub-classing or such that it
could be done.

I know that I can set a Windows hook for certain events, but they
do not seem to include any/all of the GDI functions, only a sub-set
such as CreateWindows or certain messages.

All inputs welcomed...

If the problem space needs further clarification, post it here
and I will to better define the problem.


-- Thanks, Eric

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-- Eric Perkins			E-Mail : perkins@tallis.enet.dec.com
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