How to access DLL methods n variables without .h n .lib file??

[radishcarrot]

Hi, I try to access the QuickTime COM/ActiveX DLL file, QTOControl.dll
in my VC++ codes as follows:

HINSTANCE OTOControlLib = LoadLibrary("QTOControl.dll");

But how do I access the methods in the dll file?? The problem lies in
that QuickTime did not provide the .h or .lib file for the DLL file??

Any solution??
Thanks alot
:)

[Ian Collins]

radishcarrot wrote:

Hi, I try to access the QuickTime COM/ActiveX DLL file, QTOControl.dll
in my VC++ codes as follows:

HINSTANCE OTOControlLib = LoadLibrary("QTOControl.dll");

But how do I access the methods in the dll file?? The problem lies in
that QuickTime did not provide the .h or .lib file for the DLL file??

Any solution??

Try a windows programming group, this it OT here.

--
Ian Collins.

[Uday Bidkar]

radishcarrot wrote:

Hi, I try to access the QuickTime COM/ActiveX DLL file, QTOControl.dll
in my VC++ codes as follows:

HINSTANCE OTOControlLib = LoadLibrary("QTOControl.dll");

But how do I access the methods in the dll file?? The problem lies in
that QuickTime did not provide the .h or .lib file for the DLL file??

Any solution??
Thanks alot
:)

Hi
GetProcAddress( OTOControlLib , "FunctionName" ) will return the
address of the function named "FunctionName" inside the DLL if it has
been exported by the DLL. But you must know the prototype of function
"FuncionName" in order to store and/or use the pointer returned by
GetProcAddress.
You can see the functions exported by a DLL using dependancy walker

Regads,
Uday Bidkar

[Alf P. Steinbach]

* Uday Bidkar:
[off-topic answer to off-topic posting]

Please read the FAQ on what to post and not to post in this group.

Thank you.

--
A: Because it messes up the order in which people normally read text.
Q: Why is it such a bad thing?
A: Top-posting.
Q: What is the most annoying thing on usenet and in e-mail?

[radishcarrot]

Uday Bidkar wrote:

radishcarrot wrote:

Hi, I try to access the QuickTime COM/ActiveX DLL file, QTOControl.dll
in my VC++ codes as follows:

HINSTANCE OTOControlLib = LoadLibrary("QTOControl.dll");

But how do I access the methods in the dll file?? The problem lies in
that QuickTime did not provide the .h or .lib file for the DLL file??

Any solution??
Thanks alot
:)

Hi
GetProcAddress( OTOControlLib , "FunctionName" ) will return the
address of the function named "FunctionName" inside the DLL if it has
been exported by the DLL. But you must know the prototype of function
"FuncionName" in order to store and/or use the pointer returned by
GetProcAddress.
You can see the functions exported by a DLL using dependancy walker

Regads,
Uday Bidkar

Thanks for the reply.
I tried the GetProcAddress but what if the function name is input
parameter?? then how do I go about doing it?

Anyway I thought this is c++ programming.. m I wrong?? Cos I just
started programming in C++ and thought that LoadLibrary, GetProcAddress
etc are C++ programming syntax.
Sorry

[Ian Collins]

radishcarrot wrote:

>
Thanks for the reply.
I tried the GetProcAddress but what if the function name is input
parameter?? then how do I go about doing it?

Anyway I thought this is c++ programming.. m I wrong?? Cos I just
started programming in C++ and thought that LoadLibrary, GetProcAddress
etc are C++ programming syntax.
Sorry

It a C++ language group, we discuss the core language as defined by the
standard. Anything platform specific (DLLs for example) is of topic and
you'll get better advice on a platform specific group.

--
Ian Collins.

[Alf P. Steinbach]

* radishcarrot:

>
Anyway I thought this is c++ programming.. m I wrong??

Yes.

See this group's FAQ item

"[To] Which newsgroup should I post my questions?"

currently at <url:
http://www.parashift.com/c++-faq-lite/how-to-post.html#faq-5.9>

Cos I just
started programming in C++ and thought that LoadLibrary, GetProcAddress
etc are C++ programming syntax.

No, they're Windows API functions, accesible from any language that
supports them.

Try [comp.os.ms-windows.programmer.win32].

Sorry

--
A: Because it messes up the order in which people normally read text.
Q: Why is it such a bad thing?
A: Top-posting.
Q: What is the most annoying thing on usenet and in e-mail?