using COM dll in a c++ console application

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dear all

i have a dll that contain a COM METHOD functions and i want to use these functions in a c++ console application i searched alot for a tutorial or something to help me but nothing
please can you help me in this

i only have the DLL file no other files(source codes,manifest,............)
i use visual studio 2010

thanks in advance

Posted 26-May-11 12:14pm

Member 7788393

Updated 26-May-11 13:49pm

v3

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2 solutions

Solution 1

The fact that you're writing a console application should be irrelevent. You want to instantiate a COM object and invoke a method.

You can do it the hard way,[^] or let the IDE help you out.[^]

You don't say if you're using managed or unmanaged C++ which will make a big difference, so I can't really point you to a tutorial, but here's a start.[^]

Posted 26-May-11 12:32pm

Yvan Rodrigues

Updated 26-May-11 12:50pm

v2

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Member 7788393 26-May-11 19:32pm

it is unmanaged

Member 7788393 28-May-11 18:44pm

where is the help :D

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barneyman · Accepted Answer · 2011-05-26T14:10:00

Solution 2

if it's got a type library embedded in it, it's fairly easy

// get ATL's client templates
#include <atlcomcli.h>
// import the typelibrary direct from the dll
#import "<name of your com dll here>" raw_interfaces_only no_namespace

That will create a .tlh file in your output directory - have a look at that for the object and interface declaration

then to use that com object

// declare com ptr
CComPtr<IwhateverTheInterfaceIs> comInterfacePtr;
// cocreate an instance
comInterfacePtr.CoCreateInstance(__uuidof(theCoClassFromTLHfile))
// then use methods
comInterfacePtr->Method()

Posted 26-May-11 14:10pm

barneyman

Comments

Member 7788393 26-May-11 20:43pm

thank you barneyman i will try this as soon as possible as i have exams and alot of study and work

Member 7788393 28-May-11 18:34pm

no it is not work no type library embedded in it

barneyman 28-May-11 23:24pm

without an embedded type library, or a standalone tlb file, you're rather snookered ...

makerj 4-Apr-20 23:17pm

#include <atlcomcli.h>

By adding this before first #import directive, intellisense/compile error has been fixed! Thank you @barneyman you saved my day!

And don't foget to call CoInitialize[Ex] before invoking CoCreateInstance method.