If the header file is not provided, COM is used in C ++.

Source: Internet
Author: User

If the header file is not provided, COM is used in C ++.

When testing com with CPP, use the _ I. C and *. H files generated by midl. This article demonstrates using the com method with CPP without these files.

The test project must be an MFC project (the process of creating an MFC project is omitted ).

1. Add the typelib class:

2. Add the test code:

Void cmfcclientdlg: onbnclickedok () {cfirstcoclx t; IID; // CLSID can be obtained from *. for more information, see msdn index-# import directiveclsidfromstring (L "{a6f67b5b-f33e-40fd-8821-0118bfcb214f}", & ID); T. createdispatch (ID); long a, B, c; a = B = c = 3; T. addfn (a, B, & C); T. put_num (45); A = T. get_num (); cdialogex: onok ();}
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