如何在 Windows 应用程序中捕获 ossPrint？

Question

We are using an older version of the ASN.1/C toolkit (v9), and I would like to print selected PDUs to a window in a C++/MFC application.

I know ossOpenTraceWindow() exists but as I understand this opens a new window and I want to write to my own GUI.

The documentation for ossPrintXXX functions talks about how they are replacements for printf / fprintf and mention that calling with world==NULL will directly call these functions. But I can't see how I can 'connect the dots'.

How can I set things up so that calling ossPrintXXX gives me some characters I can read and display in MFC, since I don't know exactly what is happening under the hood (closed source as far as I known)

note: in later versions there is a function ossPrintPDUToBuffer() but this is not available in v9.

Answer 1

Since this is a question about a commercial vendor's Tool, your question is better addressed directly to their technical support department. I notice there is a knowledge base question on the OSS website that might help you in this case. Please see the following URL: https://www.oss.com/asn1/knowledge-center/asn1-c/asn1c-print-to-memory-buffer-instead-of-window.html