Missing files? about wmfpreview HOT 3 CLOSED

Those files are generated when you use Visual Studio to open the solution file and build the project.
This is from the readme:

WMFPreview.idl
This file contains the IDL definitions of the type library, the interfaces
and co-classes defined in your project.
This file will be processed by the MIDL compiler to generate:
C++ interface definitions and GUID declarations (WMFPreview.h)
GUID definitions (WMFPreview_i.c)
A type library (WMFPreview.tlb)
Marshaling code (WMFPreview_p.c and dlldata.c)

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Thanks a lot, I'm trying to learn about windows shell preview handle, I've found some other projects, but they used a lot of external libraries, this was the first one I found so far that doesn't make use of other libraries like IUP, IM, WX and others.
To start learning I will write one for viewing .TGA files and then for .OBJ files.
I've been researching how the preview handle works for a few days, but I haven't found anything that explains how it works.
Only .vdproj files are not working as I am using VS 2019, but this is not a problem.
Thanks.

from wmfpreview.

No problem. If you have questions let me know. Most of the important code for thumbnail drawing is in the WMFPreviewDoc.cpp file. It shouldn't be too difficult to write one for TGA files. Microsoft also has some sample code for shell extensions on MSDN.
The .vdproj files require that you install the installer extension for Visual Studio.

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