Working Directory woes

[PhilG57]

I have a Windows project with multiple versions kept in separate directories.  I edit and update in one directory and when those changes look and test good, I move them to another, separate, directory of more stable code.

In any of those project versions, when I open a file with GetOpenFileName(), the directory shown from which to select a file to open, is the directory last used by Pelles C.  For example, in the GetOpenFileName() dialog, if I change to a different directory and select a file from there, that directory becomes the 'default' location shown by GetOpenFileName() the next time it is called.

So far, so good I think.  What I don't understand is with the opening of a new or different project using the same instance of Pelles C, or especially with a new clean instance of Pelles C, why does the default GetOpenFileName() use what I selected before and not the default directory listed in my project's options. As part of the initialization code, I do execute a GetCurrentDirectory() followed by a SetCurrentDirectory() to no avail.

As always, thanks in advance.

[PhilG57]

Stack Overflow says the directory last selected by GetOpenFileName is stored in the registry and used the next time GetOpenFileName is called.  This seems to be the case, even though I make a point to reset the working directory to that obtained earlier in my code.  As also suggested there, I added the flag "OFN_NOCHANGEDIR" to the GetOpenFileName call with no change in behavior.

I do think this is a user caused error but have yet to determine where I went wrong.