title: What is the lpstr filter for folders?
body: <p>I am trying to open a dialog box where the user selects a certain folder on pure C++, no .Net framework or C#, and am struggling to find how the lpstr would filter everything but directories. I am currently using the OPENFILENAME function. I tried filtering to .dir, but it does not work. Anyone know the actual extension or any solutons?</p>