Question

I try to use wxMkdir function to create a new directory in my c++ program. The directory
/home/test/Documents/MATLAB/mydata/demo already exists. But the following code

wxString dataDirectory = wxT("/home/test/Documents/MATLAB/mydata/demo/A");

if(! wxDirExists(dataDirectory))
{
    wxMkdir(dataDirectory); 

}

will pop up a runtime error dialog saying that

Directory ‘/home/test/Documents/MATLAB/mydata/demo/A’ couldn’t be created (error2: No such file or directory)

and the directory A under directory demo will not be created. However, if I change the desired directory to /home/test/Documents/MATLAB/mydata/A, everything works.

So is there a maximum directory depth for wxMkdir in the Ubuntu implementation of wxWidgets? This problem is not seen under Mac, however. I searched the web and couldn’t get anything meaningful. Anyone has a better idea?

Answer 1

If mkdir fails with a “No such file or directory” error, it usually means that the parent directory doesn’t exist (or is a dangling symlink). Presumably the same would apply to wxMkdir.

Does /home/test/Documents/MATLAB/mydata/demo already exist? And just to be sure, is it a directory?

(If that’s not the problem, I’ll delete this answer and add it as a comment.)