Making a list of folders in a directory with wxWidgets

Question

I\'m making an application with wxWidgets that has a listbox in it. I want to get the current working directory of the application, and in that listbox, list all the folders

Answer 1

For listing all the folder names in a list,

#include "wx/dirdlg.h"

wxDirDialog dialog(parent, wxT("Testing directory picker"), cwd, wxDD_NEW_DIR_BUTTON);
if (dialog.ShowModal() == wxID_OK)
{
     wxString path = dialog.GetPath();
     wxMessageBox(path);
}

Note : You can use path in any way you wish, here it just displays in a message box.

But of course if you want to display folder names in your custom dialog to your user, you can use RyanWilcox solution.

EDIT: In your code you have not created dirList (or you have posted incomplete code)

wxArrayString MainWindow::createFolderList()
{
    wxDir dir(wxGetCwd());
    if ( !dir.IsOpened() )
         ;//handle this error here

    wxString dirName = dir.GetName();
    wxArrayString dirList;

    dir.GetAllFiles(dirName, &dirList, wxEmptyString, wxDIR_DIRS | wxDIR_FILES);

    //Note that next statement is optional
    dirList.shrink();

    return dirList;
}

Your implementation might differ, but I have adapted this code, from my own working code.

Answer 2

For getting only the subdirectories without recursion the answer is right in the documentation of the wxDir class: http://docs.wxwidgets.org/trunk/classwx_dir.html

wxDir dir("C:/myDir");
if(!dir.IsOpened())
{
  // deal with the error here, wxDir would already 
  // log an error message explaining the exact reason of the failure.
  return;
}
wxString filename;
bool cont = dir.GetFirst(&filename, wxEmptyString, wxDIR_DIRS);
while(cont)
{
  printf("%s\n", filename.c_str());
  cont = dir.GetNext(&filename);
}

For recursion i use a Traverse sub-class: http://docs.wxwidgets.org/trunk/classwx_dir_traverser.html

The trick is only add to the list what you need, this is a case for directories only:

class wxDirTraverserSimple : public wxDirTraverser
{
  public:
    wxDirTraverserSimple(wxArrayString& files) : m_files(files){}
    virtual wxDirTraverseResult OnFile(const wxString& filename)
    {
      return wxDIR_CONTINUE;
    }
    virtual wxDirTraverseResult OnDir(const wxString& dirname)
    {
      m_files.Add(dirname);
      return wxDIR_CONTINUE;
    }
  private:
    wxArrayString& m_files;
};

Answer 3

You could use wxDirTraverser - you implement a subclass and override some methods which will be called depending if the item is a file or directory.

You could also use wxDir::GetAllFiles, which will return a wxArray (which might be more convient for you, displaying it in a list).