+static
+int wxCALLBACK wxFileDataSizeCompare(long data1, long data2, long sortOrder)
+{
+ wxFileData *fd1 = (wxFileData *)wxUIntToPtr(data1);
+ wxFileData *fd2 = (wxFileData *)wxUIntToPtr(data2);
+
+ if (fd1->GetFileName() == wxT(".."))
+ return -sortOrder;
+ if (fd2->GetFileName() == wxT(".."))
+ return sortOrder;
+ if (fd1->IsDir() && !fd2->IsDir())
+ return -sortOrder;
+ if (fd2->IsDir() && !fd1->IsDir())
+ return sortOrder;
+ if (fd1->IsLink() && !fd2->IsLink())
+ return -sortOrder;
+ if (fd2->IsLink() && !fd1->IsLink())
+ return sortOrder;
+
+ return fd1->GetSize() > fd2->GetSize() ? sortOrder : -sortOrder;
+}
+
+static
+int wxCALLBACK wxFileDataTypeCompare(long data1, long data2, long sortOrder)
+{
+ wxFileData *fd1 = (wxFileData *)wxUIntToPtr(data1);
+ wxFileData *fd2 = (wxFileData *)wxUIntToPtr(data2);
+
+ if (fd1->GetFileName() == wxT(".."))
+ return -sortOrder;
+ if (fd2->GetFileName() == wxT(".."))
+ return sortOrder;
+ if (fd1->IsDir() && !fd2->IsDir())
+ return -sortOrder;
+ if (fd2->IsDir() && !fd1->IsDir())
+ return sortOrder;
+ if (fd1->IsLink() && !fd2->IsLink())
+ return -sortOrder;
+ if (fd2->IsLink() && !fd1->IsLink())
+ return sortOrder;
+
+ return sortOrder*wxStrcmp( fd1->GetFileType(), fd2->GetFileType() );
+}
+
+static
+int wxCALLBACK wxFileDataTimeCompare(long data1, long data2, long sortOrder)
+{
+ wxFileData *fd1 = (wxFileData *)wxUIntToPtr(data1);
+ wxFileData *fd2 = (wxFileData *)wxUIntToPtr(data2);
+
+ if (fd1->GetFileName() == wxT(".."))
+ return -sortOrder;
+ if (fd2->GetFileName() == wxT(".."))
+ return sortOrder;
+ if (fd1->IsDir() && !fd2->IsDir())
+ return -sortOrder;
+ if (fd2->IsDir() && !fd1->IsDir())
+ return sortOrder;
+
+ return fd1->GetDateTime().IsLaterThan(fd2->GetDateTime()) ? sortOrder : -sortOrder;
+}
+
+#if defined(__WXWINCE__)
+#define IsTopMostDir(dir) (dir == wxT("\\") || dir == wxT("/"))
+#elif (defined(__DOS__) || defined(__WINDOWS__) || defined (__OS2__))
+#define IsTopMostDir(dir) (dir.empty())
+#else
+#define IsTopMostDir(dir) (dir == wxT("/"))
+#endif
+
+// defined in src/generic/dirctrlg.cpp
+extern size_t wxGetAvailableDrives(wxArrayString &paths, wxArrayString &names, wxArrayInt &icon_ids);
+