Remove Windows CE support

Windows CE doesn't seem to be supported by Microsoft any longer. Last CE
release was in early 2013 and the PocketPC and Smartphone targets supported by
wxWidgets are long gone.

The build files where already removed in an earlier cleanup this commit
removes all files, every #ifdef and all documentation regarding the Windows CE
support.

Closes https://github.com/wxWidgets/wxWidgets/pull/81

src/generic/dirctrlg.cpp

@@ -102,12 +102,7 @@ size_t wxGetAvailableDrives(wxArrayString &paths, wxArrayString &names, wxArrayI
 {
 #ifdef wxHAS_FILESYSTEM_VOLUMES
 
-#ifdef __WXWINCE__
-    // No logical drives; return "\"
-    paths.Add(wxT("\\"));
-    names.Add(wxT("\\"));
-    icon_ids.Add(wxFileIconsTable::computer);
-#elif defined(__WIN32__) && wxUSE_FSVOLUME
+#if defined(__WIN32__) && wxUSE_FSVOLUME
     // TODO: this code (using wxFSVolumeBase) should be used for all platforms
     //       but unfortunately wxFSVolumeBase is not implemented everywhere
     const wxArrayString as = wxFSVolumeBase::GetVolumes();
@@ -228,11 +223,9 @@ bool wxIsDriveAvailable(const wxString& dirName)
 
 #elif defined(__WINDOWS__)
 
-int setdrive(int WXUNUSED_IN_WINCE(drive))
+int setdrive(int drive)
 {
-#ifdef __WXWINCE__
-    return 0;
-#elif defined(wxHAS_DRIVE_FUNCTIONS)
+#if defined(wxHAS_DRIVE_FUNCTIONS)
     return _chdrive(drive);
 #else
     wxChar  newdrive[4];
@@ -254,11 +247,8 @@ int setdrive(int WXUNUSED_IN_WINCE(drive))
 #endif // !GNUWIN32
 }
 
-bool wxIsDriveAvailable(const wxString& WXUNUSED_IN_WINCE(dirName))
+bool wxIsDriveAvailable(const wxString& dirName)
 {
-#ifdef __WXWINCE__
-    return false;
-#else
 #ifdef __WIN32__
     UINT errorMode = SetErrorMode(SEM_FAILCRITICALERRORS | SEM_NOOPENFILEERRORBOX);
 #endif
@@ -288,7 +278,6 @@ bool wxIsDriveAvailable(const wxString& WXUNUSED_IN_WINCE(dirName))
 #endif
 
     return success;
-#endif
 }
 #endif // __WINDOWS__
 
@@ -416,11 +405,7 @@ bool wxGenericDirCtrl::Create(wxWindow *parent,
 
     long treeStyle = wxTR_HAS_BUTTONS;
 
-    // On Windows CE, if you hide the root, you get a crash when
-    // attempting to access data for children of the root item.
-#ifndef __WXWINCE__
     treeStyle |= wxTR_HIDE_ROOT;
-#endif
 
 #ifdef __WXGTK20__
     treeStyle |= wxTR_NO_LINES;
@@ -717,7 +702,7 @@ void wxGenericDirCtrl::PopulateNode(wxTreeItemId parentId)
 
     wxString dirName(data->m_path);
 
-#if (defined(__WINDOWS__) && !defined(__WXWINCE__)) || defined(__DOS__)
+#if defined(__WINDOWS__) || defined(__DOS__)
     // Check if this is a root directory and if so,
     // whether the drive is available.
     if (!wxIsDriveAvailable(dirName))