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diff --git a/qtinterface/interface_tqt3/tqmap.cpp b/qtinterface/interface_tqt3/tqmap.cpp
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+/*
+
+Copyright (C) 2010 Timothy Pearson <kb9vqf@pearsoncomputing.net>
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public
+License as published by the Free Software Foundation; either
+version 2 of the License, or (at your option) any later version.
+
+This library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public License
+along with this library; see the file COPYING.LIB. If not, write to
+the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+Boston, MA 02110-1301, USA.
+
+*/
+
+#include <tqt.h>
+#include <tntqmap.h>
+
+#ifdef USE_QT4
+
+typedef TQMapNodeBase* NodePtr;
+typedef TQMapNodeBase Node;
+
+
+void TQMapPrivateBase::rotateLeft( NodePtr x, NodePtr& root)
+{
+ NodePtr y = x->right;
+ x->right = y->left;
+ if (y->left !=0)
+ y->left->parent = x;
+ y->parent = x->parent;
+ if (x == root)
+ root = y;
+ else if (x == x->parent->left)
+ x->parent->left = y;
+ else
+ x->parent->right = y;
+ y->left = x;
+ x->parent = y;
+}
+
+
+void TQMapPrivateBase::rotateRight( NodePtr x, NodePtr& root )
+{
+ NodePtr y = x->left;
+ x->left = y->right;
+ if (y->right != 0)
+ y->right->parent = x;
+ y->parent = x->parent;
+ if (x == root)
+ root = y;
+ else if (x == x->parent->right)
+ x->parent->right = y;
+ else
+ x->parent->left = y;
+ y->right = x;
+ x->parent = y;
+}
+
+
+void TQMapPrivateBase::rebalance( NodePtr x, NodePtr& root)
+{
+ x->color = Node::Red;
+ while ( x != root && x->parent->color == Node::Red ) {
+ if ( x->parent == x->parent->parent->left ) {
+ NodePtr y = x->parent->parent->right;
+ if (y && y->color == Node::Red) {
+ x->parent->color = Node::Black;
+ y->color = Node::Black;
+ x->parent->parent->color = Node::Red;
+ x = x->parent->parent;
+ } else {
+ if (x == x->parent->right) {
+ x = x->parent;
+ rotateLeft( x, root );
+ }
+ x->parent->color = Node::Black;
+ x->parent->parent->color = Node::Red;
+ rotateRight (x->parent->parent, root );
+ }
+ } else {
+ NodePtr y = x->parent->parent->left;
+ if ( y && y->color == Node::Red ) {
+ x->parent->color = Node::Black;
+ y->color = Node::Black;
+ x->parent->parent->color = Node::Red;
+ x = x->parent->parent;
+ } else {
+ if (x == x->parent->left) {
+ x = x->parent;
+ rotateRight( x, root );
+ }
+ x->parent->color = Node::Black;
+ x->parent->parent->color = Node::Red;
+ rotateLeft( x->parent->parent, root );
+ }
+ }
+ }
+ root->color = Node::Black;
+}
+
+
+NodePtr TQMapPrivateBase::removeAndRebalance( NodePtr z, NodePtr& root,
+ NodePtr& leftmost,
+ NodePtr& rightmost )
+{
+ NodePtr y = z;
+ NodePtr x;
+ NodePtr x_parent;
+ if (y->left == 0) {
+ x = y->right;
+ } else {
+ if (y->right == 0)
+ x = y->left;
+ else
+ {
+ y = y->right;
+ while (y->left != 0)
+ y = y->left;
+ x = y->right;
+ }
+ }
+ if (y != z) {
+ z->left->parent = y;
+ y->left = z->left;
+ if (y != z->right) {
+ x_parent = y->parent;
+ if (x)
+ x->parent = y->parent;
+ y->parent->left = x;
+ y->right = z->right;
+ z->right->parent = y;
+ } else {
+ x_parent = y;
+ }
+ if (root == z)
+ root = y;
+ else if (z->parent->left == z)
+ z->parent->left = y;
+ else
+ z->parent->right = y;
+ y->parent = z->parent;
+ // Swap the colors
+ Node::Color c = y->color;
+ y->color = z->color;
+ z->color = c;
+ y = z;
+ } else {
+ x_parent = y->parent;
+ if (x)
+ x->parent = y->parent;
+ if (root == z)
+ root = x;
+ else if (z->parent->left == z)
+ z->parent->left = x;
+ else
+ z->parent->right = x;
+ if ( leftmost == z ) {
+ if (z->right == 0)
+ leftmost = z->parent;
+ else
+ leftmost = x->minimum();
+ }
+ if (rightmost == z) {
+ if (z->left == 0)
+ rightmost = z->parent;
+ else
+ rightmost = x->maximum();
+ }
+ }
+ if (y->color != Node::Red) {
+ while (x != root && (x == 0 || x->color == Node::Black)) {
+ if (x == x_parent->left) {
+ NodePtr w = x_parent->right;
+ if (w->color == Node::Red) {
+ w->color = Node::Black;
+ x_parent->color = Node::Red;
+ rotateLeft(x_parent, root);
+ w = x_parent->right;
+ }
+ if ((w->left == 0 || w->left->color == Node::Black) &&
+ (w->right == 0 || w->right->color == Node::Black)) {
+ w->color = Node::Red;
+ x = x_parent;
+ x_parent = x_parent->parent;
+ } else {
+ if (w->right == 0 || w->right->color == Node::Black) {
+ if (w->left)
+ w->left->color = Node::Black;
+ w->color = Node::Red;
+ rotateRight(w, root);
+ w = x_parent->right;
+ }
+ w->color = x_parent->color;
+ x_parent->color = Node::Black;
+ if (w->right)
+ w->right->color = Node::Black;
+ rotateLeft(x_parent, root);
+ break;
+ }
+ } else {
+ NodePtr w = x_parent->left;
+ if (w->color == Node::Red) {
+ w->color = Node::Black;
+ x_parent->color = Node::Red;
+ rotateRight(x_parent, root);
+ w = x_parent->left;
+ }
+ if ((w->right == 0 || w->right->color == Node::Black) &&
+ (w->left == 0 || w->left->color == Node::Black)) {
+ w->color = Node::Red;
+ x = x_parent;
+ x_parent = x_parent->parent;
+ } else {
+ if (w->left == 0 || w->left->color == Node::Black) {
+ if (w->right)
+ w->right->color = Node::Black;
+ w->color = Node::Red;
+ rotateLeft(w, root);
+ w = x_parent->left;
+ }
+ w->color = x_parent->color;
+ x_parent->color = Node::Black;
+ if (w->left)
+ w->left->color = Node::Black;
+ rotateRight(x_parent, root);
+ break;
+ }
+ }
+ }
+ if (x)
+ x->color = Node::Black;
+ }
+ return y;
+}
+
+#endif // USE_QT4 \ No newline at end of file