diff --git a/src/MainWidgetBase.ui b/src/MainWidgetBase.ui
index 93cf508..d1d1323 100644
--- a/src/MainWidgetBase.ui
+++ b/src/MainWidgetBase.ui
@@ -37,7 +37,7 @@
                     <verstretch>0</verstretch>
                 </sizepolicy>
             </property>
-            <property name="maximumSize">
+            <property name="tqmaximumSize">
                 <size>
                     <width>800</width>
                     <height>600</height>
@@ -59,7 +59,7 @@
         </widget>
         <widget class="TQLayoutWidget">
             <property name="name">
-                <cstring>layout7</cstring>
+                <cstring>tqlayout7</cstring>
             </property>
             <vbox>
                 <property name="name">
@@ -588,7 +588,7 @@ PostScript</string>
                                                                     </property>
                                                                     <widget class="TQLayoutWidget" row="0" column="0">
                                                                         <property name="name">
-                                                                            <cstring>layout3</cstring>
+                                                                            <cstring>tqlayout3</cstring>
                                                                         </property>
                                                                         <vbox>
                                                                             <property name="name">
@@ -620,7 +620,7 @@ PostScript</string>
                                                                     </widget>
                                                                     <widget class="TQLayoutWidget" row="0" column="1">
                                                                         <property name="name">
-                                                                            <cstring>layout4</cstring>
+                                                                            <cstring>tqlayout4</cstring>
                                                                         </property>
                                                                         <grid>
                                                                             <property name="name">
@@ -735,7 +735,7 @@ PostScript</string>
                                                         <property name="sizeType">
                                                             <enum>Expanding</enum>
                                                         </property>
-                                                        <property name="sizeHint">
+                                                        <property name="tqsizeHint">
                                                             <size>
                                                                 <width>20</width>
                                                                 <height>40</height>
@@ -752,7 +752,7 @@ PostScript</string>
                                                         <property name="sizeType">
                                                             <enum>Expanding</enum>
                                                         </property>
-                                                        <property name="sizeHint">
+                                                        <property name="tqsizeHint">
                                                             <size>
                                                                 <width>20</width>
                                                                 <height>40</height>
@@ -769,7 +769,7 @@ PostScript</string>
                                                         <property name="sizeType">
                                                             <enum>Expanding</enum>
                                                         </property>
-                                                        <property name="sizeHint">
+                                                        <property name="tqsizeHint">
                                                             <size>
                                                                 <width>40</width>
                                                                 <height>20</height>
@@ -786,7 +786,7 @@ PostScript</string>
                                                         <property name="sizeType">
                                                             <enum>Expanding</enum>
                                                         </property>
-                                                        <property name="sizeHint">
+                                                        <property name="tqsizeHint">
                                                             <size>
                                                                 <width>40</width>
                                                                 <height>20</height>
@@ -806,7 +806,7 @@ PostScript</string>
                                             <property name="sizeType">
                                                 <enum>Expanding</enum>
                                             </property>
-                                            <property name="sizeHint">
+                                            <property name="tqsizeHint">
                                                 <size>
                                                     <width>20</width>
                                                     <height>16</height>
@@ -836,7 +836,7 @@ PostScript</string>
                                             <property name="sizeType">
                                                 <enum>Expanding</enum>
                                             </property>
-                                            <property name="sizeHint">
+                                            <property name="tqsizeHint">
                                                 <size>
                                                     <width>20</width>
                                                     <height>297</height>
@@ -1092,7 +1092,7 @@ decomposition</string>
                                                     <property name="sizeType">
                                                         <enum>Expanding</enum>
                                                     </property>
-                                                    <property name="sizeHint">
+                                                    <property name="tqsizeHint">
                                                         <size>
                                                             <width>80</width>
                                                             <height>31</height>
@@ -1109,7 +1109,7 @@ decomposition</string>
                                                     <property name="sizeType">
                                                         <enum>Expanding</enum>
                                                     </property>
-                                                    <property name="sizeHint">
+                                                    <property name="tqsizeHint">
                                                         <size>
                                                             <width>80</width>
                                                             <height>31</height>
@@ -1154,7 +1154,7 @@ decomposition</string>
                                                     <property name="sizeType">
                                                         <enum>Expanding</enum>
                                                     </property>
-                                                    <property name="sizeHint">
+                                                    <property name="tqsizeHint">
                                                         <size>
                                                             <width>80</width>
                                                             <height>31</height>
@@ -1195,7 +1195,7 @@ decomposition</string>
                                                     <property name="sizeType">
                                                         <enum>Expanding</enum>
                                                     </property>
-                                                    <property name="sizeHint">
+                                                    <property name="tqsizeHint">
                                                         <size>
                                                             <width>80</width>
                                                             <height>31</height>
@@ -1405,7 +1405,7 @@ pixels in the input</string>
                                             <property name="sizeType">
                                                 <enum>Expanding</enum>
                                             </property>
-                                            <property name="sizeHint">
+                                            <property name="tqsizeHint">
                                                 <size>
                                                     <width>20</width>
                                                     <height>40</height>
@@ -1435,7 +1435,7 @@ pixels in the input</string>
                                             <property name="sizeType">
                                                 <enum>Expanding</enum>
                                             </property>
-                                            <property name="sizeHint">
+                                            <property name="tqsizeHint">
                                                 <size>
                                                     <width>20</width>
                                                     <height>270</height>
@@ -1579,7 +1579,7 @@ pixels in the input</string>
                                                     <property name="sizeType">
                                                         <enum>Expanding</enum>
                                                     </property>
-                                                    <property name="sizeHint">
+                                                    <property name="tqsizeHint">
                                                         <size>
                                                             <width>71</width>
                                                             <height>21</height>
@@ -1596,7 +1596,7 @@ pixels in the input</string>
                                                     <property name="sizeType">
                                                         <enum>Expanding</enum>
                                                     </property>
-                                                    <property name="sizeHint">
+                                                    <property name="tqsizeHint">
                                                         <size>
                                                             <width>71</width>
                                                             <height>21</height>
@@ -1613,7 +1613,7 @@ pixels in the input</string>
                                                     <property name="sizeType">
                                                         <enum>Expanding</enum>
                                                     </property>
-                                                    <property name="sizeHint">
+                                                    <property name="tqsizeHint">
                                                         <size>
                                                             <width>71</width>
                                                             <height>21</height>
@@ -1630,7 +1630,7 @@ pixels in the input</string>
                                                     <property name="sizeType">
                                                         <enum>Expanding</enum>
                                                     </property>
-                                                    <property name="sizeHint">
+                                                    <property name="tqsizeHint">
                                                         <size>
                                                             <width>71</width>
                                                             <height>21</height>
@@ -1950,7 +1950,7 @@ pixels in the input</string>
                                             <property name="sizeType">
                                                 <enum>Expanding</enum>
                                             </property>
-                                            <property name="sizeHint">
+                                            <property name="tqsizeHint">
                                                 <size>
                                                     <width>20</width>
                                                     <height>30</height>
@@ -2100,7 +2100,7 @@ pixels in the input</string>
                                             <property name="sizeType">
                                                 <enum>Expanding</enum>
                                             </property>
-                                            <property name="sizeHint">
+                                            <property name="tqsizeHint">
                                                 <size>
                                                     <width>20</width>
                                                     <height>20</height>
@@ -2342,7 +2342,7 @@ pixels in the input</string>
                                             <property name="sizeType">
                                                 <enum>Expanding</enum>
                                             </property>
-                                            <property name="sizeHint">
+                                            <property name="tqsizeHint">
                                                 <size>
                                                     <width>20</width>
                                                     <height>110</height>
@@ -2446,7 +2446,7 @@ pixels in the input</string>
                 </widget>
                 <widget class="TQLayoutWidget">
                     <property name="name">
-                        <cstring>layout6</cstring>
+                        <cstring>tqlayout6</cstring>
                     </property>
                     <hbox>
                         <property name="name">
@@ -2462,7 +2462,7 @@ pixels in the input</string>
                             <property name="sizeType">
                                 <enum>Expanding</enum>
                             </property>
-                            <property name="sizeHint">
+                            <property name="tqsizeHint">
                                 <size>
                                     <width>40</width>
                                     <height>20</height>
@@ -2513,7 +2513,7 @@ pixels in the input</string>
                             <property name="sizeType">
                                 <enum>Expanding</enum>
                             </property>
-                            <property name="sizeHint">
+                            <property name="tqsizeHint">
                                 <size>
                                     <width>40</width>
                                     <height>20</height>
@@ -2532,7 +2532,7 @@ pixels in the input</string>
                     <property name="sizeType">
                         <enum>Expanding</enum>
                     </property>
-                    <property name="sizeHint">
+                    <property name="tqsizeHint">
                         <size>
                             <width>20</width>
                             <height>16</height>
@@ -2541,7 +2541,7 @@ pixels in the input</string>
                 </spacer>
                 <widget class="TQLayoutWidget">
                     <property name="name">
-                        <cstring>layout3</cstring>
+                        <cstring>tqlayout3</cstring>
                     </property>
                     <hbox>
                         <property name="name">
@@ -2557,7 +2557,7 @@ pixels in the input</string>
                             <property name="sizeType">
                                 <enum>Expanding</enum>
                             </property>
-                            <property name="sizeHint">
+                            <property name="tqsizeHint">
                                 <size>
                                     <width>113</width>
                                     <height>20</height>
@@ -2585,7 +2585,7 @@ pixels in the input</string>
                             <property name="sizeType">
                                 <enum>Expanding</enum>
                             </property>
-                            <property name="sizeHint">
+                            <property name="tqsizeHint">
                                 <size>
                                     <width>60</width>
                                     <height>20</height>
@@ -2607,7 +2607,7 @@ pixels in the input</string>
                 </widget>
                 <widget class="TQLayoutWidget">
                     <property name="name">
-                        <cstring>layout2</cstring>
+                        <cstring>tqlayout2</cstring>
                     </property>
                     <hbox>
                         <property name="name">
diff --git a/src/mainwidget.cpp b/src/mainwidget.cpp
index 202f447..03cca92 100644
--- a/src/mainwidget.cpp
+++ b/src/mainwidget.cpp
@@ -140,7 +140,7 @@ void MainWidget::fileSave() {
     {
       int res;
       if(TQFile::exists(saveFilename))
-        res=KMessageBox::warningYesNo(this, i18n("Overwrite %1 ?").arg(saveFilename));
+        res=KMessageBox::warningYesNo(this, i18n("Overwrite %1 ?").tqarg(saveFilename));
       else
       {
         salva=true;
@@ -165,14 +165,14 @@ void MainWidget::fileSave() {
         emit signalChangeStatusbar(i18n(i18n("Error while saving file")));
         return;
       }
-      emit signalChangeStatusbar(i18n("Saving %1...").arg(m_outputFilename));
+      emit signalChangeStatusbar(i18n("Saving %1...").tqarg(m_outputFilename));
       char ch;
       while(in.get(ch))
         out.put(ch);
       in.close();
       out.close();
       m_changed=false;
-      emit signalChangeStatusbar(i18n("File %1 saved.").arg(m_outputFilename));
+      emit signalChangeStatusbar(i18n("File %1 saved.").tqarg(m_outputFilename));
     }
     else
       emit signalChangeStatusbar(i18n("File not saved"));
@@ -186,14 +186,14 @@ void MainWidget::fileSave() {
       emit signalChangeStatusbar(i18n("Error while saving file"));
       return;
     }
-    emit signalChangeStatusbar(i18n("Saving %1...").arg(m_outputFilename));
+    emit signalChangeStatusbar(i18n("Saving %1...").tqarg(m_outputFilename));
     char ch;
     while(in.get(ch))
       out.put(ch);
 
     in.close();
     out.close();
-    emit signalChangeStatusbar(i18n("File %1 saved.").arg(m_outputFilename));
+    emit signalChangeStatusbar(i18n("File %1 saved.").tqarg(m_outputFilename));
     m_changed=false;
   }
 }
@@ -226,7 +226,7 @@ void MainWidget::fileSaveAs() {
     {
       int res;
       if(TQFile::exists(saveFilename))
-        res=KMessageBox::warningYesNo(this,i18n("Overwrite %1 ?").arg(saveFilename));
+        res=KMessageBox::warningYesNo(this,i18n("Overwrite %1 ?").tqarg(saveFilename));
       else
       {
         salva=true;
@@ -251,14 +251,14 @@ void MainWidget::fileSaveAs() {
         emit signalChangeStatusbar(i18n("Error while saving file"));
         return;
       }
-      emit signalChangeStatusbar(i18n("Saving %1...").arg(m_outputFilename));
+      emit signalChangeStatusbar(i18n("Saving %1...").tqarg(m_outputFilename));
       char ch;
       while(in.get(ch))
         out.put(ch);
       in.close();
       out.close();
       m_changed=false;
-      emit signalChangeStatusbar(i18n("File %1 saved.").arg(m_outputFilename));
+      emit signalChangeStatusbar(i18n("File %1 saved.").tqarg(m_outputFilename));
     }
     else
       emit signalChangeStatusbar(i18n("File not saved"));
@@ -286,7 +286,7 @@ void MainWidget::fileClose() {
 void MainWidget::cut() {
   if(originalLabel->pixmap()!=0)
   {
-    TQApplication::clipboard()->setPixmap(TQPixmap(*(originalLabel->pixmap())));
+    TQApplication::tqclipboard()->setPixmap(TQPixmap(*(originalLabel->pixmap())));
     fileClose();
   }
 }
@@ -294,12 +294,12 @@ void MainWidget::cut() {
 void MainWidget::copy() {
   if(originalLabel->pixmap()!=0)
   {
-    TQApplication::clipboard()->setPixmap(TQPixmap(*(originalLabel->pixmap())));
+    TQApplication::tqclipboard()->setPixmap(TQPixmap(*(originalLabel->pixmap())));
   }
 }
 
 void MainWidget::paste() {
-  TQPixmap clip=TQApplication::clipboard()->pixmap();
+  TQPixmap clip=TQApplication::tqclipboard()->pixmap();
   if(!clip.isNull())
   {
     if(!createTmpFilename())
@@ -309,7 +309,7 @@ void MainWidget::paste() {
     }
 
     m_outputFilename="";
-	 TQPixmap pix(TQApplication::clipboard()->pixmap());
+	 TQPixmap pix(TQApplication::tqclipboard()->pixmap());
 	 originalLabel->clear();
 	 originalLabel->setGeometry(0,0,pix.width(),pix.height());
     originalLabel->setPixmap(pix);
@@ -366,7 +366,7 @@ void MainWidget::getImageFromURL(KURL url) {
   previewLabel->clear();
   previewLabel->setGeometry(0,0,10,10);
   imagesTabs->setCurrentPage(0);
-  emit signalChangeStatusbar(i18n("File %1 loaded.").arg(filename));
+  emit signalChangeStatusbar(i18n("File %1 loaded.").tqarg(filename));
 
   if (!url.isLocalFile())
     KIO::NetAccess::removeTempFile(filename);
@@ -879,7 +879,7 @@ void MainWidget::tracerExited() {
     setCursor(ArrowCursor);
     return;
   }
-  if(tracer.exiStatus()!=0)
+  if(tracer.exitqStatus()!=0)
   {
     emit(signalChangeStatusbar(i18n("Finished with errors")));
     TQString tmp(i18n("Error during the process:"));
diff --git a/src/mainwidget.h b/src/mainwidget.h
index 03788f3..4c4aeae 100644
--- a/src/mainwidget.h
+++ b/src/mainwidget.h
@@ -27,7 +27,7 @@
 #include <tqprocess.h>
 #include <tqstringlist.h>
 #include <tqpixmap.h>
-#include <clipboard.h>
+#include <tqclipboard.h>
 #include <tqevent.h>
 #include <tqlabel.h>
 
diff --git a/src/potracegui.cpp b/src/potracegui.cpp
index bfedb0b..815bbb7 100644
--- a/src/potracegui.cpp
+++ b/src/potracegui.cpp
@@ -22,7 +22,7 @@
 #include "mainwidget.h"
 
 #include <tqlabel.h>
-#include <clipboard.h>
+#include <tqclipboard.h>
 
 #include <kmainwindow.h>
 #include <klocale.h>