diff --git a/src/knowit.cpp b/src/knowit.cpp
index 2443313..b587824 100644
--- a/src/knowit.cpp
+++ b/src/knowit.cpp
@@ -16,11 +16,11 @@
  ***************************************************************************/
 
 #include <tqtimer.h>
-#include <clipboard.h>
+#include <tqclipboard.h>
 #include <tqdatetime.h>
 #include <tqdir.h>
 #include <tqfile.h>
-#include <textstream.h>
+#include <tqtextstream.h>
 #include <tqpainter.h>
 #include <tqpaintdevicemetrics.h>
 #include <tqwhatsthis.h>
@@ -76,7 +76,7 @@ Knowit::Knowit(TQWidget*, const char *name) : KMainWindow(0, name),
    setAutoSaveSettings();
    setCentralWidget(Layout);
 
-   TQWhatsThis::add(Layout, i18n("Move it to change tree/edit layout."));
+   TQWhatsThis::add(Layout, i18n("Move it to change tree/edit tqlayout."));
    connect(Items, TQT_SIGNAL(contextMenu(KListView*, TQListViewItem*, const TQPoint&)),
      TQT_TQOBJECT(this), TQT_SLOT(slotContextMenu(KListView*, TQListViewItem*, const TQPoint&)));
    connect(Items, TQT_SIGNAL(selectionChanged(TQListViewItem*)), this,
@@ -271,7 +271,7 @@ Knowit::Knowit(TQWidget*, const char *name) : KMainWindow(0, name),
    /* System tray */
    systray = new KnowitTray(this, "Systray");
    systray->setPixmap(Notes.Pixmaps[1]);
-   systray->setAlignment(TQt::AlignHCenter | TQt::AlignVCenter);
+   systray->tqsetAlignment(TQt::AlignHCenter | TQt::AlignVCenter);
 
    /* Autosave */
    AutosaveTimer = new TQTimer(this);
@@ -326,7 +326,7 @@ bool Knowit::open(const KURL& fname)
    TQFile file(fname.path());
    if (!file.open(IO_ReadOnly)) {
       KMessageBox::error(0, i18n("<qt>Cannot open file<br><b>%1</b></qt>")
-         .arg(fname.url()));
+         .tqarg(fname.url()));
       if (filename == fname)
          filename = "";
       return false;
@@ -376,7 +376,7 @@ bool Knowit::open(const KURL& fname)
    slotNoteChanged(active);
    Edit->setModified(false);
    actionRecent->addURL(filename);
-   slotStatusMsg(i18n("File %1 opened.").arg(filename.fileName()));
+   slotStatusMsg(i18n("File %1 opened.").tqarg(filename.fileName()));
    slotActionUpdate();
 
    file.close();
@@ -392,7 +392,7 @@ bool Knowit::save(const KURL& fname)
   TQFile file(fname.path());
   if (!file.open(IO_WriteOnly)) {
      KMessageBox::error(0, i18n("<qt>Cannot save file<br><b>%1</b></qt>")
-         .arg(fname.url()));
+         .tqarg(fname.url()));
      return false;
      }
   if (Items->prevItem && Edit->isModified())
@@ -407,7 +407,7 @@ bool Knowit::save(const KURL& fname)
   Notes.modified = false;
   Edit->setModified(false);
   actionRecent->addURL(filename);
-  slotStatusMsg(i18n("File %1 saved.").arg(filename.fileName()));
+  slotStatusMsg(i18n("File %1 saved.").tqarg(filename.fileName()));
   if (Options.autosave)
      AutosaveTimer->start(Options.autosave * 60 * 1000, true);
   return true;
@@ -443,13 +443,13 @@ bool Knowit::queryClose()
    else if (Options.unconditionalSave) {
        slotFileSave();
        return shuttingDown = filename.isEmpty() || !modified()  || (KMessageBox::questionYesNo(0,
-           i18n("<qt>File <b>%1</b><br>\ncannot be saved. Quit anyway?</qt>").arg(filename.fileName())) 
+           i18n("<qt>File <b>%1</b><br>\ncannot be saved. Quit anyway?</qt>").tqarg(filename.fileName())) 
 	   == KMessageBox::Yes);
        }
    else
       switch (KMessageBox::questionYesNoCancel(0,
        i18n("<qt>File <b>%1</b><br>\nwas modified. Do you want to save it?</qt>")
-          .arg(filename.isEmpty() ? Untitled : filename.fileName()))) {
+          .tqarg(filename.isEmpty() ? Untitled : filename.fileName()))) {
       case KMessageBox::Yes:
          slotFileSave();
          return shuttingDown = !modified();
@@ -491,7 +491,7 @@ void Knowit::find(TQListViewItem* start)
       }
       it++;
    }
-   KMessageBox::information(0, i18n("<qt>Sought text:<br><b>%1</b><br>not found.</qt>").arg(soughtText));
+   KMessageBox::information(0, i18n("<qt>Sought text:<br><b>%1</b><br>not found.</qt>").tqarg(soughtText));
 }
 
 
@@ -671,7 +671,7 @@ void Knowit::slotNoteRemove()
       i18n("<qt>Are you sure you want to delete note<br><b>%1</b><br> "
          "and its subnotes?</qt>") :
       i18n("<qt>Are you sure you want to delete note<br><b>%1</b>?</qt>");
-   if (KMessageBox::questionYesNo(0, msg.arg(elt->text(0))) == KMessageBox::Yes) {
+   if (KMessageBox::questionYesNo(0, msg.tqarg(elt->text(0))) == KMessageBox::Yes) {
       TQListViewItem* parent = elt->parent();
       Notes.removeNote(elt);
       if (!Notes.count())
@@ -884,7 +884,7 @@ void Knowit::slotFileSaveAs()
       TQFileInfo fileinfo(url.path());
       if (fileinfo.exists() && KMessageBox::questionYesNo(0,
          i18n("<qt>File<br><b>%1</b><br>already exists. Overwrite it?</qt>")
-            .arg(url.path())) == KMessageBox::No)
+            .tqarg(url.path())) == KMessageBox::No)
          return;
       save(url);
   }
@@ -901,8 +901,8 @@ void Knowit::slotFileInfo()
    }
    KMessageBox::information(0, i18n("<qt><h1>%1</h1>"
       "Document path: %2<br>"
-      "Number of notes: %3</qt>").arg(filename.fileName())
-         .arg(filename.path()).arg(count));
+      "Number of notes: %3</qt>").tqarg(filename.fileName())
+         .tqarg(filename.path()).tqarg(count));
 }
 
 
@@ -926,7 +926,7 @@ void Knowit::slotFilePrint()
    TQRect view(body);
    int page = 1;
    while (true) {
-      richText.draw(&p, body.left(), body.top(), view, colorGroup());
+      richText.draw(&p, body.left(), body.top(), view, tqcolorGroup());
          view.moveBy(0, body.height());
       p.translate( 0 , -body.height());
       p.setFont(Edit->font());
@@ -976,7 +976,7 @@ void Knowit::slotFileExport()
      TQFileInfo fileinfo(url.path());
      if (fileinfo.exists() && KMessageBox::questionYesNo(0,
          i18n("<qt>File<br><b>%1</b><br>already exists. Overwrite it?</qt>")
-            .arg(url.path())) == KMessageBox::No)
+            .tqarg(url.path())) == KMessageBox::No)
         return;
      int choice = ChooserDlg.getChoice();
      TQListViewItem* start = (choice & KnowitChooser::SaveAll) ?
@@ -985,8 +985,8 @@ void Knowit::slotFileExport()
      TQString style;
      if (choice & KnowitChooser::Style)
         style = TQString("body {font-family: \"%1\"; color: %2; background-color: %3}")
-           .arg(Edit->family()).arg(Edit->paletteForegroundColor().name())
-           .arg(Edit->paletteBackgroundColor().name());
+           .tqarg(Edit->family()).tqarg(Edit->paletteForegroundColor().name())
+           .tqarg(Edit->paletteBackgroundColor().name());
      Notes.find(start)->saveHTML(url, origname, style, choice);
      Options.exportFlags = choice;
   }
@@ -1031,22 +1031,22 @@ void Knowit::slotEditNormal()
 
 void Knowit::slotEditAlignLeft()
 {
-   Edit->setAlignment(TQt::AlignLeft);
+   Edit->tqsetAlignment(TQt::AlignLeft);
 }
 
 void Knowit::slotEditAlignRight()
 {
-   Edit->setAlignment(TQt::AlignRight);
+   Edit->tqsetAlignment(TQt::AlignRight);
 }
 
 void Knowit::slotEditAlignJustify()
 {
-   Edit->setAlignment(TQt::AlignJustify);
+   Edit->tqsetAlignment(TQt::AlignJustify);
 }
 
 void Knowit::slotEditAlignCenter()
 {
-   Edit->setAlignment(TQt::AlignCenter);
+   Edit->tqsetAlignment(TQt::AlignCenter);
 }
 
 void Knowit::slotEditListBullet()
@@ -1114,7 +1114,7 @@ void Knowit::slotEditInsertDate()
       Edit->setUnderline(Options.insertDateUnderline);
       Edit->setColor(TQColor(Options.insertDateColor));
       Edit->insert(TQString("%1")
-         .arg(TQDateTime::currentDateTime().toString(Options.insertDateFormat)));
+         .tqarg(TQDateTime::tqcurrentDateTime().toString(Options.insertDateFormat)));
       Edit->setItalic(ii);
       Edit->setBold(ib);
       Edit->setUnderline(iu);
@@ -1134,7 +1134,7 @@ void Knowit::slotEditInsertFile()
    TQFile file(url.path());
    if (!file.open(IO_ReadOnly)) {
       KMessageBox::error(0, i18n("<qt>Cannot open file<br><b>%1</b></qt>")
-         .arg(url.url()));
+         .tqarg(url.url()));
       return;
       }
    TQTextStream ts(&file);
@@ -1165,10 +1165,10 @@ void Knowit::slotEditChanged()
    actionBold->setChecked(Edit->bold());
    actionItalic->setChecked(Edit->italic());
    actionUnderline->setChecked(Edit->underline());
-   actionEditAlignLeft->setChecked(Edit->alignment() == TQt::AlignLeft);
-   actionEditAlignRight->setChecked(Edit->alignment() == TQt::AlignRight);
-   actionEditAlignCenter->setChecked(Edit->alignment() == TQt::AlignCenter);
-   actionEditAlignJustify->setChecked(Edit->alignment() == TQt::AlignJustify);
+   actionEditAlignLeft->setChecked(Edit->tqalignment() == TQt::AlignLeft);
+   actionEditAlignRight->setChecked(Edit->tqalignment() == TQt::AlignRight);
+   actionEditAlignCenter->setChecked(Edit->tqalignment() == TQt::AlignCenter);
+   actionEditAlignJustify->setChecked(Edit->tqalignment() == TQt::AlignJustify);
 }
 
 void Knowit::slotEditCursorChanged(int, int)
@@ -1277,7 +1277,7 @@ void Knowit::slotLinkRemove()
 {
    TQString msg = i18n("<qt>Are you sure you want to remove link:<br><b>%1</b>?</qt>");
    if (Links->currentItem() != -1 && KMessageBox::questionYesNo(0,
-      msg.arg(Links->currentText())) == KMessageBox::Yes) {
+      msg.tqarg(Links->currentText())) == KMessageBox::Yes) {
       currentNote()->removeLink(Links->currentItem());
       Links->removeItem(Links->currentItem());
       if (!Links->count())
@@ -1322,7 +1322,7 @@ void Knowit::slotLinkCopy()
 {
    if (Links->currentItem() == -1) return;
    TNoteLink link = currentNote()->link(Links->currentItem());
-   kapp->clipboard()->setText(link.link, TQClipboard::Clipboard);
-   kapp->clipboard()->setText(link.link, TQClipboard::Selection);
+   kapp->tqclipboard()->setText(link.link, TQClipboard::Clipboard);
+   kapp->tqclipboard()->setText(link.link, TQClipboard::Selection);
 }
 
diff --git a/src/knowit.h b/src/knowit.h
index 9cae51c..b623bb6 100644
--- a/src/knowit.h
+++ b/src/knowit.h
@@ -120,7 +120,7 @@ class Knowit : public KMainWindow
     TNote* currentNote() const;
 
  public slots:
-    /** Status bar text has changed - displays it */
+    /** tqStatus bar text has changed - displays it */
     void slotStatusMsg(const TQString& text);
     /** Shows requested popup menu for notes */
     void slotContextMenu(KListView*, TQListViewItem*, const TQPoint&);
@@ -180,11 +180,11 @@ class Knowit : public KMainWindow
     void slotEditUnderline();
     /** Changes color of selected/current text */
     void slotEditColor();
-    /** Changes vertical alignment to superscript */
+    /** Changes vertical tqalignment to superscript */
     void slotEditSuperscript();
-    /** Changes vertical alignment to subscript */
+    /** Changes vertical tqalignment to subscript */
     void slotEditSubscript();
-    /** Restores normal vertical alignment */
+    /** Restores normal vertical tqalignment */
     void slotEditNormal();
     /** Prompts for text and shows note containing it */
     void slotEditFind();
diff --git a/src/knowitchooser.cpp b/src/knowitchooser.cpp
index c025f8f..a17bbd8 100644
--- a/src/knowitchooser.cpp
+++ b/src/knowitchooser.cpp
@@ -19,7 +19,7 @@
 
 #include <tqcheckbox.h>
 #include <tqlabel.h>
-#include <layout.h>
+#include <tqlayout.h>
 #include <tqvbox.h>
 
 #include <kcombobox.h>
@@ -31,28 +31,28 @@ KnowitChooser::KnowitChooser(int flags)
 {
    TQLabel* l1;
    TQLabel* l2;
-   TQVBoxLayout* layout = new TQVBoxLayout(plainPage());
-   layout->addWidget(l1 = new TQLabel(i18n("&Exported notes:"), plainPage()));
-   layout->addWidget(notes = new KComboBox(plainPage(), "Notes"));
+   TQVBoxLayout* tqlayout = new TQVBoxLayout(plainPage());
+   tqlayout->addWidget(l1 = new TQLabel(i18n("&Exported notes:"), plainPage()));
+   tqlayout->addWidget(notes = new KComboBox(plainPage(), "Notes"));
    l1->setBuddy(notes);
    notes->insertItem(i18n("All"));
-   notes->insertItem(i18n("Current with children"));
+   notes->insertItem(i18n("Current with tqchildren"));
    notes->insertItem(i18n("Current only"));
     
-   layout->addWidget(l2 = new TQLabel(i18n("&Encoding:"), plainPage()));
-   layout->addWidget(charset = new KComboBox(plainPage(), "Encoding"));
+   tqlayout->addWidget(l2 = new TQLabel(i18n("&Encoding:"), plainPage()));
+   tqlayout->addWidget(charset = new KComboBox(plainPage(), "Encoding"));
    l2->setBuddy(charset);
    charset->insertItem(i18n("Local (8-bit)"));
    charset->insertItem(i18n("UTF-8"));
 
-   layout->addItem(new TQSpacerItem(0, 10));
-   layout->addWidget(enumerate = new TQCheckBox(i18n("Numbered titles"),
+   tqlayout->addItem(new TQSpacerItem(0, 10));
+   tqlayout->addWidget(enumerate = new TQCheckBox(i18n("Numbered titles"),
       plainPage(), "Numbered"));
-   layout->addWidget(toc = new TQCheckBox(i18n("Table of contents"),
+   tqlayout->addWidget(toc = new TQCheckBox(i18n("Table of contents"),
       plainPage(), "TOC"));
-   layout->addWidget(rule = new TQCheckBox(i18n("Rule betweeen notes"),
+   tqlayout->addWidget(rule = new TQCheckBox(i18n("Rule betweeen notes"),
       plainPage(), "Rule"));
-   layout->addWidget(style = new TQCheckBox(i18n("Use editor font and colors"),
+   tqlayout->addWidget(style = new TQCheckBox(i18n("Use editor font and colors"),
       plainPage(), "Style"));
    setChoice(flags);
 }
diff --git a/src/knowitlink.cpp b/src/knowitlink.cpp
index 3637038..a137dd2 100644
--- a/src/knowitlink.cpp
+++ b/src/knowitlink.cpp
@@ -20,7 +20,7 @@
 
 #include <tqtoolbutton.h>
 #include <tqlabel.h>
-#include <layout.h>
+#include <tqlayout.h>
 #include <tqvbox.h>
 
 #include <kfiledialog.h>
@@ -33,27 +33,27 @@
 KnowitLinkDialog::KnowitLinkDialog()
    : KDialogBase(Plain, i18n("Modify link"), Ok|Cancel, Ok)
 {
-   TQVBoxLayout* layout = new TQVBoxLayout(plainPage());
+   TQVBoxLayout* tqlayout = new TQVBoxLayout(plainPage());
 
    TQHBox* typeBox = new TQHBox(plainPage());
-   layout->addWidget(typeBox);
+   tqlayout->addWidget(typeBox);
    new TQLabel(i18n("Referenced item:"), typeBox);
    linkType = new KComboBox(typeBox, "LinkType");
    linkType->insertItem(i18n("File or URL"));
    linkType->insertItem(i18n("KnowIt note"));
 
-   layout->addItem(new TQSpacerItem(0, 5));       
+   tqlayout->addItem(new TQSpacerItem(0, 5));       
    TQHBox* editBox = new TQHBox(plainPage());
-   layout->addWidget(editBox);
+   tqlayout->addWidget(editBox);
    linkValue = new KLineEdit("Link text", editBox);
    linkValue->setMinimumWidth(300);
    browse = new TQToolButton(editBox, "Browse");
    browse->setIconSet(TQIconSet(KGlobal::iconLoader()->loadIcon("fileopen",
       KIcon::Toolbar, KIcon::SizeSmall)));
    
-   layout->addItem(new TQSpacerItem(0, 5));
-   layout->addWidget(new TQLabel(i18n("Link description:"), plainPage()));
-   layout->addWidget(linkDescription = new KLineEdit("Link description", plainPage()));
+   tqlayout->addItem(new TQSpacerItem(0, 5));
+   tqlayout->addWidget(new TQLabel(i18n("Link description:"), plainPage()));
+   tqlayout->addWidget(linkDescription = new KLineEdit("Link description", plainPage()));
 
    connect(browse, TQT_SIGNAL(clicked()), this, TQT_SLOT(slotBrowse()));
    connect(linkType, TQT_SIGNAL(activated(int)), this, TQT_SLOT(slotTypeChanged(int)));
diff --git a/src/knowitpref.cpp b/src/knowitpref.cpp
index 342b91f..f48deb0 100644
--- a/src/knowitpref.cpp
+++ b/src/knowitpref.cpp
@@ -23,7 +23,7 @@
 #include <tqtoolbutton.h>
 #include <tqspinbox.h>
 #include <tqdatetime.h>
-#include <layout.h>
+#include <tqlayout.h>
 #include <tqwhatsthis.h>
 #include <tqstring.h>
 #include <tqlabel.h>
@@ -132,17 +132,17 @@ KnowitPreferences::KnowitPreferences()
    : KDialogBase(IconList, i18n("KnowIt Preferences"), Ok|Cancel, Ok)
 {
     TQFrame* page;
-    TQVBoxLayout* layout;
+    TQVBoxLayout* tqlayout;
 
     /* first page: General */
     page = addPage(i18n("General"), i18n("General options"),
        KGlobal::iconLoader()->loadIcon(TQString("configure"), KIcon::Toolbar, KIcon::SizeMedium));
-    layout = new TQVBoxLayout(page, 0, spacingHint());
-    layout->addWidget(docked = new TQCheckBox(i18n("&Dock in System tray"), page, "Dock"));
-    layout->addWidget(reopen = new TQCheckBox(i18n("Open &last file on startup"), page, "Reopen"));
+    tqlayout = new TQVBoxLayout(page, 0, spacingHint());
+    tqlayout->addWidget(docked = new TQCheckBox(i18n("&Dock in System tray"), page, "Dock"));
+    tqlayout->addWidget(reopen = new TQCheckBox(i18n("Open &last file on startup"), page, "Reopen"));
 
     TQHBox* autosaveBox = new TQHBox(page);
-    layout->addWidget(autosaveBox);
+    tqlayout->addWidget(autosaveBox);
     new TQLabel(i18n("Autosave:"), autosaveBox);
     autosave = new TQSpinBox(0, 120, 5, autosaveBox, "Autosave");
     autosave->setPrefix(i18n("every "));
@@ -151,32 +151,32 @@ KnowitPreferences::KnowitPreferences()
     TQWhatsThis::add(autosave, i18n("Current file will be automatically saved "
        "after the specified interval. Set to <i>never</i> to disable autosave."));
 
-    layout->addWidget(unconditionalSave = new TQCheckBox(i18n("Automatically save file on e&xit"),
+    tqlayout->addWidget(unconditionalSave = new TQCheckBox(i18n("Automatically save file on e&xit"),
         page, "UnconditionalSave"));
     TQWhatsThis::add(unconditionalSave, i18n("Current file will be automatically saved "
        "on exit without confirmation."));
-    layout->addWidget(backup = new TQCheckBox(i18n("Create &backups"),
+    tqlayout->addWidget(backup = new TQCheckBox(i18n("Create &backups"),
         page, "Backup"));
     TQWhatsThis::add(backup, i18n("Create backup of current document before it is saved."));
-    layout->addWidget(multipleInstances = new TQCheckBox(i18n("Allow &multiple instances of KnowIt"),
+    tqlayout->addWidget(multipleInstances = new TQCheckBox(i18n("Allow &multiple instances of KnowIt"),
         page, "Instances"));
     TQWhatsThis::add(multipleInstances, i18n("If this option is disabled, only one "
        "instance of KnowIt will be allowed. If there is another instance already running, "
        "it will be automatically activated instead of running new one."));
-    layout->addStretch(1);
+    tqlayout->addStretch(1);
 
 
     /* second page: Interface */
     page = addPage(i18n("Interface"), i18n("Interface options"),
        KGlobal::iconLoader()->loadIcon(TQString("misc"), KIcon::Toolbar, KIcon::SizeMedium));
-    layout = new TQVBoxLayout(page, 0, spacingHint());
-    layout->addWidget(horizontalSplit = new TQCheckBox(i18n("Split window &horizontally"), page, "Split"));
+    tqlayout = new TQVBoxLayout(page, 0, spacingHint());
+    tqlayout->addWidget(horizontalSplit = new TQCheckBox(i18n("Split window &horizontally"), page, "Split"));
     TQWhatsThis::add(horizontalSplit, i18n("If this option is set, notes tree will "
        "be displayed on the left and the editor on the right (this is default).<br>"
        "Otherwise notes tree will be displayed at the top and the editor at the bottom."));
 
     TQHBox* defaultNameBox = new TQHBox(page);
-    layout->addWidget(defaultNameBox);
+    tqlayout->addWidget(defaultNameBox);
     new TQLabel(i18n("Default note name:"), defaultNameBox);
     defaultName = new KLineEdit(defaultNameBox, "DefaultName");
     TQWhatsThis::add(defaultName, i18n("Default name for new notes. It would be "
@@ -184,7 +184,7 @@ KnowitPreferences::KnowitPreferences()
        "consider setting default name to none."));
 
     TQHBox* linkBox = new TQHBox(page);
-    layout->addWidget(linkBox);
+    tqlayout->addWidget(linkBox);
     new TQLabel(i18n("Link format:"), linkBox);
     linkFormat = new KComboBox(linkBox, "LinkFormat");
     linkFormat->insertItem(i18n("Description (link)"));
@@ -193,31 +193,31 @@ KnowitPreferences::KnowitPreferences()
     linkFormat->insertItem(i18n("Description only"));
    
     TQHBox* alternateBox = new TQHBox(page);
-    layout->addWidget(alternateBox);
+    tqlayout->addWidget(alternateBox);
     alternateTree = new TQCheckBox(i18n("Alternate colors in tree"), alternateBox, "Alternate");
     alternateColor = new KColorButton(TQColor("White"), alternateBox, "AlternateColor");
 
-    layout->addWidget(autoCollapse = new TQCheckBox(i18n("Automatically collapse other notes"), page, "AutoCollapse"));
+    tqlayout->addWidget(autoCollapse = new TQCheckBox(i18n("Automatically collapse other notes"), page, "AutoCollapse"));
     TQWhatsThis::add(autoCollapse, i18n("If this option is set, only current subtree "
        "will be visible, other notes will be automatically collapsed."));
-    layout->addStretch(1);
+    tqlayout->addStretch(1);
 
 
     /* third page: Editor */
     page = addPage(i18n("Editor"), i18n("Editor options"),
        KGlobal::iconLoader()->loadIcon(TQString("edit"), KIcon::Toolbar, KIcon::SizeMedium));
-    layout = new TQVBoxLayout(page, 0, spacingHint());
-    layout->addWidget(wordwrap = new TQCheckBox(i18n("Use &word wrap"),
+    tqlayout = new TQVBoxLayout(page, 0, spacingHint());
+    tqlayout->addWidget(wordwrap = new TQCheckBox(i18n("Use &word wrap"),
        page, "WordWrap"));
-    layout->addWidget(enterBreakLine = new TQCheckBox(i18n("'Enter' ends current line, not paragraph"),
+    tqlayout->addWidget(enterBreakLine = new TQCheckBox(i18n("'Enter' ends current line, not paragraph"),
        page, "EnterLineBreak"));
-    layout->addWidget(tabfocus = new TQCheckBox(i18n("'Tab' in editor changes focus"),
+    tqlayout->addWidget(tabfocus = new TQCheckBox(i18n("'Tab' in editor changes focus"),
        page, "TabFocus"));
 #if TDE_VERSION_MAJOR == 3 && TDE_VERSION_MINOR < 1
     tabfocus->hide();
 #endif
     TQHBox* colorBox = new TQHBox(page);
-    layout->addWidget(colorBox);
+    tqlayout->addWidget(colorBox);
     customColors = new TQCheckBox(i18n("Use &custom colors"), colorBox, "CustomColors");
     editColors = new KDualColorButton(colorBox);
 
@@ -226,7 +226,7 @@ KnowitPreferences::KnowitPreferences()
     KFontChooser::getFontList(fontList, false);
 
     TQHBox* fontBox = new TQHBox(page);
-    layout->addWidget(fontBox);
+    tqlayout->addWidget(fontBox);
     customFont = new TQCheckBox(i18n("Use custom font:"), fontBox, "customFont");
     fontFamily = new KComboBox(true, fontBox);
     fontFamily->insertStringList(fontList);
@@ -235,13 +235,13 @@ KnowitPreferences::KnowitPreferences()
        fontSize->insertItem(TQString(TQString().setNum(fontSizes[i])),i);
     }
 
-    layout->addStretch(1);
+    tqlayout->addStretch(1);
 
 
     /* fourth page: Templates */
     page = addPage(i18n("Templates"), i18n("Templates configuration"),
        KGlobal::iconLoader()->loadIcon(TQString("wizard"), KIcon::Toolbar, KIcon::SizeMedium));
-    layout = new TQVBoxLayout(page, 0, spacingHint());
+    tqlayout = new TQVBoxLayout(page, 0, spacingHint());
     TQWhatsThis::add(page, i18n("<html>\n"
 "<p>These expressions may be used: </p>\n"
 "<table>\n"
@@ -266,13 +266,13 @@ KnowitPreferences::KnowitPreferences()
 "</table></html>"));
 
     TQHBox* topBox = new TQHBox(page);
-    layout->addWidget(topBox);
+    tqlayout->addWidget(topBox);
     TQLabel * label1 = new TQLabel(i18n("Date Format: "), topBox);
-    label1->setFixedSize(label1->sizeHint());
+    label1->setFixedSize(label1->tqsizeHint());
     insertDatePreview = new TQLabel("", topBox);
     
     TQHBox *tmpBox = new TQHBox(page);
-    layout->addWidget(tmpBox);
+    tqlayout->addWidget(tmpBox);
     insertDateColorButton = new KColorButton(TQColor("Blue"), tmpBox, "InsertDateColorButton");
     insertDateFormatEdit = new KLineEdit(tmpBox, "InsertDateFormatEdit");
     insertDateItalicButton = new TQToolButton(tmpBox,"InsertDateItalicButton");
@@ -284,9 +284,9 @@ KnowitPreferences::KnowitPreferences()
     insertDateUnderlineButton = new TQToolButton(tmpBox, "InsertDateUnderlineButton");
     insertDateUnderlineButton->setIconSet(TQIconSet(KGlobal::iconLoader()->loadIcon("text_under", KIcon::Toolbar)));    
     insertDateUnderlineButton->setToggleButton(true);
-    insertDateColorButton->setFixedSize(insertDateBoldButton->sizeHint());
-    insertDateFormatEdit->setMinimumWidth(6*insertDateBoldButton->sizeHint().width());
-    layout->addStretch(1);
+    insertDateColorButton->setFixedSize(insertDateBoldButton->tqsizeHint());
+    insertDateFormatEdit->setMinimumWidth(6*insertDateBoldButton->tqsizeHint().width());
+    tqlayout->addStretch(1);
 
     setIconListAllVisible(true);
 }
@@ -379,7 +379,7 @@ void KnowitPreferences::slotUpdateDatePreview()
    if(insertDateItalicButton->isOn()) str +="<i>";
    if(insertDateUnderlineButton->isOn()) str += "<u>";
    str += "<font COLOR=\""+insertDateColorButton->color().name()+"\">";
-   str += TQString("%1").arg(TQDateTime::currentDateTime().toString(insertDateFormatEdit->text()));
+   str += TQString("%1").tqarg(TQDateTime::tqcurrentDateTime().toString(insertDateFormatEdit->text()));
    str += "</font>";
    if(insertDateUnderlineButton->isOn()) str += "</u>";
    if(insertDateItalicButton->isOn()) str +="</i>";
diff --git a/src/notes.cpp b/src/notes.cpp
index faf0786..870c7af 100644
--- a/src/notes.cpp
+++ b/src/notes.cpp
@@ -19,8 +19,8 @@
 #include <tqstringlist.h>
 #include <tqfile.h>
 #include <tqdatetime.h>
-#include <textstream.h>
-#include <textcodec.h>
+#include <tqtextstream.h>
+#include <tqtextcodec.h>
 #include <klocale.h>
 #include <klistview.h>
 #include <kglobal.h>
@@ -51,8 +51,8 @@ TQString TNoteLink::text(int fmt) const
    if (fmt == LinkOnly || description.isEmpty()) return link;
    else if (fmt == DescriptionOnly) return description;
    else if (fmt == LinkDescription)
-      return TQString("%1 (%2)").arg(link).arg(description);
-   else return TQString("%1 (%2)").arg(description).arg(link);
+      return TQString("%1 (%2)").tqarg(link).tqarg(description);
+   else return TQString("%1 (%2)").tqarg(description).tqarg(link);
 }
 
 TQPixmap TNoteLink::icon() const
@@ -238,7 +238,7 @@ bool TNote::saveHTML(const KURL& fname, const TQString& origname, const TQString
   ts << "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">\n"
      "<html>\n<head>\n   <title>" << i18n("KnowIt document") <<
      TQString("</title>\n   <meta http-equiv=\"Content-Type\" "
-     "content=\"text/html; charset=%1\">\n").arg(ts.codec()->mimeName());
+     "content=\"text/html; charset=%1\">\n").tqarg(ts.codec()->mimeName());
   if (!style.isEmpty())
      ts << "   <style type=\"text/css\">\n   " << style << "\n   </style>\n";
   ts << "</head>\n\n<body>\n";
@@ -246,7 +246,7 @@ bool TNote::saveHTML(const KURL& fname, const TQString& origname, const TQString
   TQValueVector<int> Depths;
   Depths.append(0);
   if (flags & TOC) {
-     ts << TQString("<h1>%1</h1>\n").arg(i18n("Table of contents"));
+     ts << TQString("<h1>%1</h1>\n").tqarg(i18n("Table of contents"));
      saveHTMLTocEntry(ts, Depths, flags);
      ts << "\n\n";
      }
@@ -256,9 +256,9 @@ bool TNote::saveHTML(const KURL& fname, const TQString& origname, const TQString
   saveHTMLBuf(ts, Depths, flags);
   
   TQString epilog = i18n("Exported from %1 by KnowIt %2, %3.");
-  ts << "<br><br><br><small>" << epilog.arg(origname)
-     .arg(VERSION)
-     .arg(TQDateTime::currentDateTime().toString()) << "</small>\n\n";
+  ts << "<br><br><br><small>" << epilog.tqarg(origname)
+     .tqarg(VERSION)
+     .tqarg(TQDateTime::tqcurrentDateTime().toString()) << "</small>\n\n";
   ts << "</body>\n</html>\n\n";
   return true;
 }
@@ -272,12 +272,12 @@ bool TNote::saveHTMLBuf(TQTextStream& ts, TQValueVector<int>& depths,
    else if (hlevel > 3) hlevel = 3;
    TQString id, number;
    for (uint i=0; i<depths.count(); i++)
-         id += TQString("%1.").arg(depths[i]);
+         id += TQString("%1.").tqarg(depths[i]);
    if (flags & Enumerate)
       number = id + " ";
    
-   ts << TQString("<h%1 id=\"S%2\">%3%4</h%5>").arg(hlevel).arg(id).arg(number)
-      .arg(item->text(0)).arg(hlevel);
+   ts << TQString("<h%1 id=\"S%2\">%3%4</h%5>").tqarg(hlevel).tqarg(id).tqarg(number)
+      .tqarg(item->text(0)).tqarg(hlevel);
    TQString htmltext = text;
    int begin = htmltext.find("<body");
    if (begin >= 0) begin = htmltext.find(">", begin);
@@ -289,14 +289,14 @@ bool TNote::saveHTMLBuf(TQTextStream& ts, TQValueVector<int>& depths,
    /* save links */
    for (TQValueList<TNoteLink>::Iterator LinkList = links.begin();
       LinkList != links.end(); ++LinkList)
-      ts << TQString("<a href=\"%1\">%2</a><br>\n").arg((*LinkList).link)
-         .arg((*LinkList).text(TNoteLink::DescriptionOnly));
+      ts << TQString("<a href=\"%1\">%2</a><br>\n").tqarg((*LinkList).link)
+         .tqarg((*LinkList).text(TNoteLink::DescriptionOnly));
 
    /* save rule */
    if (flags & AddRule) ts << "<hr size=\"1\" noshade>\n\n";
    else ts << "\n\n";
 
-   /* save children */
+   /* save tqchildren */
    if ((SaveSubnotes | SaveAll) & flags && item->childCount()) {
       depths.append(0);
       collection->find(item->firstChild())->saveHTMLBuf(ts, depths, flags);
@@ -321,11 +321,11 @@ bool TNote::saveHTMLTocEntry(TQTextStream& ts, TQValueVector<int>& depths, int f
 
    TQString id, number;
    for (uint i=0; i<depths.count(); i++)
-         id += TQString("%1.").arg(depths[i]);
+         id += TQString("%1.").tqarg(depths[i]);
    if (flags & Enumerate) number = id + " ";
 
    ts << space;
-   ts << TQString("<dt><a href=\"#S%1\">%2%3</a></dt>\n").arg(id).arg(number).
+   ts << TQString("<dt><a href=\"#S%1\">%2%3</a></dt>\n").tqarg(id).tqarg(number).
       arg(item->text(0));
    if ((SaveSubnotes | SaveAll) & flags && item->childCount()) {
       depths.append(0);
@@ -397,9 +397,9 @@ void TNote::save(TQTextStream& ts, bool current)
    const TQString activeheader = "\\CurrentEntry %1 %2\n";
 
    if (current)
-      ts << activeheader.arg(item->depth()).arg(item->text(0));
+      ts << activeheader.tqarg(item->depth()).tqarg(item->text(0));
    else
-      ts << header.arg(item->depth()).arg(item->text(0));
+      ts << header.tqarg(item->depth()).tqarg(item->text(0));
    for (TQValueList<TNoteLink>::Iterator LinkList = links.begin();
         LinkList != links.end(); ++LinkList)
         (*LinkList).save(ts);