diff --git a/tdecore/tdeaboutdata.cpp b/tdecore/tdeaboutdata.cpp
index 3a147842a..2e58ed283 100644
--- a/tdecore/tdeaboutdata.cpp
+++ b/tdecore/tdeaboutdata.cpp
@@ -34,10 +34,7 @@ TDEAboutPerson::name() const
 TQString
 TDEAboutPerson::task() const
 {
-   if (mTask && *mTask)
-      return i18n(mTask);
-   else
-      return TQString::null;
+  return i18n(mTask);
 }
 
 TQString
@@ -77,76 +74,66 @@ public:
     TDEAboutDataPrivate()
         : translatorName("_: NAME OF TRANSLATORS\nYour names")
         , translatorEmail("_: EMAIL OF TRANSLATORS\nYour emails")
-        , productName(0)
-        , programLogo(0)
         , customAuthorTextEnabled(false)
-        , mTranslatedProgramName( 0 )
         {}
-    ~TDEAboutDataPrivate()
-        {
-             delete programLogo;
-             delete[] mTranslatedProgramName;
-        }
-    const char *translatorName;
-    const char *translatorEmail;
-    const char *productName;
-    TQImage* programLogo;
+
+    TQCString translatorName;
+    TQCString translatorEmail;
+    TQCString productName;
+    TQImage  programLogo;
     TQString customAuthorPlainText, customAuthorRichText;
     bool customAuthorTextEnabled;
-    const char *mTranslatedProgramName;
+    TQCString mTranslatedProgramName;
 };
 
-const char *TDEAboutData::defaultBugTracker = "http://bugs.trinitydesktop.org";
-
-TDEAboutData::TDEAboutData( const char *appName,
-                        const char *programName,
-                        const char *version,
-                        const char *shortDescription,
-			int licenseType,
-			const char *copyrightStatement,
-			const char *text,
-			const char *homePageAddress,
-			const char *bugsEmailAddress
-			) :
-  mProgramName( programName ),
-  mVersion( version ),
-  mShortDescription( shortDescription ),
-  mLicenseKey( licenseType ),
-  mCopyrightStatement( copyrightStatement ),
-  mOtherText( text ),
-  mHomepageAddress( homePageAddress ),
-  mBugEmailAddress( (bugsEmailAddress!=0)?bugsEmailAddress:defaultBugTracker ),
-  mLicenseText (0)
-{
-   d = new TDEAboutDataPrivate;
-
-   if( appName ) {
-     const char *p = strrchr(appName, '/');
-     if( p )
-	 mAppName = p+1;
-     else
-	 mAppName = appName;
-   } else
-     mAppName = 0;
+TQCString TDEAboutData::defaultBugTracker = "http://bugs.trinitydesktop.org";
+
+TDEAboutData::TDEAboutData(const char *appName,
+        const char *programName,
+        const char *version,
+        const char *shortDescription,
+        int licenseType,
+        const char *copyrightStatement,
+        const char *text,
+        const char *homePageAddress,
+        const char *bugsEmailAddress)
+      : mProgramName( programName ),
+        mVersion( version ),
+        mShortDescription( shortDescription ),
+        mLicenseKey( licenseType ),
+        mCopyrightStatement( copyrightStatement ),
+        mOtherText( text ),
+        mHomepageAddress( homePageAddress ),
+        mBugEmailAddress( (bugsEmailAddress != nullptr) ? TQCString(bugsEmailAddress) : TQCString(defaultBugTracker) ),
+        mLicenseText()
+{
+  d = new TDEAboutDataPrivate;
+
+  if( appName ) {
+    const char *p = strrchr(appName, '/');
+    if( p )
+      mAppName = p+1;
+    else
+      mAppName = appName;
+  } else
+    mAppName = TQCString();
 }
 
 TDEAboutData::~TDEAboutData()
 {
-    if (mLicenseKey == License_File)
-        delete [] mLicenseText;
     delete d;
 }
 
 void
 TDEAboutData::addAuthor( const char *name, const char *task,
-		    const char *emailAddress, const char *webAddress )
+        const char *emailAddress, const char *webAddress )
 {
   mAuthorList.append(TDEAboutPerson(name,task,emailAddress,webAddress));
 }
 
 void
 TDEAboutData::addCredit( const char *name, const char *task,
-		    const char *emailAddress, const char *webAddress )
+        const char *emailAddress, const char *webAddress )
 {
   mCreditList.append(TDEAboutPerson(name,task,emailAddress,webAddress));
 }
@@ -242,28 +229,25 @@ TDEAboutData::appName() const
 const char *
 TDEAboutData::productName() const
 {
-   if (d->productName)
-      return d->productName;
-   else
-      return appName();
+  if (!d->productName.isEmpty())
+    return d->productName;
+  else
+    return appName();
 }
 
 TQString
 TDEAboutData::programName() const
 {
-   if (mProgramName && *mProgramName)
-      return i18n(mProgramName);
-   else
-      return TQString::null;
+  return i18n(mProgramName);
 }
 
 const char*
 TDEAboutData::internalProgramName() const
 {
-   if (d->mTranslatedProgramName)
-      return d->mTranslatedProgramName;
-   else
-      return mProgramName;
+  if (!d->mTranslatedProgramName.isEmpty())
+    return d->mTranslatedProgramName;
+  else
+    return mProgramName;
 }
 
 // TDECrash should call as few things as possible and should avoid e.g. malloc()
@@ -272,8 +256,7 @@ TDEAboutData::internalProgramName() const
 void
 TDEAboutData::translateInternalProgramName() const
 {
-  delete[] d->mTranslatedProgramName;
-  d->mTranslatedProgramName = 0;
+  d->mTranslatedProgramName = TQCString();
   if( TDEGlobal::locale() )
       d->mTranslatedProgramName = tqstrdup( programName().utf8());
 }
@@ -281,16 +264,13 @@ TDEAboutData::translateInternalProgramName() const
 TQImage
 TDEAboutData::programLogo() const
 {
-    return d->programLogo ? (*d->programLogo) : TQImage();
+  return d->programLogo;
 }
 
 void
 TDEAboutData::setProgramLogo(const TQImage& image)
 {
-    if (!d->programLogo)
-       d->programLogo = new TQImage( image );
-    else
-       *d->programLogo = image;
+  d->programLogo = image;
 }
 
 TQString
@@ -302,10 +282,7 @@ TDEAboutData::version() const
 TQString
 TDEAboutData::shortDescription() const
 {
-   if (mShortDescription && *mShortDescription)
-      return i18n(mShortDescription);
-   else
-      return TQString::null;
+  return i18n(mShortDescription);
 }
 
 TQString
@@ -337,7 +314,7 @@ TDEAboutData::translators() const
 {
     TQValueList<TDEAboutTranslator> personList;
 
-    if(d->translatorName == 0)
+    if(d->translatorName.isEmpty())
         return personList;
 
     TQStringList nameList;
@@ -350,7 +327,7 @@ TDEAboutData::translators() const
     }
 
 
-    if(d->translatorEmail)
+    if(!d->translatorEmail.isEmpty())
     {
         TQString emails = i18n(d->translatorEmail);
 
@@ -397,10 +374,7 @@ TDEAboutData::aboutTranslationTeam()
 TQString
 TDEAboutData::otherText() const
 {
-   if (mOtherText && *mOtherText)
-      return i18n(mOtherText);
-   else
-      return TQString::null;
+  return i18n(mOtherText);
 }
 
 
@@ -447,7 +421,7 @@ TDEAboutData::license() const
        f = locate("data", "LICENSES/QPL_V1.0");
        break;
     case License_Custom:
-       if (mLicenseText && *mLicenseText)
+       if (!mLicenseText.isEmpty())
           return( i18n(mLicenseText) );
        // fall through
     default:
@@ -478,10 +452,7 @@ TDEAboutData::license() const
 TQString
 TDEAboutData::copyrightStatement() const
 {
-  if (mCopyrightStatement && *mCopyrightStatement)
-     return i18n(mCopyrightStatement);
-  else
-     return TQString::null;
+  return i18n(mCopyrightStatement);
 }
 
 TQString
@@ -501,7 +472,7 @@ TDEAboutData::customAuthorTextEnabled() const
 {
   return d->customAuthorTextEnabled;
 }
-    
+
 void
 TDEAboutData::setCustomAuthorText(const TQString &plainText, const TQString &richText)
 {
@@ -510,7 +481,7 @@ TDEAboutData::setCustomAuthorText(const TQString &plainText, const TQString &ric
 
   d->customAuthorTextEnabled = true;
 }
-    
+
 void
 TDEAboutData::unsetCustomAuthorText()
 {
diff --git a/tdecore/tdeaboutdata.h b/tdecore/tdeaboutdata.h
index 06f193f75..50a520f3a 100644
--- a/tdecore/tdeaboutdata.h
+++ b/tdecore/tdeaboutdata.h
@@ -27,7 +27,6 @@
 #ifndef _TDEABOUTDATA_H_
 #define _TDEABOUTDATA_H_
 
-class TDEAboutPersonPrivate;
 class TDEAboutDataPrivate;
 
 /**
@@ -67,19 +66,14 @@ public:
      *
      * @param webAddress Home page of the person.
      */
-    TDEAboutPerson( const char *name, const char *task,
-                  const char *emailAddress, const char *webAddress )
+    TDEAboutPerson(const char *name = nullptr, const char *task = nullptr,
+                   const char *emailAddress = nullptr, const char *webAddress = nullptr)
     {
       mName = name;
       mTask = task;
       mEmailAddress = emailAddress;
       mWebAddress = webAddress;
     }
-    /**
-     * @internal
-     * Don't use. Required by QValueList
-     */
-    TDEAboutPerson() {}
 
     /**
      * The person's name
@@ -109,16 +103,13 @@ public:
      */
     TQString webAddress() const;
 
-private:
-    const char *mName;
-    const char *mTask;
-    const char *mEmailAddress;
-    const char *mWebAddress;
-
-    TDEAboutPersonPrivate *d;
+protected:
+    TQCString mName;
+    TQCString mTask;
+    TQCString mEmailAddress;
+    TQCString mWebAddress;
 };
 
-class TDEAboutTranslatorPrivate;
 /**
  * This structure is used to store information about a translator.
  * It can store the translator's name and an email address.
@@ -161,7 +152,6 @@ public:
 private:
     TQString mName;
     TQString mEmail;
-    TDEAboutTranslatorPrivate* d;
 };
 
 
@@ -237,16 +227,16 @@ class TDECORE_EXPORT TDEAboutData
      *        This defaults to the trinitydesktop.org bug system.
      *
      */
-    TDEAboutData( const char *appName,
-                const char *programName,
-		const char *version,
-		const char *shortDescription = 0,
-		int licenseType = License_Unknown,
-		const char *copyrightStatement = 0,
-		const char *text = 0,
-		const char *homePageAddress = 0,
-		const char *bugsEmailAddress = 0
-		);
+    TDEAboutData(const char *appName,
+                 const char *programName,
+                 const char *version,
+                 const char *shortDescription = nullptr,
+                 int licenseType = License_Unknown,
+                 const char *copyrightStatement = nullptr,
+                 const char *text = nullptr,
+                 const char *homePageAddress = nullptr,
+                 const char *bugsEmailAddress = nullptr
+                );
 
      ~TDEAboutData();
 
@@ -270,9 +260,9 @@ class TDECORE_EXPORT TDEAboutData
      *
      */
     void addAuthor( const char *name,
-		    const char *task=0,
-		    const char *emailAddress=0,
-		    const char *webAddress=0 );
+        const char *task=0,
+        const char *emailAddress=0,
+        const char *webAddress=0 );
 
     /**
      * Defines a person that deserves credit. You can call this function
@@ -295,8 +285,8 @@ class TDECORE_EXPORT TDEAboutData
      */
     void addCredit( const char *name,
                     const char *task=0,
-		    const char *emailAddress=0,
-		    const char *webAddress=0 );
+        const char *emailAddress=0,
+        const char *webAddress=0 );
 
     /**
      * Sets the name of the translator of the gui. Since this depends
@@ -354,7 +344,7 @@ class TDECORE_EXPORT TDEAboutData
      * @param appName The application name. Example: "kate".
      */
     void setAppName( const char *appName );
-    
+
     /**
      * Defines the displayable program name string.
      *
@@ -367,7 +357,7 @@ class TDECORE_EXPORT TDEAboutData
 
     /**
      * Defines the program logo.
-     * Use this if you need to have application logo 
+     * Use this if you need to have application logo
      * in AboutData other than application icon.
      *
      * @param image logo image.
@@ -382,7 +372,7 @@ class TDECORE_EXPORT TDEAboutData
      * @param version The program version.
      */
     void setVersion( const char* version );
-    
+
     /**
      * Defines a short description of what the program does.
      *
@@ -391,14 +381,14 @@ class TDECORE_EXPORT TDEAboutData
      *        with syntax highlithing support.").
      */
     void setShortDescription( const char *shortDescription );
-    
+
     /**
      * Defines the license identifier.
      *
      * @param licenseKey The license identifier.
      */
     void setLicense( LicenseKey licenseKey);
-    
+
     /**
      * Defines the copyright statement to show when displaying the license.
      *
@@ -408,7 +398,7 @@ class TDECORE_EXPORT TDEAboutData
      *        is not used.
      */
     void setCopyrightStatement( const char *copyrightStatement );
-    
+
     /**
      * Defines the additional text to show in the about dialog.
      *
@@ -417,7 +407,7 @@ class TDECORE_EXPORT TDEAboutData
      *        should be marked for translation.
      */
     void setOtherText( const char *otherText );
-    
+
     /**
      * Defines the program homepage.
      *
@@ -426,7 +416,7 @@ class TDECORE_EXPORT TDEAboutData
      *        is correct, "kate-editor.org" is not.
      */
     void setHomepage( const char *homepage );
-    
+
     /**
      * Defines the address where bug reports should be sent.
      *
@@ -434,7 +424,7 @@ class TDECORE_EXPORT TDEAboutData
      *        This defaults to the kde.org bug system.
      */
     void setBugAddress( const char *bugAddress );
-    
+
     /**
      * Defines the product name wich will be used in the KBugReport dialog.
      * By default it's the appName, but you can overwrite it here to provide
@@ -455,7 +445,7 @@ class TDECORE_EXPORT TDEAboutData
      * Returns the application's product name, which will be used in KBugReport
      * dialog. By default it returns appName(), otherwise the one which is set
      * with setProductName()
-     * 
+     *
      * @return the product name.
      */
     const char *productName() const;
@@ -476,8 +466,8 @@ class TDECORE_EXPORT TDEAboutData
     void translateInternalProgramName() const;
 
     /**
-     * Returns the program logo image. 
-     * @return the program logo data or null image if there is 
+     * Returns the program logo image.
+     * @return the program logo data or null image if there is
      * no custom application logo defined.
      * @since 3.4
      */
@@ -513,7 +503,7 @@ class TDECORE_EXPORT TDEAboutData
      * @return the email address where to report bugs.
      */
     TQString bugAddress() const;
-    
+
     /**
      * @internal
      */
@@ -590,7 +580,7 @@ class TDECORE_EXPORT TDEAboutData
      *         authors.
      */
     bool customAuthorTextEnabled() const;
-    
+
     /**
      * Sets the custom text displayed around the list of authors instead
      * of the default message telling users to send bug reports to bugAddress().
@@ -602,28 +592,28 @@ class TDECORE_EXPORT TDEAboutData
      * all.  Call unsetCustomAuthorText() to revert to the default mesage.
      */
     void setCustomAuthorText(const TQString &plainText, const TQString &richText);
-    
+
     /**
      * Clears any custom text displayed around the list of authors and falls
      * back to the default message telling users to send bug reports to
      * bugAddress().
      */
     void unsetCustomAuthorText();
-    
+
   private:
-    const char *mAppName;
-    const char *mProgramName;
-    const char *mVersion;
-    const char *mShortDescription;
+    TQCString mAppName;
+    TQCString mProgramName;
+    TQCString mVersion;
+    TQCString mShortDescription;
     int mLicenseKey;
-    const char *mCopyrightStatement;
-    const char *mOtherText;
-    const char *mHomepageAddress;
-    const char *mBugEmailAddress;
+    TQCString mCopyrightStatement;
+    TQCString mOtherText;
+    TQCString mHomepageAddress;
+    TQCString mBugEmailAddress;
     TQValueList<TDEAboutPerson> mAuthorList;
     TQValueList<TDEAboutPerson> mCreditList;
-    const char *mLicenseText;
-    static const char *defaultBugTracker;
+    TQCString mLicenseText;
+    static TQCString defaultBugTracker;
 
     TDEAboutDataPrivate *d;
 };