diff --git a/harbour/ChangeLog b/harbour/ChangeLog
index efc1bd6fc1..a4ccef6c98 100644
--- a/harbour/ChangeLog
+++ b/harbour/ChangeLog
@@ -16,6 +16,39 @@
    The license applies to all entries newer than 2009-04-28.
 */
 
+2010-10-15 09:52 UTC+0200 Viktor Szakats (harbour.01 syenar.hu)
+  * contrib/hbqt/qtcore/hbqt_pointer.cpp
+  * contrib/hbqt/qtcore/hbqtcore.hbx
+    + HBQT_ISOBJECT() will return .T. is the passed object is a HBQT one.
+
+  * contrib/hbqt/qtcore/hbqt_misc.prg
+    * :isValidObject() -> :hasValidPointer()
+    + :fromPointer(): New method used solely to convert raw QT pointers
+      to HBQT objects. In such case no object type checking can be done,
+      so it's dangerious, thus raw pointers should eventually be eliminated
+      from HBQT code and as final step this method removed.
+      The method will RTE is non-pointer parameter is passed.
+    + Added TODOs.
+    ; TODO: Change :from() method to only allow QT object input parameter
+            and RTE otherwise. At the same time :from() calls with pointer
+            input should be changed to :fromPointer(). As next step :from()
+            should be moved to class level and proper object type checking
+            added to avoid assigning wrong QT object to HBQT object wrapper.
+
+  * contrib/hbxbp/xbplistbox.prg
+  * contrib/hbxbp/xbpwindow.prg
+  * contrib/hbxbp/xbptreeview.prg
+  * contrib/hbide/idefindreplace.prg
+  * contrib/hbide/ideedit.prg
+  * contrib/hbide/idemisc.prg
+  * contrib/hbide/hbqreportsmanager.prg
+  * contrib/hbide/ideharbourhelp.prg
+  * contrib/hbide/ideskeletons.prg
+    * :isValidObject() -> :hasValidPointer()
+
+  * INSTALL
+    + Added OS/2 GCC link.
+
 2010-10-14 20:24 UTC+0200 Viktor Szakats (harbour.01 syenar.hu)
   * harbour/utils/hbmk2/hbmk2.prg
     + *nix builds will now use /opt/harbour/contrib and /opt/harbour/addons
diff --git a/harbour/INSTALL b/harbour/INSTALL
index c58531f135..a58d171d40 100644
--- a/harbour/INSTALL
+++ b/harbour/INSTALL
@@ -659,7 +659,7 @@ HARBOUR
                                  NOTE: In current implementation it's
                                  appended to compiler directory name, so all
                                  filesystem/platform name rules and limits
-                                 apply. (Back)slashes will be stripped from 
+                                 apply. (Back)slashes will be stripped from
                                  the name though.
    - HB_BUILD_PKG=yes            Create release package. Default: no
                                  Requires 'clean install' in root source dir.
@@ -1439,6 +1439,7 @@ HARBOUR
          ftp://ftp.netlabs.org/pub/gcc/libc-0_6_3-csd3.exe
          http://os2ports.smedley.info/index.php?page=gcc
          http://os2ports.smedley.info/index.php?page=gcc44
+         http://download.smedley.info/gcc-4.4.5-os2-20101004.zip
       DJGPP [dos, *nix, free, open-source]
          http://www.delorie.com/djgpp/
       Open Watcom [win, dos, os2, linux, free, open-source]
diff --git a/harbour/contrib/hbide/hbqreportsmanager.prg b/harbour/contrib/hbide/hbqreportsmanager.prg
index f9c6fac185..6642e9e402 100644
--- a/harbour/contrib/hbide/hbqreportsmanager.prg
+++ b/harbour/contrib/hbide/hbqreportsmanager.prg
@@ -528,7 +528,7 @@ METHOD HbqReportsManager:execEvent( cEvent, p, p1, p2 )
       EXIT
 
    CASE "QEvent_MouseMoveMenu"
-      IF empty( ::qPos ) .OR. empty( ::qAct ) .OR. ! ::qAct:isValidObject()
+      IF empty( ::qPos ) .OR. empty( ::qAct ) .OR. ! ::qAct:hasValidPointer()
          EXIT
       ENDIF
 
@@ -1071,7 +1071,7 @@ METHOD HbqReportsManager:contextMenuScene( p1 )
    qMenu:addAction( "Refresh"  )
    qMenu:addAction( "Zoom+" )
 
-   IF ( qAct := qMenu:exec( qEvent:screenPos() ) ):isValidObject()
+   IF ( qAct := qMenu:exec( qEvent:screenPos() ) ):hasValidPointer()
       SWITCH qAct:text()
       CASE "Refresh"
          EXIT
@@ -1095,7 +1095,7 @@ METHOD HbqReportsManager:contextMenuItem( p1, p2 )
    qMenu:addAction( "Cut"  )
    qMenu:addAction( "Copy" )
 
-   IF ( qAct := qMenu:exec( qEvent:screenPos() ) ):isValidObject()
+   IF ( qAct := qMenu:exec( qEvent:screenPos() ) ):hasValidPointer()
       SWITCH qAct:text()
       CASE "Cut"
          EXIT
@@ -1826,7 +1826,7 @@ METHOD HqrGraphicsItem:contextMenu( p1, p2 )
    qMenu:addAction( "Copy" )
 
    qAct := qMenu:exec( qEvent:screenPos() )
-   IF qAct:isValidObject()
+   IF qAct:hasValidPointer()
       SWITCH qAct:text()
       CASE "Cut"
          EXIT
diff --git a/harbour/contrib/hbide/ideedit.prg b/harbour/contrib/hbide/ideedit.prg
index 8b528806f6..dc6dbd10ad 100644
--- a/harbour/contrib/hbide/ideedit.prg
+++ b/harbour/contrib/hbide/ideedit.prg
@@ -450,7 +450,7 @@ METHOD IdeEdit:execEvent( nMode, oEdit, p, p1 )
       ::oEM:aActions[ 19, 2 ]:setEnabled( len( ::oEditor:aEdits ) == 0 .OR. ::oEditor:nSplOrient == -1 .OR. ::oEditor:nSplOrient == 2 )
       ::oEM:aActions[ 21, 2 ]:setEnabled( n > 0 )
 
-      IF ! ( qAct := ::oEM:qContextMenu:exec( qEdit:mapToGlobal( QPoint( p ) ) ) ):isValidObject()
+      IF ! ( qAct := ::oEM:qContextMenu:exec( qEdit:mapToGlobal( QPoint( p ) ) ) ):hasValidPointer()
          RETURN Self
       ENDIF
 
diff --git a/harbour/contrib/hbide/idefindreplace.prg b/harbour/contrib/hbide/idefindreplace.prg
index 01ec7386ca..cc94b45d42 100644
--- a/harbour/contrib/hbide/idefindreplace.prg
+++ b/harbour/contrib/hbide/idefindreplace.prg
@@ -975,7 +975,7 @@ METHOD IdeFindInFiles:execContextMenu( p )
       qMenu:addAction( "Zoom In"  )
       qMenu:addAction( "Zoom Out" )
 
-      IF ( qAct := qMenu:exec( ::oUI:q_editResults:mapToGlobal( QPoint( p ) ) ) ):isValidObject()
+      IF ( qAct := qMenu:exec( ::oUI:q_editResults:mapToGlobal( QPoint( p ) ) ) ):hasValidPointer()
          cAct := qAct:text()
 
          SWITCH cAct
diff --git a/harbour/contrib/hbide/ideharbourhelp.prg b/harbour/contrib/hbide/ideharbourhelp.prg
index 03ae327306..93a24c1481 100644
--- a/harbour/contrib/hbide/ideharbourhelp.prg
+++ b/harbour/contrib/hbide/ideharbourhelp.prg
@@ -490,7 +490,7 @@ METHOD IdeHarbourHelp:execEvent( nMode, p, p1 )
 
    CASE "buttonUp_clicked"
       IF ::nCurInHist > 1 .AND. ::nCurInHist <= len( ::aHistory )
-         IF ( qTWItem := ::oUI:q_treeDoc:itemAbove( ::oUI:q_treeDoc:currentItem( 0 ) ) ):isValidObject()
+         IF ( qTWItem := ::oUI:q_treeDoc:itemAbove( ::oUI:q_treeDoc:currentItem( 0 ) ) ):hasValidPointer()
             ::oUI:q_treeDoc:setCurrentItem( qTWItem, 0 )
          ENDIF
       ENDIF
diff --git a/harbour/contrib/hbide/idemisc.prg b/harbour/contrib/hbide/idemisc.prg
index 00afb0cacf..4c7a24e22d 100644
--- a/harbour/contrib/hbide/idemisc.prg
+++ b/harbour/contrib/hbide/idemisc.prg
@@ -171,7 +171,7 @@ FUNCTION hbide_execPopup( aPops, aqPos, qParent )
    ELSEIF hb_isPointer( aqPos )
       qPoint := qParent:mapToGlobal( QPoint( aqPos ) )
    ENDIF
-   IF ( qAct := qPop:exec( qPoint ) ):isValidObject()
+   IF ( qAct := qPop:exec( qPoint ) ):hasValidPointer()
       cAct := qAct:text()
       FOR EACH a_ IN aPops
          IF hb_isObject( a_[ 1 ] )
diff --git a/harbour/contrib/hbide/ideskeletons.prg b/harbour/contrib/hbide/ideskeletons.prg
index 5f68b5a935..b2a60ad87b 100644
--- a/harbour/contrib/hbide/ideskeletons.prg
+++ b/harbour/contrib/hbide/ideskeletons.prg
@@ -349,7 +349,7 @@ METHOD IdeSkeletons:selectByMenuAndPostText( qEdit )
             qMenu:addAction( a_[ 1 ] )
          NEXT
 
-         IF ( qAct := qMenu:exec( qEdit:mapToGlobal( QPoint( qRect:x(), qRect:y() ) ) ) ):isValidObject()
+         IF ( qAct := qMenu:exec( qEdit:mapToGlobal( QPoint( qRect:x(), qRect:y() ) ) ) ):hasValidPointer()
             IF !empty( cText := ::getText( qAct:text() ) )
                ::postText( qEdit, cText )
             ENDIF
diff --git a/harbour/contrib/hbqt/qtcore/hbqt_misc.prg b/harbour/contrib/hbqt/qtcore/hbqt_misc.prg
index 3a1b9fc372..e0db537279 100644
--- a/harbour/contrib/hbqt/qtcore/hbqt_misc.prg
+++ b/harbour/contrib/hbqt/qtcore/hbqt_misc.prg
@@ -62,7 +62,8 @@ CLASS HbQtObjectHandler
    VAR    pEvents
 
    METHOD from( xObject )
-   METHOD isValidObject()
+   METHOD fromPointer( pPtr )
+   METHOD hasValidPointer()
 
    METHOD connect( cnEvent, bBlock )
    METHOD disconnect( cnEvent )
@@ -73,11 +74,10 @@ ENDCLASS
 
 /*----------------------------------------------------------------------*/
 
-METHOD HbQtObjectHandler:isValidObject()
-   RETURN __hbqt_IsValidPointer( ::pPtr )
-
-/*----------------------------------------------------------------------*/
-
+/* NOTE: Deprecated: passing raw pointers to this function
+   TODO: Generate RTE when non QT object is passed.
+   TODO: Move thid to class implementation level so that proper object
+         type checking can be done. */
 METHOD HbQtObjectHandler:from( xObject )
    LOCAL pPtr
    IF hb_isPointer( pPtr := hbqt_ptr( xObject ) )
@@ -87,6 +87,24 @@ METHOD HbQtObjectHandler:from( xObject )
 
 /*----------------------------------------------------------------------*/
 
+/* TODO: Drop this function when all raw QT pointers are fully eliminated from .prg level. */
+METHOD HbQtObjectHandler:fromPointer( pPtr )
+   IF hb_isPointer( pPtr )
+      ::pPtr := pPtr
+   ELSE
+      hbqt_Error()
+   ENDIF
+   RETURN Self
+
+/*----------------------------------------------------------------------*/
+
+/* TODO: Drop this function, as it's not desired to have invalid QT pointers wrapped
+         into valid .prg level QT objects. */
+METHOD HbQtObjectHandler:hasValidPointer()
+   RETURN __hbqt_IsValidPointer( ::pPtr )
+
+/*----------------------------------------------------------------------*/
+
 METHOD HbQtObjectHandler:onError()
    LOCAL cMsg := __GetMessage()
    LOCAL oError
diff --git a/harbour/contrib/hbqt/qtcore/hbqt_pointer.cpp b/harbour/contrib/hbqt/qtcore/hbqt_pointer.cpp
index 46776be2d5..0e9ca4b87f 100644
--- a/harbour/contrib/hbqt/qtcore/hbqt_pointer.cpp
+++ b/harbour/contrib/hbqt/qtcore/hbqt_pointer.cpp
@@ -188,6 +188,22 @@ void * hbqt_pPtrFromObj( int iParam )
    }
 }
 
+HB_FUNC( HBQT_ISOBJECT )
+{
+   PHB_ITEM pParam = hb_param( 1, HB_IT_OBJECT );
+
+   if( pParam )
+   {
+      hb_vmPushSymbol( hb_dynsymSymbol( hb_dynsymFindName( "PPTR" ) ) );
+      hb_vmPush( pParam );
+      hb_vmSend( 0 );
+
+      hb_retl( hb_param( -1, HB_IT_POINTER ) != NULL );
+   }
+   else
+      hb_retl( HB_FALSE );
+}
+
 HB_FUNC( HBQT_PTR )
 {
    PHB_ITEM pParam = hb_param( 1, HB_IT_ANY );
diff --git a/harbour/contrib/hbqt/qtcore/hbqtcore.hbx b/harbour/contrib/hbqt/qtcore/hbqtcore.hbx
index 1321dfb8cb..d9902958f5 100644
--- a/harbour/contrib/hbqt/qtcore/hbqtcore.hbx
+++ b/harbour/contrib/hbqt/qtcore/hbqtcore.hbx
@@ -35,6 +35,7 @@ DYNAMIC HBQTOBJECTHANDLER
 DYNAMIC HBQT_ERROR
 DYNAMIC HBQT_FINDCHILD
 DYNAMIC HBQT_ISEQUALGCQTPOINTER
+DYNAMIC HBQT_ISOBJECT
 DYNAMIC HBQT_PTR
 DYNAMIC HB_HBQEVENTS
 DYNAMIC HB_HBQSLOTS
diff --git a/harbour/contrib/hbxbp/xbplistbox.prg b/harbour/contrib/hbxbp/xbplistbox.prg
index a780f63923..c9d8c3bbc6 100644
--- a/harbour/contrib/hbxbp/xbplistbox.prg
+++ b/harbour/contrib/hbxbp/xbplistbox.prg
@@ -274,7 +274,7 @@ METHOD XbpListBox:execSlot( cSlot, p )
    IF cSlot == "customContextMenuRequested(QPoint)"
       IF hb_isBlock( ::hb_contextMenu )
          qPos := QPoint( p )
-         IF ( qItm := ::oWidget:itemAt( qPos ) ):isValidObject()
+         IF ( qItm := ::oWidget:itemAt( qPos ) ):hasValidPointer()
             IF ( n := ascan( ::aItems, {|o| hbqt_IsEqualGcQtPointer( o, qItm ) } ) ) > 0
                qPt := ::oWidget:mapToGlobal( QPoint( p ) )
                eval( ::hb_contextMenu, { qPt:x(), qPt:y() }, NIL, ::aItems[ n ] )
@@ -363,7 +363,7 @@ METHOD XbpListBox:clear( lConnect )
       qItm := NIL
    NEXT
    ::aItems := {}
-   IF ::oWidget:isValidObject()
+   IF ::oWidget:hasValidPointer()
       IF lConnect
          ::oWidget:clear()
       ENDIF
diff --git a/harbour/contrib/hbxbp/xbptreeview.prg b/harbour/contrib/hbxbp/xbptreeview.prg
index 5f0f51c511..0936ac0136 100644
--- a/harbour/contrib/hbxbp/xbptreeview.prg
+++ b/harbour/contrib/hbxbp/xbptreeview.prg
@@ -207,7 +207,7 @@ METHOD XbpTreeView:execSlot( cSlot, p )
    CASE cSlot == "customContextMenuRequested(QPoint)"
       IF hb_isBlock( ::hb_contextMenu )
          qPos := QPoint( p )
-         IF ( qItem := ::oWidget:itemAt( qPos ) ):isValidObject()
+         IF ( qItem := ::oWidget:itemAt( qPos ) ):hasValidPointer()
             IF ( n := ascan( ::aItems, {|o| hbqt_IsEqualGcQtPointer( o:oWidget, qItem ) } ) ) > 0
                qPt := ::oWidget:mapToGlobal( QPoint( p ) )
                eval( ::hb_contextMenu, { qPt:x(), qPt:y() }, NIL, ::aItems[ n ] )
diff --git a/harbour/contrib/hbxbp/xbpwindow.prg b/harbour/contrib/hbxbp/xbpwindow.prg
index 98c7a929e1..c7179bddb7 100644
--- a/harbour/contrib/hbxbp/xbpwindow.prg
+++ b/harbour/contrib/hbxbp/xbpwindow.prg
@@ -381,7 +381,7 @@ METHOD XbpWindow:setQtProperty( cProperty )
 
 METHOD XbpWindow:postCreate()
 
-   ::status := iif( ::oWidget:isValidObject(), XBP_STAT_CREATE, XBP_STAT_FAILURE )
+   ::status := iif( ::oWidget:hasValidPointer(), XBP_STAT_CREATE, XBP_STAT_FAILURE )
 
    RETURN Self