]> git.saurik.com Git - wxWidgets.git/blobdiff - src/os2/window.cpp
fixing mngw32 (cross)compilation
[wxWidgets.git] / src / os2 / window.cpp
index 0573448e600f9e6ff69f6f1bbbcb283f9f65b19c..94d3060d5e1b3deb8e471ee948d0762c3fc60343 100644 (file)
@@ -153,6 +153,7 @@ BEGIN_EVENT_TABLE(wxWindow, wxWindowBase)
     EVT_SYS_COLOUR_CHANGED(wxWindow::OnSysColourChanged)
     EVT_INIT_DIALOG(wxWindow::OnInitDialog)
     EVT_IDLE(wxWindow::OnIdle)
+    EVT_SET_FOCUS(wxWindow::OnSetFocus)
 END_EVENT_TABLE()
 
 // ===========================================================================
@@ -309,8 +310,6 @@ wxWindow::~wxWindow()
 
     if (m_hWnd)
     {
-//      UnsubclassWin();
-
         if(!::WinDestroyWindow(GetHWND()))
             wxLogLastError(wxT("DestroyWindow"));
         //
@@ -330,6 +329,7 @@ bool wxWindow::Create(
 )
 {
     HWND                            hParent = NULLHANDLE;
+    wxPoint                         vPos = rPos; // The OS/2 position
 
     wxCHECK_MSG(pParent, FALSE, wxT("can't create wxWindow without parent"));
 
@@ -347,9 +347,19 @@ bool wxWindow::Create(
     {
         pParent->AddChild(this);
         hParent = GetWinHwnd(pParent);
+        //
+        // OS2 uses normal coordinates, no bassackwards Windows ones
+        //
+        vPos.y = pParent->GetSize().y - (vPos.y + rSize.y);
     }
     else
-       hParent = HWND_DESKTOP;
+    {
+        RECTL                   vRect;
+
+        ::WinQueryWindowRect(HWND_DESKTOP, &vRect);
+        hParent = HWND_DESKTOP;
+        vPos.y = vRect.yTop - (vPos.y + rSize.y);
+    }
 
     ULONG                           ulCreateFlags = 0L;
 
@@ -359,6 +369,12 @@ bool wxWindow::Create(
     // set in those class create procs.  PM's basic windows styles are
     // very limited.
     //
+    ulCreateFlags |=  WS_VISIBLE;
+
+
+    if ( lStyle & wxCLIP_SIBLINGS )
+        ulCreateFlags |= WS_CLIPSIBLINGS;
+
     if (lStyle & wxCLIP_CHILDREN )
         ulCreateFlags |= WS_CLIPCHILDREN;
 
@@ -377,8 +393,8 @@ bool wxWindow::Create(
               ,(PSZ)wxCanvasClassName
               ,rName.c_str()
               ,ulCreateFlags
-              ,rPos.x
-              ,rPos.y
+              ,vPos.x
+              ,vPos.y
               ,WidthDefault(rSize.x)
               ,HeightDefault(rSize.y)
               ,NULLHANDLE
@@ -715,19 +731,12 @@ void wxWindow::SubclassWin(
     HWND                            hwnd = (HWND)hWnd;
 
     wxASSERT_MSG( !m_fnOldWndProc, wxT("subclassing window twice?") );
-
     wxCHECK_RET(::WinIsWindow(vHabmain, hwnd), wxT("invalid HWND in SubclassWin") );
-
-//  wxAssociateWinWithHandle(hwnd, this);
-
     m_fnOldWndProc = (WXFARPROC) ::WinSubclassWindow(hwnd, (PFNWP)wxWndProc);
-//    ::WinSetWindowULong(hwnd, QWL_USER, (ULONG)wxWndProc);
 } // end of wxWindow::SubclassWin
 
 void wxWindow::UnsubclassWin()
 {
-//    wxRemoveHandleAssociation(this);
-
     //
     // Restore old Window proc
     //
@@ -735,11 +744,10 @@ void wxWindow::UnsubclassWin()
 
     if (m_hWnd)
     {
-//        m_hWnd = 0;
-
         wxCHECK_RET( ::WinIsWindow(vHabmain, hwnd), wxT("invalid HWND in UnsubclassWin") );
 
         PFNWP                       fnProc = (PFNWP)::WinQueryWindowPtr(hwnd, QWP_PFNWP);
+
         if ( (m_fnOldWndProc != 0) && (fnProc != (PFNWP) m_fnOldWndProc))
         {
             WinSubclassWindow(hwnd, (PFNWP)m_fnOldWndProc);
@@ -1100,7 +1108,10 @@ void wxWindow::DoGetClientSize(
     RECTL                           vRect;
 
     hWndClient = ::WinWindowFromID(GetHwnd(), FID_CLIENT);
-    ::WinQueryWindowRect(hWndClient, &vRect);
+    if( hWndClient == NULLHANDLE)
+       ::WinQueryWindowRect(GetHwnd(), &vRect);
+    else
+       ::WinQueryWindowRect(hWndClient, &vRect);
 
     if (pWidth)
         *pWidth  = vRect.xRight;
@@ -1324,10 +1335,12 @@ int wxWindow::GetCharHeight() const
     hPs = ::WinGetPS(GetHwnd());
 
     if(!GpiQueryFontMetrics(hPs, sizeof(FONTMETRICS), &vFontMetrics))
+    {
+        ::WinReleasePS(hPs);
         return (0);
-    else
-        return(vFontMetrics.lMaxAscender + vFontMetrics.lMaxDescender);
+    }
     ::WinReleasePS(hPs);
+    return(vFontMetrics.lMaxAscender + vFontMetrics.lMaxDescender);
 } // end of wxWindow::GetCharHeight
 
 int wxWindow::GetCharWidth() const
@@ -1338,10 +1351,12 @@ int wxWindow::GetCharWidth() const
     hPs = ::WinGetPS(GetHwnd());
 
     if(!GpiQueryFontMetrics(hPs, sizeof(FONTMETRICS), &vFontMetrics))
+    {
+        ::WinReleasePS(hPs);
         return (0);
-    else
-        return(vFontMetrics.lAveCharWidth);
+    }
     ::WinReleasePS(hPs);
+    return(vFontMetrics.lAveCharWidth);
 } // end of wxWindow::GetCharWidth
 
 void wxWindow::GetTextExtent(
@@ -1703,7 +1718,11 @@ bool wxWindow::OS2TranslateMessage(
   WXMSG*                            pMsg
 )
 {
-    return m_acceleratorTable.Translate(m_hWnd, pMsg);
+#if wxUSE_ACCEL
+  return m_acceleratorTable.Translate(m_hWnd, pMsg);
+#else
+  return FALSE;
+#endif //wxUSE_ACCEL
 } // end of wxWindow::OS2TranslateMessage
 
 // ---------------------------------------------------------------------------
@@ -1719,8 +1738,8 @@ void wxWindow::UnpackCommand(
 )
 {
     *pId = LOWORD(wParam);
-    *phWnd = (WXHWND)lParam;
-    *pCmd = HIWORD(wParam);
+    *phWnd = NULL;  // or may be GetHWND() ?
+    *pCmd = LOWORD(lParam);
 } // end of wxWindow::UnpackCommand
 
 void wxWindow::UnpackActivate(
@@ -1802,7 +1821,7 @@ MRESULT EXPENTRY wxWndProc(
         pWnd->SetHWND((WXHWND)hWnd);
     }
 
-    MRESULT                         rc = (MRESULT)FALSE;
+    MRESULT                         rc = (MRESULT)0;
 
 
     //
@@ -1821,6 +1840,7 @@ MRESULT EXPENTRY wxWndProc(
         else
             rc = ::WinDefWindowProc(hWnd, ulMsg, wParam, lParam);
     }
+
     return rc;
 } // end of wxWndProc
 
@@ -1843,17 +1863,6 @@ MRESULT wxWindow::OS2WindowProc(
     WXHICON                         hIcon;
     WXHBRUSH                        hBrush;
 
-    //
-    // The return value
-    //
-//  union
-//  {
-//      bool                        bAllow;
-//      MRESULT                     mResult;
-//      WXHICON                     hIcon;
-//      WXHBRUSH                    hBrush;
-//  } vRc;
-
     //
     // For most messages we should return 0 when we do process the message
     //
@@ -1881,7 +1890,6 @@ MRESULT wxWindow::OS2WindowProc(
         case WM_DESTROY:
              HandleDestroy();
              bProcessed = TRUE;
-             delete this;
              break;
 
         case WM_MOVE:
@@ -1986,15 +1994,16 @@ MRESULT wxWindow::OS2WindowProc(
         case WM_DRAWITEM:
         case WM_MEASUREITEM:
             {
-                int idCtrl = (UINT)wParam;
+                int                 nIdCtrl = (UINT)wParam;
+
                 if ( uMsg == WM_DRAWITEM )
                 {
-                    bProcessed = OS2OnDrawItem(idCtrl,
+                    bProcessed = OS2OnDrawItem(nIdCtrl,
                                               (WXDRAWITEMSTRUCT *)lParam);
                 }
                 else
                 {
-                    bProcessed = OS2OnMeasureItem(idCtrl,
+                    bProcessed = OS2OnMeasureItem(nIdCtrl,
                                                  (WXMEASUREITEMSTRUCT *)lParam);
                 }
 
@@ -2109,6 +2118,15 @@ MRESULT wxWindow::OS2WindowProc(
             }
             break;
 #endif
+        case WM_ERASEBACKGROUND:
+            //
+            // Returning TRUE to requestw PM to paint the window background
+            // in SYSCLR_WINDOW. We don't really want that
+            //
+            bProcessed = HandleEraseBkgnd((WXHDC)(HPS)wParam);
+            mResult = (MRESULT)(FALSE);
+            break;
+
         //
         // Instead of CTLCOLOR messages PM sends QUERYWINDOWPARAMS to
         // things such as colors and fonts and such
@@ -2136,17 +2154,6 @@ MRESULT wxWindow::OS2WindowProc(
             bProcessed = HandlePresParamChanged(wParam);
             break;
 
-        // move this to wxFrame
-        case WM_ERASEBACKGROUND:
-            bProcessed = HandleEraseBkgnd((WXHDC)(HDC)wParam);
-            if (bProcessed)
-            {
-                //
-                // We processed the message, i.e. erased the background
-                //
-                mResult = (MRESULT)TRUE;
-            }
-            break;
 
         // move all drag and drops to wxDrg
         case WM_ENDDRAG:
@@ -2191,14 +2198,16 @@ MRESULT wxWindow::OS2WindowProc(
             }
             break;
     }
-
     if (!bProcessed)
     {
 #ifdef __WXDEBUG__
         wxLogTrace(wxTraceMessages, wxT("Forwarding %s to DefWindowProc."),
                    wxGetMessageName(uMsg));
 #endif // __WXDEBUG__
-        mResult = OS2DefWindowProc(uMsg, wParam, lParam);
+        if (IsKindOf(CLASSINFO(wxFrame)))
+            mResult = ::WinDefWindowProc(m_hWnd, uMsg, wParam, lParam);
+        else
+            mResult = OS2DefWindowProc(uMsg, wParam, lParam);
     }
     return mResult;
 } // end of wxWindow::OS2WindowProc
@@ -2337,11 +2346,13 @@ bool wxWindow::OS2Create(
 {
     ERRORID                         vError;
     wxString                        sError;
-    long                            lX1      = (long)CW_USEDEFAULT;
+    long                            lX1      = 0L;
     long                            lY1      = 0L;
-    long                            lWidth1  = (long)CW_USEDEFAULT;
-    long                            lHeight1 = 100L;
+    long                            lWidth1  = 20L;
+    long                            lHeight1 = 20L;
     int                             nControlId = 0;
+    int                             nNeedsubclass = 0;
+    PCSZ                            pszClass = zClass;
 
     //
     // Find parent's size, if it exists, to set up a possible default
@@ -2381,6 +2392,21 @@ bool wxWindow::OS2Create(
     {
             nControlId = ulId;
     }
+    else
+    {
+        // no standard controls
+        if(wxString (wxT("wxFrameClass")) == wxString(zClass) )
+        {
+            pszClass =  WC_FRAME;
+            nNeedsubclass = 1;
+        }
+        else
+        {
+            nControlId = ulId;
+            if(nControlId < 0)
+                nControlId = FID_CLIENT;
+        }
+    }
 
     //
     // We will either have a registered class via string name or a standard PM Class via a long
@@ -2393,9 +2419,9 @@ bool wxWindow::OS2Create(
                                        ,(LONG)lY1
                                        ,(LONG)lWidth
                                        ,(LONG)lHeight
-                                       ,NULLHANDLE
+                                       ,hOwner
                                        ,HWND_TOP
-                                       ,(ULONG)ulId
+                                       ,(ULONG)nControlId
                                        ,pCtlData
                                        ,pPresParams
                                       );
@@ -2426,12 +2452,17 @@ bool wxWindow::OS2Create(
     wxAssociateWinWithHandle((HWND)m_hWnd
                              ,this
                             );
-    // 
+    //
     // Now need to subclass window.
     //
-
-    SubclassWin(GetHWND());
-
+    if(!nNeedsubclass)
+    {
+         wxAssociateWinWithHandle((HWND)m_hWnd,this);
+    }
+    else
+    {
+        SubclassWin(GetHWND());
+    }
     return TRUE;
 } // end of wxWindow::OS2Create
 
@@ -2635,78 +2666,194 @@ bool wxWindow::OS2OnDrawItem(
 , WXDRAWITEMSTRUCT*                 pItemStruct
 )
 {
-    //
-    // I'll get to owner drawn stuff later
-    //
+    wxDC                            vDc;
 
+#if wxUSE_OWNER_DRAWN
     //
-    // is it a menu item or control?
+    // Is it a menu item?
     //
-    wxWindow*                       pItem = FindItem(vId);
-
-#if wxUSE_OWNER_DRAWN
-    if (pItem && pItem->IsKindOf(CLASSINFO(wxControl)))
-    {
-        return ((wxControl *)pItem)->OS2OnDraw(pItemStruct);
-    }
-    else if (pItem && pItem->IsKindOf(CLASSINFO(wxMenu)))
+    if (vId == 0)
     {
-        /*
-        // TODO: draw a menu item
+        ERRORID                     vError;
+        wxString                    sError;
+        POWNERITEM                  pMeasureStruct = (POWNERITEM)pItemStruct;
+        wxFrame*                    pFrame = (wxFrame*)this;
+        wxMenuItem*                 pMenuItem = pFrame->GetMenuBar()->FindItem(pMeasureStruct->idItem, pMeasureStruct->hItem);
+        HDC                         hDC = ::GpiQueryDevice(pMeasureStruct->hps);
+        wxRect                      vRect( pMeasureStruct->rclItem.xLeft
+                                          ,pMeasureStruct->rclItem.yBottom
+                                          ,pMeasureStruct->rclItem.xRight - pMeasureStruct->rclItem.xLeft
+                                          ,pMeasureStruct->rclItem.yTop - pMeasureStruct->rclItem.yBottom
+                                         );
+        vDc.SetHDC( hDC
+                   ,FALSE
+                  );
+        vDc.SetHPS(pMeasureStruct->hps);
+        //
+        // Load the wxWindows Pallete and set to RGB mode
+        //
+        if (!::GpiCreateLogColorTable( pMeasureStruct->hps
+                                      ,0L
+                                      ,LCOLF_CONSECRGB
+                                      ,0L
+                                      ,(LONG)wxTheColourDatabase->m_nSize
+                                      ,(PLONG)wxTheColourDatabase->m_palTable
+                                     ))
+        {
+            vError = ::WinGetLastError(vHabmain);
+            sError = wxPMErrorToStr(vError);
+            wxLogError("Unable to set current color table. Error: %s\n", sError);
+        }
         //
-        POWNERITEM                  pDrawStruct = (OWNERITEM *)pItemStruct;
-        wxMenuItem*                 pMenuItem = (wxMenuItem *)(pDrawStruct->pItemData);
+        // Set the color table to RGB mode
+        //
+        if (!::GpiCreateLogColorTable( pMeasureStruct->hps
+                                      ,0L
+                                      ,LCOLF_RGB
+                                      ,0L
+                                      ,0L
+                                      ,NULL
+                                     ))
+        {
+            vError = ::WinGetLastError(vHabmain);
+            sError = wxPMErrorToStr(vError);
+            wxLogError("Unable to set current color table. Error: %s\n", sError);
+        }
+
+        wxCHECK( pMenuItem->IsKindOf(CLASSINFO(wxMenuItem)), FALSE );
+
 
-        wxCHECK(pMenuItem->IsKindOf(CLASSINFO(wxMenuItem)), FALSE);
+        int                         eAction = 0;
+        int                         eStatus = 0;
 
+        if (pMeasureStruct->fsAttribute == pMeasureStruct->fsAttributeOld)
+        {
+            //
+            // Entire Item needs to be redrawn (either it has reappeared from
+            // behind another window or is being displayed for the first time
+            //
+            eAction = wxOwnerDrawn::wxODDrawAll;
+
+            if (pMeasureStruct->fsAttribute & MIA_HILITED)
+            {
+                //
+                // If it is currently selected we let the system handle it
+                //
+                eStatus |= wxOwnerDrawn::wxODSelected;
+            }
+            if (pMeasureStruct->fsAttribute & MIA_CHECKED)
+            {
+                //
+                // If it is currently checked we draw our own
+                //
+                eStatus |= wxOwnerDrawn::wxODChecked;
+                pMeasureStruct->fsAttributeOld = pMeasureStruct->fsAttribute &= ~MIA_CHECKED;
+            }
+            if (pMeasureStruct->fsAttribute & MIA_DISABLED)
+            {
+                //
+                // If it is currently disabled we let the system handle it
+                //
+                eStatus |= wxOwnerDrawn::wxODDisabled;
+            }
+            //
+            // Don't really care about framed (indicationg focus) or NoDismiss
+            //
+        }
+        else
+        {
+            if (pMeasureStruct->fsAttribute & MIA_HILITED)
+            {
+                eAction = wxOwnerDrawn::wxODDrawAll;
+                eStatus |= wxOwnerDrawn::wxODSelected;
+                //
+                // Keep the system from trying to highlight with its bogus colors
+                //
+                pMeasureStruct->fsAttributeOld = pMeasureStruct->fsAttribute &= ~MIA_HILITED;
+            }
+            else if (!(pMeasureStruct->fsAttribute & MIA_HILITED))
+            {
+                eAction = wxOwnerDrawn::wxODDrawAll;
+                eStatus = 0;
+                //
+                // Keep the system from trying to highlight with its bogus colors
+                //
+                pMeasureStruct->fsAttribute = pMeasureStruct->fsAttributeOld &= ~MIA_HILITED;
+            }
+            else
+            {
+                //
+                // For now we don't care about anything else
+                // just ignore the entire message!
+                //
+                return TRUE;
+            }
+        }
         //
-        // Prepare to call OnDrawItem()
+        // Now redraw the item
+        //
+        return(pMenuItem->OnDrawItem( vDc
+                                     ,vRect
+                                     ,(wxOwnerDrawn::wxODAction)eAction
+                                     ,(wxOwnerDrawn::wxODStatus)eStatus
+                                    ));
+        //
+        // leave the fsAttribute and fsOldAttribute unchanged.  If different,
+        // the system will do the highlight or fraeming or disabling for us,
+        // otherwise, we'd have to do it ourselves.
         //
-        HPSdc;
-        dc.SetHDC((WXHDC)pDrawStruct->hDC, FALSE);
-        wxRect rect(pDrawStruct->rcItem.left, pDrawStruct->rcItem.top,
-                    pDrawStruct->rcItem.right - pDrawStruct->rcItem.left,
-                    pDrawStruct->rcItem.bottom - pDrawStruct->rcItem.top);
-
-        return pMenuItem->OnDrawItem
-                          (
-                            dc, rect,
-                            (wxOwnerDrawn::wxODAction)pDrawStruct->itemAction,
-                            (wxOwnerDrawn::wxODStatus)pDrawStruct->itemState
-                          );
-        */
     }
 
-    else
-        return FALSE;
+    wxWindow*                       pItem = FindItem(vId);
+
+    if (pItem && pItem->IsKindOf(CLASSINFO(wxControl)))
+    {
+        return ((wxControl *)pItem)->OS2OnDraw(pItemStruct);
+    }
 #endif
-    return TRUE;
+    return FALSE;
 } // end of wxWindow::OS2OnDrawItem
 
-bool wxWindow::OS2OnMeasureItem(int id, WXMEASUREITEMSTRUCT *itemStruct)
+bool wxWindow::OS2OnMeasureItem(
+  int                               lId
+, WXMEASUREITEMSTRUCT*              pItemStruct
+)
 {
-   // TODO: more owner drawn menu related stuff, get to it later
-/*
-#if wxUSE_OWNER_DRAWN
-    // is it a menu item?
-    if ( id == 0 )
+    //
+    // Is it a menu item?
+    //
+    if (lId == 65536) // I really don't like this...has to be a better indicator
     {
-        MEASUREITEMSTRUCT *pMeasureStruct = (MEASUREITEMSTRUCT *)itemStruct;
-        wxMenuItem *pMenuItem = (wxMenuItem *)(pMeasureStruct->itemData);
-
-        wxCHECK( pMenuItem->IsKindOf(CLASSINFO(wxMenuItem)), FALSE );
-
-        return pMenuItem->OnMeasureItem(&pMeasureStruct->itemWidth,
-                                        &pMeasureStruct->itemHeight);
+        if (IsKindOf(CLASSINFO(wxFrame))) // we'll assume if Frame then a menu
+        {
+            size_t                  nWidth;
+            size_t                  nHeight;
+            POWNERITEM              pMeasureStruct = (POWNERITEM)pItemStruct;
+            wxFrame*                pFrame = (wxFrame*)this;
+            wxMenuItem*             pMenuItem = pFrame->GetMenuBar()->FindItem(pMeasureStruct->idItem, pMeasureStruct->hItem);
+
+            wxCHECK( pMenuItem->IsKindOf(CLASSINFO(wxMenuItem)), FALSE );
+            nWidth  = 0L;
+            nHeight = 0L;
+            if (pMenuItem->OnMeasureItem( &nWidth
+                                         ,&nHeight
+                                        ))
+            {
+                pMeasureStruct->rclItem.xRight  = nWidth;
+                pMeasureStruct->rclItem.xLeft   = 0L;
+                pMeasureStruct->rclItem.yTop    = nHeight;
+                pMeasureStruct->rclItem.yBottom = 0L;
+                return TRUE;
+            }
+            return FALSE;
+        }
     }
+    wxWindow*                      pItem = FindItem(lId);
 
-    wxWindow *item = FindItem(id);
-    if ( item && item->IsKindOf(CLASSINFO(wxControl)) )
+    if (pItem && pItem->IsKindOf(CLASSINFO(wxControl)))
     {
-        return ((wxControl *)item)->MSWOnMeasure(itemStruct);
+        return ((wxControl *)pItem)->OS2OnMeasure(pItemStruct);
     }
-#endif  // owner-drawn menus
-*/
     return FALSE;
 }
 
@@ -2823,38 +2970,65 @@ bool wxWindow::HandlePaint()
          wxLogLastError("CreateRectRgn");
          return FALSE;
     }
+
     m_updateRegion = wxRegion(hRgn);
-/*
-    hPS = WinBeginPaint(GetHWND(), 0L, &vRect);
-    WinFillRect(hPS, &vRect, SYSCLR_WINDOW);
-    WinEndPaint(hPS);
-*/
     vEvent.SetEventObject(this);
+    if (!GetEventHandler()->ProcessEvent(vEvent))
+    {
+        HPS                         hPS;
+
+        hPS = ::WinBeginPaint( GetHwnd()
+                              ,NULLHANDLE
+                              ,&vRect
+                             );
+        if(hPS)
+        {
+            ::GpiCreateLogColorTable( hPS
+                                     ,0L
+                                     ,LCOLF_CONSECRGB
+                                     ,0L
+                                     ,(LONG)wxTheColourDatabase->m_nSize
+                                     ,(PLONG)wxTheColourDatabase->m_palTable
+                                    );
+            ::GpiCreateLogColorTable( hPS
+                                     ,0L
+                                     ,LCOLF_RGB
+                                     ,0L
+                                     ,0L
+                                     ,NULL
+                                    );
+
+            ::WinFillRect(hPS, &vRect,  GetBackgroundColour().GetPixel());
+            ::WinEndPaint(hPS);
+        }
+    }
     return (GetEventHandler()->ProcessEvent(vEvent));
 } // end of wxWindow::HandlePaint
 
-bool wxWindow::HandleEraseBkgnd(WXHDC hdc)
+bool wxWindow::HandleEraseBkgnd(
+  WXHDC                             hDC
+)
 {
-    // TODO:  will have to worry about this later as part of
-    //        the handling of changed presentation parameters
-    /*
-    if ( ::IsIconic(GetHwnd()) )
+    SWP                             vSwp;
+
+    ::WinQueryWindowPos(GetHwnd(), &vSwp);
+    if (vSwp.fl & SWP_MINIMIZE)
         return TRUE;
 
-    wxDC dc;
+    wxDC                            vDC;
+
+    vDC.m_hPS = (HPS)hDC; // this is really a PS
+    vDC.SetWindow(this);
+    vDC.BeginDrawing();
 
-    dc.SetHDC(hdc);
-    dc.SetWindow(this);
-    dc.BeginDrawing();
+    wxEraseEvent                    vEvent(m_windowId, &vDC);
+
+    vEvent.SetEventObject(this);
 
-    wxEraseEvent event(m_windowId, &dc);
-    event.SetEventObject(this);
-    bool rc = GetEventHandler()->ProcessEvent(event);
+    bool                            rc = GetEventHandler()->ProcessEvent(vEvent);
 
-    dc.EndDrawing();
-    dc.SelectOldObjects(hdc);
-    dc.SetHDC((WXHDC) NULL);
-    */
+    vDC.EndDrawing();
+    vDC.m_hPS = NULLHANDLE;
     return TRUE;
 } // end of wxWindow::HandleEraseBkgnd
 
@@ -2862,7 +3036,11 @@ void wxWindow::OnEraseBackground(
   wxEraseEvent&                     rEvent
 )
 {
-    // TODO:
+    RECTL                           vRect;
+    HPS                             hPS = rEvent.m_dc->m_hPS;
+
+    ::WinQueryWindowRect(GetHwnd(), &vRect);
+    ::WinFillRect(hPS, &vRect,  m_backgroundColour.GetPixel());
 }  // end of wxWindow::OnEraseBackground
 
 // ---------------------------------------------------------------------------
@@ -3968,3 +4146,45 @@ static void TranslateKbdEventToMouse(
     pWin->ScreenToClient(pX, pY);
 } // end of TranslateKbdEventToMouse
 
+// Find the wxWindow at the current mouse position, returning the mouse
+// position.
+wxWindow* wxFindWindowAtPointer(
+  wxPoint&                          rPt
+)
+{
+    return wxFindWindowAtPoint(wxGetMousePosition());
+}
+
+wxWindow* wxFindWindowAtPoint(
+  const wxPoint&                    rPt
+)
+{
+    POINTL                          vPt2;
+
+    vPt2.x = rPt.x;
+    vPt2.y = rPt.y;
+
+    HWND                            hWndHit = ::WinWindowFromPoint(HWND_DESKTOP, &vPt2, FALSE);
+    wxWindow*                       pWin = wxFindWinFromHandle((WXHWND)hWndHit) ;
+    HWND                            hWnd = hWndHit;
+
+    //
+    // Try to find a window with a wxWindow associated with it
+    //
+    while (!pWin && (hWnd != 0))
+    {
+        hWnd = ::WinQueryWindow(hWnd, QW_PARENT);
+        pWin = wxFindWinFromHandle((WXHWND)hWnd) ;
+    }
+    return pWin;
+}
+
+// Get the current mouse position.
+wxPoint wxGetMousePosition()
+{
+    POINTL                          vPt;
+
+    ::WinQueryPointerPos(HWND_DESKTOP, &vPt);
+    return wxPoint(vPt.x, vPt.y);
+}
+