diff --git a/src/common/dlgcmn.cpp b/src/common/dlgcmn.cpp
new file mode 100644
index 0000000000..c708a96e25
--- /dev/null
+++ b/src/common/dlgcmn.cpp
@@ -0,0 +1,176 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        common/dlgcmn.cpp
+// Purpose:     common (to all ports) wxDialog functions
+// Author:      Vadim Zeitlin
+// Modified by:
+// Created:     28.06.99
+// RCS-ID:      $Id$
+// Copyright:   (c) Vadim Zeitlin
+// Licence:     wxWindows license
+/////////////////////////////////////////////////////////////////////////////
+
+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
+#if 0
+#ifdef __GNUG__
+    #pragma implementation
+#endif
+#endif
+
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#ifdef __BORLANDC__
+    #pragma hdrstop
+#endif
+
+#ifndef WX_PRECOMP
+    #include "wx/dialog.h"
+    #include "wx/dcclient.h"
+    #include "wx/settings.h"
+#endif
+
+// ----------------------------------------------------------------------------
+// constants
+// ----------------------------------------------------------------------------
+
+const long wxDialogBase::LAYOUT_X_MARGIN = 5;
+const long wxDialogBase::LAYOUT_Y_MARGIN = 5;
+
+const long wxDialogBase::MARGIN_BETWEEN_BUTTONS = 3*LAYOUT_X_MARGIN;
+
+// ============================================================================
+// implementation
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// dialog layout functions
+// ----------------------------------------------------------------------------
+
+wxSize wxDialogBase::SplitTextMessage(const wxString& message,
+                                      wxArrayString *lines)
+{
+    wxClientDC dc(this);
+    dc.SetFont(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
+
+    wxString curLine;
+    long height, width, heightTextMax = 0, widthTextMax = 0;
+    for ( const wxChar *pc = message; ; pc++ )
+    {
+        if ( *pc == _T('\n') || !*pc )
+        {
+            dc.GetTextExtent(curLine, &width, &height);
+            if ( width > widthTextMax )
+                widthTextMax = width;
+            if ( height > heightTextMax )
+                heightTextMax = height;
+
+            lines->Add(curLine);
+
+            if ( !*pc )
+            {
+               // the end of string
+               break;
+            }
+
+            curLine.Empty();
+        }
+        else
+        {
+            curLine += *pc;
+        }
+    }
+
+    return wxSize(widthTextMax, heightTextMax);
+}
+
+long wxDialogBase::CreateTextMessage(const wxArrayString& lines,
+                                     const wxPoint& posText,
+                                     const wxSize& sizeText)
+{
+    wxStaticText *text;
+    int y = posText.y;
+    size_t nLineCount = lines.GetCount();
+    for ( size_t nLine = 0; nLine < nLineCount; nLine++ )
+    {
+        text = new wxStaticText(this, -1, lines[nLine],
+                                wxPoint(posText.x, y),
+                                sizeText);
+        y += sizeText.GetHeight();
+    }
+
+    return y;
+}
+
+wxSize wxDialogBase::GetStandardButtonSize(bool hasCancel)
+{
+    int wButton = 0;
+    GetTextExtent(_("OK"), &wButton, NULL);
+
+    if ( hasCancel )
+    {
+        int width;
+        GetTextExtent(_("Cancel"), &width, NULL);
+        if ( width > wButton )
+            wButton = width;
+    }
+
+    if ( wButton < 75 )
+    {
+        // the minimal acceptable width
+        wButton = 75;
+    }
+    else
+    {
+        // the width of the button is not just the width of the label...
+        wButton += 2*LAYOUT_X_MARGIN;
+    }
+
+    // a nice looking proportion
+    int hButton = (wButton * 23) / 75;
+
+    return wxSize(wButton, hButton);
+}
+
+void wxDialogBase::CreateStandardButtons(long wDialog,
+                                         long y,
+                                         long wButton,
+                                         long hButton,
+                                         bool hasCancel)
+{
+    // NB: create [Ok] first to get the right tab order
+    wxButton *ok = (wxButton *) NULL;
+    wxButton *cancel = (wxButton *) NULL;
+
+    long x = wDialog / 2;
+    if ( hasCancel )
+        x -= MARGIN_BETWEEN_BUTTONS / 2 + wButton;
+    else
+        x -= wButton / 2;
+
+    ok = new wxButton( this, wxID_OK, _("OK"),
+                       wxPoint(x, y),
+                       wxSize(wButton, hButton) );
+
+    if ( hasCancel )
+    {
+        x += MARGIN_BETWEEN_BUTTONS + wButton;
+        cancel = new wxButton( this, wxID_CANCEL, _("Cancel"),
+                               wxPoint(x, y),
+                               wxSize(wButton, hButton) );
+    }
+
+    ok->SetDefault();
+    ok->SetFocus();
+}
+
+long wxDialogBase::GetStandardTextHeight()
+{
+    return (3*GetCharHeight()) / 2;
+}