]> git.saurik.com Git - wxWidgets.git/blobdiff - samples/grid/griddemo.cpp
drag-and-drop adding of controls to test window
[wxWidgets.git] / samples / grid / griddemo.cpp
index ff9f0c084114832a22ac3e0696d67a69333c4c20..d6ceb21e3bbf32a5a5b3696441c3149ff3c0a951 100644 (file)
@@ -2,9 +2,9 @@
 // Name:        griddemo.cpp
 // Purpose:     Grid control wxWidgets sample
 // Author:      Michael Bedward
-// Modified by:
+// Modified by: Santiago Palacios
 // RCS-ID:      $Id$
-// Copyright:   (c) Michael Bedward, Julian Smart
+// Copyright:   (c) Michael Bedward, Julian Smart, Vadim Zeitlin
 // Licence:     wxWindows license
 /////////////////////////////////////////////////////////////////////////////
 
 // headers
 // ----------------------------------------------------------------------------
 
-#if defined(__GNUG__) && !defined(__APPLE__)
-    #pragma implementation
-    #pragma interface
-#endif
-
 // For compilers that support precompilation, includes "wx/wx.h".
 #include "wx/wxprec.h"
 
@@ -73,7 +68,9 @@ BEGIN_EVENT_TABLE( GridFrame, wxFrame )
     EVT_MENU( ID_TOGGLEEDIT, GridFrame::ToggleEditing )
     EVT_MENU( ID_TOGGLEROWSIZING, GridFrame::ToggleRowSizing )
     EVT_MENU( ID_TOGGLECOLSIZING, GridFrame::ToggleColSizing )
+    EVT_MENU( ID_TOGGLECOLMOVING, GridFrame::ToggleColMoving )
     EVT_MENU( ID_TOGGLEGRIDSIZING, GridFrame::ToggleGridSizing )
+    EVT_MENU( ID_TOGGLEGRIDDRAGCELL, GridFrame::ToggleGridDragCell )
     EVT_MENU( ID_TOGGLEGRIDLINES, GridFrame::ToggleGridLines )
     EVT_MENU( ID_AUTOSIZECOLS, GridFrame::AutoSizeCols )
     EVT_MENU( ID_CELLOVERFLOW, GridFrame::CellOverflow )
@@ -98,7 +95,7 @@ BEGIN_EVENT_TABLE( GridFrame, wxFrame )
     EVT_MENU( ID_SET_CELL_FG_COLOUR, GridFrame::SetCellFgColour )
     EVT_MENU( ID_SET_CELL_BG_COLOUR, GridFrame::SetCellBgColour )
 
-    EVT_MENU( ID_ABOUT, GridFrame::About )
+    EVT_MENU( wxID_ABOUT, GridFrame::About )
     EVT_MENU( wxID_EXIT, GridFrame::OnQuit )
     EVT_MENU( ID_VTABLE, GridFrame::OnVTable)
     EVT_MENU( ID_BUGS_TABLE, GridFrame::OnBugsTable)
@@ -113,6 +110,15 @@ BEGIN_EVENT_TABLE( GridFrame, wxFrame )
     EVT_MENU( ID_SELECT_ROW, GridFrame::SelectRow)
     EVT_MENU( ID_SELECT_ALL, GridFrame::SelectAll)
     EVT_MENU( ID_SELECT_UNSELECT, GridFrame::OnAddToSelectToggle)
+    EVT_MENU( ID_SHOW_SELECTION, GridFrame::OnShowSelection)
+
+    EVT_MENU( ID_SIZE_ROW, GridFrame::AutoSizeRow )
+    EVT_MENU( ID_SIZE_COL, GridFrame::AutoSizeCol )
+    EVT_MENU( ID_SIZE_ROW_LABEL, GridFrame::AutoSizeRowLabel )
+    EVT_MENU( ID_SIZE_COL_LABEL, GridFrame::AutoSizeColLabel )
+    EVT_MENU( ID_SIZE_LABELS_COL, GridFrame::AutoSizeLabelsCol )
+    EVT_MENU( ID_SIZE_LABELS_ROW, GridFrame::AutoSizeLabelsRow )
+    EVT_MENU( ID_SIZE_GRID, GridFrame::AutoSizeTable )
 
     EVT_MENU( ID_SET_HIGHLIGHT_WIDTH, GridFrame::OnSetHighlightWidth)
     EVT_MENU( ID_SET_RO_HIGHLIGHT_WIDTH, GridFrame::OnSetROHighlightWidth)
@@ -124,6 +130,7 @@ BEGIN_EVENT_TABLE( GridFrame, wxFrame )
     EVT_GRID_SELECT_CELL( GridFrame::OnSelectCell )
     EVT_GRID_RANGE_SELECT( GridFrame::OnRangeSelected )
     EVT_GRID_CELL_CHANGE( GridFrame::OnCellValueChanged )
+    EVT_GRID_CELL_BEGIN_DRAG( GridFrame::OnCellBeginDrag )
 
     EVT_GRID_EDITOR_SHOWN( GridFrame::OnEditorShown )
     EVT_GRID_EDITOR_HIDDEN( GridFrame::OnEditorHidden )
@@ -135,9 +142,6 @@ GridFrame::GridFrame()
                    wxDefaultPosition,
                    wxDefaultSize )
 {
-    int gridW = 600, gridH = 300;
-    int logW = gridW, logH = 100;
-
     wxMenu *fileMenu = new wxMenu;
     fileMenu->Append( ID_VTABLE, _T("&Virtual table test\tCtrl-V"));
     fileMenu->Append( ID_BUGS_TABLE, _T("&Bugs table test\tCtrl-B"));
@@ -146,18 +150,20 @@ GridFrame::GridFrame()
     fileMenu->Append( wxID_EXIT, _T("E&xit\tAlt-X") );
 
     wxMenu *viewMenu = new wxMenu;
-    viewMenu->Append( ID_TOGGLEROWLABELS,  _T("&Row labels"), _T(""), wxITEM_CHECK );
-    viewMenu->Append( ID_TOGGLECOLLABELS,  _T("&Col labels"), _T(""), wxITEM_CHECK );
-    viewMenu->Append( ID_TOGGLEEDIT,  _T("&Editable"), _T(""), wxITEM_CHECK );
-    viewMenu->Append( ID_TOGGLEROWSIZING, _T("Ro&w drag-resize"), _T(""), wxITEM_CHECK );
-    viewMenu->Append( ID_TOGGLECOLSIZING, _T("C&ol drag-resize"), _T(""), wxITEM_CHECK );
-    viewMenu->Append( ID_TOGGLEGRIDSIZING, _T("&Grid drag-resize"), _T(""), wxITEM_CHECK );
-    viewMenu->Append( ID_TOGGLEGRIDLINES, _T("&Grid Lines"), _T(""), wxITEM_CHECK );
-    viewMenu->Append( ID_SET_HIGHLIGHT_WIDTH, _T("&Set Cell Highlight Width..."), _T("") );
-    viewMenu->Append( ID_SET_RO_HIGHLIGHT_WIDTH, _T("&Set Cell RO Highlight Width..."), _T("") );
+    viewMenu->Append( ID_TOGGLEROWLABELS,  _T("&Row labels"), wxEmptyString, wxITEM_CHECK );
+    viewMenu->Append( ID_TOGGLECOLLABELS,  _T("&Col labels"), wxEmptyString, wxITEM_CHECK );
+    viewMenu->Append( ID_TOGGLEEDIT,  _T("&Editable"), wxEmptyString, wxITEM_CHECK );
+    viewMenu->Append( ID_TOGGLEROWSIZING, _T("Ro&w drag-resize"), wxEmptyString, wxITEM_CHECK );
+    viewMenu->Append( ID_TOGGLECOLSIZING, _T("C&ol drag-resize"), wxEmptyString, wxITEM_CHECK );
+    viewMenu->Append( ID_TOGGLECOLMOVING, _T("Col drag-&move"), wxEmptyString, wxITEM_CHECK );
+    viewMenu->Append( ID_TOGGLEGRIDSIZING, _T("&Grid drag-resize"), wxEmptyString, wxITEM_CHECK );
+    viewMenu->Append( ID_TOGGLEGRIDDRAGCELL, _T("&Grid drag-cell"), wxEmptyString, wxITEM_CHECK );
+    viewMenu->Append( ID_TOGGLEGRIDLINES, _T("&Grid Lines"), wxEmptyString, wxITEM_CHECK );
+    viewMenu->Append( ID_SET_HIGHLIGHT_WIDTH, _T("&Set Cell Highlight Width...") );
+    viewMenu->Append( ID_SET_RO_HIGHLIGHT_WIDTH, _T("&Set Cell RO Highlight Width...") );
     viewMenu->Append( ID_AUTOSIZECOLS, _T("&Auto-size cols") );
-    viewMenu->Append( ID_CELLOVERFLOW, _T("&Overflow cells"), _T(""), wxITEM_CHECK );
-    viewMenu->Append( ID_RESIZECELL, _T("&Resize cell (7,1)"), _T(""), wxITEM_CHECK );
+    viewMenu->Append( ID_CELLOVERFLOW, _T("&Overflow cells"), wxEmptyString, wxITEM_CHECK );
+    viewMenu->Append( ID_RESIZECELL, _T("&Resize cell (7,1)"), wxEmptyString, wxITEM_CHECK );
 
     wxMenu *rowLabelMenu = new wxMenu;
 
@@ -196,10 +202,14 @@ GridFrame::GridFrame()
     selectMenu->Append( ID_SELECT_UNSELECT, _T("Add new cells to the selection"),
                         _T("When off, old selection is deselected before ")
                         _T("selecting the new cells"), wxITEM_CHECK );
+    selectMenu->Append( ID_SHOW_SELECTION,
+                        _T("&Show current selection\tCtrl-Alt-S"));
+    selectMenu->AppendSeparator();
     selectMenu->Append( ID_SELECT_ALL, _T("Select all"));
     selectMenu->Append( ID_SELECT_ROW, _T("Select row 2"));
     selectMenu->Append( ID_SELECT_COL, _T("Select col 2"));
     selectMenu->Append( ID_SELECT_CELL, _T("Select cell (3, 1)"));
+    selectMenu->AppendSeparator();
     selectMenu->Append( ID_DESELECT_ALL, _T("Deselect all"));
     selectMenu->Append( ID_DESELECT_ROW, _T("Deselect row 2"));
     selectMenu->Append( ID_DESELECT_COL, _T("Deselect col 2"));
@@ -213,9 +223,17 @@ GridFrame::GridFrame()
     selectionMenu->Append( ID_SELROWS, _T("Select &Rows") );
     selectionMenu->Append( ID_SELCOLS, _T("Select C&ols") );
 
+    wxMenu *autosizeMenu = new wxMenu;
+    autosizeMenu->Append( ID_SIZE_ROW, _T("Selected &row data") );
+    autosizeMenu->Append( ID_SIZE_COL, _T("Selected &column data") );
+    autosizeMenu->Append( ID_SIZE_ROW_LABEL, _T("Selected row la&bel") );
+    autosizeMenu->Append( ID_SIZE_COL_LABEL, _T("Selected column &label") );
+    autosizeMenu->Append( ID_SIZE_LABELS_COL, _T("Column la&bels") );
+    autosizeMenu->Append( ID_SIZE_LABELS_ROW, _T("Row label&s") );
+    autosizeMenu->Append( ID_SIZE_GRID, _T("Entire &grid") );
 
     wxMenu *helpMenu = new wxMenu;
-    helpMenu->Append( ID_ABOUT, _T("&About wxGrid demo") );
+    helpMenu->Append( wxID_ABOUT, _T("&About wxGrid demo") );
 
     wxMenuBar *menuBar = new wxMenuBar;
     menuBar->Append( fileMenu, _T("&File") );
@@ -223,6 +241,7 @@ GridFrame::GridFrame()
     menuBar->Append( colMenu,  _T("&Colours") );
     menuBar->Append( editMenu, _T("&Edit") );
     menuBar->Append( selectMenu, _T("&Select") );
+    menuBar->Append( autosizeMenu, _T("&Autosize") );
     menuBar->Append( helpMenu, _T("&Help") );
 
     SetMenuBar( menuBar );
@@ -234,6 +253,10 @@ GridFrame::GridFrame()
                        wxPoint( 0, 0 ),
                        wxSize( 400, 300 ) );
 
+#if wxUSE_LOG
+    int gridW = 600, gridH = 300;
+    int logW = gridW, logH = 100;
+
     logWin = new wxTextCtrl( this,
                              wxID_ANY,
                              wxEmptyString,
@@ -242,8 +265,9 @@ GridFrame::GridFrame()
                              wxTE_MULTILINE );
 
     logger = new wxLogTextCtrl( logWin );
-    m_logOld = logger->SetActiveTarget( logger );
-    logger->SetTimestamp( NULL );
+    m_logOld = wxLog::SetActiveTarget( logger );
+    wxLog::SetTimestamp( NULL );
+#endif // wxUSE_LOG
 
     // this will create a grid and, by default, an associated grid
     // table for strings
@@ -340,15 +364,16 @@ GridFrame::GridFrame()
                    1,
                    wxEXPAND );
 
+#if wxUSE_LOG
     topSizer->Add( logWin,
                    0,
                    wxEXPAND );
+#endif // wxUSE_LOG
 
     SetAutoLayout(true);
     SetSizer( topSizer );
 
     topSizer->Fit( this );
-    topSizer->SetSizeHints( this );
 
     Centre();
     SetDefaults();
@@ -357,7 +382,9 @@ GridFrame::GridFrame()
 
 GridFrame::~GridFrame()
 {
+#if wxUSE_LOG
     delete wxLog::SetActiveTarget(m_logOld);
+#endif // wxUSE_LOG
 }
 
 
@@ -368,7 +395,9 @@ void GridFrame::SetDefaults()
     GetMenuBar()->Check( ID_TOGGLEEDIT, true );
     GetMenuBar()->Check( ID_TOGGLEROWSIZING, true );
     GetMenuBar()->Check( ID_TOGGLECOLSIZING, true );
+    GetMenuBar()->Check( ID_TOGGLECOLMOVING, false );
     GetMenuBar()->Check( ID_TOGGLEGRIDSIZING, true );
+    GetMenuBar()->Check( ID_TOGGLEGRIDDRAGCELL, false );
     GetMenuBar()->Check( ID_TOGGLEGRIDLINES, true );
     GetMenuBar()->Check( ID_CELLOVERFLOW, true );
 }
@@ -420,12 +449,23 @@ void GridFrame::ToggleColSizing( wxCommandEvent& WXUNUSED(ev) )
         GetMenuBar()->IsChecked( ID_TOGGLECOLSIZING ) );
 }
 
+void GridFrame::ToggleColMoving( wxCommandEvent& WXUNUSED(ev) )
+{
+    grid->EnableDragColMove(
+        GetMenuBar()->IsChecked( ID_TOGGLECOLMOVING ) );
+}
+
 void GridFrame::ToggleGridSizing( wxCommandEvent& WXUNUSED(ev) )
 {
     grid->EnableDragGridSize(
         GetMenuBar()->IsChecked( ID_TOGGLEGRIDSIZING ) );
 }
 
+void GridFrame::ToggleGridDragCell( wxCommandEvent& WXUNUSED(ev) )
+{
+    grid->EnableDragCell(
+        GetMenuBar()->IsChecked( ID_TOGGLEGRIDDRAGCELL ) );
+}
 
 void GridFrame::ToggleGridLines( wxCommandEvent& WXUNUSED(ev) )
 {
@@ -645,28 +685,86 @@ void GridFrame::DeleteSelectedRows( wxCommandEvent& WXUNUSED(ev) )
 {
     if ( grid->IsSelection() )
     {
-        grid->BeginBatch();
+        wxGridUpdateLocker locker(grid);
         for ( int n = 0; n < grid->GetNumberRows(); )
+        {
             if ( grid->IsInSelection( n , 0 ) )
                 grid->DeleteRows( n, 1 );
-        else
-            n++;
-        grid->EndBatch();
+            else
+                n++;
+        }
     }
 }
 
 
+void GridFrame::AutoSizeRow(wxCommandEvent& WXUNUSED(event))
+{
+    wxGridUpdateLocker locker(grid);
+    const wxArrayInt sels  = grid->GetSelectedRows();
+    for ( size_t n = 0, count = sels.size(); n < count; n++ )
+    {
+        grid->AutoSizeRow( sels[n], false );
+    }
+}
+
+void GridFrame::AutoSizeCol(wxCommandEvent& WXUNUSED(event))
+{
+    wxGridUpdateLocker locker(grid);
+    const wxArrayInt sels  = grid->GetSelectedCols();
+    for ( size_t n = 0, count = sels.size(); n < count; n++ )
+    {
+        grid->AutoSizeColumn( sels[n], false );
+    }
+}
+
+void GridFrame::AutoSizeRowLabel(wxCommandEvent& WXUNUSED(event))
+{
+    wxGridUpdateLocker locker(grid);
+    const wxArrayInt sels  = grid->GetSelectedRows();
+    for ( size_t n = 0, count = sels.size(); n < count; n++ )
+    {
+        grid->AutoSizeRowLabelSize( sels[n] );
+    }
+}
+
+void GridFrame::AutoSizeColLabel(wxCommandEvent& WXUNUSED(event))
+{
+    wxGridUpdateLocker locker(grid);
+    const wxArrayInt sels  = grid->GetSelectedCols();
+    for ( size_t n = 0, count = sels.size(); n < count; n++ )
+    {
+        grid->AutoSizeColLabelSize( sels[n] );
+    }
+}
+
+void GridFrame::AutoSizeLabelsCol(wxCommandEvent& WXUNUSED(event))
+{
+    grid->SetColLabelSize( wxGRID_AUTOSIZE );
+}
+
+void GridFrame::AutoSizeLabelsRow(wxCommandEvent& WXUNUSED(event))
+{
+    grid->SetRowLabelSize( wxGRID_AUTOSIZE );
+}
+
+void GridFrame::AutoSizeTable(wxCommandEvent& WXUNUSED(event))
+{
+    grid->AutoSize();
+}
+
+
 void GridFrame::DeleteSelectedCols( wxCommandEvent& WXUNUSED(ev) )
 {
     if ( grid->IsSelection() )
     {
-        grid->BeginBatch();
+        wxGridUpdateLocker locker(grid);
         for ( int n = 0; n < grid->GetNumberCols(); )
+        {
             if ( grid->IsInSelection( 0 , n ) )
                 grid->DeleteCols( n, 1 );
-        else
-            n++;
-        grid->EndBatch();
+            else
+                n++;
+        }
     }
 }
 
@@ -708,7 +806,8 @@ void GridFrame::SetCellBgColour( wxCommandEvent& WXUNUSED(ev) )
     {
         // Check the new Refresh function by passing it a rectangle
         // which exactly fits the grid.
-        wxRect r(wxPoint(0, 0), grid->GetSize());
+        wxPoint pt(0, 0);
+        wxRect r(pt, grid->GetSize());
         grid->SetDefaultCellBackgroundColour(col);
         grid->Refresh(true, &r);
     }
@@ -761,7 +860,7 @@ void GridFrame::OnAddToSelectToggle(wxCommandEvent& event)
 
 void GridFrame::OnLabelLeftClick( wxGridEvent& ev )
 {
-    logBuf = _T("");
+    wxString logBuf;
     if ( ev.GetRow() != -1 )
     {
         logBuf << _T("Left click on row label ") << ev.GetRow();
@@ -775,8 +874,10 @@ void GridFrame::OnLabelLeftClick( wxGridEvent& ev )
         logBuf << _T("Left click on corner label");
     }
 
-    if ( ev.ShiftDown() ) logBuf << _T(" (shift down)");
-    if ( ev.ControlDown() ) logBuf << _T(" (control down)");
+    if ( ev.ShiftDown() )
+        logBuf << _T(" (shift down)");
+    if ( ev.ControlDown() )
+        logBuf << _T(" (control down)");
     wxLogMessage( wxT("%s"), logBuf.c_str() );
 
     // you must call event skip if you want default grid processing
@@ -787,10 +888,7 @@ void GridFrame::OnLabelLeftClick( wxGridEvent& ev )
 
 void GridFrame::OnCellLeftClick( wxGridEvent& ev )
 {
-    logBuf = _T("");
-    logBuf << _T("Left click at row ") << ev.GetRow()
-           << _T(" col ") << ev.GetCol();
-    wxLogMessage( wxT("%s"), logBuf.c_str() );
+    wxLogMessage(_T("Left click at row %d, col %d"), ev.GetRow(), ev.GetCol());
 
     // you must call event skip if you want default grid processing
     // (cell highlighting etc.)
@@ -801,9 +899,7 @@ void GridFrame::OnCellLeftClick( wxGridEvent& ev )
 
 void GridFrame::OnRowSize( wxGridSizeEvent& ev )
 {
-    logBuf = _T("");
-    logBuf << _T("Resized row ") << ev.GetRowOrCol();
-    wxLogMessage( wxT("%s"), logBuf.c_str() );
+    wxLogMessage(_T("Resized row %d"), ev.GetRowOrCol());
 
     ev.Skip();
 }
@@ -811,17 +907,91 @@ void GridFrame::OnRowSize( wxGridSizeEvent& ev )
 
 void GridFrame::OnColSize( wxGridSizeEvent& ev )
 {
-    logBuf = _T("");
-    logBuf << _T("Resized col ") << ev.GetRowOrCol();
-    wxLogMessage( wxT("%s"), logBuf.c_str() );
+    wxLogMessage(_T("Resized col %d"), ev.GetRowOrCol());
 
     ev.Skip();
 }
 
 
+void GridFrame::OnShowSelection(wxCommandEvent& WXUNUSED(event))
+{
+    // max number of elements to dump -- otherwise it can take too much time
+    static const size_t countMax = 100;
+
+    bool rows = false;
+
+    switch ( grid->GetSelectionMode() )
+    {
+        case wxGrid::wxGridSelectCells:
+            {
+                const wxGridCellCoordsArray cells(grid->GetSelectedCells());
+                size_t count = cells.size();
+                wxLogMessage(_T("%lu cells selected:"), (unsigned long)count);
+                if ( count > countMax )
+                {
+                    wxLogMessage(_T("[too many selected cells, ")
+                                 _T("showing only the first %lu]"),
+                                 (unsigned long)countMax);
+                    count = countMax;
+                }
+
+                for ( size_t n = 0; n < count; n++ )
+                {
+                    const wxGridCellCoords& c = cells[n];
+                    wxLogMessage(_T("  selected cell %lu: (%d, %d)"),
+                                 (unsigned long)n, c.GetCol(), c.GetRow());
+                }
+            }
+            break;
+
+        case wxGrid::wxGridSelectRows:
+            rows = true;
+            // fall through
+
+        case wxGrid::wxGridSelectColumns:
+            {
+                const wxChar *plural, *single;
+                if ( rows )
+                {
+                    plural = _T("rows");
+                    single = _T("row");
+                }
+                else // columns
+                {
+                    plural = _T("columns");
+                    single = _T("column");
+                }
+
+                const wxArrayInt sels(rows ? grid->GetSelectedRows()
+                                           : grid->GetSelectedCols());
+                size_t count = sels.size();
+                wxLogMessage(_T("%lu %s selected:"),
+                             (unsigned long)count, plural);
+                if ( count > countMax )
+                {
+                    wxLogMessage(_T("[too many selected %s, ")
+                                 _T("showing only the first %lu]"),
+                                 plural, (unsigned long)countMax);
+                    count = countMax;
+                }
+
+                for ( size_t n = 0; n < count; n++ )
+                {
+                    wxLogMessage(_T("  selected %s %lu: %d"),
+                                 single, (unsigned long)n, sels[n]);
+                }
+            }
+            break;
+
+        default:
+            wxFAIL_MSG( _T("unknown wxGrid selection mode") );
+            break;
+    }
+}
+
 void GridFrame::OnSelectCell( wxGridEvent& ev )
 {
-    logBuf = _T("");
+    wxString logBuf;
     if ( ev.Selecting() )
         logBuf << _T("Selected ");
     else
@@ -832,6 +1002,11 @@ void GridFrame::OnSelectCell( wxGridEvent& ev )
            << _T(", ShiftDown: ")<< (ev.ShiftDown() ? 'T':'F')
            << _T(", AltDown: ")<< (ev.AltDown() ? 'T':'F')
            << _T(", MetaDown: ")<< (ev.MetaDown() ? 'T':'F') << _T(" )");
+
+    //Indicate whether this column was moved
+    if ( ((wxGrid *)ev.GetEventObject())->GetColPos( ev.GetCol() ) != ev.GetCol() )
+        logBuf << _T(" *** Column moved, current position: ") << ((wxGrid *)ev.GetEventObject())->GetColPos( ev.GetCol() );
+
     wxLogMessage( wxT("%s"), logBuf.c_str() );
 
     // you must call Skip() if you want the default processing
@@ -841,7 +1016,7 @@ void GridFrame::OnSelectCell( wxGridEvent& ev )
 
 void GridFrame::OnRangeSelected( wxGridRangeSelectEvent& ev )
 {
-    logBuf = _T("");
+    wxString logBuf;
     if ( ev.Selecting() )
         logBuf << _T("Selected ");
     else
@@ -861,12 +1036,19 @@ void GridFrame::OnRangeSelected( wxGridRangeSelectEvent& ev )
 
 void GridFrame::OnCellValueChanged( wxGridEvent& ev )
 {
-    logBuf = _T("");
-    logBuf  << _T("Value changed for cell at")
-            << _T(" row ") << ev.GetRow()
-            << _T(" col ") << ev.GetCol();
+    int row = ev.GetRow(),
+        col = ev.GetCol();
 
-    wxLogMessage( wxT("%s"), logBuf.c_str() );
+    wxLogMessage(_T("Value changed for cell at row %d, col %d: now \"%s\""),
+                 row, col, grid->GetCellValue(row, col).c_str());
+
+    ev.Skip();
+}
+
+void GridFrame::OnCellBeginDrag( wxGridEvent& ev )
+{
+    wxLogMessage(_T("Got request to drag cell at row %d, col %d"),
+                 ev.GetRow(), ev.GetCol());
 
     ev.Skip();
 }
@@ -908,8 +1090,7 @@ void GridFrame::OnEditorHidden( wxGridEvent& ev )
 void GridFrame::About(  wxCommandEvent& WXUNUSED(ev) )
 {
     (void)wxMessageBox( _T("\n\nwxGrid demo \n\n")
-                        _T("Michael Bedward \n")
-                        _T("mbedward@ozemail.com.au \n\n"),
+                        _T("Michael Bedward, Julian Smart, Vadim Zeitlin"),
                         _T("About"),
                         wxOK );
 }
@@ -1170,10 +1351,13 @@ wxString BugsGridTable::GetValue( int row, int col )
     switch ( col )
     {
         case Col_Id:
+            return wxString::Format(_T("%d"), gd.id);
+
         case Col_Priority:
+            return wxString::Format(_T("%d"), gd.prio);
+
         case Col_Opened:
-            wxFAIL_MSG(_T("unexpected column"));
-            break;
+            return gd.opened ? _T("1") : _T("0");
 
         case Col_Severity:
             return severities[gd.severity];
@@ -1231,7 +1415,10 @@ void BugsGridTable::SetValue( int row, int col, const wxString& value )
     }
 }
 
-bool BugsGridTable::CanGetValueAs( int WXUNUSED(row), int col, const wxString& typeName )
+bool
+BugsGridTable::CanGetValueAs(int WXUNUSED(row),
+                             int col,
+                             const wxString& typeName)
 {
     if ( typeName == wxGRID_VALUE_STRING )
     {
@@ -1323,17 +1510,12 @@ wxString BugsGridTable::GetColLabelValue( int col )
     return headers[col];
 }
 
-BugsGridTable::BugsGridTable()
-{
-}
-
 // ----------------------------------------------------------------------------
 // BugsGridFrame
 // ----------------------------------------------------------------------------
 
 BugsGridFrame::BugsGridFrame()
-             : wxFrame(NULL, wxID_ANY, _T("Bugs table"),
-                       wxDefaultPosition, wxSize(500, 300))
+             : wxFrame(NULL, wxID_ANY, _T("Bugs table"))
 {
     wxGrid *grid = new wxGrid(this, wxID_ANY, wxDefaultPosition);
     wxGridTableBase *table = new BugsGridTable();
@@ -1353,8 +1535,6 @@ BugsGridFrame::BugsGridFrame()
     grid->SetColAttr(Col_Priority, attrRangeEditor);
     grid->SetColAttr(Col_Severity, attrCombo);
 
-    grid->SetMargins(0, 0);
-
     grid->Fit();
     SetClientSize(grid->GetSize());
 }