gridctrl.cpp

用VC++和access数据库开发的账单管理系统

    case VK_TAB:    
        if (IsSHIFTpressed())
        {
            if (next.col > m_nFixedCols) 
                next.col--;
            else if (next.col == m_nFixedCols && next.row > m_nFixedRows) 
            {
                next.row--; 
                next.col = GetColumnCount() - 1; 
                bChangeLine = TRUE;
            }
            else
                CWnd::OnKeyDown(nChar, nRepCnt, nFlags);
        }
        else
        {
            if (next.col <(GetColumnCount() - 1)) 
                next.col++;
            else if (next.col == (GetColumnCount() - 1) && 
                next.row <(GetRowCount() - 1))
            {
                next.row++; 
                next.col = m_nFixedCols; 
                bChangeLine = TRUE;
            }
            else
                CWnd::OnKeyDown(nChar, nRepCnt, nFlags);
        } 
        break;
        
    case VK_DOWN:   
            // don't let user go to a hidden row
            bFoundVisible = FALSE;
            iOrig = next.row;
            next.row++;
            while( next.row < GetRowCount())
            {
                if( GetRowHeight( next.row) > 0)
                {
                    bFoundVisible = TRUE;
                    break;
                }
                next.row++;
            }
            if( !bFoundVisible)
                next.row = iOrig;

            break;
        
    case VK_UP:     
            // don't let user go to a hidden row
            bFoundVisible = FALSE;
            iOrig = next.row;
            next.row--;
            while( next.row >= m_nFixedRows)
            {
                if( GetRowHeight( next.row) > 0)
                {
                    bFoundVisible = TRUE;
                    break;
                }
                next.row--;
            }
            if( !bFoundVisible)
                next.row = iOrig;

            break;
        
    case VK_RIGHT:  
            // don't let user go to a hidden column
            bFoundVisible = FALSE;
            iOrig = next.col;
            next.col++;
            while( next.col < GetColumnCount())
            {
                if( GetColumnWidth( next.col) > 0)
                {
                    bFoundVisible = TRUE;
                    break;
                }
                next.col++;
            }
            if( !bFoundVisible)
                next.col = iOrig;

            break;
        
    case VK_LEFT:   
            // don't let user go to a hidden column
            bFoundVisible = FALSE;
            iOrig = next.col;
            next.col--;
            while( next.col >= m_nFixedCols)
            {
                if( GetColumnWidth( next.col) > 0)
                {
                    bFoundVisible = TRUE;
                    break;
                }
                next.col--;
            }
            if( !bFoundVisible)
                next.col = iOrig;

            break;
        
    case VK_NEXT:   
        {
            CCellID idOldTopLeft = GetTopleftNonFixedCell();
            SendMessage(WM_VSCROLL, SB_PAGEDOWN, 0);
            CCellID idNewTopLeft = GetTopleftNonFixedCell();

            int increment = idNewTopLeft.row - idOldTopLeft.row;
            if (increment)
            {
                next.row += increment;
                if (next.row >(GetRowCount() - 1))
                    next.row = GetRowCount() - 1;
            }
            else
                next.row = GetRowCount() - 1;
            break;
        }

    case VK_PRIOR:  
        {
            CCellID idOldTopLeft = GetTopleftNonFixedCell();
            SendMessage(WM_VSCROLL, SB_PAGEUP, 0);
            CCellID idNewTopLeft = GetTopleftNonFixedCell();
            
            int increment = idNewTopLeft.row - idOldTopLeft.row;
            if (increment) 
            {
                next.row += increment;
                if (next.row < m_nFixedRows) 
                    next.row = m_nFixedRows;
            }
            else
                next.row = m_nFixedRows;
            break;
        }
        
    case VK_HOME:   
            // Home and Ctrl-Home work more like Excel
            //  and don't let user go to a hidden cell
            if (IsCTRLpressed())
            {
                SendMessage(WM_VSCROLL, SB_TOP, 0);
                SendMessage(WM_HSCROLL, SB_LEFT, 0);
                next.row = m_nFixedRows;
                next.col = m_nFixedCols;
            }
            else
            {
                SendMessage(WM_HSCROLL, SB_LEFT, 0);
                next.col = m_nFixedCols;
            }
            // adjust column to avoid hidden columns and rows
            while( next.col < GetColumnCount() - 1)
            {
                if( GetColumnWidth( next.col) > 0)
                    break;
                next.col++;
            }
            while( next.row < GetRowCount() - 1)
            {
                if( GetRowHeight( next.row) > 0)
                    break;
                next.row++;
            }
            break;
        
    case VK_END:    
        // End and Ctrl-End work more like Excel
        //  and don't let user go to a hidden cell
        if (IsCTRLpressed())
        {
            SendMessage(WM_VSCROLL, SB_BOTTOM, 0);
            SendMessage(WM_HSCROLL, SB_RIGHT, 0);
            next.row = GetRowCount() - 1;
            next.col = GetColumnCount() - 1;
        }
        else
        {
            SendMessage(WM_HSCROLL, SB_RIGHT, 0);
            next.col = GetColumnCount() - 1;
        }
        // adjust column to avoid hidden columns and rows
        while( next.col > m_nFixedCols + 1)
        {
            if( GetColumnWidth( next.col) > 0)
                break;
            next.col--;
        }
        while( next.row > m_nFixedRows + 1)
        {
            if( GetRowHeight( next.row) > 0)
                break;
            next.row--;
        }

        break;
        
    case VK_F2:
        OnEditCell(m_idCurrentCell.row, m_idCurrentCell.col, CPoint( -1, -1), VK_LBUTTON);
        break;

    default:
        CWnd::OnKeyDown(nChar, nRepCnt, nFlags);
        return;
    }

    if (next != m_idCurrentCell)
    {
        // While moving with the Cursorkeys the current ROW/CELL will get selected
        // OR Selection will get expanded when SHIFT is pressed
        // Cut n paste from OnLButtonDown - Franco Bez
        // Added check for NULL mouse mode - Chris Maunder.
        if (m_MouseMode == MOUSE_NOTHING)
        {
            m_PrevSelectedCellMap.RemoveAll();
            m_MouseMode = m_bListMode? MOUSE_SELECT_ROW : MOUSE_SELECT_CELLS;
            if (!IsSHIFTpressed() || nChar == VK_TAB)
                m_SelectionStartCell = next;
            OnSelecting(next);
            m_MouseMode = MOUSE_NOTHING;
        }

        SetFocusCell(next);

        if (!IsCellVisible(next))
        {
            EnsureVisible(next); // Make sure cell is visible

            switch (nChar)
            {
            case VK_RIGHT:  
                SendMessage(WM_HSCROLL, SB_LINERIGHT, 0); 
                break;
                
            case VK_LEFT:   
                SendMessage(WM_HSCROLL, SB_LINELEFT, 0);  
                break;
                
            case VK_DOWN:   
                SendMessage(WM_VSCROLL, SB_LINEDOWN, 0);  
                break;
                
            case VK_UP:     
                SendMessage(WM_VSCROLL, SB_LINEUP, 0);    
                break;                
                
            case VK_TAB:    
                if (IsSHIFTpressed())
                {
                    if (bChangeLine) 
                    {
                        SendMessage(WM_VSCROLL, SB_LINEUP, 0);
                        SetScrollPos32(SB_HORZ, m_nHScrollMax);
                        break;
                    }
                    else 
                        SendMessage(WM_HSCROLL, SB_LINELEFT, 0);
                }
                else
                {
                    if (bChangeLine) 
                    {
                        SendMessage(WM_VSCROLL, SB_LINEDOWN, 0);
                        SetScrollPos32(SB_HORZ, 0);
                        break;
                    }
                    else 
                        SendMessage(WM_HSCROLL, SB_LINERIGHT, 0);
                }
                break;
            }
            Invalidate();
        }
    }
}

void CGridCtrl::OnSysKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags)
{
#ifdef GRIDCONTROL_USE_TITLETIPS
    m_TitleTip.Hide();  // hide any titletips
#endif

	CWnd::OnSysKeyDown(nChar, nRepCnt, nFlags);
}

// Instant editing of cells when keys are pressed
void CGridCtrl::OnChar(UINT nChar, UINT nRepCnt, UINT nFlags)
{
    // EFW - BUG FIX
    if (!IsCTRLpressed() && m_MouseMode == MOUSE_NOTHING && nChar != VK_ESCAPE)
    {
        if (!m_bHandleTabKey || (m_bHandleTabKey && nChar != VK_TAB))
            OnEditCell(m_idCurrentCell.row, m_idCurrentCell.col, CPoint( -1, -1), nChar);
    }

    CWnd::OnChar(nChar, nRepCnt, nFlags);
}

// Callback from any CInPlaceEdits that ended. This just calls OnEndEditCell,
// refreshes the edited cell and moves onto next cell if the return character
// from the edit says we should.
void CGridCtrl::OnEndInPlaceEdit(NMHDR* pNMHDR, LRESULT* pResult)
{
    GV_DISPINFO *pgvDispInfo = (GV_DISPINFO *)pNMHDR;
    GV_ITEM     *pgvItem = &pgvDispInfo->item;

    // In case OnEndInPlaceEdit called as window is being destroyed
    if (!IsWindow(GetSafeHwnd()))
        return;

    OnEndEditCell(pgvItem->row, pgvItem->col, pgvItem->strText);
    //InvalidateCellRect(CCellID(pgvItem->row, pgvItem->col));

    SendMessageToParent(pgvItem->row, pgvItem->col, GVN_ENDLABELEDIT);

    switch (pgvItem->lParam)
    {
        case VK_TAB:
        case VK_DOWN:
        case VK_UP:
        case VK_RIGHT:
        case VK_LEFT:
        case VK_NEXT:
        case VK_PRIOR:
        case VK_HOME:
        case VK_END:
            OnKeyDown(pgvItem->lParam, 0, 0);
            OnEditCell(m_idCurrentCell.row, m_idCurrentCell.col, CPoint( -1, -1), pgvItem->lParam);
    }

    *pResult = 0;
}

// Handle horz scrollbar notifications
void CGridCtrl::OnHScroll(UINT nSBCode, UINT /*nPos*/, CScrollBar* /*pScrollBar*/)
{
    EndEditing();

#ifndef GRIDCONTROL_NO_TITLETIPS
    m_TitleTip.Hide();  // hide any titletips
#endif

    int scrollPos = GetScrollPos32(SB_HORZ);

    CCellID idTopLeft = GetTopleftNonFixedCell();

    CRect rect;
    GetClientRect(rect);

    switch (nSBCode)
    {
    case SB_LINERIGHT:
        if (scrollPos < m_nHScrollMax)
        {
            // may have contiguous hidden columns.  Blow by them
            while (idTopLeft.col < (GetColumnCount()-1)
                    && GetColumnWidth( idTopLeft.col) < 1 )
            {
                idTopLeft.col++;
            }
            int xScroll = GetColumnWidth(idTopLeft.col);
            SetScrollPos32(SB_HORZ, scrollPos + xScroll);
            if (GetScrollPos32(SB_HORZ) == scrollPos)
                break;          // didn't work

            rect.left = GetFixedColumnWidth();
            //rect.left = GetFixedColumnWidth() + xScroll;
            //ScrollWindow(-xScroll, 0, rect);
            //rect.left = rect.right - xScroll;
            InvalidateRect(rect);
        }
        break;

    case SB_LINELEFT:
        if (scrollPos > 0 && idTopLeft.col > GetFixedColumnCount())
        {
            int iColToUse = idTopLeft.col-1;
            // may have contiguous hidden columns.  Blow by them
            while(  iColToUse > GetFixedColumnCount()
                    && GetColumnWidth( iColToUse) < 1 )
            {
                iColToUse--;
            }

            int xScroll = GetColumnWidth(iColToUse);
            SetScrollPos32(SB_HORZ, max(0, scrollPos - xScroll));
            rect.left = GetFixedColumnWidth();
            //ScrollWindow(xScroll, 0, rect);
            //rect.right = rect.left + xScroll;
            InvalidateRect(rect);
        }
        break;

    case SB_PAGERIGHT:
        if (scrollPos < m_nHScrollMax)
        {
            rect.left = GetFixedColumnWidth();
            int offset = rect.Width();
            int pos = min(m_nHScrollMax, scrollPos + offset);
            SetScrollPos32(SB_HORZ, pos);