gridctrl.cpp

這是一個可以計算學期成績的視窗程式 是利用讀入純文字檔案 來計算學期成績和平均

    {
        OnEditCell(m_idCurrentCell.row, m_idCurrentCell.col, CPoint( -1, -1), VK_LBUTTON);
    }
    else
    {
        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;

			// Notify parent that selection is changing - Arthur Westerman/Scot Brennecke 
            SendMessageToParent(next.row, next.col, GVN_SELCHANGING);
			OnSelecting(next);
			SendMessageToParent(next.row, next.col, GVN_SELCHANGED);

            m_MouseMode = MOUSE_NOTHING;
        }

        SetFocusCell(next);

        if (!IsCellVisible(next))
        {

            switch (nChar)
            {
            case VK_RIGHT:  
                SendMessage(WM_HSCROLL, SB_LINERIGHT, 0); 
				bHorzScrollAction = TRUE;
                break;
                
            case VK_LEFT:   
                SendMessage(WM_HSCROLL, SB_LINELEFT, 0);  
				bHorzScrollAction = TRUE;
                break;
                
            case VK_DOWN:   
                SendMessage(WM_VSCROLL, SB_LINEDOWN, 0);  
				bVertScrollAction = TRUE;
                break;
                
            case VK_UP:     
                SendMessage(WM_VSCROLL, SB_LINEUP, 0);    
				bVertScrollAction = TRUE;
                break;                
                
            case VK_TAB:    
                if (IsSHIFTpressed())
                {
                    if (bChangeLine) 
                    {
                        SendMessage(WM_VSCROLL, SB_LINEUP, 0);
						bVertScrollAction = TRUE;
                        SetScrollPos32(SB_HORZ, m_nHScrollMax);
                        break;
                    }
                    else 
					{
                        SendMessage(WM_HSCROLL, SB_LINELEFT, 0);
						bHorzScrollAction = TRUE;
					}
                }
                else
                {
                    if (bChangeLine) 
                    {
                        SendMessage(WM_VSCROLL, SB_LINEDOWN, 0);
						bVertScrollAction = TRUE;
                        SetScrollPos32(SB_HORZ, 0);
                        break;
                    }
                    else 
					{
						SendMessage(WM_HSCROLL, SB_LINERIGHT, 0);
						bHorzScrollAction = TRUE;
					}
                }
                break;
            }
            EnsureVisible(next); // Make sure cell is visible
            Invalidate();
        }
        EnsureVisible(next); // Make sure cell is visible

		if (bHorzScrollAction)
			SendMessage(WM_HSCROLL, SB_ENDSCROLL, 0);
		if (bVertScrollAction)
			SendMessage(WM_VSCROLL, SB_ENDSCROLL, 0);
    }
}

void CGridCtrl::OnKeyUp(UINT nChar, UINT nRepCnt, UINT nFlags)
{
    CWnd::OnKeyUp(nChar, nRepCnt, nFlags);
}

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);
}

// Added by KiteFly
LRESULT CGridCtrl::OnImeChar(WPARAM wCharCode, LPARAM)
{
    // EFW - BUG FIX
    if (!IsCTRLpressed() && m_MouseMode == MOUSE_NOTHING && wCharCode != VK_ESCAPE) 
        OnEditCell(m_idCurrentCell.row, m_idCurrentCell.col, CPoint( -1, -1), (UINT)wCharCode);
    return 0;
}

// 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));

    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((UINT)pgvItem->lParam, 0, 0);
        OnEditCell(m_idCurrentCell.row, m_idCurrentCell.col, CPoint( -1, -1), (UINT)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);
            rect.left = GetFixedColumnWidth();
            InvalidateRect(rect);
        }
        break;
        
    case SB_PAGELEFT:
        if (scrollPos > 0)
        {
            rect.left = GetFixedColumnWidth();
            int offset = -rect.Width();
            int pos = __max(0, scrollPos + offset);
            SetScrollPos32(SB_HORZ, pos);
            rect.left = GetFixedColumnWidth();
            InvalidateRect(rect);
        }
        break;
        
    case SB_THUMBPOSITION:
    case SB_THUMBTRACK:
        {
            SetScrollPos32(SB_HORZ, GetScrollPos32(SB_HORZ, TRUE));
            m_idTopLeftCell.row = -1;
            CCellID idNewTopLeft = GetTopleftNonFixedCell();
            if (idNewTopLeft != idTopLeft)
            {
                rect.left = GetFixedColumnWidth();
                InvalidateRect(rect);
            }
        }
        break;
        
    case SB_LEFT:
        if (scrollPos > 0)
        {
            SetScrollPos32(SB_HORZ, 0);
            Invalidate();
        }
        break;
        
    case SB_RIGHT:
        if (scrollPos < m_nHScrollMax)
        {
            SetScrollPos32(SB_HORZ, m_nHScrollMax);
            Invalidate();
        }
        break;
        
        
    default: 
        break;
    }
}

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

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

    // Get the scroll position ourselves to ensure we get a 32 bit value
    int scrollPos = GetScrollPos32(SB_VERT);

    CCellID idTopLeft = GetTopleftNonFixedCell();

    CRect rect;
    GetClientRect(rect);

    switch (nSBCode)
    {
    case SB_LINEDOWN:
        if (scrollPos < m_nVScrollMax)
        {
            // may have contiguous hidden rows.  Blow by them
            while(  idTopLeft.row < (GetRowCount()-1)
                    && GetRowHeight( idTopLeft.row) < 1 )
            {
                idTopLeft.row++;
            }

            int yScroll = GetRowHeight(idTopLeft.row);
            SetScrollPos32(SB_VERT, scrollPos + yScroll);
            if (GetScrollPos32(SB_VERT) == scrollPos)
                break;          // didn't work

            rect.top = GetFixedRowHeight();
            //rect.top = GetFixedRowHeight() + yScroll;
            //ScrollWindow(0, -yScroll, rect);
            //rect.top = rect.bottom - yScroll;
            InvalidateRect(rect);
        }
        break;
        
    case SB_LINEUP:
        if (scrollPos > 0 && idTopLeft.row > GetFixedRowCount())
        {
            int iRowToUse = idTopLeft.row-1;
            // may have contiguous hidden rows.  Blow by them
            while(  iRowToUse > GetFixedRowCount()
                    && GetRowHeight( iRowToUse) < 1 )
            {
                iRowToUse--;
            }

            int yScroll = GetRowHeight( iRowToUse);
            SetScrollPos32(SB_VERT, __max(0, scrollPos - yScroll));
            rect.top = GetFixedRowHeight();
            //ScrollWindow(0, yScroll, rect);
            //rect.bottom = rect.top + yScroll;
            InvalidateRect(rect);
        }
        break;
        
    case SB_PAGEDOWN:
        if (scrollPos < m_nVScrollMax)
        {
            rect.top = GetFixedRowHeight();
            scrollPos = min(m_nVScrollMax, scrollPos + rect.Height());
            SetScrollPos32(SB_VERT, scrollPos);
            rect.top = GetFixedRowHeight();
            InvalidateRect(rect);
        }
        break;
        
    case SB_PAGEUP:
        if (scrollPos > 0)
        {
            rect.top = GetFixedRowHeight();
            int offset = -rect.Height();
            int pos = __max(0, scrollPos + offset);
            SetScrollPos32(SB_VERT, pos);
            rect.top = GetFixedRowHeight();
            InvalidateRect(rect);
        }
        break;
        
    case SB_THUMBPOSITION:
    case SB_THUMBTRACK:
        {
            SetScrollPos32(SB_VERT, GetScrollPos32(SB_VERT, TRUE));
            m_idTopLeftCell.row = -1;
            CCellID idNewTopLeft = GetTopleftNonFixedCell();
            if (idNewTopLeft != idTopLeft)
            {
                rect.top = GetFixedRowHeight();
                InvalidateRect(rect);
            }
        }
        break;
        
    case SB_TOP:
        if (scrollPos > 0)
        {
            SetScrollPos32(SB_VERT, 0);
            Invalidate();