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

    CWnd::OnSettingChange(uFlags, lpszSection);

    if (GetDefaultCell(FALSE, FALSE)->GetTextClr() == m_crWindowText)                   // Still using system colours
        GetDefaultCell(FALSE, FALSE)->SetTextClr(::GetSysColor(COLOR_WINDOWTEXT));      // set to new system colour
    if (GetDefaultCell(FALSE, FALSE)->GetBackClr() == m_crWindowColour)
        GetDefaultCell(FALSE, FALSE)->SetBackClr(::GetSysColor(COLOR_WINDOW));

    if (GetDefaultCell(TRUE, FALSE)->GetTextClr() == m_crWindowText)                   // Still using system colours
        GetDefaultCell(TRUE, FALSE)->SetTextClr(::GetSysColor(COLOR_WINDOWTEXT));      // set to new system colour
    if (GetDefaultCell(TRUE, FALSE)->GetBackClr() == m_crWindowColour)
        GetDefaultCell(TRUE, FALSE)->SetBackClr(::GetSysColor(COLOR_WINDOW));

    if (GetDefaultCell(FALSE, TRUE)->GetTextClr() == m_crWindowText)                   // Still using system colours
        GetDefaultCell(FALSE, TRUE)->SetTextClr(::GetSysColor(COLOR_WINDOWTEXT));      // set to new system colour
    if (GetDefaultCell(FALSE, TRUE)->GetBackClr() == m_crWindowColour)
        GetDefaultCell(FALSE, TRUE)->SetBackClr(::GetSysColor(COLOR_WINDOW));

    if (GetDefaultCell(TRUE, TRUE)->GetTextClr() == m_crWindowText)                   // Still using system colours
        GetDefaultCell(TRUE, TRUE)->SetTextClr(::GetSysColor(COLOR_WINDOWTEXT));      // set to new system colour
    if (GetDefaultCell(TRUE, TRUE)->GetBackClr() == m_crWindowColour)
        GetDefaultCell(TRUE, TRUE)->SetBackClr(::GetSysColor(COLOR_WINDOW));

    if (GetGridBkColor() == m_crShadow)
        SetGridBkColor(::GetSysColor(COLOR_3DSHADOW));

    m_crWindowText   = ::GetSysColor(COLOR_WINDOWTEXT);
    m_crWindowColour = ::GetSysColor(COLOR_WINDOW);
    m_cr3DFace       = ::GetSysColor(COLOR_3DFACE);
    m_crShadow       = ::GetSysColor(COLOR_3DSHADOW);

    m_nRowsPerWheelNotch = GetMouseScrollLines(); // Get the number of lines
}
#endif

// For drag-selection. Scrolls hidden cells into view
// TODO: decrease timer interval over time to speed up selection over time
void CGridCtrl::OnTimer(UINT nIDEvent)
{
    ASSERT(nIDEvent == WM_LBUTTONDOWN);
    if (nIDEvent != WM_LBUTTONDOWN)
        return;

    CPoint pt, origPt;

#ifdef _WIN32_WCE
    if (m_MouseMode == MOUSE_NOTHING)
        return;
    origPt = GetMessagePos();
#else
    if (!GetCursorPos(&origPt))
        return;
#endif

    ScreenToClient(&origPt);

    CRect rect;
    GetClientRect(rect);

    int nFixedRowHeight = GetFixedRowHeight();
    int nFixedColWidth = GetFixedColumnWidth();

    pt = origPt;
    if (pt.y > rect.bottom)
    {
        //SendMessage(WM_VSCROLL, SB_LINEDOWN, 0);
        SendMessage(WM_KEYDOWN, VK_DOWN, 0);

        if (pt.x < rect.left)
            pt.x = rect.left;
        if (pt.x > rect.right)
            pt.x = rect.right;
        pt.y = rect.bottom;
        OnSelecting(GetCellFromPt(pt));
    }
    else if (pt.y < nFixedRowHeight)
    {
        //SendMessage(WM_VSCROLL, SB_LINEUP, 0);
        SendMessage(WM_KEYDOWN, VK_UP, 0);

        if (pt.x < rect.left)
            pt.x = rect.left;
        if (pt.x > rect.right)
            pt.x = rect.right;
        pt.y = nFixedRowHeight + 1;
        OnSelecting(GetCellFromPt(pt));
    }

    pt = origPt;
    if (pt.x > rect.right)
    {
        // SendMessage(WM_HSCROLL, SB_LINERIGHT, 0);
        SendMessage(WM_KEYDOWN, VK_RIGHT, 0);

        if (pt.y < rect.top)
            pt.y = rect.top;
        if (pt.y > rect.bottom)
            pt.y = rect.bottom;
        pt.x = rect.right;
        OnSelecting(GetCellFromPt(pt));
    }
    else if (pt.x < nFixedColWidth)
    {
        //SendMessage(WM_HSCROLL, SB_LINELEFT, 0);
        SendMessage(WM_KEYDOWN, VK_LEFT, 0);

        if (pt.y < rect.top)
            pt.y = rect.top;
        if (pt.y > rect.bottom)
            pt.y = rect.bottom;
        pt.x = nFixedColWidth + 1;
        OnSelecting(GetCellFromPt(pt));
    }
}

// move about with keyboard
void CGridCtrl::OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags)
{
    if (!IsValid(m_idCurrentCell))
    {
        CWnd::OnKeyDown(nChar, nRepCnt, nFlags);
        return;
    }
    CCellID next = m_idCurrentCell;
    BOOL bChangeLine = FALSE;
	BOOL bHorzScrollAction = FALSE;
	BOOL bVertScrollAction = FALSE;

    if (IsCTRLpressed())
    {
        switch (nChar)
        {
        case 'A':
            OnEditSelectAll();
            break;
        case 'k':		// This is ctrl+ on french keyboard, may need to be better processed for other locales
            AutoSizeColumns();
			Invalidate();
            break;
#ifndef GRIDCONTROL_NO_CLIPBOARD
        case 'X':
            OnEditCut();
            break;
        case VK_INSERT:
        case 'C':
            OnEditCopy();
            break;
        case 'V':
            OnEditPaste();
            break;
#endif
        }
    }

#ifndef GRIDCONTROL_NO_CLIPBOARD
    if (IsSHIFTpressed() &&(nChar == VK_INSERT))
        OnEditPaste();
#endif

    BOOL bFoundVisible;
    int iOrig;

    if (nChar == VK_DELETE)
    {
		CutSelectedText();
    }
    else if (nChar == 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;
    }
    else if (nChar == 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;
    }
    else if (nChar == VK_RIGHT || (nChar == VK_TAB && !IsSHIFTpressed()) )
    {
		if( (nChar == VK_TAB) &&  m_QuitFocusOnTab )
		{
			CDialog* p= (CDialog*) GetParent();
			if(p) p->NextDlgCtrl();
			return;

		}
        // don't let user go to a hidden column
        bFoundVisible = FALSE;
        iOrig = next.col;
        next.col++;

        if (nChar == VK_TAB)
        {
			// If we're at the end of a row, go down a row till we find a non-hidden row
            if (next.col == (GetColumnCount()) && next.row < (GetRowCount() - 1))
            {
				next.row++;
				while( next.row < GetRowCount())
				{
					if( GetRowHeight(next.row) > 0)
					{
						bFoundVisible = TRUE;
						break;
					}
					next.row++; 
				}

                next.col = m_nFixedCols;	// Place focus on first non-fixed column
                bChangeLine = TRUE;
            }
            else
                CWnd::OnKeyDown(nChar, nRepCnt, nFlags);
        }

		// We're on a non-hidden row, so look across for the next non-hidden column
        while( next.col < GetColumnCount())
        {
            if( GetColumnWidth( next.col) > 0)
            {
                bFoundVisible = TRUE;
                break;
            }
            next.col++;
        }

		// If nothing worked then don't bother
        if( !bFoundVisible)
            next.col = iOrig;
    }
    else if (nChar == VK_LEFT || (nChar == VK_TAB && IsSHIFTpressed()) )
    {
        // don't let user go to a hidden column
        bFoundVisible = FALSE;
        iOrig = next.col;
        next.col--;

        if (nChar == VK_TAB)
        {
            if (next.col == (GetFixedColumnCount()-1) && next.row > GetFixedRowCount())
            {
                next.row--;
				while( next.row > GetFixedRowCount())
				{
					if( GetRowHeight(next.row) > 0)
					{
						bFoundVisible = TRUE;
						break;
					}
					next.row--; 
				}

                next.col = GetColumnCount() - 1; 
                bChangeLine = TRUE;
            }
            else
                CWnd::OnKeyDown(nChar, nRepCnt, nFlags);
        }

        while( next.col >= m_nFixedCols)
        {
            if( GetColumnWidth( next.col) > 0)
            {
                bFoundVisible = TRUE;
                break;
            }
            next.col--;
        }
        if( !bFoundVisible)
            next.col = iOrig;
    }
    else if (nChar == VK_NEXT)
    {
        CCellID idOldTopLeft = GetTopleftNonFixedCell();
        SendMessage(WM_VSCROLL, SB_PAGEDOWN, 0);
		bVertScrollAction = TRUE;
        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;
    }
    else if (nChar == VK_PRIOR)
    {
        CCellID idOldTopLeft = GetTopleftNonFixedCell();
        SendMessage(WM_VSCROLL, SB_PAGEUP, 0);
		bVertScrollAction = TRUE;
        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;
    }
    else if (nChar == 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);
			bVertScrollAction = TRUE;
			bHorzScrollAction = TRUE;
            next.row = m_nFixedRows;
            next.col = m_nFixedCols;
        }
        else
        {
            SendMessage(WM_HSCROLL, SB_LEFT, 0);
 			bHorzScrollAction = TRUE;
            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++;
        }
    }
    else if (nChar == 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);
			bHorzScrollAction = TRUE;
			bVertScrollAction = TRUE;
            next.row = GetRowCount() - 1;
            next.col = GetColumnCount() - 1;
        }
        else
        {
            SendMessage(WM_HSCROLL, SB_RIGHT, 0);
			bHorzScrollAction = TRUE;
            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--;
        }
    }
    else if (nChar == VK_F2)