推荐一个支持类似CListCtrl支持自动换行的控件

/* * CMultilineList custom control * Copyright (C) 2006 Dave Calkins (coder1024@gmail.com) * * This library is free software; you can redistribute it and/or modify it under * the terms of the GNU Lesser General Public License as published by the Free * Software Foundation; either version 2.1 of the License, or (at your option) * any later version. * * This library is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more * details. * * You should have received a copy of the GNU Lesser General Public License * along with this library; if not, write to the * * Free Software Foundation, Inc. * 59 Temple Place, Suite 330 * Boston, MA 02111-1307 USA * */ #include "stdafx.h" #include "MultilineList.h" using namespace std; // Win32 class name used for the window; if you're using the VS dialog editor you need // to put this string in the Class property of the custom control #define MULTILINELIST_CLASSNAME _T("CMultilineList") // width of the internal borders used between cells/cols/rows #define GRID_WIDTH 1 // spacing inside cells between the text and the cell borders #define INNER_PADDING 2 // control IDs for child controls #define CHILD_ID_HEADERCTRL 101 #define CHILD_ID_SCROLLBAR 102 #define CHILD_ID_SCROLLBARHORZ 103 // header control height is set to be the font height plus the below #define HEADERCTRL_HEIGHT_EXTRA 6 // # pixels to scroll horizontally when using arrows #define HORZSCROLL_PIXELS 25 IMPLEMENT_DYNAMIC(CMultilineList, CWnd) BEGIN_MESSAGE_MAP(CMultilineList, CWnd) ON_WM_ERASEBKGND() ON_WM_PAINT() ON_WM_SIZE() ON_WM_VSCROLL() ON_WM_MOUSEWHEEL() ON_WM_HSCROLL() ON_WM_LBUTTONDOWN() END_MESSAGE_MAP() //////////////////////////////////////////////////////////////////////////////// // PUBLIC //////////////////////////////////////////////////////////////////////////////// CMultilineList::CMultilineList() : m_nCols(0), m_nRows(0), m_viewYPos(0), m_viewXPos(0), m_curSelRow(-1) { RegisterWindowClass(); } CMultilineList::~CMultilineList() { } BOOL CMultilineList::Create(CWnd* pParentWnd, const RECT& rect, UINT nID, DWORD dwStyle /*=WS_VISIBLE*/) { return CWnd::Create(MULTILINELIST_CLASSNAME, _T(""), dwStyle, rect, pParentWnd, nID); } void CMultilineList::SetSize(int nCols, int nRows) { ASSERT(nCols >= 0); ASSERT(nRows >= 0); // if no change, do nothing if ((nCols == m_nCols) && (nRows == m_nRows)) { return; } // if the # cols or # rows is being reduced if ((nCols < m_nCols) || (nRows < m_nRows)) { // walk through all cells map<pair<int,int>,Cell>::iterator i; for (i = m_cells.begin(); i != m_cells.end(); ) { int col = i->first.first; int row = i->first.second; // remove any cells outside the new dimensions if ((col >= nCols) || (row >= nRows)) { i = m_cells.erase(i); } else { ++i; } } } // if the # cols is being reduced if (nCols < m_nCols) { // walk through all columns map<int,Column>::iterator j; for (j = m_columns.begin(); j != m_columns.end(); ) { int col = j->first; // remove any columns outside the new dimensions if (col >= nCols) { j = m_columns.erase(j); } else { ++j; } } // invalidate all row heights m_rowHeights.clear(); } // if the # rows is being reduced but # cols is not being reduced // (since if the # cols was reduced all row heights would have been // invalidated anyway) if ((nRows < m_nRows) && (nCols >= m_nCols)) { // walk through the calculated row heights map<int,int>::iterator k; for (k = m_rowHeights.begin(); k != m_rowHeights.end(); ) { int row = k->first; // remove (invalidate) calculated row heights corresponding to rows which are outside the new dimensions if (row >= nRows) { k = m_rowHeights.erase(k); } else { ++k; } } } // store new size m_nCols = nCols; m_nRows = nRows; // update Invalidate(FALSE); CalculateRowHeights(); UpdateChildControls(); } void CMultilineList::GetSize(int & nCols, int & nRows) { // return current size of the list nCols = m_nCols; nRows = m_nRows; } void CMultilineList::SetColHeading(int col, LPCTSTR heading) { ASSERT(col >= 0); ASSERT(col < m_nCols); ASSERT(heading != NULL); // use existing column object (if there is one) or a new one Column column; map<int,Column>::iterator i = m_columns.find(col); if (i != m_columns.end()) { column = i->second; // abort if no change if (column.m_heading == CString(heading)) return; } // set column heading column.m_heading = heading; // store the column object back in the map m_columns[col] = column; // update Invalidate(FALSE); UpdateChildControls(); } void CMultilineList::SetColWidth(int col, int width) { ASSERT(col >= 0); ASSERT(col < m_nCols); ASSERT(width >= 0); // use existing column object (if there is one) or use default Column column; map<int,Column>::iterator i = m_columns.find(col); if (i != m_columns.end()) { column = i->second; // abort if no change if (column.m_width == width) return; } // set column width column.m_width = width; // store the column object back in the map m_columns[col] = column; // invalidate all row heights m_rowHeights.clear(); // update Invalidate(FALSE); CalculateRowHeights(); UpdateChildControls(); } void CMultilineList::SetCellText(int col, int row, LPCTSTR text) { ASSERT(col >= 0); ASSERT(row >= 0); ASSERT(col < m_nCols); ASSERT(row < m_nRows); ASSERT(text != NULL); // use existing cell object (if there is one) or a new one Cell cell; pair<int,int> coord = make_pair(col,row); map<pair<int,int>,Cell>::iterator i = m_cells.find(coord); if (i != m_cells.end()) { cell = i->second; // abort if no change if (cell.m_text == CString(text)) return; } // set cell text cell.m_text = text; // store the cell object back in the map m_cells[coord] = cell; // invalidate this row's height m_rowHeights.erase(row); // update Invalidate(FALSE); CalculateRowHeights(); UpdateChildControls(); } CString CMultilineList::GetCellText(int col, int row) { ASSERT(col >= 0); ASSERT(row >= 0); ASSERT(col < m_nCols); ASSERT(row < m_nRows); CString result; // use existing cell object (if there is one) or use default Cell cell; map<pair<int,int>,Cell>::iterator i = m_cells.find(make_pair(col,row)); if (i != m_cells.end()) { cell = i->second; } // return the cell text result = cell.m_text; return result; } void CMultilineList::SetSelRow(int row) { ASSERT(row >= 0); ASSERT(row < m_nRows); // force selected row to the specified value m_curSelRow = row; // update Invalidate(FALSE); UpdateChildControls(); } int CMultilineList::GetSelRow() { // return currently selected row return m_curSelRow; } int CMultilineList::GetRowFromPoint