1.合并后文本显示的位置不变

1.1界面展示

下图中第2行是合并后的效果

1.2 AutoScanTable.h

#pragma onceclass AutoScanTable : public CListCtrl
{
public:enum ROWTYPE{AUTOSCAN_ROW_NORMAL = 0,AUTOSCAN_ROW_DTC = 1};private:unsigned int m_uRowHeight;CRect m_listRect;public:AutoScanTable();virtual ~AutoScanTable();    protected:virtual void DoDataExchange(CDataExchange* pDX);DECLARE_MESSAGE_MAP()
public:void SetRowHeigt(int nHeight);virtual void DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct);afx_msg void MeasureItem(LPMEASUREITEMSTRUCT lpMeasureItemStruct);afx_msg void OnMeasureItem(int nIDCtl, LPMEASUREITEMSTRUCT lpMeasureItemStruct);        afx_msg void OnSize(UINT nType, int cx, int cy);
};

1.3 AutoScanTable.cpp

#include "stdafx.h"
#include "MainDisplay.h"
#include "AutoScanTable.h"AutoScanTable::AutoScanTable()
{m_uRowHeight = 60;
}AutoScanTable::~AutoScanTable()
{
}void AutoScanTable::DoDataExchange(CDataExchange* pDX)
{CListCtrl::DoDataExchange(pDX);
}BEGIN_MESSAGE_MAP(AutoScanTable, CListCtrl)ON_WM_MEASUREITEM_REFLECT()ON_WM_MEASUREITEM()ON_WM_DRAWITEM()ON_WM_SIZE()
END_MESSAGE_MAP()void AutoScanTable::SetRowHeigt(int nHeight)
{m_uRowHeight = nHeight;CRect rcWin;GetWindowRect(&rcWin);WINDOWPOS wp;wp.hwnd = m_hWnd;wp.cx = rcWin.Width();wp.cy = rcWin.Height();wp.flags = SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOOWNERZORDER | SWP_NOZORDER;SendMessage(WM_WINDOWPOSCHANGED, 0, (LPARAM)&wp);
}void AutoScanTable::OnMeasureItem(int nIDCtl, LPMEASUREITEMSTRUCT lpMeasureItemStruct)
{CListCtrl::OnMeasureItem(nIDCtl, lpMeasureItemStruct);
}void AutoScanTable::MeasureItem(LPMEASUREITEMSTRUCT lpMeasureItemStruct)
{lpMeasureItemStruct->itemHeight = m_uRowHeight;
}void AutoScanTable::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct)
{CDC* pDC = CDC::FromHandle(lpDrawItemStruct->hDC);LVITEM lvi = { 0 };lvi.mask = LVIF_STATE;//|LVIF_IMAGE; lvi.stateMask = LVIS_FOCUSED | LVIS_SELECTED;lvi.iItem = lpDrawItemStruct->itemID;BOOL bGet = GetItem(&lvi);BOOL bSelect = ((lvi.state & LVIS_DROPHILITED) || ((lvi.state & LVIS_SELECTED)&& ((GetFocus() == this) || (GetStyle() & LVS_SHOWSELALWAYS))));//画文本背景 CRect bgRect = lpDrawItemStruct->rcItem;if (bSelect)//设置选中颜色{pDC->SetTextColor(RGB(255, 255, 255));//白色文本pDC->FillRect(bgRect, &CBrush(RGB(88, 88, 88)));//深灰色背景}else{int iRow = lvi.iItem;if (iRow % 2 == 0)//设置偶数行文字颜色和背景颜色{pDC->SetTextColor(RGB(0, 0, 0));//黑色文本pDC->FillRect(bgRect, &CBrush(RGB(128, 128, 128))); //灰色背景}else//设置奇数行文字颜色和背景颜色{pDC->SetTextColor(RGB(0, 0, 0));//黑色文本pDC->FillRect(bgRect, &CBrush(RGB(227, 227, 227))); //白色背景}}LVITEM itemParam;itemParam.iItem = lpDrawItemStruct->itemID;itemParam.iSubItem = 0;GetItem(&itemParam);//绘制文本if (lpDrawItemStruct->itemAction & ODA_DRAWENTIRE){//得到列数//int nCollumn = GetHeaderCtrl()->GetItemCount();//循环处理CString szText;for (int i = 0; i < GetHeaderCtrl()->GetItemCount(); i++){CRect rcItem;if (!GetSubItemRect(lpDrawItemStruct->itemID, i, LVIR_LABEL, rcItem)){continue;}if ((0 != i) && (AUTOSCAN_ROW_NORMAL == itemParam.lParam)){CPen pen(PS_SOLID, 1, RGB(255, 255, 255));pDC->SelectObject(&pen);CBrush *pBrush = CBrush::FromHandle((HBRUSH)GetStockObject(NULL_BRUSH));pDC->SelectObject(pBrush);pDC->Rectangle(rcItem);}szText = GetItemText(lpDrawItemStruct->itemID, i);rcItem.left += 5; rcItem.right -= 1;pDC->DrawText(szText, lstrlen(szText), &rcItem,DT_LEFT | DT_VCENTER | DT_NOPREFIX | DT_SINGLELINE);}}
}void AutoScanTable::OnSize(UINT nType, int cx, int cy)
{CListCtrl::OnSize(nType, cx, cy);ShowScrollBar(SB_HORZ, FALSE);//隐藏水平滚动条
}

1.4 创建表格并添加内容

m_listCtrl.Create(WS_BORDER | WS_VISIBLE | LVS_REPORT | LVS_SHOWSELALWAYS| LVS_NOCOLUMNHEADER | LVS_OWNERDRAWFIXED, rect, this, IDC_LISTCTRL);//m_listCtrl.SetExtendedStyle(LVS_EX_FULLROWSELECT | LVS_EX_GRIDLINES | WS_VSCROLL);m_listCtrl.SetExtendedStyle(LVS_EX_FULLROWSELECT | WS_VSCROLL);m_listCtrl.SetBkColor(RGB(227, 227, 227));m_listCtrl.MoveWindow(GetClientRectEx());m_listCtrl.InsertColumn(0, _T(""), LVCFMT_LEFT, 0);//第0列无法居中显示，一般将其隐藏m_listCtrl.InsertColumn(1, _T("No"), LVCFMT_LEFT, 30); // 插入第2列的列名m_listCtrl.InsertColumn(2, _T("Name"), LVCFMT_LEFT, 450); // 插入第3列的列名m_listCtrl.InsertColumn(3, _T("State"), LVCFMT_LEFT, 70); // 插入第4列的列名m_listCtrl.InsertColumn(4, _T("Operation"), LVCFMT_LEFT, 90); // 插入第4列的列名m_listCtrl.SetColumnWidth(4, LVSCW_AUTOSIZE_USEHEADER);CString strNo;CString strName;CString strState;CString strOpt;for (int i = 0; i <= 2; i++) {strNo.Format(_T("%d"), i);strName.Format(_T("Ecu%d"), i);strState.Format(_T("未扫描"), 20 + i);strOpt = _T("进入系统");LVITEM *item = new LVITEM;if (1 == i){item->lParam = AutoScanTable::AUTOSCAN_ROW_DTC;} else{item->lParam = AutoScanTable::AUTOSCAN_ROW_NORMAL;}item->iItem = i;item->iSubItem = 0;item->mask = LVIF_PARAM;m_listCtrl.InsertItem(item);//m_listCtrl.InsertItem(i, _T("")); // 插入行m_listCtrl.SetItemText(i, 1, strNo);m_listCtrl.SetItemText(i, 2, strName);m_listCtrl.SetItemText(i, 3, strState);m_listCtrl.SetItemText(i, 4, strOpt);}

1.5 核心代码说明

创建表格时：

m_scanList.Create(WS_BORDER | WS_VISIBLE | LVS_REPORT | LVS_NOCOLUMNHEADER | LVS_OWNERDRAWFIXED, rect, this, IDC_LISTCTRL);//m_scanList.SetExtendedStyle(LVS_EX_FULLROWSELECT | LVS_EX_GRIDLINES | WS_VSCROLL);//设置表格扩展样式时，千万不要加LVS_EX_GRIDLINES，此参数会给表格自动加上白色的网格线，不容易去掉
m_scanList.SetExtendedStyle(LVS_EX_FULLROWSELECT | WS_VSCROLL);

往表格中插入行时：

LVITEM *item = new LVITEM;
if (1 == i)
{//因为只会合并部分单元格，所以哪些单元格是需要合并的，我们可以在这里指定一个标识来区分item->lParam = AutoScanTable::AUTOSCAN_ROW_DTC;
}
else
{item->lParam = AutoScanTable::AUTOSCAN_ROW_NORMAL;
}item->iItem = i;//行号
item->iSubItem = 0;//列号
item->mask = LVIF_PARAM;//这里必须用LVIF_PARAM，以使得能传递item->lParam的值m_listCtrl.InsertItem(item);//插入一行

绘制单元格时：

//获取单元格信息，以读取itemParam.lParam
LVITEM itemParam;
itemParam.iItem = lpDrawItemStruct->itemID;
itemParam.iSubItem = 0;
GetItem(&itemParam);...//在插入表格的行时，设置了itemParam.lParam，这里通过此值来判断是否为待合并的单元格
//不需要合并的单元格不会执行下面的代码
if ((0 != i) && (AUTOSCAN_ROW_NORMAL == itemParam.lParam))
{CPen pen(PS_SOLID, 1, RGB(255, 255, 255));pDC->SelectObject(&pen);CBrush *pBrush = CBrush::FromHandle((HBRUSH)GetStockObject(NULL_BRUSH));pDC->SelectObject(pBrush);pDC->Rectangle(rcItem);//绘制一个白色边框的矩形
}

2.合并后文本居中显示

2.1 界面展示

下图中第2行是合并后的效果

2.2 AutoScanTable.cpp

要实现上面的效果，只需要拷贝本文“1.3章节”的代码，然后修改一下下面这个函数：

void AutoScanTable::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct)

void AutoScanTable::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct)
{CDC* pDC = CDC::FromHandle(lpDrawItemStruct->hDC);LVITEM lvi = { 0 };lvi.mask = LVIF_STATE;//|LVIF_IMAGE; lvi.stateMask = LVIS_FOCUSED | LVIS_SELECTED;lvi.iItem = lpDrawItemStruct->itemID;BOOL bGet = GetItem(&lvi);BOOL bSelect = ((lvi.state & LVIS_DROPHILITED) || ((lvi.state & LVIS_SELECTED)&& ((GetFocus() == this) || (GetStyle() & LVS_SHOWSELALWAYS))));//画文本背景 CRect bgRect = lpDrawItemStruct->rcItem;if (bSelect)//设置选中颜色{pDC->SetTextColor(RGB(255, 255, 255));//白色文本pDC->FillRect(bgRect, &CBrush(RGB(88, 88, 88)));//深灰色背景}else{int iRow = lvi.iItem;if (iRow % 2 == 0)//设置偶数行文字颜色和背景颜色{pDC->SetTextColor(RGB(0, 0, 0));//黑色文本pDC->FillRect(bgRect, &CBrush(RGB(128, 128, 128))); //灰色背景}else//设置奇数行文字颜色和背景颜色{pDC->SetTextColor(RGB(0, 0, 0));//黑色文本pDC->FillRect(bgRect, &CBrush(RGB(227, 227, 227))); //白色背景}}LVITEM itemParam;itemParam.iItem = lpDrawItemStruct->itemID;itemParam.iSubItem = 0;GetItem(&itemParam);//绘制文本if (lpDrawItemStruct->itemAction & ODA_DRAWENTIRE){//得到列数//int nCollumn = GetHeaderCtrl()->GetItemCount();//循环处理CString szText;CRect totalRect;for (int i = 0; i < GetHeaderCtrl()->GetItemCount(); i++){CRect rcItem;if (!GetSubItemRect(lpDrawItemStruct->itemID, i, LVIR_LABEL, rcItem)){continue;}//记录单元格位置if (0 == i){totalRect = rcItem;} else{totalRect.right = rcItem.right;totalRect.bottom = rcItem.bottom;}if ((0 != i) && (AUTOSCAN_ROW_NORMAL == itemParam.lParam)){CPen pen(PS_SOLID, 1, RGB(255, 255, 255));pDC->SelectObject(&pen);CBrush *pBrush = CBrush::FromHandle((HBRUSH)GetStockObject(NULL_BRUSH));pDC->SelectObject(pBrush);pDC->Rectangle(rcItem);szText = GetItemText(lpDrawItemStruct->itemID, i);rcItem.left += 5; rcItem.right -= 1;pDC->DrawText(szText, lstrlen(szText), &rcItem,DT_LEFT | DT_VCENTER | DT_NOPREFIX | DT_SINGLELINE);}//记录每个单元格的文本szText += GetItemText(lpDrawItemStruct->itemID, i);  szText += "--";}//将合并后的文本一次性显示出来totalRect.left += 230; totalRect.right -= 230;pDC->DrawText(szText, lstrlen(szText), &totalRect,DT_LEFT | DT_VCENTER | DT_NOPREFIX | DT_SINGLELINE);}
}

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CListCtrl实现合并单元格的效果

1.合并后文本显示的位置不变

1.1界面展示

1.2 AutoScanTable.h

1.3 AutoScanTable.cpp

1.4 创建表格并添加内容

1.5 核心代码说明

2.合并后文本居中显示

2.1 界面展示

2.2 AutoScanTable.cpp

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