MFC 自定义CListCtrl

大家好，又见面了，我是你们的朋友全栈君。

本文的代码也是根据网上现有的改编而来

首先是.h

#pragma once
#include "HeaderCtrlCl.h"
// CListCtrlCl

class CListCtrlCl : public CListCtrl
{
    DECLARE_DYNAMIC(CListCtrlCl)

public:
    CHeaderCtrlCl m_Header;
    CListCtrlCl();
    virtual ~CListCtrlCl();

protected:
    DECLARE_MESSAGE_MAP()
    virtual void PreSubclassWindow();
public:
    virtual void DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct);
public:
    afx_msg void OnMeasureItem(int nIDCtl, LPMEASUREITEMSTRUCT lpMeasureItemStruct);
    void MeasureItem(LPMEASUREITEMSTRUCT lpMeasureItemStruct);
    afx_msg void OnLButtonDown(UINT nFlags, CPoint point){}
    afx_msg void OnRButtonDown(UINT nFlags, CPoint point){}
public:
    // 行高
    int m_nRowHeight;
    int InsertColumn(int nCol, LPCTSTR lpszColumnHeading,
        int nFormat = LVCFMT_LEFT, int nWidth = -1, int nSubItem = -1);
public:
    // Gradient - 渐变系数，立体背景用,不用渐变设为0
    void SetHeaderBKColor(int R, int G, int B, int Gradient);
public:
    // 设置表头高度
    void SetHeaderHeight(float Height);
    CPtrList m_ptrListCol;  //保存列颜色
    CPtrList m_ptrListItem; //保存Item颜色表
    CPtrList m_colTextColor; //保存列字体颜色
    CPtrList m_ItemTextColor; //保存单元格字体颜色
    CPtrList m_ItemFontSize;//保存单元格字体

    bool FindColColor(int col ,COLORREF &color); //查找列颜色
    bool FindItemColor(int col,int row,COLORREF &color);
    bool FindColTextColor(int col,COLORREF &color); //查找列字体颜色
    bool FindItemTextColor(int col,int row,COLORREF &color);
    bool FindItemFontSize(int col,int row,int &height,int &width);//查找字体大小

    void SetColColor(int col,COLORREF color);  //设置列颜色
    void SetItemColor(int col,int row,COLORREF color); //设置Item颜色
    void SetColTextColor(int col,COLORREF color);   //设置列文本颜色
    void SetItemTextColor(int col,int row,COLORREF color);
    void SetRowHeigt(int nHeight); //设置行高
    void SetHeaderFontHW(int nHeight,int nWith); //设置表头字体大小
    void SetHeaderTextColor(COLORREF color);
    COLORREF m_color;
    BOOL SetTextColor(COLORREF cr);
    void SetFontHW(int nHeight,int nWith);  //设置字体的高和宽

    void SetItemFontHW(int col,int row,int nHeight,int nWidth);
public:
    // 字体高度
    int m_fontHeight;
public:
    // 字体宽度
    int m_fontWith;
};

分割线

.cpp如下

#include "stdafx.h"
#include "ListCtrlCl.h"
struct stColor
{
int nRow;
int nCol;
COLORREF rgb;
};
struct stFont
{
int nRow;
int nCol;
int nFontWidth;
int nFontHeight;
};
// CListCtrlCl
IMPLEMENT_DYNAMIC(CListCtrlCl, CListCtrl)
CListCtrlCl::CListCtrlCl()
: m_nRowHeight(0)
, m_fontHeight(12)
, m_fontWith(0)
{
m_color = RGB(0,0,0);
}
CListCtrlCl::~CListCtrlCl()
{
}
BEGIN_MESSAGE_MAP(CListCtrlCl, CListCtrl)
ON_WM_MEASUREITEM()
ON_WM_MEASUREITEM_REFLECT()
ON_WM_LBUTTONDOWN()
ON_WM_RBUTTONDOWN()
END_MESSAGE_MAP()
// CListCtrlCl 消息处理程序
void CListCtrlCl::PreSubclassWindow()
{
// TODO: 在此添加专用代码和/或调用基类
ModifyStyle(0,LVS_OWNERDRAWFIXED);
CListCtrl::PreSubclassWindow();
CHeaderCtrl *pHeader = GetHeaderCtrl();
m_Header.SubclassWindow(pHeader->GetSafeHwnd());
}
void CListCtrlCl::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct)
{
// TODO: 添加您的代码以绘制指定项
TCHAR lpBuffer[256];
LV_ITEM lvi;
lvi.mask = LVIF_TEXT | LVIF_PARAM ;
lvi.iItem = lpDrawItemStruct->itemID ; 
lvi.iSubItem = 0;
lvi.pszText = lpBuffer ;
lvi.cchTextMax = sizeof(lpBuffer);
VERIFY(GetItem(&lvi));
LV_COLUMN lvc, lvcprev ;
::ZeroMemory(&lvc, sizeof(lvc));
::ZeroMemory(&lvcprev, sizeof(lvcprev));
lvc.mask = LVCF_WIDTH | LVCF_FMT;
lvcprev.mask = LVCF_WIDTH | LVCF_FMT;
CDC* pDC;
pDC = CDC::FromHandle(lpDrawItemStruct->hDC);
CRect rtClient;
GetClientRect(&rtClient);
for ( int nCol=0; GetColumn(nCol, &lvc); nCol++)
{
if ( nCol > 0 ) 
{
// Get Previous Column Width in order to move the next display item
GetColumn(nCol-1, &lvcprev) ;
lpDrawItemStruct->rcItem.left += lvcprev.cx ;
lpDrawItemStruct->rcItem.right += lpDrawItemStruct->rcItem.left; 
}
CRect rcItem;   
if (!GetSubItemRect(lpDrawItemStruct->itemID,nCol,LVIR_LABEL,rcItem))   
continue;   
::ZeroMemory(&lvi, sizeof(lvi));
lvi.iItem = lpDrawItemStruct->itemID;
lvi.mask = LVIF_TEXT | LVIF_PARAM;
lvi.iSubItem = nCol;
lvi.pszText = lpBuffer;
lvi.cchTextMax = sizeof(lpBuffer);
VERIFY(GetItem(&lvi));
CRect rcTemp;
rcTemp = rcItem;
if (nCol==0)
{
rcTemp.left -=2;
}
if ( lpDrawItemStruct->itemState & ODS_SELECTED )
{
pDC->FillSolidRect(&rcTemp, GetSysColor(COLOR_HIGHLIGHT)) ;
pDC->SetTextColor(GetSysColor(COLOR_HIGHLIGHTTEXT)) ;
}
else
{
COLORREF color;
color = GetBkColor();
pDC->FillSolidRect(rcTemp,color);
if (FindColColor(nCol,color))
{
pDC->FillSolidRect(rcTemp,color);
}
if (FindItemColor(nCol,lpDrawItemStruct->itemID,color))
{
pDC->FillSolidRect(rcTemp,color);
}
//pDC->SetTextColor(m_color);
}
pDC->SelectObject(GetStockObject(DEFAULT_GUI_FONT));
UINT   uFormat    = DT_CENTER ;
if (m_Header.m_Format[nCol]=='0')
{
uFormat = DT_LEFT;
}
else if (m_Header.m_Format[nCol]=='1')
{
uFormat = DT_CENTER;
}
else if (m_Header.m_Format[nCol]=='2')
{
uFormat = DT_RIGHT;
}
pDC->SetTextColor(m_color);
COLORREF color;
if (FindColTextColor(nCol,color))
{
pDC->SetTextColor(color);
}
if (FindItemTextColor(nCol,lpDrawItemStruct->itemID,color))
{
pDC->SetTextColor(color);
}
CFont nFont ,* nOldFont; 
int fontheight, fontwidth;
if(FindItemFontSize(nCol,lpDrawItemStruct->itemID,fontheight,fontwidth))
{
nFont.CreateFont(fontheight,fontwidth,0,0,0,FALSE,FALSE,0,0,0,0,0,0,_TEXT("宋体"));//创建字体 
nOldFont = pDC->SelectObject(&nFont);
int ofst;
ofst = rcItem.Height() - fontheight;
rcItem.OffsetRect(0,ofst/2);//居中显示
}
else
{
nFont.CreateFont(m_fontHeight,m_fontWith,0,0,0,FALSE,FALSE,0,0,0,0,0,0,_TEXT("宋体"));//创建字体 
nOldFont = pDC->SelectObject(&nFont);
TEXTMETRIC metric;
metric.tmHeight;
pDC->GetTextMetrics(&metric);
int ofst;
ofst = rcItem.Height() - metric.tmHeight;
rcItem.OffsetRect(0,ofst/2);//居中显示
}
DrawText(lpDrawItemStruct->hDC, lpBuffer, strlen(lpBuffer), &rcItem, uFormat) ;
DeleteObject(&nFont);
pDC->SelectStockObject(SYSTEM_FONT) ;
}
}
void CListCtrlCl::OnMeasureItem(int nIDCtl, LPMEASUREITEMSTRUCT lpMeasureItemStruct)
{
// TODO: 在此添加消息处理程序代码和/或调用默认值
CListCtrl::OnMeasureItem(nIDCtl, lpMeasureItemStruct);
}
void CListCtrlCl::MeasureItem(LPMEASUREITEMSTRUCT lpMeasureItemStruct)
{
if (m_nRowHeight>0)
{
lpMeasureItemStruct->itemHeight = m_nRowHeight;
}
}
int CListCtrlCl::InsertColumn(int nCol, LPCTSTR lpszColumnHeading, int nFormat /* = LVCFMT_LEFT */, int nWidth /* = -1 */, int nSubItem /* = -1 */)
{
m_Header.m_HChar.Add(lpszColumnHeading);
if (nFormat==LVCFMT_LEFT)
{
m_Header.m_Format = m_Header.m_Format + "0";
}
else if (nFormat==LVCFMT_CENTER)
{
m_Header.m_Format = m_Header.m_Format + "1";
}
else if (nFormat==LVCFMT_RIGHT)
{
m_Header.m_Format = m_Header.m_Format + "2";
}
else
{
m_Header.m_Format = m_Header.m_Format + "1";
}
return CListCtrl::InsertColumn(nCol,lpszColumnHeading,nFormat,nWidth,nSubItem);
}
// Gradient - 渐变系数，立体背景用,不用渐变设为0
void CListCtrlCl::SetHeaderBKColor(int R, int G, int B, int Gradient) //设置表头背景色
{
m_Header.m_R = R;
m_Header.m_G = G;
m_Header.m_B = B;
m_Header.m_Gradient = Gradient;
}
// 设置表头高度
void CListCtrlCl::SetHeaderHeight(float Height) //设置表头高度
{
m_Header.m_Height = Height;
}
bool CListCtrlCl::FindColColor(int col,COLORREF &color) //查找列颜色
{
int flag = 0;
for (POSITION pos = m_ptrListCol.GetHeadPosition();pos!=NULL;)
{
stColor *pColor = (stColor*)m_ptrListCol.GetNext(pos);
if (pColor->nCol==col)
{
flag = 1;
color = pColor->rgb;
break;
}
}
if (1==flag)
{
return true;
}
return false;
}
bool CListCtrlCl::FindItemColor(int col,int row,COLORREF &color) //查找颜色
{
int flag = 0;
for (POSITION pos = m_ptrListItem.GetHeadPosition();pos!=NULL;)
{
stColor *pColor = (stColor*)m_ptrListItem.GetNext(pos);
if (pColor->nCol==col&&pColor->nRow==row)
{
flag = 1;
color = pColor->rgb;
break;
}
}
if (1==flag)
{
return true;
}
return false;
}
void CListCtrlCl::SetColColor(int col,COLORREF color) //设置列颜色
{
stColor *pColor  = new stColor;
pColor->nCol = col;
pColor->rgb = color;
m_ptrListCol.AddTail(pColor);
}
void CListCtrlCl::SetItemColor(int col,int row,COLORREF color) //设置格子颜色
{
stColor *pColor  = new stColor;
pColor->nCol = col;
pColor->nRow = row;
pColor->rgb = color;
m_ptrListItem.AddTail(pColor);
}
void CListCtrlCl::SetRowHeigt(int nHeight) //高置行高
{
m_nRowHeight = 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 CListCtrlCl::SetHeaderFontHW(int nHeight,int nWith) //设置头部字体宽和高
{
m_Header.m_fontHeight = nHeight;
m_Header.m_fontWith = nWith;
}
void CListCtrlCl::SetHeaderTextColor(COLORREF color) //设置头部字体颜色
{
m_Header.m_color = color;
}
BOOL CListCtrlCl::SetTextColor(COLORREF cr)  //设置字体颜色
{
m_color = cr;
return TRUE;
}
void CListCtrlCl::SetFontHW(int nHeight,int nWith) //设置字体高和宽
{
m_fontHeight = nHeight;
m_fontWith = nWith;
}
void CListCtrlCl::SetColTextColor(int col,COLORREF color)
{
stColor *pColor = new stColor;
pColor->nCol = col;
pColor->rgb = color;
m_colTextColor.AddTail(pColor);
}
bool CListCtrlCl::FindColTextColor(int col,COLORREF &color)
{
int flag = 0;
for (POSITION pos = m_colTextColor.GetHeadPosition();pos!=NULL;)
{
stColor *pColor = (stColor*)m_colTextColor.GetNext(pos);
if (pColor->nCol==col)
{
flag = 1;
color = pColor->rgb;
break;
}
}
if (1==flag)
{
return true;
}
return false;
}
bool CListCtrlCl::FindItemTextColor(int col,int row,COLORREF &color)
{
int flag = 0;
for (POSITION pos = m_ItemTextColor.GetHeadPosition();pos!=NULL;)
{
stColor *pColor = (stColor*)m_ItemTextColor.GetNext(pos);
if (pColor->nCol==col&&pColor->nRow==row)
{
flag = 1;
color = pColor->rgb;
break;
}
}
if (1==flag)
{
return true;
}
return false;
}
void CListCtrlCl::SetItemTextColor(int col,int row,COLORREF color)
{
stColor *pColor = new stColor;
pColor->nCol = col;
pColor->nRow = row;
pColor->rgb = color;
m_ItemTextColor.AddTail(pColor);
}
void CListCtrlCl::SetItemFontHW(int col,int row,int nHeight,int nWidth)
{
stFont *pFont=new stFont;
pFont->nCol=col;
pFont->nRow=row;
pFont->nFontHeight=nHeight;
pFont->nFontWidth=nWidth;
m_ItemFontSize.AddTail(pFont);
}
bool CListCtrlCl::FindItemFontSize(int col,int row,int &height,int &width)
{
int flag = 0;
for (POSITION pos = m_ItemFontSize.GetHeadPosition();pos!=NULL;)
{
stFont *pFont = (stFont*)m_ItemFontSize.GetNext(pos);
if (pFont->nCol==col&&pFont->nRow==row)
{
flag = 1;
height=pFont->nFontHeight;
width = pFont->nFontWidth;
break;
}
}
if (1==flag)
{
return true;
}
return false;
}

原理：要明白DrawItem是关键，即绘每一个项，我们就在这里面搞事！CPtrList 看名字就知道叫指针列表，用来保存要修改的项，如果那项要修改，stFont与stColor就是我们要添加进去的指针，哪里要修改哪里就new一个，再addtail（添加到尾部），再写一个Find方法，某项有无被设置了颜色或者字体等属性，并在DrawItem里调用，找到就设置某项，基本原理即清楚了！附一张效果图：
这里写图片描述
不得不说还是相当的美观！