CMFCShellListCtrl使用方法

CMFCShellListCtrl是个很有用的新类，用它可以直接构造出文件/文件夹选择页面，先看看结果图

1.替换中文列名并改变列宽及居中显示

CMFCShellListCtrl创建出来的时候默认列名是英文的,这样改成中文：

1. 从CMFCShellListCtrl派生出自定义类

   class CMyShelistCtrl : public CMFCShellListCtrl

   
   
2. 定义CMyShelistCtrl变量
3. 控件风格改为Report

   	m_ShelListCtrl.ModifyStyle(LVS_TYPEMASK, LVS_REPORT);
   

   
   
4. 重载虚函数

   	virtual void OnSetColumns();
   

   
   
5. 重载函数写

   LVCOLUMN lvColumn;
   	lvColumn.mask = LVCF_TEXT | LVCF_FMT | LVCF_WIDTH ;
   	LPWSTR sName[4] = {_T("名称"),_T("大小"),_T("类型"),_T("修改")};
   	int nWidth[4] = {200,100,100,200};
   
   	for(int i=0;i<4;i++)
   	{
   		lvColumn.pszText = sName[i];
   		lvColumn.cx = nWidth[i];	
   		lvColumn.fmt = LVCFMT_CENTER;
   		SetColumn(i,&lvColumn);
   	}

   
   
6. END

2.获得鼠标单击控件列出的文件夹/文件的名字

1. 响应控件NM_CLICK事件

   	ON_NOTIFY(NM_CLICK, IDC_MFCSHELLLIST, &CShellListCtrlDlg::OnNMClickMfcshelllist)
   

   
   
2. 响应函数里添加代码

   void CShellListCtrlDlg::OnNMClickMfcshelllist(NMHDR *pNMHDR, LRESULT *pResult)
   {
   	LPNMITEMACTIVATE pNMItemActivate = reinterpret_cast(pNMHDR);
   	// TODO: Add your control notification handler code here
   	NM_LISTVIEW* pNMListView = (NM_LISTVIEW*)pNMHDR;
   	if(pNMListView->iItem != -1)
   	{
   	
   		m_sCurrName = m_ShelListCtrl.GetItemText(pNMListView->iItem,
   			pNMListView->iSubItem);
   		m_FileNameEdit.SetWindowText(m_sCurrName);
   		
   	}
   	*pResult = 0;
   }

   
   
3. 其中m_sCurrName即为点击获得的文件夹/文件名END

3.过滤要显示的文件夹/文件

1. 重载虚函数

   	virtual HRESULT EnumObjects (LPSHELLFOLDER pParentFolder, LPITEMIDLIST pidlParent); 
   

   
   
2. 填写下面的代码

   HRESULT CMyShelistCtrl :: EnumObjects (LPSHELLFOLDER pParentFolder, LPITEMIDLIST pidlParent) 
   {
   	ASSERT_VALID(this);
   
   
   	LPENUMIDLIST pEnum = NULL;
   	HRESULT hRes = pParentFolder->EnumObjects(NULL, m_nTypes, &pEnum);
   
   	if (SUCCEEDED(hRes) && pEnum != NULL)
   	{
   		LPITEMIDLIST pidlTemp;
   		DWORD dwFetched = 1;
   		LPAFX_SHELLITEMINFO pItem;
   
   		//enumerate the item's PIDLs
   		while (pEnum->Next(1, &pidlTemp, &dwFetched) == S_OK && dwFetched)
   		{
   			LVITEM lvItem;
   			ZeroMemory(&lvItem, sizeof(lvItem));
   
   			//fill in the TV_ITEM structure for this item
   			lvItem.mask = LVIF_PARAM | LVIF_TEXT | LVIF_IMAGE | LVIF_STATE;
   
   			//AddRef the parent folder so it's pointer stays valid
   			pParentFolder->AddRef();
   
   			//put the private information in the lParam
   			pItem = (LPAFX_SHELLITEMINFO)GlobalAlloc(GPTR, sizeof(AFX_SHELLITEMINFO));
   
   			pItem->pidlRel = pidlTemp;
   			pItem->pidlFQ = afxShellManager->ConcatenateItem(pidlParent, pidlTemp);
   
   			pItem->pParentFolder = pParentFolder;
   
   			
   
   			lvItem.lParam = (LPARAM)pItem;
   
   			lvItem.pszText = _T("");
   			lvItem.iImage = OnGetItemIcon(GetItemCount(), pItem);
   
   			//determine if the item is shared
   			DWORD dwAttr = SFGAO_FOLDER | SFGAO_DISPLAYATTRMASK;
   			pParentFolder->GetAttributesOf(1, (LPCITEMIDLIST*)&pidlTemp, &dwAttr);
   
   			if (dwAttr & SFGAO_SHARE)
   			{
   				lvItem.mask |= LVIF_STATE;
   				lvItem.stateMask |= LVIS_OVERLAYMASK;
   				lvItem.state |= INDEXTOOVERLAYMASK(1); //1 is the index for the shared overlay image
   			}
   
   			if (dwAttr & SFGAO_GHOSTED)
   			{
   				lvItem.mask |= LVIF_STATE;
   				lvItem.stateMask |= LVIS_CUT;
   				lvItem.state |= LVIS_CUT;
   			}
   			if (dwAttr & SFGAO_FOLDER)
   			{
   			}
   			else
   			{
   				
   				TCHAR szPath [MAX_PATH];
   
   				if (SHGetPathFromIDList(pItem->pidlFQ, szPath))
   				{
   					CFileStatus fs;
   					if (CFile::GetStatus(szPath, fs))
   					{
   						CString s = szPath;
   						int n = s.ReverseFind('.');
   						if(n!=-1)
   						{
   							s = s.Mid(n+1);
   							s.MakeLower();					
   							
   							if(s == _T("exe"))//改写扩展名就可以过滤
   								continue;
   							
   							
   						}
   					}
   				}
   
   
   			}
   			int iItem = InsertItem(&lvItem);
   			if (iItem >= 0)
   			{
   				// Set columns:
   				const int nColumns = m_wndHeader.GetItemCount();
   				for (int iColumn = 0; iColumn < nColumns; iColumn++)
   				{
   					SetItemText(iItem, iColumn, OnGetItemText(iItem, iColumn, pItem));
   				}
   			}
   
   			dwFetched = 0;
   		}
   
   		pEnum->Release();
   	}
   
   	return hRes;
   }
   

   
   
3. 过滤之后结果END

4.只显示文件夹或文件或都显示

	m_ShelListCtrl.SetItemTypes(SHCONTF_FOLDERS | SHCONTF_NONFOLDERS);//看名字就应该知道怎么用吧