保存路径选择对话框

一图胜千言：

 保存了上次使用的记录

浏览切换填写的路径目录

酱紫写的：

    CString pathName;

    SelectPathDlg pathDlg;
    if (pathDlg.DoModal() == IDCANCEL)
    {
        return;
    }
    else
    {
        CString pathName = pathDlg.getFilePath();
    }

#pragma once
#include "resource.h"

// SelectPathDlg 对话框

class SelectPathDlg : public CDialogEx
{
    DECLARE_DYNAMIC(SelectPathDlg)

public:
    SelectPathDlg(CWnd* pParent = NULL);   // 标准构造函数
    virtual ~SelectPathDlg();

// 对话框数据
    enum { IDD = IDD_FILE_PATH_DLG };

protected:
    virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV 支持

    DECLARE_MESSAGE_MAP()

    //UI
public:
    afx_msg void OnBnClickedFindPath();
    afx_msg void OnBnClickedOk();
    afx_msg void OnBnClickedCancel();
    virtual BOOL OnInitDialog();

    //logic
public:
    void loadSettings();    //加载配置
    void saveSettings();    //保存配置
    CString getFilePath();    //获得当前结果目录

protected:
    CString openFilePathDlg();    //返回用户选择的目录

private:
    CString m_filePath;        //目录
};

// SelectPathDlg.cpp : 实现文件
//

#include "stdafx.h"
#include "SelectPathDlg.h"
#include "afxdialogex.h"

#include "HGTools.h"
#include "XmlHandlePlus.h"

// SelectPathDlg 对话框

IMPLEMENT_DYNAMIC(SelectPathDlg, CDialogEx)

SelectPathDlg::SelectPathDlg(CWnd* pParent /*=NULL*/)
    : CDialogEx(SelectPathDlg::IDD, pParent)
    , m_filePath(_T(""))
{

}

SelectPathDlg::~SelectPathDlg()
{
}

void SelectPathDlg::DoDataExchange(CDataExchange* pDX)
{
    CDialogEx::DoDataExchange(pDX);
    DDX_Text(pDX, IDC_PATH_EDITER, m_filePath);
}


BEGIN_MESSAGE_MAP(SelectPathDlg, CDialogEx)
    ON_BN_CLICKED(ID_FIND_PATH, &SelectPathDlg::OnBnClickedFindPath)
    ON_BN_CLICKED(IDOK, &SelectPathDlg::OnBnClickedOk)
    ON_BN_CLICKED(IDCANCEL, &SelectPathDlg::OnBnClickedCancel)
END_MESSAGE_MAP()


// SelectPathDlg 消息处理程序


void SelectPathDlg::OnBnClickedFindPath()
{
    UpdateData(TRUE);
    CString newPath = openFilePathDlg();
    if (newPath != "")
    {
        m_filePath = newPath;
        UpdateData(FALSE);
    }
}


void SelectPathDlg::OnBnClickedOk()
{
    UpdateData(TRUE);
    saveSettings();
    UpdateData(FALSE);
    HGTools::createDir(m_filePath);
    CDialogEx::OnOK();
}


void SelectPathDlg::OnBnClickedCancel()
{
    
    CDialogEx::OnCancel();
}


BOOL SelectPathDlg::OnInitDialog()
{
    CDialogEx::OnInitDialog();
    loadSettings();
    UpdateData(FALSE);
    return TRUE;  // return TRUE unless you set the focus to a control
    // 异常: OCX 属性页应返回 FALSE
}

void SelectPathDlg::loadSettings()
{
    //配置文件路径
    CString hgmPath = HGTools::getRelativePath("kdata\Op.hgm");
    CString xmlPath = HGTools::getXmlPathFromHgxPath(hgmPath);
    //解密
    HGTools::decryptFile(hgmPath,xmlPath);
    //加载文件
    TinyXml::TiXmlDocument doc(xmlPath);
    doc.LoadFile();
    //加载辅助
    TinyXml::XmlHandlePlus docHandler(&doc);
    docHandler.changeDirectoryTo("/Root/");
    docHandler.setParamElementName("Param");

    //读取数据
    std::string str_filePath = docHandler.getParam("LastSavePath","C:\");
    m_filePath.Format("%s",str_filePath.c_str());

    //关闭文件
    HGTools::deleteFile(xmlPath);
}

void SelectPathDlg::saveSettings()
{
    //配置文件路径
    CString hgmPath = HGTools::getRelativePath("kdata\Op.hgm");
    CString xmlPath = HGTools::getXmlPathFromHgxPath(hgmPath);
    //解密
    HGTools::decryptFile(hgmPath,xmlPath);
    //加载文件
    TinyXml::TiXmlDocument doc(xmlPath);
    doc.LoadFile();
    //加载辅助
    TinyXml::XmlHandlePlus docHandler(&doc);
    docHandler.changeDirectoryTo("/Root/");
    docHandler.setParamElementName("Param");

    //保存数据
    docHandler.setParam("LastSavePath",m_filePath.GetBuffer());

    //保存
    doc.SaveFile(xmlPath);
    HGTools::encryptFile(xmlPath,hgmPath);
    //关闭文件
    HGTools::deleteFile(xmlPath);
}

#define BIF_NEWDIALOGSTYLE   0x40

int CALLBACK BrowseCallbackProc(HWND hwnd,UINT uMsg,LPARAM lParam,LPARAM lpData)  
{
    if(uMsg == BFFM_INITIALIZED)
    {  
        SendMessage(hwnd, BFFM_SETSELECTION, TRUE, lpData);
    }
    return 0;  
}


CString SelectPathDlg::openFilePathDlg()
{
    CString pathName;

    char  szDir[1000]; 
    BROWSEINFO bi; 
    ITEMIDLIST *pidl;  
    bi.hwndOwner = this->m_hWnd;  
    bi.pidlRoot = NULL; 
    bi.pszDisplayName = szDir;  
    bi.lpszTitle = _T("请选择目录");   
    bi.ulFlags = BIF_STATUSTEXT | BIF_USENEWUI | BIF_RETURNONLYFSDIRS; 
    CFileFind   finder;
    if(finder.FindFile(m_filePath)==FALSE)
    {
        bi.lParam =0;
        bi.lpfn = NULL;
    }
    else
    {
        bi.lParam = (long)(m_filePath.GetBuffer(m_filePath.GetLength()));//初始化路径，形如(_T("c:\Symbian"));
        bi.lpfn = BrowseCallbackProc;
    }
    finder.Close();
    bi.iImage = 0;  
    pidl = SHBrowseForFolder(&bi); 
    if(pidl == NULL) return "";
    if(!SHGetPathFromIDList(pidl, szDir)) return ""; 

    pathName = szDir;
    return pathName;
}
//获得文件路径
CString SelectPathDlg::getFilePath()
{
    return m_filePath;
}