CFileDialog的各种风格的目录/文件夹选择对话框---（CFolderDialog）

1. 标准的文件夹选择对话框：可以使用在非MFC程序中，调用的标准API SHBrowserForFolder。

源码：

#include "shlobj.h"  
#include <STRING>  
  
// Function name    : GetFolder  
// Description      : Open and get Folder Dialog.  
// Return type      : true means click ok, false mean no select and cancel.  
// Argument         : folder path reference  
// Argument         : dialog window caption  
// Argument         : parent window handle  
bool GetFolder(std::string& folderpath, const char* szCaption = NULL, HWND hOwner = NULL)  
{  
    bool retVal = false;  
  
    // The BROWSEINFO struct tells the shell  
    // how it should display the dialog.  
    BROWSEINFO bi;  
    memset(&bi, 0, sizeof(bi));  
    bi.ulFlags   = BIF_USENEWUI;  
    bi.hwndOwner = hOwner;  
    bi.lpszTitle = szCaption;  
  
    // must call this if using BIF_USENEWUI  
    ::OleInitialize(NULL);  
  
    // Show the dialog and get the itemIDList for the selected folder.  
    LPITEMIDLIST pIDL = ::SHBrowseForFolder(&bi);  
  
    if(pIDL != NULL)  
    {  
        // Create a buffer to store the path, then get the path.  
        char buffer[_MAX_PATH] = {'\0'};  
        if(::SHGetPathFromIDList(pIDL, buffer) != 0)  
        {  
            // Set the string value.  
            folderpath = buffer;  
            retVal = true;  
        }         
  
        // free the item id list  
        CoTaskMemFree(pIDL);  
    }  
  
    ::OleUninitialize();  
  
    return retVal;  
} 

调用：

std::string szPath("");  
  
if (GetFolder(szPath, "Select a folder.") == true)  
{  
    printf("You selected: \"%s\".\n", szPath.c_str());  
}  
else  
{  
    printf("No folder selected!\n");  
}  

界面：

2. 带导航栏的文件夹选择对话框：只在MFC程序中使用，从MFC的CFileDialog派生。

源码-头文件-Folder_dialog.h：

#pragma once  
  
// CFolderDialog dialog  
class CFolderDialog : public CFileDialog  
{  
    DECLARE_DYNAMIC(CFolderDialog)  
  
public:  
    CFolderDialog(CString* pPath, CWnd* pParentWnd = NULL);  
    static WNDPROC m_wndProc;  
    CString* m_pPath;  
  
protected:  
    DECLARE_MESSAGE_MAP()  
  
private:  
    virtual void OnInitDone();  
    virtual void OnFileNameChange();  
    virtual void OnFolderChange();  
    void ChangeFolder();  
};  

源码-Folder_dialog.cpp:

#include "stdafx.h"  
#include "folder_dialog.h"  
#include <DLGS.H>  
#include <WINUSER.H>  
  
#ifdef _DEBUG  
#define new DEBUG_NEW  
#undef THIS_FILE  
static char THIS_FILE[] = __FILE__;  
#endif  
  
// CFolderDialog  
IMPLEMENT_DYNAMIC(CFolderDialog, CFileDialog)  
  
WNDPROC CFolderDialog::m_wndProc = NULL;  
  
// Function name    : CFolderDialog::CFolderDialog  
// Description      : Constructor  
// Return type      :  
// Argument         : CString* pPath ; represent string where selected folder wil be saved  
CFolderDialog::CFolderDialog(CString* pPath, CWnd* pParentWnd) : CFileDialog(true, NULL, _T("*..*"), 6UL, NULL, pParentWnd)  
{  
    m_pPath = pPath;  
}  
  
BEGIN_MESSAGE_MAP(CFolderDialog, CFileDialog)  
END_MESSAGE_MAP()  
  
// Function name    : WindowProcNew  
// Description      : Call this function when user navigate into CFileDialog.  
// Return type      : LRESULT  
// Argument         : HWND hwnd  
// Argument         : UINT message  
// Argument         : WPARAM wParam  
// Argument         : LPARAM lParam  
LRESULT CALLBACK WindowProcNew(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)  
{  
    if(message ==  WM_COMMAND)  
    {  
        if(HIWORD(wParam) == BN_CLICKED)  
        {  
            if(LOWORD(wParam) == IDOK)  
            {  
                if(CFileDialog* pDlg = (CFileDialog*)CWnd::FromHandle(hwnd))  
                {  
                    TCHAR path[MAX_PATH];  
                    GetCurrentDirectory(MAX_PATH, path);  
                    *((CFolderDialog*)pDlg->GetDlgItem(0))->m_pPath = CString(path);  
                    pDlg->EndDialog(IDOK);  
                    return NULL;  
                }  
            }  
        }  
    }  
    return CallWindowProc(CFolderDialog::m_wndProc, hwnd, message, wParam, lParam);  
}  
  
// Function name    : CFolderDialog::OnInitDone  
// Description      : For update the wiew of CFileDialog  
// Return type      : void  
void CFolderDialog::OnInitDone()  
{  
    HideControl(edt1);  
    //HideControl(stc3);    //Select file static text  
    //HideControl(cmb13);   //Current file combobox  
    HideControl(cmb1);      //File filter combobox  
    HideControl(stc2);      //Filter static text  
  
    //Rearrange the controls in the bottom.  
    CWnd* pFD = GetParent();  
    //Get Cancel Button Position  
    CRect rectCancel;  
    pFD->GetDlgItem(IDCANCEL)->GetWindowRect(rectCancel);  
    pFD->ScreenToClient(rectCancel);  
  
    //Enlarge Listview control  
    CRect rectList2;  
    pFD->GetDlgItem(lst1)->GetWindowRect(rectList2);  
    pFD->ScreenToClient(rectList2);  
    pFD->GetDlgItem(lst1)->SetWindowPos(0, 0, 0, rectList2.Width(), abs(rectList2.top - (rectCancel.top - 4)), SWP_NOMOVE | SWP_NOZORDER);  
  
    //Set Static text and position  
    CRect rectText;  
    pFD->GetDlgItem(stc3)->GetWindowRect(rectText);  
    pFD->ScreenToClient(rectText);  
    pFD->GetDlgItem(stc3)->SetWindowPos(0, rectList2.left, rectCancel.top + 6, 0, 0, SWP_NOZORDER | SWP_NOSIZE);  
    SetControlText(stc3, _T("Selected:"));  
  
    //ComboBox of current file  
    CRect rectComBo;  
    pFD->GetDlgItem(cmb13)->GetWindowRect(rectComBo);  
    pFD->ScreenToClient(rectComBo);  
    pFD->GetDlgItem(cmb13)->SetWindowPos(0, rectText.left + rectText.Width() - 40, rectCancel.top, 0, 0, SWP_NOZORDER | SWP_NOSIZE);  
  
    //Set OK Button Position  
    CRect rectOK;  
    pFD->GetDlgItem(IDOK)->GetWindowRect(rectOK);  
    pFD->ScreenToClient(rectOK);  
    pFD->GetDlgItem(IDOK)->SetWindowPos(0, rectCancel.left - rectOK.Width() - 2, rectCancel.top, 0, 0, SWP_NOZORDER | SWP_NOSIZE);  
    SetControlText(IDOK, _T("Select"));  
  
    pFD->SetWindowText(_T("Choose folder"));  
    pFD->CenterWindow();  
    m_wndProc = (WNDPROC)SetWindowLong(pFD->m_hWnd, GWL_WNDPROC, (long)WindowProcNew);  
}  
  
//Change the combobox context when select folder.  
void CFolderDialog::OnFileNameChange()  
{  
    ChangeFolder();  
}  
  
//If the folder contains no sub folder, the OnFileNameChange will not be triggered.  
//Add this OnFolderChange to double sure even if there is no sub folder.  
void CFolderDialog::OnFolderChange()  
{  
    ChangeFolder();  
}  
  
//Change the combobox text to current selected folder  
void CFolderDialog::ChangeFolder()  
{  
    TCHAR path[MAX_PATH] = {0};  
    GetCurrentDirectory(MAX_PATH, path);  
    SetControlText(cmb13, path);  
}  

调用：

CString folderPath;  
CFolderDialog dlg(&folderPath, this);  
if(IDOK == dlg.DoModal())  
{  
    UpdateData(false);  
}  

3. 复杂的但是功能比较全的窗口XFolderDialog:

界面：

链接：http://www.codeproject.com/KB/dialog/XFolderDialog.aspx