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);
}

  

链接：http://www.vckbase.com/english/code/dialog/folder_dialog.shtml.htm

 

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