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Selecting a Subfolder from a Particular Folder

, 23 Feb 2010 CPOL
Restricting the user to browse and select from a particular folder
// BrowsePFDlg.cpp : implementation file
//

#include "stdafx.h"
#include "BrowsePF.h"
#include "BrowsePFDlg.h"
#include "FoldersDialog.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

extern TCHAR szDir[MAX_PATH];

/////////////////////////////////////////////////////////////////////////////
// CBrowsePFDlg dialog

CBrowsePFDlg::CBrowsePFDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CBrowsePFDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CBrowsePFDlg)
	m_RootFolder = _T("");
	m_ChosenFolder = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CBrowsePFDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CBrowsePFDlg)
	DDX_Text(pDX, IDC_EDIT_ROOT_FOLDER, m_RootFolder);
	DDX_Text(pDX, IDC_EDIT_CHOSEN_FOLDER, m_ChosenFolder);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CBrowsePFDlg, CDialog)
	//{{AFX_MSG_MAP(CBrowsePFDlg)
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON_FOLDER, OnButtonFolder)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CBrowsePFDlg message handlers

BOOL CBrowsePFDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// TODO: Add extra initialization here
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CBrowsePFDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CBrowsePFDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CBrowsePFDlg::OnButtonFolder() 
{
	UpdateData(TRUE);
	if (m_RootFolder.IsEmpty())
    {
        AfxMessageBox(_T("Enter a valid root folder path"));
        return;
    }
    wcscpy(szDir, m_RootFolder);
	HWND hWnd = GetSafeHwnd();
	CFoldersDialog objFD;
	if (objFD.BrowseFolder(hWnd, m_RootFolder) == 0)
    {
	    m_ChosenFolder = szDir;
	    UpdateData(FALSE);
    }
}

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This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Author

Ahamad Alisha
CEO GIPL
India India
Ahamad has done M.Tech. in Information Technology. He has 15 years software development experience. He started learning programming with GW-BASIC. He learnt COBOL, Pascal, Fortran, C, C++, Java and C#. He worked with DOS, Unix, Novel Netware and Windows platforms. He has been working on Microsoft technologies for the last 10 years. He worked with .NET, Visual C++, ATL COM/DCOM, Win SDK, MFC, WTL, Visual Basic, ASP, JavaScript, XML, OOAD and Rational Rose. He has written three books on Computer Science:
 
1. Programming in GW-BASIC, BPB Publications, New Delhi, 1993
2. Computer Science with C++, Allied Publishers, New Delhi, 1997
3. Introduction to C++, Allied Publishers, New Delhi. 1998
 
He enjoys playing badminton and musical keyboards in his spare time. He also participates in community activities. He can be reached by ahamadalisha@yahoo.com

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