Re: bug in CFileDialog for selecting folders

From:
"AliR [VC++ MVP]" <AliR@online.nospam>
Newsgroups:
microsoft.public.vc.mfc
Date:
Tue, 23 Jun 2009 09:50:30 -0500
Message-ID:
<s560m.1280$lv5.4@flpi149.ffdc.sbc.com>
Have you tried creating the CFileDialog with the OFN_NOCHANGEDIR flag?

AliR.

"Janma" <rohitku@gmail.com> wrote in message
news:1af62769-18ed-4a8a-89de-02edfee4c788@f19g2000yqh.googlegroups.com...

I am creating an application for selecting folders. So i have created
a new class with CFileDialog as the base class. When the dialog comes
up and i click on a folder and hit Select, then it returns with the
selected folder path. My application then moves on to delete the
selected folder. So i call RemoveDirectory on the returned folder
path. It works fine. But suppose on the folder selection dialog, i
double click the folder i want to delete and then hit select, the
dialog returns with the selected folder path. But i cannot delete the
folder after that unless i close the main dialog. It seems like the
handle of the folder path i selected is still kept open by the dialog
and i cant even delete by windows shift-delete. What could be the
issue here? Is there a bug?

Code is as follows

/////////////////////////////////////////////////////////////////////////////
// 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) : CFileDialog(TRUE, NULL,
_T("*..*"))
{
m_pPath = pPath;
}

BEGIN_MESSAGE_MAP(CFolderDialog, CFileDialog)
//{{AFX_MSG_MAP(CFolderDialog)
// NOTE - the ClassWizard will add and remove mapping macros here.
//}}AFX_MSG_MAP
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);
HideControl(cmb1);
HideControl(stc2);
CWnd* pFD = GetParent();
CRect rectCancel; pFD->GetDlgItem(IDCANCEL)->GetWindowRect
(rectCancel);
pFD->ScreenToClient(rectCancel);
CRect rectOK; pFD->GetDlgItem(IDOK)->GetWindowRect(rectOK);
pFD->ScreenToClient(rectOK);
pFD->GetDlgItem(IDOK)->SetWindowPos(0,rectCancel.left - rectOK.Width
() - 4, rectCancel.top, 0,0, SWP_NOZORDER | SWP_NOSIZE);
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);
SetControlText(IDOK, _T("Select"));
pFD->SetWindowText(_T("Choose folder"));
m_wndProc = (WNDPROC)SetWindowLong(pFD->m_hWnd, GWL_WNDPROC, (long)
WindowProcNew);
}

Thanks in advance,
Rohit

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