asked on

How to open a File Browse Dialog

How can I create a File browsing dialog that returns the directory chosen?

I tried this:

http://www.codeproject.com/dialog/cfolderdialog.asp?df=100&forumid=3533&select=957565

but can't get it to work (errors are posted at the bottom of that page)

thanks!

jkr

Usually, you'd use 'SHBrowseForFolder()' to do that, e.g.

#include <shlobj.h>

void PickFolder ( CString& strFolder)
{

LPMALLOC pMalloc; /* Gets the Shell's default allocator */

if ( ::SHGetMalloc ( &pMalloc) == NOERROR)
{
BROWSEINFO bi;
char pszBuffer [ MAX_PATH];
LPITEMIDLIST pidl;

// Get help on BROWSEINFO struct - it's got all the bit settings.
bi.hwndOwner = GetSafeHwnd();
bi.pidlRoot = NULL;
bi.pszDisplayName = pszBuffer;
bi.lpszTitle = _T("Select a Folder");
bi.ulFlags = 0;
bi.lpfn = NULL;
bi.lParam = 0;

// This next call issues the dialog box.
if ( pidl = ::SHBrowseForFolder ( &bi))
{
if ( ::SHGetPathFromIDList ( pidl, pszBuffer))
{
// At this point pszBuffer contains the selected folder */
strFolder = pszBuffer;
}

// Free the PIDL allocated by SHBrowseForFolder.
pMalloc->Free ( pidl);
}

// Release the shell's allocator.
pMalloc->Release();
}
}

galneweinhaw

ASKER

That works great!

is there any way for me to specify the folder the browse window starts in? (without restricting the browsing by using a root)

thanks

jkr

http://www.codeproject.com/dialog/folderbrowser.asp ("How to show a dialog to let users browse for and select a folder") describes that issu epretty well, and better than I could do.

SOLUTION

Nass89

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galneweinhaw

ASKER

I tried the codeproject thing but it's giving me this error...

Compiling...
UpdateIESDlg.cpp
O:\ENGINEERING\SHARED\PHOTOMET\PROGRAMS\OTHER PROGRAMS\UPDATEIES\UpdateIES\UpdateIESDlg.cpp(302) : error C2440: '=' : cannot convert from 'int (__stdcall CUpdateIESDlg::*)(struct HWND__ *,unsigned int,long,long)' to 'int (__stdcall *)(struct HWND__
*,unsigned int,long,long)'
There is no context in which this conversion is possible
O:\ENGINEERING\SHARED\PHOTOMET\PROGRAMS\OTHER PROGRAMS\UPDATEIES\UpdateIES\UpdateIESDlg.cpp(312) : warning C4390: ';' : empty controlled statement found; is this the intent?
Error executing cl.exe.
Creating browse info file...

UpdateIES.exe - 1 error(s), 1 warning(s)

The first occurs here:
bi.lpfn = BrowseCallbackProc;

The warning here:
if(SUCCEEDED(SHGetMalloc(&pMalloc)) && pMalloc);
pMalloc->Free(pidl);
pMalloc->Release();

thanks for the help.

ASKER CERTIFIED SOLUTION

jkr

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galneweinhaw

ASKER

Thanks to both of you for the help

unfortunately I am still getting this error using the code above:

error C2440: '=' : cannot convert from 'int (__stdcall CUpdateIESDlg::*)(struct HWND__ *,unsigned int,long,long)' to 'int (__stdcall *)(struct HWND__ *,unsigned int,long,long)' There is no context in which this conversion is possible

It is occuring at this line:
bi.lpfn = BrowseCallbackProc;

Also getting the error:
error C2660: 'SendMessageA' : function does not take 4 parameters

from lines:
SendMessage(hwnd, BFFM_SETSELECTION, TRUE, (LPARAM)szDir);
//and
SendMessage(hwnd,BFFM_SETSTATUSTEXT,0,(LPARAM)szDir);

thanks again.

jkr

>>error C2440: '=' : cannot convert from

The browse callback cannot be a non-static member of CUpdateIESDlg - either make that not a member function or declare it as 'static'.

>>error C2660: 'SendMessageA' : function does not take 4 parameters

The compiler thinks you are referring to CWnd::SendMessage() - use

::SendMessage(hwnd, BFFM_SETSELECTION, TRUE, (LPARAM)szDir);
//and
::SendMessage(hwnd,BFFM_SETSTATUSTEXT,0,(LPARAM)szDir);

to resolve this ambiguity.

galneweinhaw

ASKER

Thanks jkr,

working great.

How do I post a follow-up question?

My directory name is so long it is wrapping and getting hidden behind the tree-view.