How to change a current directory from a CFileDialog-based class after the call to DoModal()?

Question

Hello everyone!

I am using VS2008/C++ on Windows XP platform.

I have a class derived from CFileDialog. I have added a combobox to this dialog, which containg a list of the most recently used directories - to simplify the navigation. After a user makes his choice, the dialog has to switch to a selected location. How to force the dialog to do it?

Thank you in advance,

Mike

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Mike Faynberg

Answer 1

No API exists. You can send the undocumented WM_USER+7 to get a IShellBrowser interface, but that may break in a Windows Update.

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Answer 2

Sheng Jiang,

thank you so much!

It is a bit disappointing... I wanted actually to create something like MRU but for locations, not for files... Anyway - I have never used the IShellBrowser interface before. Could you refer me to an example: how to change a working directory in the case like this?

Best regards,

Mike

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Mike Faynberg

Answer 3

Search for IShellBrowser cfiledialog.

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Answer 4

Hello Mike,

>Could you refer me to an example: how to change a working directory in the case like this?

Please take a look at the following article.
http://www.codeproject.com/KB/dialog/select_all_button.aspx

It shows us how to add a select all button to CFileDialog with the help of IShellBrowser interface.

Besides Sheng's suggestion, another idea is add the recent location to the Favorite Links of the CFileDialog. For example
http://www.insidercoding.com/post/2008/07/16/Tutorial-Adding-a-Custom-Place-to-CFileDialog.aspx

Thanks,
Rong-Chun Zhang
MSDN Subscriber Support in Forum
If you have any feedback on our support, please contact [e-mail]

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Answer 5

Hello Sheng Jiang and Rong-Chun Zgang,

I greatly appreciate your input.

Actually I figured it out myself... It looks like follows:

/*
#define WM_UNDOCUMENTED (WM_USER + 7)
*/
IShellBrowser *pSB = (IShellBrowser *)GetParent()->SendMessage( WM_UNDOCUMENTED, 0, 0 );
if( pSB != 0 )
{
        CStringW sw( strNewDirectory );
	PIDLIST_ABSOLUTE pidl;
	DWORD flags = SFGAO_FOLDER;
	HRESULT hr = SHILCreateFromPath( sw, &pidl, &flags );
	ASSERT( hr == S_OK );
	flags = SBSP_SAMEBROWSER | SBSP_DEFMODE | SBSP_ABSOLUTE;
	hr = pSB->BrowseObject( pidl, flags );
		                                // The call works fine, but returns
		                                // ... S_FALSE
//	ASSERT( hr == S_OK );
}

The only minor problem - like one can see from comments - is that the call to BrowseObject() returns S_FALSE, despite that works fine.

Why? Any misunderstanding on my side regarding flags definition, or something else?

Best regards and thank you once more,

Mike

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Mike Faynberg

Answer 6

use SUCCEEDED(hr) or FAILED(hr) to determine success or failure. Error codes generally begins with E_.

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Answer 7

Hello Sheng Jiang,

thank you for your help! It is OK now. Hopefully even if Microsoft breaks this undocumented option later, they will give us something different in order to keep the functionality

Best regards,

MIke

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Mike Faynberg

Answer 8

Hello Mike,

Is the issue resloved? If there is anything we can help, welcome to post here.

Thanks,
Rong-Chun Zhang
MSDN Subscriber Support in Forum
If you have any feedback on our support, please contact [e-mail]

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Answer 9

Hi Rong-Chun Znang,

Yes it is resolved - at least until it breaks (hopefully not!) after some Microsoft update.

Thank you so much!

Mike

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Mike Faynberg