Question on SHGetFileInfo

Code:

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            SHGetFileInfo(Path.c_str(), 0, &SHFileInfo, sizeof(SHFILEINFO),
                        SHGFI_SYSICONINDEX | SHGFI_SMALLICON);

---

The above function will examine the file referenced by Path and return me information on it, such as its system image list index, (which is appropriately a folder if a directory, or a file association icon if it is a file).

I have tried testing SHFILEINFO::dwAttributes for SFGAO_FOLDER to see if this item is a folder or not, but this does not work!

I need to know how I can determine if a file referenced by SHGetFileInfo is a directory or not.

I'm making my list view so that if a user double clicks a folder, they will get a list of subdirectories of that folder. The reason why I need to test to see if the double clicked item is a folder, is because you can't list sub directories for a file now can you? If the user double clicks a file, you open it... not list its subdirectories!

Below is more code. Sorry if you don't understand something, but I use a lot of my own data structures in this sample. You should get the basic idea:

Code:

---

            SHGetFileInfo(Path.c_str(), 0, &SHFileInfo, sizeof(SHFILEINFO),
                        SHGFI_SYSICONINDEX | SHGFI_SMALLICON);

            if(SHFileInfo.dwAttributes & SFGAO_FOLDER)
            {
                NewItemInfo.Directory = true;
            }
            else
                NewItemInfo.Directory = false;

---

Thanks for any and all help!

First define
CString strFileName = (LPCTSTR) &fd.cFileName;
if (fd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
{
if ((strFileName != ".") && (strFileName != ".."))
{

//Do something
}
}
Look in winnt.h for #define FILE_ATTRIBUTE_DIRECTORY

Replace

Code:

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if(SHFileInfo.dwAttributes & SFGAO_FOLDER)

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with

Code:

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if(SHFileInfo.dwAttributes & FILE_ATTRIBUTE_DIRECTORY)

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Quote:

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Originally Posted by maggiemay

First define
CString strFileName = (LPCTSTR) &fd.cFileName;
if (fd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
{
if ((strFileName != ".") && (strFileName != ".."))
{

//Do something
}
}

---

Well...what is 'fd' in this example? There is no 'fd' in the original question...

Thank you Andreas.

I think this is interesting because MSDN suggests to use the SFGAO_ flags with dwAttributes. It says nothing about using the flags you have shown me.

I guess these are reasons why people can't rely on MSDN 100% of the time :(

Well I just applied the changes, and it still doesn't work.

Here is an update:

Code:

---


            SHGetFileInfo(Path.c_str(), 0, &SHFileInfo, sizeof(SHFILEINFO),
                        SHGFI_SYSICONINDEX | SHGFI_SMALLICON);

            if(SHFileInfo.dwAttributes & FILE_ATTRIBUTE_DIRECTORY)
                NewItemInfo.Directory = true;
            else
                NewItemInfo.Directory = false;

---

Well, actually my problem was not adding the SHGFI_ATTRIBUTES flag to my SHGetFileInfo function.

Here is the working copy:

Code:

---


            SHGetFileInfo(Path.c_str(), 0, &SHFileInfo, sizeof(SHFILEINFO),
                        SHGFI_SYSICONINDEX | SHGFI_SMALLICON | SHGFI_ATTRIBUTES);

            if(SHFileInfo.dwAttributes & SFGAO_FOLDER)
                NewItemInfo.Directory = true;
            else
                NewItemInfo.Directory = false;

---

Oh Sorry I misundstood the ? I am sorry to have bothered you,
Best Wieshes,

Don't be sorry Maggie, I appreciate your time, no matter how you answer!

Quote:

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Originally Posted by MrDoomMaster

I think this is interesting because MSDN suggests to use the SFGAO_ flags with dwAttributes. It says nothing about using the flags you have shown me.

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Well...it mentions

Quote:

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Originally Posted by MSDN

dwFileAttributes

[in] Combination of one or more file attribute flags (FILE_ATTRIBUTE_ values as defined in Winnt.h). If uFlags does not include the SHGFI_USEFILEATTRIBUTES flag, this parameter is ignored.

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It suggests to use FILE_ATTRIBUTE_ with the SHGetFileInfo function's dwAttributes parameter.

The parameter right after this one requires a SHFILEINFO structure, which is where you obtain all of the information about the file. This structure also contains a dwAttributes.

Here is MSDN's description of the dwAttributes member of the SHFILEINFO structure:

dwAttributes
Array of values that indicates the attributes of the file object. For information about these values, see the IShellFolder::GetAttributesOf method.

Whops...sorry, did not realize that you were working with the attribute within the structure....sorry for the confusion I added... :blush: