An ShGetFileInfo Wrapper Class

Sample Image

Introduction

The CUseShGetFileInfo class is built around the use of ShGetFileInfo() function. It's a very simple class, but I think it can be usefull. You will not have to worry anymore about setting flags and it also works for names of files that do not exist. You don't need to know the full path for a certain file in order to obtain its icon, file type or its icon's index in the system's image list (both large icons and small icons). It also provides a function for obtaining a handle to the system's image list.

User functions

Use the GetFileIconIndex function to obtain the index of the file's associated icon in the system's image list.

int CUseShGetFileInfo::GetFileIconIndex( CString strFileName , BOOL bSmallIcon )

Use the GetDirIconIndex function to obtain the index of the folder's associated icon in the system's image list.

int CUseShGetFileInfo::GetDirIconIndex( BOOL bSmallIcon )

Use the GetFileIconHandle function to obtain a handle to the file's associated icon in the system's image list.

HICON CUseShGetFileInfo::GetFileIconHandle( CString strFileName, BOOL bSmallIcon )

Use the GetFolderIconHandle function to obtain a handle to the folder's associated icon in the system's image list.

HICON CUseShGetFileInfo::GetFolderIconHandle( BOOL bSmallIcon )

Use the GetFileType function to obtain a file's type (e.g. Winamp media file).

CString CUseShGetFileInfo::GetFileType( CString strFileName)

Use the GetSystemImageListHandle function to obtain a handle to the system's image list (large icons or small icons). Use this function to create a CImageList object to attach to a list control. After this image list is attached to the list control, use GetFileIconIndex or GetDirIconIndex to obtain the value to set for the nImage field (e.g. CListCtrl::InsertItem() function)

HIMAGELIST CUseShGetFileInfo::GetSystemImageListHandle( BOOL bSmallIcon )

License

This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

A list of licenses authors might use can be found here

About the Author

Doru Cioata

Web Developer

Romania

Member

Still a student at a computer science related faculty in the University of Craiova, Romania : Frown | :(

Hope that one day I'll graduate! Smile | :)

). Programming for last 8 years (Visual C++ for the last 2 years).

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#pragma warning (disable : 4089)

Rui Frazao

6:42 18 May '12

What is the " #pragma warning (disable : 4089) "? There are some size limit in CImageList? I am having problems for some more than 400 itens. Thanks & Regards, Rui
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My vote of 5

Thaddeus Jones

9:07 3 Nov '11

Excellent, just what I was looking for.
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how to get the icon name in the system list?

xylh2003

23:50 2 Aug '10

how to get the icon name in the system list?
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How to Find a larger icon than "large icon" on this program?

mahdigh

5:26 24 Jan '09

How to Find a larger icon than "large icon" on this program? please help me. thanks.
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.exe Icon

nns2009

1:57 29 Dec '08

How can I get application Icon(that we can see in Windows Explower) in C#?
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This is good!

vbnmjkkhgffd

19:59 2 Apr '07

Hello, This is what I am looking for! But how will I implement this in C#? Can anybody help me? The constant FILE_ATTRIBUTE_NORMAL does not exist. Please help me here. Thanks!
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FILE_ATTRIBUTE_NORMAL

mikeT1000

23:36 18 Jun '07

FILE_ATTRIBUTE_NORMAL is zero. FILE_ATTRIBUTE_NORMAL const win32file.FILE_ATTRIBUTE_NORMAL; The file has no other attributes set. This attribute is valid only if used alone. otherwise try googleing FILE_ATTRIBUTE_NORMAL , plenty of answers.
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Re: FILE_ATTRIBUTE_NORMAL

vbnmjkkhgffd

15:25 19 Jun '07

Thank you for your reply. =D
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Re: FILE_ATTRIBUTE_NORMAL

Tristan Burtenshaw

18:13 15 Feb '10

I googled "FILE_ATTRIBUTE_NORMAL" and came up with this page!
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i love it

i_a_z

2:32 28 Nov '06

This was my first time with ShGetFileInfo and this article saved me a good deal of time. So dear .S.Rod., please KMFB* ---------------------- *KMFB - Kiss my furry butt
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Large Icon problem on Win XP

Dave_isit1212

22:16 4 Apr '04

I have download the code and run it on Win XP the Larger icon is not shown clear it have black border. Do anybody notice it...can u plz help me out.
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Suggested improvements

.:fl0yd:.

0:57 12 Feb '04

UseShGetFileInfo.h:

...
#pragma warning( push )  // better yet to not change it at all
#pragma warning (disable : 4089)
 
class CUseShGetFileInfo{
private:
   CUseShGetFileInfo();   // prevent instantiation
public:
   // virtual ~CUseShGetFileInfo();   // not needed
   
   //get the system's image list
   static HIMAGELIST GetSystemImageListHandle( BOOL bSmallIcon );
   
   //get the image's index in the system's image list
   static int GetFileIconIndex( CString strFileName , BOOL bSmallIcon);
   static int GetDirIconIndex(BOOL bSmallIcon);
 
   //get a handle to the icon
   static HICON GetFileIconHandle(CString strFileName,BOOL bSmallIcon);
   static HICON GetFolderIconHandle(BOOL bSmallIcon );
 
   //get file type
   static CString GetFileType(CString strFileName);
};
 
#pragma warning( pop )   // see above

UseShGetFileInfo.cpp:

#include <shlwapi.h>   // path manipulation functions
#pragma comment( lib, "shlwapi" )   // link with respective library
#include <objbase.h>
#if defined( _MT )
  CoInitializeEx( NULL, COINIT_MULTITHREADED );
#else
  CoInitializeEx( NULL, COINIT_APARTMENTTHREADED );
#endif  // defined( _MT )
HIMAGELIST  CUseShGetFileInfo::GetSystemImageListHandle( BOOL bSmallIcon )
{
   TCHAR tcSystemRoot[MAX_PATH + 1];
   GetWindowsDirectory( tcSystemRoot, MAX_PATH );
   PathStripToRoot( tcSystemRoot );
   HIMAGELIST  hSystemImageList;
   SHFILEINFO    ssfi;
 
   if (bSmallIcon)
   {
      hSystemImageList = (HIMAGELIST)SHGetFileInfo(tcSystemRoot,
         0,
         &ssfi,
         sizeof(SHFILEINFO),
         SHGFI_SYSICONINDEX | SHGFI_SMALLICON | SHGFI_ICON);   // see MSDN
   }
   else
   {
   ...
}
 
int CUseShGetFileInfo::GetDirIconIndex(BOOL bSmallIcon )
{
   SHFILEINFO    sfi;
   if (bSmallIcon)
   {
       SHGetFileInfo(
       _T( "" ),   // make it UNICODE compatible -- empty string suffices
       FILE_ATTRIBUTE_DIRECTORY,
       &sfi, 
       sizeof(SHFILEINFO), 
       SHGFI_SYSICONINDEX | SHGFI_SMALLICON | SHGFI_USEFILEATTRIBUTES | SHGFI_ICON);   // see MSDN
   }
   else
   {
   ...
}

Apply respective changes to all other locations. In particular, supply SHGFI_ICON whenever any SHGFI_XXXICON flag is used, supply UNICODE compatible strings, even if they aren't evaluated by content, don't use a hardcoded C:\ drive.

The class cannot be instantiated anymore, which is an intended effect. The methods are available through CUseShGetFileInfo::GetSystemImageListHandle( BOOL bSmallIcon ) calls, etc., without any instance available -- that's what static members are for.

I've probably overlooked some issues, but this is a start anyway. If you have any criticism concerning the changes let's hear them.

.f

p.s.: Is there a way to apply syntax highlighting in these comments?

How to save as ico file

Anonymous

3:42 24 Jun '03

Using the icon handle which we get using SHGetFileInfo, how to save as ico file? I tried using GlobalLock(hicon) to get handle to icon bits and then tried to write it to a file. But it was failing? Is there is a way to save as a icon file using the handle HICON?
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Re: How to save as ico file

npg427

18:46 20 Apr '04

The answer to your question is CxImage class This class can create an icon file (*.ico) from HICON. You will find the "CxImage" class on this site only Good Luck.
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Network Adapter Icon

sri76

18:21 21 May '03

Is there any way to get the network adapter icon? The icons present in the device manager of windows. thanks Sri
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I think the article is great

SteveKing

7:22 7 Feb '03

and I don't bother what other here say. It was usefull to me even if I don't use the class but only some methods of it. Either way - I learnt some things about shell icons.
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Re: I think the article is great

Diarrhio

18:01 17 Mar '03

Ditto. I found this useful too. Thanks for posting it!
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Re: I think the article is great

jaramilr

14:57 12 Jun '04

Me too! I've been looking through books and websites with no luck trying to figure out how to lookup system icons. Doru's code was a great place to start.

I added a "bOpenIcon" parameter to GetFileIconIndex(), GetDirIconIndex(), GetFileIconHandle(), and GetFolderIconHandle(). If it is true, I add SHGFI_OPENICON to the flags used in the call to SHGetFileInfo(). Just a small improvement to make the tree act more like Windows Explorer.

jaramilr

Come on guys!!!

Mustafa Demirhan

4:12 7 Feb '03

I totally agree with .S.Rod. He may have used harsh words, but he is right. Don't you realize that number of such articles increase exponentially. This will make CP less useful in the future. Nobody (I guess) needs this article! Mustafa Demirhan http://www.macroangel.com Sonork ID 100.9935:zoltrix They say I'm lazy but it takes all my time
Sign In·View Thread·Permalink	1.00/5 (1 vote)

Re: Come on guys!!!

Michael P Butler

4:20 7 Feb '03

Whilst the article may not be up to much, the source may be of use to somebody. Maybe it's time to look at the Code Snippets idea again Michael The avalanche has started, it's too late for the pebbles to vote.
Sign In·View Thread·Permalink	5.00/5 (1 vote)

Re: Come on guys!!!

Jeff J

9:28 9 Feb '03

I agree. I suspect many people are upset that there are so many smaller code submissions amongst the larger articles, so the idea of Code Snippets sounds very good indeed. This article would fit nicely in such a section, and would not be receiving all the nasty comments it's getting. It would benefit CodeProject, the submitters of articles large and small, and the readers.

Code Snippets -> Let those in favour send Chris a nice email in support of it (or whatever solution they prefer). I know many already have, but an equitable solution must be found, so let's not give up.

remove this crap article from Cp. Thanks.

.S.Rod.

2:11 7 Feb '03


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Re: remove this crap article from Cp. Thanks.

Jörgen Sigvardsson

2:27 7 Feb '03

Harsh words! The code isn't not formatting my hard drive and he's not claiming his code will revolutionize the world or anything. It's just a simple wrapper which he apparently wanted to share with others.

So what if his code is less useful, you still shouldn't post messages like that. Do you have any idea how much those words can hurt? He didn't deserve those words.

My 2 cents.

--
"It is amazing how f-ing crazy I really am."

Re: remove this crap article from Cp. Thanks.

.S.Rod.

2:44 7 Feb '03

Jörgen Sigvardsson wrote:
So what if his code is less useful

You haven't looked the code. Beyond the point of being tiny and strictly useless, it's badly written.

As a side note, please find below my registry wrapper,

struct CMyCoolRegistry
{
  HKEY OpenRegistryKey(HKEY hKey,LPCTSTR lpSubKey,PHKEY phkResult)
  {
    return ::RegOpenKey(hKey,lpSubKey, phkresult);
  }
  long RegCloseKey(HKEY hKey)
  {
    return ::RegCloseKey(hKey);
  }
};

Is that powerful enough, or do you want to add more cool features? Confused | :confused:

Re: remove this crap article from Cp. Thanks.

KarstenK

3:10 7 Feb '03

If I look at your code I would judge this bad (excuse me imho "crap")

Your code:
1. class instead of struct Dead | X|

2. there is No internal functionality Dead | X|

3. use of members Confused | :confused:

4. checking of results Dead | X|

5. what is wrapped? (Nothing) Dead | X|

The code of the article:
(see upside)
1. ok
2. ok Cool | :cool:

3. no
4. no
5. ok (little) 50%

That means that your code got 0 points out of 5, the articles code 2,5 of 5 point.
You got to learn a lot maybe not only programming...

(If you were here, I would at first ask you whether you can stand the truth)

Try this @ home. (B&B)