Home All Groups Group Topic Archive Search About

Get associated icon for a file

Author
24 Jan 2006 3:31 PM
techspirit
Hi all,

1) I found out from the vb.net group that it is possible to get an
associated icon for a file. My requirement is to display all programs
from the Start Menu for the user along with the associated icons. While
I am able to list the programs correctly, the icons that get displayed
alongside are the ones for the folders.
The form has listview and imagelist controls on it. I shall paste the
code here.
2) I was also wondering why this piece of code ,
Dim FileProperties As FileVersionInfo =
FileVersionInfo.GetVersionInfo(f)
                        strfDesc = FileProperties.FileDescription
returns the description for an executable file only. I am trying to
display the program description instead of the the path for the files.
Please help. Thanks in advance.
'***********************************************************************************************
Imports System.Runtime.InteropServices
Imports System.IO

Public Class Form2
    Inherits System.Windows.Forms.Form

#Region " Windows Form Designer generated code "

    Public Sub New()
        MyBase.New()

        'This call is required by the Windows Form Designer.
        InitializeComponent()

        'Add any initialization after the InitializeComponent() call

    End Sub

    'Form overrides dispose to clean up the component list.
    Protected Overloads Overrides Sub Dispose(ByVal disposing As
Boolean)
        If disposing Then
            If Not (components Is Nothing) Then
                components.Dispose()
            End If
        End If
        MyBase.Dispose(disposing)
    End Sub

    'Required by the Windows Form Designer
    Private components As System.ComponentModel.IContainer

    'NOTE: The following procedure is required by the Windows Form
Designer
    'It can be modified using the Windows Form Designer.
    'Do not modify it using the code editor.
    Friend WithEvents Button1 As System.Windows.Forms.Button
    Friend WithEvents ListView1 As System.Windows.Forms.ListView
    Friend WithEvents ImageList1 As System.Windows.Forms.ImageList
    Friend WithEvents ColumnHeader1 As
System.Windows.Forms.ColumnHeader
    <System.Diagnostics.DebuggerStepThrough()> Private Sub
InitializeComponent()
        Me.components = New System.ComponentModel.Container
        Me.Button1 = New System.Windows.Forms.Button
        Me.ListView1 = New System.Windows.Forms.ListView
        Me.ImageList1 = New
System.Windows.Forms.ImageList(Me.components)
        Me.ColumnHeader1 = New System.Windows.Forms.ColumnHeader
        Me.SuspendLayout()
        '
        'Button1
        '
        Me.Button1.Location = New System.Drawing.Point(176, 8)
        Me.Button1.Name = "Button1"
        Me.Button1.Size = New System.Drawing.Size(88, 24)
        Me.Button1.TabIndex = 0
        Me.Button1.Text = "Button1"
        '
        'ListView1
        '
        Me.ListView1.Columns.AddRange(New
System.Windows.Forms.ColumnHeader() {Me.ColumnHeader1})
        Me.ListView1.Location = New System.Drawing.Point(8, 40)
        Me.ListView1.Name = "ListView1"
        Me.ListView1.Size = New System.Drawing.Size(816, 368)
        Me.ListView1.TabIndex = 1
        Me.ListView1.View = System.Windows.Forms.View.Details
        '
        'ImageList1
        '
        Me.ImageList1.ImageSize = New System.Drawing.Size(16, 16)
        Me.ImageList1.TransparentColor =
System.Drawing.Color.Transparent
        '
        'ColumnHeader1
        '
        Me.ColumnHeader1.Width = 812
        '
        'Form2
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(872, 438)
        Me.Controls.Add(Me.ListView1)
        Me.Controls.Add(Me.Button1)
        Me.Name = "Form2"
        Me.Text = "Form2"
        Me.ResumeLayout(False)

    End Sub

#End Region
    Private Structure SHFILEINFO
        Public hIcon As IntPtr ' : icon
        Public iIcon As Integer ' : icondex
        Public dwAttributes As Integer ' : SFGAO_ flags
        <MarshalAs(UnmanagedType.ByValTStr, SizeConst:=260)> _
        Public szDisplayName As String
        <MarshalAs(UnmanagedType.ByValTStr, SizeConst:=80)> _
        Public szTypeName As String
    End Structure

    Private Declare Ansi Function SHGetFileInfo Lib "shell32.dll"
(ByVal pszPath As String, _
    ByVal dwFileAttributes As Integer, ByRef psfi As SHFILEINFO, ByVal
cbFileInfo As Integer, _
    ByVal uFlags As Integer) As IntPtr

    Private Const SHGFI_ICON = &H100
    Private Const SHGFI_SMALLICON = &H1
    Private Const SHGFI_LARGEICON = &H0         ' Large icon
    Private nIndex = 0



    Dim intI As Integer = 0



'***********************************************************************************
    'Retrieve and set the large and small ImageLists for ListView1 at
form load


'***********************************************************************************

    Sub DirSearch(ByVal sDir As String, ByVal obListView As ListView)
        Dim d As String
        Dim f As String


        '-------------------------------------------------------
        Dim hImgSmall As IntPtr  'The handle to the system image list.
        Dim hImgLarge As IntPtr  'The handle to the system image list.
        Dim fName As String      'The file name to get the icon from.
        Dim shinfo As New SHFILEINFO
        shinfo = New SHFILEINFO

        Dim SHI As New SHFILEINFO

        ListView1.SmallImageList = ImageList1
        ListView1.LargeImageList = ImageList1

        shinfo.szDisplayName = New String(Chr(0), 260)
        shinfo.szTypeName = New String(Chr(0), 80)
        '----------------------------------------------------------
        Dim lvItem As ListViewItem
'ListView item.
        Dim myIcon As System.Drawing.Icon
        Dim strfDesc As String

        Try
            For Each d In Directory.GetDirectories(sDir)
                  For Each f In Directory.GetFiles(d, "*.*")
                    intI = intI + 1
                    With obListView
                        .BeginUpdate()


''---------------------------------------------------
                        'Use this to get the small icon.
                        hImgSmall = SHGetFileInfo(fName, 0, shinfo,
Marshal.SizeOf(shinfo), _
                            SHGFI_ICON Or SHGFI_SMALLICON)
                        myIcon =
System.Drawing.Icon.FromHandle(shinfo.hIcon)


                        ImageList1.Images.Add(myIcon) 'Add icon to
imageList.


''---------------------------------------------------
                        Dim FileProperties As FileVersionInfo =
FileVersionInfo.GetVersionInfo(f)
                        strfDesc = FileProperties.FileDescription

                        .Items.Add(f, nindex)
                        nIndex = nIndex + 1
                        .EndUpdate()
                    End With
                Next
                DirSearch(d, obListView)
            Next
        Catch excpt As System.Exception
            Debug.WriteLine(excpt.Message)
        End Try
    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Button1.Click
        Dim strWinDir As String


        strWinDir =
Environment.GetFolderPath(Environment.SpecialFolder.StartMenu)

        DirSearch(strWinDir, ListView1)

    End Sub
End Class

Author
24 Jan 2006 4:24 PM
Mythran
http://www.codeguru.com/vb/gen/vb_misc/icons/article.php/c5597/

:)

Mythran

Show quoteHide quote
"techspirit" <techspi***@gmail.com> wrote in message
news:1138116667.323499.75850@g44g2000cwa.googlegroups.com...
> Hi all,
>
> 1) I found out from the vb.net group that it is possible to get an
> associated icon for a file. My requirement is to display all programs
> from the Start Menu for the user along with the associated icons. While
> I am able to list the programs correctly, the icons that get displayed
> alongside are the ones for the folders.
> The form has listview and imagelist controls on it. I shall paste the
> code here.
> 2) I was also wondering why this piece of code ,
> Dim FileProperties As FileVersionInfo =
> FileVersionInfo.GetVersionInfo(f)
>                        strfDesc = FileProperties.FileDescription
> returns the description for an executable file only. I am trying to
> display the program description instead of the the path for the files.
> Please help. Thanks in advance.
> '***********************************************************************************************
> Imports System.Runtime.InteropServices
> Imports System.IO
>
> Public Class Form2
>    Inherits System.Windows.Forms.Form
>
> #Region " Windows Form Designer generated code "
>
>    Public Sub New()
>        MyBase.New()
>
>        'This call is required by the Windows Form Designer.
>        InitializeComponent()
>
>        'Add any initialization after the InitializeComponent() call
>
>    End Sub
>
>    'Form overrides dispose to clean up the component list.
>    Protected Overloads Overrides Sub Dispose(ByVal disposing As
> Boolean)
>        If disposing Then
>            If Not (components Is Nothing) Then
>                components.Dispose()
>            End If
>        End If
>        MyBase.Dispose(disposing)
>    End Sub
>
>    'Required by the Windows Form Designer
>    Private components As System.ComponentModel.IContainer
>
>    'NOTE: The following procedure is required by the Windows Form
> Designer
>    'It can be modified using the Windows Form Designer.
>    'Do not modify it using the code editor.
>    Friend WithEvents Button1 As System.Windows.Forms.Button
>    Friend WithEvents ListView1 As System.Windows.Forms.ListView
>    Friend WithEvents ImageList1 As System.Windows.Forms.ImageList
>    Friend WithEvents ColumnHeader1 As
> System.Windows.Forms.ColumnHeader
>    <System.Diagnostics.DebuggerStepThrough()> Private Sub
> InitializeComponent()
>        Me.components = New System.ComponentModel.Container
>        Me.Button1 = New System.Windows.Forms.Button
>        Me.ListView1 = New System.Windows.Forms.ListView
>        Me.ImageList1 = New
> System.Windows.Forms.ImageList(Me.components)
>        Me.ColumnHeader1 = New System.Windows.Forms.ColumnHeader
>        Me.SuspendLayout()
>        '
>        'Button1
>        '
>        Me.Button1.Location = New System.Drawing.Point(176, 8)
>        Me.Button1.Name = "Button1"
>        Me.Button1.Size = New System.Drawing.Size(88, 24)
>        Me.Button1.TabIndex = 0
>        Me.Button1.Text = "Button1"
>        '
>        'ListView1
>        '
>        Me.ListView1.Columns.AddRange(New
> System.Windows.Forms.ColumnHeader() {Me.ColumnHeader1})
>        Me.ListView1.Location = New System.Drawing.Point(8, 40)
>        Me.ListView1.Name = "ListView1"
>        Me.ListView1.Size = New System.Drawing.Size(816, 368)
>        Me.ListView1.TabIndex = 1
>        Me.ListView1.View = System.Windows.Forms.View.Details
>        '
>        'ImageList1
>        '
>        Me.ImageList1.ImageSize = New System.Drawing.Size(16, 16)
>        Me.ImageList1.TransparentColor =
> System.Drawing.Color.Transparent
>        '
>        'ColumnHeader1
>        '
>        Me.ColumnHeader1.Width = 812
>        '
>        'Form2
>        '
>        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
>        Me.ClientSize = New System.Drawing.Size(872, 438)
>        Me.Controls.Add(Me.ListView1)
>        Me.Controls.Add(Me.Button1)
>        Me.Name = "Form2"
>        Me.Text = "Form2"
>        Me.ResumeLayout(False)
>
>    End Sub
>
> #End Region
>    Private Structure SHFILEINFO
>        Public hIcon As IntPtr ' : icon
>        Public iIcon As Integer ' : icondex
>        Public dwAttributes As Integer ' : SFGAO_ flags
>        <MarshalAs(UnmanagedType.ByValTStr, SizeConst:=260)> _
>        Public szDisplayName As String
>        <MarshalAs(UnmanagedType.ByValTStr, SizeConst:=80)> _
>        Public szTypeName As String
>    End Structure
>
>    Private Declare Ansi Function SHGetFileInfo Lib "shell32.dll"
> (ByVal pszPath As String, _
>    ByVal dwFileAttributes As Integer, ByRef psfi As SHFILEINFO, ByVal
> cbFileInfo As Integer, _
>    ByVal uFlags As Integer) As IntPtr
>
>    Private Const SHGFI_ICON = &H100
>    Private Const SHGFI_SMALLICON = &H1
>    Private Const SHGFI_LARGEICON = &H0         ' Large icon
>    Private nIndex = 0
>
>
>
>    Dim intI As Integer = 0
>
>
>
> '***********************************************************************************
>    'Retrieve and set the large and small ImageLists for ListView1 at
> form load
>
>
> '***********************************************************************************
>
>    Sub DirSearch(ByVal sDir As String, ByVal obListView As ListView)
>        Dim d As String
>        Dim f As String
>
>
>        '-------------------------------------------------------
>        Dim hImgSmall As IntPtr  'The handle to the system image list.
>        Dim hImgLarge As IntPtr  'The handle to the system image list.
>        Dim fName As String      'The file name to get the icon from.
>        Dim shinfo As New SHFILEINFO
>        shinfo = New SHFILEINFO
>
>        Dim SHI As New SHFILEINFO
>
>        ListView1.SmallImageList = ImageList1
>        ListView1.LargeImageList = ImageList1
>
>        shinfo.szDisplayName = New String(Chr(0), 260)
>        shinfo.szTypeName = New String(Chr(0), 80)
>        '----------------------------------------------------------
>        Dim lvItem As ListViewItem
> 'ListView item.
>        Dim myIcon As System.Drawing.Icon
>        Dim strfDesc As String
>
>        Try
>            For Each d In Directory.GetDirectories(sDir)
>                  For Each f In Directory.GetFiles(d, "*.*")
>                    intI = intI + 1
>                    With obListView
>                        .BeginUpdate()
>
>
> ''---------------------------------------------------
>                        'Use this to get the small icon.
>                        hImgSmall = SHGetFileInfo(fName, 0, shinfo,
> Marshal.SizeOf(shinfo), _
>                            SHGFI_ICON Or SHGFI_SMALLICON)
>                        myIcon =
> System.Drawing.Icon.FromHandle(shinfo.hIcon)
>
>
>                        ImageList1.Images.Add(myIcon) 'Add icon to
> imageList.
>
>
> ''---------------------------------------------------
>                        Dim FileProperties As FileVersionInfo =
> FileVersionInfo.GetVersionInfo(f)
>                        strfDesc = FileProperties.FileDescription
>
>                        .Items.Add(f, nindex)
>                        nIndex = nIndex + 1
>                        .EndUpdate()
>                    End With
>                Next
>                DirSearch(d, obListView)
>            Next
>        Catch excpt As System.Exception
>            Debug.WriteLine(excpt.Message)
>        End Try
>    End Sub
>
>    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As
> System.EventArgs) Handles Button1.Click
>        Dim strWinDir As String
>
>
>        strWinDir =
> Environment.GetFolderPath(Environment.SpecialFolder.StartMenu)
>
>        DirSearch(strWinDir, ListView1)
>
>    End Sub
> End Class
>
Author
24 Jan 2006 6:24 PM
techspirit
Hi,
Thanks.
I did try using the code sample from codeguru. I need to repeatedly
search all subdirectories under the Start Menu and display the programs
the current user can view/execute. Mainly, I also need to display the
result as file names or description , rather than the full paths which
these code samples result in.
Author
24 Jan 2006 7:25 PM
techspirit
Thanks .
The code at
<URL:http://dotnet.mvps.org/dotnet/faqs/?id=getfiledescription&lang=en>
, when executed , shows only the type name as and not the file name.
For e.g., if file retrieved is a shortcut to the McAfee application,
then it should display as "McAfee SpamKiller" and not as "C:\Documents
and Settings\User\Start Menu\Programs\McAfee".
Is there a way out? I would appreciate any help.
Author
24 Jan 2006 6:18 PM
Herfried K. Wagner [MVP]
"techspirit" <techspi***@gmail.com> schrieb:
> 2) I was also wondering why this piece of code ,
> Dim FileProperties As FileVersionInfo =
> FileVersionInfo.GetVersionInfo(f)
>                        strfDesc = FileProperties.FileDescription
> returns the description for an executable file only. I am trying to
> display the program description instead of the the path for the files.

Determining the description of a file's file type
<URL:http://dotnet.mvps.org/dotnet/faqs/?id=getfiledescription&lang=en>

--
M S   Herfried K. Wagner
M V P  <URL:http://dotnet.mvps.org/>
V B   <URL:http://classicvb.org/petition/>