RESOLUTION
To resolve this problem, you must force the shell to update
the cache. To do this, follow these steps.
Microsoft Windows XP
Follow these steps to resolve the problem on a Windows XP-based
computer.
- Right-click your taskbar, and then click
Properties.
- Click the Start Menu tab, and then click
Start Menu.
- Click Customize, and then click
Clear List in the Programs area.
- Click OK, click Apply,
and then click OK.
Microsoft Windows 2000 and Windows XP
Follow these steps to resolve the problem on a Windows 2000-based
computer. Alternatively, you may follow these steps to update the shell cache
on a Windows XP-based computer.
- Right-click your desktop, and then click
Properties.
- Click the Settings tab, click
Medium (16 bit) in the Color quality list,
and then click Apply.
- Click Yes when you are prompted to keep
the changes made.
- Use this step for Windows-2000 based computers. In the
Colors list, click True color (24 bit) or
True Color (32 bit), and then click
Apply.
- Use this step for Windows XP-based computers. In the
Color quality list, click High (24bit) or
Highest (32 bit), and then click
Apply
- Click OK.
To resolve this problem, you can run the following Microsoft
Visual Basic for Applications (VBA) code as a full user profile to refresh the
icons.
Disclaimer Microsoft provides examples of Windows API procedures for
illustration only, without warranty either expressed or implied, including but
not limited to the implied warranties of merchantability and/or fitness for a
particular purpose. This code procedure is provided 'as is' and Microsoft does
not guarantee that it can be used in all situations. Microsoft does not support
modifications of this procedure to suit customer requirements for a particular
purpose.
---CODE START---
Option Explicit
Const WM_DISPLAYCHANGE = &H7E
Const HWND_BROADCAST = &HFFFF&
Const EWX_LOGOFF = 0
Const EWX_SHUTDOWN = 1
Const EWX_REBOOT = 2
Const EWX_FORCE = 4
Const CCDEVICENAME = 32
Const CCFORMNAME = 32
Const DM_BITSPERPEL = &H40000
Const DM_PELSWIDTH = &H80000
Const DM_PELSHEIGHT = &H100000
Const CDS_UPDATEREGISTRY = &H1
Const CDS_TEST = &H4
Const DISP_CHANGE_SUCCESSFUL = 0
Const DISP_CHANGE_RESTART = 1
Const BITSPIXEL = 12
Private Type DEVMODE
dmDeviceName As String * CCDEVICENAME
dmSpecVersion As Integer
dmDriverVersion As Integer
dmSize As Integer
dmDriverExtra As Integer
dmFields As Long
dmOrientation As Integer
dmPaperSize As Integer
dmPaperLength As Integer
dmPaperWidth As Integer
dmScale As Integer
dmCopies As Integer
dmDefaultSource As Integer
dmPrintQuality As Integer
dmColor As Integer
dmDuplex As Integer
dmYResolution As Integer
dmTTOption As Integer
dmCollate As Integer
dmFormName As String * CCFORMNAME
dmUnusedPadding As Integer
dmBitsPerPel As Integer
dmPelsWidth As Long
dmPelsHeight As Long
dmDisplayFlags As Long
dmDisplayFrequency As Long
End Type
Private Declare Function EnumDisplaySettings Lib "user32" Alias "EnumDisplaySettingsA" (ByVal lpszDeviceName As Long, ByVal iModeNum As Long, lpDevMode As Any) As Boolean
Private Declare Function ChangeDisplaySettings Lib "user32" Alias "ChangeDisplaySettingsA" (lpDevMode As Any, ByVal dwFlags As Long) As Long
Private Declare Function ExitWindowsEx Lib "user32" (ByVal uFlags As Long, ByVal dwReserved As Long) As Long
Private Declare Function GetDeviceCaps Lib "gdi32" (ByVal hdc As Long, ByVal nIndex As Long) As Long
Private Declare Function CreateDC Lib "gdi32" Alias "CreateDCA" (ByVal lpDriverName As String, ByVal lpDeviceName As String, ByVal lpOutput As String, ByVal lpInitData As Any) As Long
Private Declare Function DeleteDC Lib "gdi32" (ByVal hdc As Long) As Long
Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
Private Declare Sub Sleep Lib "kernel32" (ByVal dwMilliseconds As Long)
Dim OldX As Long, OldY As Long, nDC As Long
Sub ChangeRes(X As Long, Y As Long, Bits As Long)
Dim DevM As DEVMODE, ScInfo As Long, erg As Long, an As VbMsgBoxResult
'Get the info into DevM
erg = EnumDisplaySettings(0&, 0&, DevM)
'This is what we're going to change
DevM.dmFields = DM_PELSWIDTH Or DM_PELSHEIGHT Or DM_BITSPERPEL
DevM.dmPelsWidth = X 'ScreenWidth
DevM.dmPelsHeight = Y 'ScreenHeight
DevM.dmBitsPerPel = Bits '(can be 8, 16, 24, 32 or even 4)
'Now change the display and check if possible
erg = ChangeDisplaySettings(DevM, CDS_TEST)
End Sub
Private Sub Form_Load()
Dim nDC As Long
Me.Hide
'retrieve the screen's resolution
OldX = Screen.Width / Screen.TwipsPerPixelX
OldY = Screen.Height / Screen.TwipsPerPixelY
'Create a device context, compatible with the screen
nDC = CreateDC("DISPLAY", vbNullString, vbNullString, ByVal 0&)
'Change the screen's resolution to 8 bit
ChangeRes OldX, OldY, 8
Sleep 5000
'Change the resolution to 32 bit
ChangeRes OldX, OldY, 32
Unload Me
End Sub
---CODE END---
Note The code requires that the shell (includes the desktop) is
completely loaded.