www.pudn.com > VBkongjian.rar > API.bas


Attribute VB_Name = "API" 
Public Declare Function BitBlt Lib "gdi32" (ByVal hDestDC As Long, ByVal X As Long, ByVal Y As Long, ByVal nWidth As Long, ByVal nHeight As Long, ByVal hSrcDC As Long, ByVal xSrc As Long, ByVal ySrc As Long, ByVal dwRop As Long) As Long 
Public Declare Function DrawIconEx Lib "user32" (ByVal hDC As Long, ByVal xLeft As Long, ByVal yTop As Long, ByVal hIcon As Long, ByVal cxWidth As Long, ByVal cyWidth As Long, ByVal istepIfAniCur As Long, ByVal hbrFlickerFreeDraw As Long, ByVal diFlags As Long) As Long 
Public Declare Function DrawIcon Lib "user32" (ByVal hDC As Long, ByVal X As Long, ByVal Y As Long, ByVal hIcon As Long) As Long 
Public Declare Function CreateBitmap Lib "gdi32" (ByVal nWidth As Long, ByVal nHeight As Long, ByVal nPlanes As Long, ByVal nBitCount As Long, lpBits As Any) As Long 
Public Declare Function SetBkColor Lib "gdi32" (ByVal hDC As Long, ByVal crColor As Long) As Long 
Public Declare Function GetDC Lib "user32" (ByVal hWnd As Long) As Long 
Public Declare Function SetWindowPos Lib "user32" (ByVal hWnd As Long, ByVal hWndInsertAfter As Long, ByVal X As Long, ByVal Y As Long, ByVal cx As Long, ByVal cy As Long, ByVal wFlags As Long) As Long 
Private OldWindowProc As Long 
Private TheForm As Form 
Private TheMenu As Menu 
 
Public Declare Function CallWindowProc Lib "user32" Alias "CallWindowProcA" (ByVal lpPrevWndFunc As Long, ByVal hWnd As Long, ByVal Msg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long 
Public Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA" (ByVal hWnd As Long, ByVal nIndex As Long, ByVal dwNewLong As Long) As Long 
Private Declare Function Shell_NotifyIcon Lib "shell32.dll" Alias "Shell_NotifyIconA" (ByVal dwMessage As Long, lpData As NOTIFYICONDATA) As Long 
 
Private Const WM_USER = &H400 
Private Const WM_LBUTTONUP = &H202 
Private Const WM_MBUTTONUP = &H208 
Private Const WM_RBUTTONUP = &H205 
Private Const TRAY_CALLBACK = (WM_USER + 1001&) 
Private Const GWL_WNDPROC = (-4) 
Private Const GWL_USERDATA = (-21) 
Private Const NIF_ICON = &H2 
Private Const NIF_TIP = &H4 
Private Const NIM_ADD = &H0 
Private Const NIF_MESSAGE = &H1 
Private Const NIM_MODIFY = &H1 
Private Const NIM_DELETE = &H2 
 
Private Type NOTIFYICONDATA 
    cbSize As Long 
    hWnd As Long 
    uID As Long 
    uFlags As Long 
    uCallbackMessage As Long 
    hIcon As Long 
    szTip As String * 64 
End Type 
 
Private TheData As NOTIFYICONDATA 
Option Explicit 
 
Private Declare Function GetVolumeInformation Lib _ 
"kernel32.dll" Alias "GetVolumeInformationA" (ByVal _ 
lpRootPathName As String, ByVal lpVolumeNameBuffer As _ 
String, ByVal nVolumeNameSize As Integer, _ 
lpVolumeSerialNumber As Long, lpMaximumComponentLength _ 
As Long, lpFileSystemFlags As Long, ByVal _ 
lpFileSystemNameBuffer As String, ByVal _ 
nFileSystemNameSize As Long) As Long 
Type ACL 
        AclRevision As Byte 
        Sbz1 As Byte 
        AclSize As Integer 
        AceCount As Integer 
        Sbz2 As Integer 
End Type 
 
Type SECURITY_DESCRIPTOR 
        Revision As Byte 
        Sbz1 As Byte 
        Control As Long 
        Owner As Long 
        Group As Long 
        Sacl As ACL 
        Dacl As ACL 
End Type 
 
Type SECURITY_ATTRIBUTES 
        nLength As Long 
        lpSecurityDescriptor As Long 
        bInheritHandle As Long 
End Type 
 
Type FILETIME 
        dwLowDateTime As Long 
        dwHighDateTime As Long 
End Type 
 
Public Const HKEY_CLASSES_ROOT = &H80000000 
Public Const HKEY_CURRENT_CONFIG = &H80000005 
Public Const HKEY_CURRENT_USER = &H80000001 
Public Const HKEY_DYN_DATA = &H80000006 
Public Const HKEY_LOCAL_MACHINE = &H80000002 
Public Const HKEY_PERFORMANCE_DATA = &H80000004 
Public Const HKEY_USERS = &H80000003 
 
Public Const ERROR_SUCCESS = 0& 
Global Const ERROR_NONE = 0 
Global Const ERROR_BADDB = 1 
Global Const ERROR_BADKEY = 2 
Global Const ERROR_CANTOPEN = 3 
Global Const ERROR_CANTREAD = 4 
Global Const ERROR_CANTWRITE = 5 
Global Const ERROR_OUTOFMEMORY = 6 
Global Const ERROR_INVALID_PARAMETER = 7 
Global Const ERROR_ACCESS_DENIED = 8 
Global Const ERROR_INVALID_PARAMETERS = 87 
Global Const ERROR_NO_MORE_ITEMS = 259 
 
Public Const REG_BINARY = 3 
Public Const REG_CREATED_NEW_KEY = &H1 
Public Const REG_DWORD = 4 
Public Const REG_DWORD_BIG_ENDIAN = 5 
Public Const REG_DWORD_LITTLE_ENDIAN = 4 
Public Const REG_EXPAND_SZ = 2 
Public Const REG_FULL_RESOURCE_DESCRIPTOR = 9 
Public Const REG_LINK = 6 
Public Const REG_MULTI_SZ = 7 
Public Const REG_NONE = 0 
Public Const REG_NOTIFY_CHANGE_ATTRIBUTES = &H2 
Public Const REG_NOTIFY_CHANGE_LAST_SET = &H4 
Public Const REG_NOTIFY_CHANGE_NAME = &H1 
Public Const REG_NOTIFY_CHANGE_SECURITY = &H8 
Public Const REG_OPENED_EXISTING_KEY = &H2 
Public Const REG_OPTION_BACKUP_RESTORE = 4 
Public Const REG_OPTION_CREATE_LINK = 2 
Public Const REG_OPTION_NON_VOLATILE = 0 
Public Const REG_OPTION_RESERVED = 0 
Public Const REG_OPTION_VOLATILE = 1 
Public Const REG_REFRESH_HIVE = &H2 
Public Const REG_RESOURCE_LIST = 8 
Public Const REG_RESOURCE_REQUIREMENTS_LIST = 10 
Public Const REG_SZ = 1 
Public Const REG_WHOLE_HIVE_VOLATILE = &H1 
Public Const REG_LEGAL_CHANGE_FILTER = (REG_NOTIFY_CHANGE_NAME Or REG_NOTIFY_CHANGE_ATTRIBUTES Or REG_NOTIFY_CHANGE_LAST_SET Or REG_NOTIFY_CHANGE_SECURITY) 
Public Const REG_LEGAL_OPTION = (REG_OPTION_RESERVED Or REG_OPTION_NON_VOLATILE Or REG_OPTION_VOLATILE Or REG_OPTION_CREATE_LINK Or REG_OPTION_BACKUP_RESTORE) 
 
Public Const READ_CONTROL = &H20000 
Public Const STANDARD_RIGHTS_ALL = &H1F0000 
Public Const STANDARD_RIGHTS_READ = (READ_CONTROL) 
Public Const SYNCHRONIZE = &H100000 
Public Const STANDARD_RIGHTS_WRITE = (READ_CONTROL) 
 
Public Const KEY_CREATE_LINK = &H20 
Public Const KEY_CREATE_SUB_KEY = &H4 
Public Const KEY_ENUMERATE_SUB_KEYS = &H8 
Public Const KEY_EVENT = &H1 
 
Public Const KEY_NOTIFY = &H10 
Public Const KEY_QUERY_VALUE = &H1 
Public Const KEY_READ = ((STANDARD_RIGHTS_READ Or KEY_QUERY_VALUE Or KEY_ENUMERATE_SUB_KEYS Or KEY_NOTIFY) And (Not SYNCHRONIZE)) 
Public Const KEY_SET_VALUE = &H2 
Public Const KEY_WRITE = ((STANDARD_RIGHTS_WRITE Or KEY_SET_VALUE Or KEY_CREATE_SUB_KEY) And (Not SYNCHRONIZE)) 
 
Public Const KEY_EXECUTE = (KEY_READ) 
Public Const KEY_ALL_ACCESS = ((STANDARD_RIGHTS_ALL Or KEY_QUERY_VALUE Or KEY_SET_VALUE Or KEY_CREATE_SUB_KEY Or KEY_ENUMERATE_SUB_KEYS Or KEY_NOTIFY Or KEY_CREATE_LINK) And (Not SYNCHRONIZE)) 
 
 
 
Declare Function RegCloseKey Lib "advapi32.dll" (ByVal hKey As Long) As Long 
Declare Function RegCreateKey Lib "advapi32.dll" Alias "RegCreateKeyA" (ByVal hKey As Long, ByVal lpSubKey As String, phkResult As Long) As Long 
Declare Function RegCreateKeyEx Lib "advapi32.dll" Alias "RegCreateKeyExA" (ByVal hKey As Long, ByVal lpSubKey As String, ByVal Reserved As Long, ByVal lpClass As String, ByVal dwOptions As Long, ByVal samDesired As Long, ByVal lpSecurityAttributes As Any, phkResult As Long, lpdwDisposition As Long) As Long 
Declare Function RegDeleteKey Lib "advapi32.dll" Alias "RegDeleteKeyA" (ByVal hKey As Long, ByVal lpSubKey As String) As Long 
Declare Function RegDeleteValue Lib "advapi32.dll" Alias "RegDeleteValueA" (ByVal hKey As Long, ByVal lpValueName As String) As Long 
Declare Function RegEnumKey Lib "advapi32.dll" Alias "RegEnumKeyA" (ByVal hKey As Long, ByVal dwIndex As Long, ByVal lpName As String, ByVal cbName As Long) As Long 
Declare Function RegEnumKeyEx Lib "advapi32.dll" Alias "RegEnumKeyExA" (ByVal hKey As Long, ByVal dwIndex As Long, ByVal lpName As String, lpcbName As Long, lpReserved As Long, ByVal lpClass As String, lpcbClass As Long, lpftLastWriteTime As FILETIME) As Long 
Declare Function RegEnumValue Lib "advapi32.dll" Alias "RegEnumValueA" (ByVal hKey As Long, ByVal dwIndex As Long, ByVal lpValueName As String, lpcbValueName As Long, lpReserved As Long, lpType As Long, lpData As Byte, lpcbData As Long) As Long 
Declare Function RegFlushKey Lib "advapi32.dll" (ByVal hKey As Long) As Long 
Declare Function RegGetKeySecurity Lib "advapi32.dll" (ByVal hKey As Long, ByVal SecurityInformation As Long, pSecurityDescriptor As SECURITY_DESCRIPTOR, lpcbSecurityDescriptor As Long) As Long 
Declare Function RegLoadKey Lib "advapi32.dll" Alias "RegLoadKeyA" (ByVal hKey As Long, ByVal lpSubKey As String, ByVal lpFile As String) As Long 
Declare Function RegNotifyChangeKeyValue Lib "advapi32.dll" (ByVal hKey As Long, ByVal bWatchSubtree As Long, ByVal dwNotifyFilter As Long, ByVal hEvent As Long, ByVal fAsynchronus As Long) As Long 
Declare Function RegOpenKey Lib "advapi32.dll" Alias "RegOpenKeyA" (ByVal hKey As Long, ByVal lpSubKey As String, phkResult As Long) As Long 
Declare Function RegOpenKeyEx Lib "advapi32.dll" Alias "RegOpenKeyExA" (ByVal hKey As Long, ByVal lpSubKey As String, ByVal ulOptions As Long, ByVal samDesired As Long, phkResult As Long) As Long 
Declare Function RegQueryInfoKey Lib "advapi32.dll" Alias "RegQueryInfoKeyA" (ByVal hKey As Long, ByVal lpClass As String, lpcbClass As Long, lpReserved As Long, lpcSubKeys As Long, lpcbMaxSubKeyLen As Long, lpcbMaxClassLen As Long, lpcValues As Long, lpcbMaxValueNameLen As Long, lpcbMaxValueLen As Long, lpcbSecurityDescriptor As Long, lpftLastWriteTime As FILETIME) As Long 
Declare Function RegQueryValue Lib "advapi32.dll" Alias "RegQueryValueA" (ByVal hKey As Long, ByVal lpSubKey As String, ByVal lpValue As String, lpcbValue As Long) As Long 
Declare Function RegQueryValueEx Lib "advapi32.dll" Alias "RegQueryValueExA" (ByVal hKey As Long, ByVal lpValueName As String, ByVal lpReserved As Long, lpType As Long, lpData As Any, lpcbData As Long) As Long 
Declare Function RegRestoreKey Lib "advapi32.dll" Alias "RegRestoreKeyA" (ByVal hKey As Long, ByVal lpFile As String, ByVal dwFlags As Long) As Long 
Declare Function RegSaveKey Lib "advapi32.dll" Alias "RegSaveKeyA" (ByVal hKey As Long, ByVal lpFile As String, lpSecurityAttributes As SECURITY_ATTRIBUTES) As Long 
Declare Function RegSetValue Lib "advapi32.dll" Alias "RegSetValueA" (ByVal hKey As Long, ByVal lpSubKey As String, ByVal dwType As Long, ByVal lpData As String, ByVal cbData As Long) As Long 
Declare Function RegSetValueEx Lib "advapi32.dll" Alias "RegSetValueExA" (ByVal hKey As Long, ByVal lpValueName As String, ByVal Reserved As Long, ByVal dwType As Long, lpData As Any, ByVal cbData As Long) As Long 
Declare Function RegUnLoadKey Lib "advapi32.dll" Alias "RegUnLoadKeyA" (ByVal hKey As Long, ByVal lpSubKey As String) As Long 
 
Declare Function RegQueryValueExString Lib "advapi32.dll" Alias "RegQueryValueExA" (ByVal hKey As Long, ByVal lpValueName As String, ByVal lpReserved As Long, lpType As Long, ByVal lpData As String, lpcbData As Long) As Long 
Declare Function RegQueryValueExLong Lib "advapi32.dll" Alias "RegQueryValueExA" (ByVal hKey As Long, ByVal lpValueName As String, ByVal lpReserved As Long, lpType As Long, lpData As Long, lpcbData As Long) As Long 
Declare Function RegQueryValueExNULL Lib "advapi32.dll" Alias "RegQueryValueExA" (ByVal hKey As Long, ByVal lpValueName As String, ByVal lpReserved As Long, lpType As Long, ByVal lpData As Long, lpcbData As Long) As Long 
Declare Function RegSetValueExString Lib "advapi32.dll" Alias "RegSetValueExA" (ByVal hKey As Long, ByVal lpValueName As String, ByVal Reserved As Long, ByVal dwType As Long, ByVal lpValue As String, ByVal cbData As Long) As Long 
Declare Function RegSetValueExLong Lib "advapi32.dll" Alias "RegSetValueExA" (ByVal hKey As Long, ByVal lpValueName As String, ByVal Reserved As Long, ByVal dwType As Long, lpValue As Long, ByVal cbData As Long) As Long 
 
Public Function EnumKey(hMainKey As Long, sSubKey As String, lIndex As Long, lpStr As String) As Boolean 
'EnumKey函数打开有hMainKey主键和sSubKey子键指定的注册键,lIndex为要查询的子键值 
'的索引,lpStr为放置子键值的字符串缓冲,如果要查询一个键值的所有子键,只要将lIndex 
'首先设置为0,然后将lIndex递增1再调用EnumKey函数,直到函数返回0为止 
    Dim hKey As Long    '打开键的句柄 
    Dim I As Long 
     
    If RegOpenKey(hMainKey, sSubKey, hKey) = ERROR_SUCCESS Then 
        lpStr = Space(255) + Chr(0) 
        Debug.Print Len(lpStr) 
        If RegEnumKey(hKey, lIndex, lpStr, Len(lpStr)) = ERROR_SUCCESS Then 
            EnumKey = True 
        Else 
            EnumKey = False 
        End If 
    Else 
        EnumKey = False 
    End If 
    RegCloseKey hKey 
End Function 
Public Function DeleteKey(lPredefinedKey As Long, sKeyName As String) 
'DeleteKey函数打开有hPredfineKeyKey主键和sKeyName子键指定的注册键,再将此子键删除 
    Dim lRetVal As Long 
    Dim hKey As Long         '打开键的句柄 
         
    lRetVal = RegOpenKeyEx(lPredefinedKey, sKeyName, 0, KEY_ALL_ACCESS, hKey) 
    lRetVal = RegDeleteKey(lPredefinedKey, sKeyName) 
    RegCloseKey (hKey) 
End Function 
 
Public Function DeleteValue(lPredefinedKey As Long, sKeyName As String, sValueName As String) 
'DeleteValue函数删除一个值 
    Dim lRetVal As Long 
    Dim hKey As Long     '打开键的句柄 
     
    lRetVal = RegOpenKeyEx(lPredefinedKey, sKeyName, 0, KEY_ALL_ACCESS, hKey) 
    lRetVal = RegDeleteValue(hKey, sValueName) 
    RegCloseKey (hKey) 
End Function 
 
Public Function SetValueEx(ByVal hKey As Long, sValueName As String, lType As Long, vValue As Variant) As Long 
'SetValueEx函数设置值 
'如果参数为REG_SZ则设置的值为字符串 
'如果参数为REG_WORD设置的值为整数值 
    Dim lValue As Long 
    Dim sValue As String 
 
    Select Case lType 
        Case REG_SZ 
            sValue = vValue 
            SetValueEx = RegSetValueExString(hKey, sValueName, 0&, lType, sValue, Len(sValue)) 
        Case REG_DWORD 
            lValue = vValue 
            SetValueEx = RegSetValueExLong(hKey, sValueName, 0&, lType, lValue, 4) 
        End Select 
End Function 
 
Function QueryValueEx(ByVal lhKey As Long, ByVal szValueName As String, vValue As Variant) As Long 
    Dim cch As Long 
    Dim lrc As Long 
    Dim lType As Long 
    Dim lValue As Long 
    Dim sValue As String 
 
    On Error GoTo QueryValueExError 
 
    lrc = RegQueryValueExNULL(lhKey, szValueName, 0&, lType, 0&, cch) 
    If lrc <> ERROR_NONE Then Error 5 
 
    Select Case lType 
        '查询字符串值 
        Case REG_SZ: 
            sValue = String(cch, 0) 
            lrc = RegQueryValueExString(lhKey, szValueName, 0&, lType, sValue, cch) 
            If lrc = ERROR_NONE Then 
                vValue = Left$(sValue, cch) 
            Else 
                vValue = Empty 
            End If 
 
        '查询整数值 
        Case REG_DWORD: 
            lrc = RegQueryValueExLong(lhKey, szValueName, 0&, lType, lValue, cch) 
            If lrc = ERROR_NONE Then vValue = lValue 
        Case Else 
            lrc = -1 
    End Select 
 
QueryValueExExit: 
 
    QueryValueEx = lrc 
    Exit Function 
 
QueryValueExError: 
 
    Resume QueryValueExExit 
 
End Function 
Public Function CreateNewKey(lPredefinedKey As Long, sNewKeyName As String) 
' Description: 
' 这个函数建立一个新的键 
    Dim hNewKey As Long         '打开新键的句柄 
    Dim lRetVal As Long 
     
    lRetVal = RegCreateKeyEx(lPredefinedKey, sNewKeyName, 0&, vbNullString, REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, 0&, hNewKey, lRetVal) 
    RegCloseKey (hNewKey) 
End Function 
 
Public Function SetKeyValue(lPredefinedKey As Long, sKeyName As String, sValueName As String, vValueSetting As Variant, lValueType As Long) 
       Dim lRetVal As Long 
       Dim hKey As Long         '打开键的句柄 
 
       lRetVal = RegOpenKeyEx(lPredefinedKey, sKeyName, 0, KEY_ALL_ACCESS, hKey) 
       lRetVal = SetValueEx(hKey, sValueName, lValueType, vValueSetting) 
       RegCloseKey (hKey) 
End Function 
 
Public Function QueryValue(lPredefinedKey As Long, sKeyName As String, sValueName As String) 
       Dim lRetVal As Long 
       Dim hKey As Long         '打开键的句柄 
       Dim vValue As Variant      'setting of queried value 
 
 
       lRetVal = RegOpenKeyEx(lPredefinedKey, sKeyName, 0, KEY_ALL_ACCESS, hKey) 
       lRetVal = QueryValueEx(hKey, sValueName, vValue) 
       QueryValue = vValue 
       RegCloseKey (hKey) 
End Function 
 
 
Public Function GetSerialNumber(strDrive As String) As Long 
Dim SerialNum As Long 
Dim Res As Long 
Dim Temp1 As String 
Dim Temp2 As String 
Temp1 = String$(255, Chr$(0)) 
Temp2 = String$(255, Chr$(0)) 
Res = GetVolumeInformation(strDrive, Temp1, _ 
Len(Temp1), SerialNum, 0, 0, Temp2, Len(Temp2)) 
GetSerialNumber = SerialNum 
End Function 
 
' ********************************************* 
' The replacement window proc. 
' ********************************************* 
Private Function NewWindowProc(ByVal hWnd As Long, ByVal Msg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long 
    If Msg = TRAY_CALLBACK Then 
        ' The user clicked on the tray icon. 
        ' Look for click events. 
        If lParam = WM_LBUTTONUP Then 
            ' On left click, show the form. 
            'If TheForm.WindowState = vbMinimized Then _ 
               ' TheForm.WindowState = TheForm.LastState 
            TheForm.SetFocus 
            Exit Function 
        End If 
        If lParam = WM_RBUTTONUP Then 
            ' On right click, show the menu. 
            TheForm.PopupMenu TheMenu 
            Exit Function 
        End If 
    End If 
    If Msg = WM_SYSCOMMAND Then 
        If wParam = mAddItemId Then 
            frmAbout.Show 1 
            Exit Function 
        End If 
    End If 
 
    ' Send other messages to the original 
    ' window proc. 
    NewWindowProc = CallWindowProc( _ 
        OldWindowProc, hWnd, Msg, _ 
        wParam, lParam) 
End Function 
' ********************************************* 
' Add the form's icon to the tray. 
' ********************************************* 
Public Sub AddToTrayIcon(Frm As Form, mnu As Menu) 
    ' ShowInTaskbar must be set to False at 
    ' design time because it is read-only at 
    ' run time. 
 
    ' Save the form and menu for later use. 
    Set TheForm = Frm 
    Set TheMenu = mnu 
     
    ' Install the new WindowProc. 
    OldWindowProc = SetWindowLong(Frm.hWnd, _ 
        GWL_WNDPROC, AddressOf NewWindowProc) 
     
    ' Install the form's icon in the tray. 
    With TheData 
        .uID = 0 
        .hWnd = Frm.hWnd 
        .cbSize = Len(TheData) 
        .hIcon = Frm.Icon.Handle 
        .uFlags = NIF_ICON 
        .uCallbackMessage = TRAY_CALLBACK 
        .uFlags = .uFlags Or NIF_MESSAGE 
        .cbSize = Len(TheData) 
    End With 
    Shell_NotifyIcon NIM_ADD, TheData 
End Sub 
' ********************************************* 
' Remove the icon from the system tray. 
' ********************************************* 
Public Sub RemoveFromTray() 
    ' Remove the icon from the tray. 
    With TheData 
        .uFlags = 0 
    End With 
    Shell_NotifyIcon NIM_DELETE, TheData 
     
    ' Restore the original window proc. 
    SetWindowLong TheForm.hWnd, GWL_WNDPROC, _ 
        OldWindowProc 
End Sub 
' ********************************************* 
' Set a new tray tip. 
' ********************************************* 
Public Sub SetTrayTip(tip As String) 
    With TheData 
        .szTip = tip & vbNullChar 
        .uFlags = NIF_TIP 
    End With 
    Shell_NotifyIcon NIM_MODIFY, TheData 
End Sub 
' ********************************************* 
' Set a new tray icon. 
' ********************************************* 
Public Sub SetTrayIcon(Pic As Picture) 
    ' Do nothing if the picture is not an icon. 
    If Pic.Type <> vbPicTypeIcon Then Exit Sub 
 
    ' Update the tray icon. 
    With TheData 
        .hIcon = Pic.Handle 
        .uFlags = NIF_ICON 
    End With 
    Shell_NotifyIcon NIM_MODIFY, TheData 
End Sub