This is a sample to demonstrate how to create a Visual Basic File AssociationPublic Const REG_SZ As Long = &H1
Public Const REG_DWORD As Long = &H4
Public Const HKEY_CLASSES_ROOT As Long = &H80000000
Public Const HKEY_CURRENT_USER As Long = &H80000001
Public Const HKEY_LOCAL_MACHINE As Long = &H80000002
Public Const HKEY_USERS As Long = &H80000003Public Const ERROR_SUCCESS As Long = 0
Public Const ERROR_BADDB As Long = 1009
Public Const ERROR_BADKEY As Long = 1010
Public Const ERROR_CANTOPEN As Long = 1011
Public Const ERROR_CANTREAD As Long = 1012
Public Const ERROR_CANTWRITE As Long = 1013
Public Const ERROR_OUTOFMEMORY As Long = 14
Public Const ERROR_INVALID_PARAMETER As Long = 87
Public Const ERROR_ACCESS_DENIED As Long = 5
Public Const ERROR_MORE_DATA As Long = 234
Public Const ERROR_NO_MORE_ITEMS As Long = 259Public Const KEY_ALL_ACCESS As Long= &H3F
Public Const REG_OPTION_NON_VOLATILE As Long = 0Public Declare Function RegCloseKey Lib "advapi32.dll" _
(ByVal hKey As Long) As LongPublic 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 Long, _
phkResult As Long, _
lpdwDisposition As Long) As LongPublic 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 LongPublic 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 LongPublic 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 Sub CreateAssociation() Dim sPath As String
'File Associations begin with a listing
'of the default extension under HKEY_CLASSES_ROOT.
'So the first step is to create that
'root extension item
CreateNewKey ".xxx", HKEY_CLASSES_ROOT
'To the extension just added, add a
'subitem where the registry will look for
'commands relating to the .xxx extension
'("MyApp.Document"). Its type is String (REG_SZ)
SetKeyValue ".xxx", "", "MyApp.Document", REG_SZ
'Create the 'MyApp.Document' item under
'HKEY_CLASSES_ROOT. This is where you'll put
'the command line to execute or other shell
'statements necessary.
CreateNewKey "MyApp.Document\shell\open\command", HKEY_CLASSES_ROOT
'Set its default item to "MyApp Document".
'This is what is displayed in Explorer against
'for files with a xxx extension. Its type is
'String (REG_SZ)
SetKeyValue "MyApp.Document", "", "MyApp Document", REG_SZ
'Finally, add the path to myapp.exe
'Remember to add %1 as the final command
'parameter to assure the app opens the passed
'command line item.
'(results in '"c:\LongPathname\Myapp.exe %1")
'Again, its type is string.
sPath = "c:\LongPathname\Myapp.exe %1"
SetKeyValue "MyApp.Document\shell\open\command", "", sPath, REG_SZ
'All done
MsgBox "The file association has been made!"
End Sub
Public Function SetValueEx(ByVal hKey As Long, _
sValueName As String, _
lType As Long, _
vValue As Variant) As Long Dim nValue As Long
Dim sValue As String
Select Case lType
Case REG_SZ
sValue = vValue & Chr$(0)
SetValueEx = RegSetValueExString(hKey, _
sValueName, _
0&, _
lType, _
sValue, _
Len(sValue))
Case REG_DWORD
nValue = vValue
SetValueEx = RegSetValueExLong(hKey, _
sValueName, _
0&, _
lType, _
nValue, _
4)
End Select
End Function
Public Sub CreateNewKey(sNewKeyName As String, _
lPredefinedKey As Long) 'handle to the new key
Dim hKey As Long
Dim result As Long
Call RegCreateKeyEx(lPredefinedKey, _
sNewKeyName, 0&, _
vbNullString, _
REG_OPTION_NON_VOLATILE, _
KEY_ALL_ACCESS, 0&, hKey, result)
Call RegCloseKey(hKey)End Sub
Public Sub SetKeyValue(sKeyName As String, _
sValueName As String, _
vValueSetting As Variant, _
lValueType As Long) 'handle of opened key
Dim hKey As Long
'open the specified key
Call RegOpenKeyEx(HKEY_CLASSES_ROOT, _
sKeyName, 0, _
KEY_ALL_ACCESS, hKey)
Call SetValueEx(hKey, _
sValueName, _
lValueType, _
vValueSetting)
Call RegCloseKey(hKey)End Sub
'--end block--'
Form Code
Add a form and a single Command button, and in the button click event simply place the word 'CreateAssociation'.
Public Const REG_DWORD As Long = &H4
Public Const HKEY_CLASSES_ROOT As Long = &H80000000
Public Const HKEY_CURRENT_USER As Long = &H80000001
Public Const HKEY_LOCAL_MACHINE As Long = &H80000002
Public Const HKEY_USERS As Long = &H80000003Public Const ERROR_SUCCESS As Long = 0
Public Const ERROR_BADDB As Long = 1009
Public Const ERROR_BADKEY As Long = 1010
Public Const ERROR_CANTOPEN As Long = 1011
Public Const ERROR_CANTREAD As Long = 1012
Public Const ERROR_CANTWRITE As Long = 1013
Public Const ERROR_OUTOFMEMORY As Long = 14
Public Const ERROR_INVALID_PARAMETER As Long = 87
Public Const ERROR_ACCESS_DENIED As Long = 5
Public Const ERROR_MORE_DATA As Long = 234
Public Const ERROR_NO_MORE_ITEMS As Long = 259Public Const KEY_ALL_ACCESS As Long= &H3F
Public Const REG_OPTION_NON_VOLATILE As Long = 0Public Declare Function RegCloseKey Lib "advapi32.dll" _
(ByVal hKey As Long) As LongPublic 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 Long, _
phkResult As Long, _
lpdwDisposition As Long) As LongPublic 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 LongPublic 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 LongPublic 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 Sub CreateAssociation() Dim sPath As String
'File Associations begin with a listing
'of the default extension under HKEY_CLASSES_ROOT.
'So the first step is to create that
'root extension item
CreateNewKey ".xxx", HKEY_CLASSES_ROOT
'To the extension just added, add a
'subitem where the registry will look for
'commands relating to the .xxx extension
'("MyApp.Document"). Its type is String (REG_SZ)
SetKeyValue ".xxx", "", "MyApp.Document", REG_SZ
'Create the 'MyApp.Document' item under
'HKEY_CLASSES_ROOT. This is where you'll put
'the command line to execute or other shell
'statements necessary.
CreateNewKey "MyApp.Document\shell\open\command", HKEY_CLASSES_ROOT
'Set its default item to "MyApp Document".
'This is what is displayed in Explorer against
'for files with a xxx extension. Its type is
'String (REG_SZ)
SetKeyValue "MyApp.Document", "", "MyApp Document", REG_SZ
'Finally, add the path to myapp.exe
'Remember to add %1 as the final command
'parameter to assure the app opens the passed
'command line item.
'(results in '"c:\LongPathname\Myapp.exe %1")
'Again, its type is string.
sPath = "c:\LongPathname\Myapp.exe %1"
SetKeyValue "MyApp.Document\shell\open\command", "", sPath, REG_SZ
'All done
MsgBox "The file association has been made!"
End Sub
Public Function SetValueEx(ByVal hKey As Long, _
sValueName As String, _
lType As Long, _
vValue As Variant) As Long Dim nValue As Long
Dim sValue As String
Select Case lType
Case REG_SZ
sValue = vValue & Chr$(0)
SetValueEx = RegSetValueExString(hKey, _
sValueName, _
0&, _
lType, _
sValue, _
Len(sValue))
Case REG_DWORD
nValue = vValue
SetValueEx = RegSetValueExLong(hKey, _
sValueName, _
0&, _
lType, _
nValue, _
4)
End Select
End Function
Public Sub CreateNewKey(sNewKeyName As String, _
lPredefinedKey As Long) 'handle to the new key
Dim hKey As Long
Dim result As Long
Call RegCreateKeyEx(lPredefinedKey, _
sNewKeyName, 0&, _
vbNullString, _
REG_OPTION_NON_VOLATILE, _
KEY_ALL_ACCESS, 0&, hKey, result)
Call RegCloseKey(hKey)End Sub
Public Sub SetKeyValue(sKeyName As String, _
sValueName As String, _
vValueSetting As Variant, _
lValueType As Long) 'handle of opened key
Dim hKey As Long
'open the specified key
Call RegOpenKeyEx(HKEY_CLASSES_ROOT, _
sKeyName, 0, _
KEY_ALL_ACCESS, hKey)
Call SetValueEx(hKey, _
sValueName, _
lValueType, _
vValueSetting)
Call RegCloseKey(hKey)End Sub
'--end block--'
Form Code
Add a form and a single Command button, and in the button click event simply place the word 'CreateAssociation'.
;处理命令行部分
sub formload()
if len(command$)=0 then goto nextpoint
;这里处理多个文件名和文件名是否正确
nextpoint:
;正常执行
end sub
其实上面部分不需要那么复杂的由VB来做,
不过要知道那个原理
如果作为需要发行的程序,修改注册表部分可以交给安装程序去做 WISE INSTALL等都可以直接完成的。