怎样建立文件关联

[pianopan]

我做的程序，怎样和某一类型文进建立关联，

[Ninputer]

总之是操作注册表

[Ninputer]

Declare Function RegCreateKey& Lib "advapi32.DLL" Alias "RegCreateKeyA" (ByVal hKey&, ByVal lpszSubKey$, lphKey&)

Declare Function RegSetValue& Lib "advapi32.DLL" Alias "RegSetValueA" (ByVal hKey&, ByVal lpszSubKey$, ByVal fdwType&, ByVal lpszValue$, ByVal dwLength&)
Public Const ERROR_SUCCESS = 0&
Public Const ERROR_BADDB = 1&
Public Const ERROR_BADKEY = 2&
Public Const ERROR_CANTOPEN = 3&
Public Const ERROR_CANTREAD = 4&
Public Const ERROR_CANTWRITE = 5&
Public Const ERROR_OUTOFMEMORY = 6&
Public Const ERROR_INVALID_PARAMETER = 7&
Public Const ERROR_ACCESS_DENIED = 8&
Global Const HKEY_CLASSES_ROOT = &H80000000
Public Const MAX_PATH = 256&
Public Const REG_SZ = 1

Private Sub Command1_Click()

Dim sKeyName As String 'Holds Key Name in registry.
Dim sKeyValue As String 'Holds Key Value in registry.
Dim ret& 'Holds error status if any from API calls.
Dim lphKey& 'Holds created key handle from RegCreateKey.
' 'This creates a Root entry called "MyApp".
sKeyName = "MyApp" '*
sKeyValue = "My Application" '*
ret& = RegCreateKey&(HKEY_CLASSES_ROOT, sKeyName, lphKey&)
ret& = RegSetValue&(lphKey&, "", REG_SZ, sKeyValue, 0&)
' 'This creates a Root entry called .BAR associated with "MyApp".
sKeyName = ".bar" '*
sKeyValue = "MyApp" '*
ret& = RegCreateKey&(HKEY_CLASSES_ROOT, sKeyName, lphKey&)
ret& = RegSetValue&(lphKey&, "", REG_SZ, sKeyValue, 0&)
' 'This sets the command line for "MyApp".
sKeyName = "MyApp" '*
sKeyValue = "notepad.exe %1" '*
ret& = RegCreateKey&(HKEY_CLASSES_ROOT, sKeyName, lphKey&)
ret& = RegSetValue&(lphKey&, "shell\open\command", REG_SZ, sKeyValue, MAX_PATH)
End Sub

[pp616]

太烦了啊。
你先看看原来注册表里的关联。然后只要改一个键值就好了啊。