帮助我正在创建一个文字处理程序,并有一个自定义文件扩展名来保存它但是当我保存该文件并使用open选择我的程序的exe然后打开它时,程序打开时会显示空白文本我怎么能得到它在Windows资源管理器中双击打开我的文本
答案 0 :(得分:2)
在您的代码中使用以下内容(无法使其漂亮,但它可以正常工作,复制和粘贴)
Private Declare Function RegCreateKey Lib "advapi32.dll" Alias "RegCreateKeyA" (ByVal hKey As Long, ByVal lpSubKey As String, phkResult As Long) As Long
Private 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
Private Declare Function RegCloseKey Lib "advapi32.dll" (ByVal hKey As Long) As Long
Private Declare Function RegOpenKey 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
Private Declare Function RegQueryValue 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
Private Declare Function RegDeleteKey Lib "advapi32.dll" Alias "RegDeleteKeyA" (ByVal hKey As Long, ByVal lpSubKey As String) As Long
Private Const ERROR_SUCCESS = 0&
Private Const ERROR_BADDB = 1&
Private Const ERROR_BADKEY = 2&
Private Const ERROR_CANTOPEN = 3&
Private Const ERROR_CANTREAD = 4&
Private Const ERROR_CANTWRITE = 5&
Private Const ERROR_OUTOFMEMORY = 6&
Private Const ERROR_INVALID_PARAMETER = 7&
Private Const ERROR_ACCESS_DENIED = 8&
Private Const KEY_QUERY_VALUE = &H1&
Private Const KEY_CREATE_SUB_KEY = &H4&
Private Const KEY_ENUMERATE_SUB_KEYS = &H8&
Private Const KEY_NOTIFY = &H10&
Private Const KEY_SET_VALUE = &H2&
Private Const MAX_PATH = 260&
Private Const REG_DWORD As Long = 4
Private Const REG_SZ = 1
Private Const READ_CONTROL = &H20000
Private Const STANDARD_RIGHTS_READ = READ_CONTROL
Private Const STANDARD_RIGHTS_WRITE = READ_CONTROL
Private Const KEY_READ = STANDARD_RIGHTS_READ Or KEY_QUERY_VALUE Or KEY_ENUMERATE_SUB_KEYS Or KEY_NOTIFY
Private Const KEY_WRITE = STANDARD_RIGHTS_WRITE Or KEY_SET_VALUE Or KEY_CREATE_SUB_KEY
Public Const HKEY_CLASSES_ROOT = &H80000000
Public Const HKEY_CURRENT_USER = &H80000001
Public Const HKEY_LOCAL_MACHINE = &H80000002
Public Const HKEY_USERS = &H80000003
Public Sub MakeFileAssociation(Extension As String, PathToApplication As String, ApplicationName As String, Description As String, Optional FullIconPath As String)
Dim ret&
If Left(PathToApplication, 1) <> "\" Then PathToApplication = PathToApplication & "\"
'Create a Root entry called .XXX associated with application name
sKeyName = "." & Extension
sKeyValue = ApplicationName
ret& = WriteKey(HKEY_CLASSES_ROOT, sKeyName, "", sKeyValue)
'Set application key and file description
sKeyName = ApplicationName
sKeyValue = Description
ret& = WriteKey(HKEY_CLASSES_ROOT, sKeyName, "", sKeyValue)
'This sets the default icon for XXX_auto_file
If FullIconPath <> "" Then
sKeyName = ApplicationName & "\DefaultIcon"
sKeyValue = FullIconPath & ",0"
ret& = WriteKey(HKEY_CLASSES_ROOT, sKeyName, "", sKeyValue)
End If
'This sets the command line for XXX_auto_file
sKeyName = ApplicationName & "\shell\open\command"
sKeyValue = Chr(34) & PathToApplication & ApplicationName & ".exe" & Chr(34) & " %1"
ret& = WriteKey(HKEY_CLASSES_ROOT, sKeyName, "", sKeyValue)
End Sub
Public Sub DeleteFileAssociation(Extension As String)
Dim Application As String
Dim ret&
'check if filetype is registred
Application = ReadKey(HKEY_CLASSES_ROOT, "." & Extension, "", "")
If Application <> "" Then
'delete file extension
ret& = DeleteKey(HKEY_CLASSES_ROOT, "." & Extension)
'delete command lines
ret& = DeleteKey(HKEY_CLASSES_ROOT, Application)
End If
End Sub
Public Function CheckFileAssociation(ByVal Extension As String) As String
Extension = "." & Extension
'read in the program name associated with this filetype
CheckFileAssociation = ReadKey(HKEY_CLASSES_ROOT, Extension, "", "")
End Function
Public Function ReadKey(ByVal KeyName As String, ByVal SubKeyName As String, ByVal ValueName As String, ByVal DefaultValue As String) As String
Dim sBuffer As String
Dim lBufferSize As Long
Dim ret&
sBuffer = Space(255)
lBufferSize = Len(sBuffer)
ret& = RegOpenKey(KeyName, SubKeyName, 0, KEY_READ, lphKey&)
If ret& = ERROR_SUCCESS Then
ret& = RegQueryValue(lphKey&, ValueName, 0, REG_SZ, sBuffer, lBufferSize)
ret& = RegCloseKey(lphKey&)
Else
ret& = RegCloseKey(lphKey&)
End If
sBuffer = Trim(sBuffer)
If sBuffer <> "" Then
sBuffer = Left(sBuffer, Len(sBuffer) - 1)
Else
sBuffer = DefaultValue
End If
ReadKey = sBuffer
End Function
Public Function WriteKey(ByVal KeyName As String, ByVal SubKeyName As String, ByVal ValueName As String, ByVal KeyValue As String) As Long
Dim ret&
ret& = RegCreateKey&(KeyName, SubKeyName, lphKey&)
If ret& = ERROR_SUCCESS Then
ret& = RegSetValue&(lphKey&, ValueName, REG_SZ, KeyValue, 0&)
Else
ret& = RegCloseKey(lphKey&)
End If
WriteKey = ret&
End Function
Public Function DeleteKey(ByVal KeyName As String, ByVal SubKeyName As String) As Long
Dim ret&
ret& = RegOpenKey(KeyName, SubKeyName, 0, KEY_WRITE, lphKey&)
If ret& = ERROR_SUCCESS Then
ret& = RegDeleteKey(lphKey&, "") 'delete the key
ret& = RegCloseKey(lphKey&)
End If
DeleteKey = ret&
End Function
然后你可以调用它们并提供参数,它会为你创建它,删除它并检查它。至于使用扩展程序打开文件时通过应用程序处理它,您需要确保有一个命令行解析器并用%1提供它并使用该文件名在程序中打开文档。那就是它。
您可以创建一个main()并将程序启动设置为使用它而不是通常的form1和内部:
Public Sub main()
'Store command line arguments in this array
Dim sArgs() As String
Dim iLoop As Integer
'Assuming that the arguments passed from
'command line will have space in between,
'you can also use comma or other things...
sArgs = Split(Command$, " ")
For iLoop = 0 To UBound(sArgs)
'this will print the command line
'arguments that are passed from the command line
Debug.Print sArgs(iLoop)
Next
End Sub
根据您传递给程序命令的参数,您可以使用程序打开的文件路径替换调试行,并在应用程序中执行操作。