Como posso saber que um diretório é o bin Reciclagem em VB6?
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16-09-2019 - |
Pergunta
Eu estou tentando porta o código este artigo para VB6, mas eu estou experimentando falhando. Eu estou certo de que meu erro está na minha chamada para SHBindToParent
( MSDN entrada ) desde SHParseDisplayName
está retornando 0 (S_OK
) e ppidl
está sendo definido. Admito meu mecanismo de definir o riid (eu usei um tipo equivalente, uma UUID
) é muito feio, mas eu acho mais provável que eu estou fazendo algo de errado com psf
.
Private Declare Function SHParseDisplayName Lib "shell32" (ByVal pszName As Long, ByVal IBindCtx As Long, ByRef ppidl As ITEMIDLIST, sfgaoIn As Long, sfgaoOut As Long) As Long
Private Declare Function SHBindToParent Lib "shell32" (ByVal ppidl As Long, ByRef shellguid As UUID, ByVal psf As Long, ByVal ppidlLast As Long) As Long
Private Sub Main()
Dim hr As Long
Dim ppidl As ITEMIDLIST
Dim topo As String
Dim psf As IShellFolder
Dim pidlChild As ITEMIDLIST
topo = "c:\tmp\" '"//This VB comment is here to make SO's rendering look nicer.
Dim iid_shellfolder As UUID
iid_shellfolder.Data1 = 136422
iid_shellfolder.Data2 = 0
iid_shellfolder.Data3 = 0
iid_shellfolder.Data4(0) = 192
iid_shellfolder.Data4(7) = 70
hr = SHParseDisplayName(StrPtr(topo), 0, ppidl, 0, 0)
Debug.Print hr, Hex(hr)
hr = SHBindToParent(VarPtr(ppidl), iid_shellfolder, VarPtr(psf), VarPtr(pidlChild)) 'Crashes here
End Sub
Solução
Eu acredito que a sua chamada para SHBindToParent está falhando, porque você precisa passar longs, em seguida, usar os ponteiros retornados para copiar a memória em seus tipos. Eu encontrei vários posts quando eu pesquisei a função SHBindToParent que mencionado suporte OS, principalmente 95 e 98. Quando eu tentei no XP SP3 Eu tenho um erro "Nenhuma interface suportada".
Aqui está como eu modificar seu código para passar o GPF:
Option Explicit
Private Declare Function SHParseDisplayName Lib "shell32" (ByVal pszName As Long, ByVal IBindCtx As Long, ByRef ppidl As Long, ByVal sfgaoIn As Long, ByRef sfgaoOut As Long) As Long
Private Declare Function SHBindToParent Lib "shell32" (ByVal ppidl As Any, ByRef shellguid As UUID, ByRef psf As Any, ByRef ppidlLast As Any) As Long
Private Type SHITEMID
cb As Long
abID As Byte
End Type
Private Type ITEMIDLIST
mkid As SHITEMID
End Type
Private Type UUID
Data1 As Long
Data2 As Integer
Data3 As Integer
Data4(7) As Byte
End Type
Private Sub Command1_Click()
Dim hr As Long
Dim ppidl As Long
Dim topo As String
Dim psf As IShellFolder
Dim pidlChild As Long
Dim iid_shellfolder As UUID
Dim lpIDList2 As Long
topo = "C:\Temp"
' create a uuid = {B7534046-3ECB-4C18-BE4E-64CD4CB7D6AC}'
iid_shellfolder.Data1 = &HB7534046
iid_shellfolder.Data2 = &H3ECB
iid_shellfolder.Data3 = &H4C18
iid_shellfolder.Data4(0) = 190
iid_shellfolder.Data4(1) = 78
iid_shellfolder.Data4(2) = 100
iid_shellfolder.Data4(3) = 205
iid_shellfolder.Data4(4) = 76
iid_shellfolder.Data4(5) = 183
iid_shellfolder.Data4(6) = 214
iid_shellfolder.Data4(7) = 172
hr = SHParseDisplayName(StrPtr(topo), ByVal 0&, lpIDList2, ByVal 0&, ByVal 0&)
' Debug.Print hr, Hex(hr)'
hr = SHBindToParent(lpIDList2, iid_shellfolder, psf, pidlChild) 'retuns "No such interface supported" error
End Sub
Outras dicas
Um protótipo que eu comecei a trabalhar, para aqueles que podem precisar.
Private Declare Function SHParseDisplayName Lib "shell32" (ByVal pszName As Long, ByVal IBindCtx As Long, ByRef ppidl As Long, ByVal sfgaoIn As Long, ByRef sfgaoOut As Long) As Long
Private Declare Function SHBindToParent Lib "shell32" (ByVal ppidl As Any, ByRef shellguid As UUID, ByRef psf As IShellFolder, ByRef ppidlLast As Any) As Long
Private Sub Main()
Dim iid_shellfolder As UUID
Dim hr As Long
Dim ppidl As Long
Dim topo As String
Dim psf As IShellFolder
Dim pidlChild As Long
Dim lpIDList2 As Long
Dim pdid As shdescriptionid
iid_shellfolder.Data1 = 136422
iid_shellfolder.Data2 = 0
iid_shellfolder.Data3 = 0
iid_shellfolder.Data4(0) = 192
iid_shellfolder.Data4(7) = 70
Dim bin As UUID
bin.Data1 = &H645FF040
bin.Data2 = &H5081
bin.Data3 = &H101B
bin.Data4(0) = &H9F
bin.Data4(1) = &H8
bin.Data4(2) = &H0
bin.Data4(3) = &HAA
bin.Data4(4) = &H0
bin.Data4(5) = &H2F
bin.Data4(6) = &H95
bin.Data4(7) = &H4E
'topo = "C:\Temp"
topo = "c:\$Recycle.Bin\S-1-5-21-725345543-1972579041-1417001333-1192\"
hr = SHParseDisplayName(StrPtr(topo), ByVal 0&, lpIDList2, ByVal 0&, ByVal 0&)
hr = SHBindToParent(lpIDList2, iid_shellfolder, psf, pidlChild)
Dim objShell As shell32.Shell
Set objShell = CreateObject("Shell.Application.1") 'New Shell32.Shell win.Shell.SHGetDataFromIDList psf, pidlChild, SHGDFIL_DESCRIPTIONID, pdid, LenB(pdid)
Ole32.CoTaskMemFree lpIDList2
Debug.Print equalUUID(pdid.clsid, bin)
end sub