我如何才能知道一个目录在VB6回收站?
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16-09-2019 - |
题
我试图端口在这个代码文章以VB6,但我遇到了崩溃。我敢肯定,我的错误是在我的呼吁SHBindToParent
(的 MSDN条目)因为SHParseDisplayName
将返回0(S_OK
)和ppidl
被设定。我承认我的设置RIID的机制(我使用的等同类型,UUID
)是很丑陋,但我认为它更可能我做得不对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
解决方案
我相信你到SHBindToParent通话崩溃,因为你需要传递多头,然后使用返回的指针指向的内存复制到你的类型。我发现了几个帖子,当我用Google搜索,所提到的操作系统的支持,主要是95和98。当我试图在XP SP3我得到一个错误的SHBindToParent功能“不支持此接口。”
下面是我修改了代码,让过去的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
其他提示
一个原型,我开始工作,对于那些谁需要它。
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
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