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<DllImport("shell32.dll", CharSet:=CharSet.Auto, SetLastError:=true, ThrowOnUnmappableChar:=true)> _
Public Function SHFileOperation(<MarshalAs(UnmanagedType.Struct)>ByRef lpFileOp As SHFILEOPSTRUCT) As Integer
End function
VB Signature
Public Declare Function SHFileOperation Lib "shell32" Alias "SHFileOperationA" _
(lpFileOp As SHFILEOPSTRUCT) As Long
Do not use GetLastError with the return values of this function.
It's important that the layout of the SHFILEOPSTRUCT structure differs for 32-bit processes and 64-bit processes.
pTo and pFrom must be end on two \0 characters. As C# strings automatically end one implicit \0 character, another must be added to the end.
Tips & Tricks:
As the struct layout differs between 32-bit and 64-bit processes the struct and method should be defined twice. After checking the current processes bitness call the appropiate version. This is the same approach used by Microsoft in Microsoft.VisualBasic.dll for the FileIO.FileSystem.DeleteFile implementation.
[StructLayout(LayoutKind.Sequential, Pack = 1, CharSet = CharSet.Auto)]
public struct SHFILEOPSTRUCT32
{
public IntPtr hwnd;
public uint wFunc;
[MarshalAs(UnmanagedType.LPTStr)]
public string pFrom;
[MarshalAs(UnmanagedType.LPTStr)]
public string pTo;
public ushort fFlags;
public bool fAnyOperationsAborted;
public IntPtr hNameMappings;
[MarshalAs(UnmanagedType.LPTStr)]
public string lpszProgressTitle;
}
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
public struct SHFILEOPSTRUCT64
{
public IntPtr hwnd;
public uint wFunc;
[MarshalAs(UnmanagedType.LPTStr)]
public string pFrom;
[MarshalAs(UnmanagedType.LPTStr)]
public string pTo;
public ushort fFlags;
public bool fAnyOperationsAborted;
public IntPtr hNameMappings;
[MarshalAs(UnmanagedType.LPTStr)]
public string lpszProgressTitle;
}
FileFuncFlags - Flags for wFunc member of [SHFILEOPSTRUCT]
2/6/2014 2:40:14 AM - -212.250.153.162
FILEOP_FLAGS - Flags for fFlags member of [SHFILEOPSTRUCT]
2/13/2013 3:55:11 AM - -202.74.138.1
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