T：2019-6-25 10:06:59

C：Scatt Kang

using System;

using System.Collections;

using System.Collections.Generic;

using System.Runtime.InteropServices;

using UnityEngine;

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]

public class OpenDialogFile

{

public int structSize = 0;

public IntPtr dlgOwner = IntPtr.Zero;

public IntPtr instance = IntPtr.Zero;

public String filter = null;

public String customFilter = null;

public int maxCustFilter = 0;

public int filterIndex = 0;

public String file = null;

public int maxFile = 0;

public String fileTitle = null;

public int maxFileTitle = 0;

public String initialDir = null;

public String title = null;

public int flags = 0;

public short fileOffset = 0;

public short fileExtension = 0;

public String defExt = null;

public IntPtr custData = IntPtr.Zero;

public IntPtr hook = IntPtr.Zero;

public String templateName = null;

public IntPtr reservedPtr = IntPtr.Zero;

public int reservedInt = 0;

public int flagsEx = 0;

}

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]

public class OpenDialogDir

{

public IntPtr hwndOwner = IntPtr.Zero;

public IntPtr pidlRoot = IntPtr.Zero;

public String pszDisplayName = null;

public String lpszTitle = null;

public UInt32 ulFlags = 0;

public IntPtr lpfn = IntPtr.Zero;

public IntPtr lParam = IntPtr.Zero;

public int iImage = 0;

}

public class WindowsExplorer

{

[DllImport("Comdlg32.dll", SetLastError = true, ThrowOnUnmappableChar = true, CharSet = CharSet.Auto)]

public static extern bool GetOpenFileName([In, Out] OpenDialogFile ofn);

[DllImport("Comdlg32.dll", SetLastError = true, ThrowOnUnmappableChar = true, CharSet = CharSet.Auto)]

public static extern bool GetSaveFileName([In, Out] OpenDialogFile ofn);

[DllImport("shell32.dll", SetLastError = true, ThrowOnUnmappableChar = true, CharSet = CharSet.Auto)]

public static extern IntPtr SHBrowseForFolder([In, Out] OpenDialogDir ofn);

[DllImport("shell32.dll", SetLastError = true, ThrowOnUnmappableChar = true, CharSet = CharSet.Auto)]

public static extern bool SHGetPathFromIDList([In] IntPtr pidl, [In, Out] char[] fileName);

/// <summary>

/// 调用WindowsExploer 并返回所选文件夹路径

/// </summary>

/// <param name="dialogtitle">打开对话框的标题</param>

/// <returns>所选文件夹路径</returns>

public static string GetPathFromWindowsExplorer(string dialogtitle = "请选择下载路径" )

{

string res;

OpenDialogDir ofn2 = new OpenDialogDir();

ofn2.pszDisplayName = new string(new char[2000]); ;     // 存放目录路径缓冲区  

        ofn2.lpszTitle = dialogtitle;// 标题  

        ofn2.ulFlags = 0x00000040; // 新的样式,带编辑框  

        IntPtr pidlPtr = WindowsExplorer.SHBrowseForFolder(ofn2);

char[] charArray = new char[2000];

for (int i = 0; i < 2000; i++)

charArray[i] = '\0';

WindowsExplorer.SHGetPathFromIDList(pidlPtr, charArray);

res = new String(charArray);

res = res.Substring(0, res.IndexOf('\0'));

return res;

}

}