Unityはパス選択画面を呼び出す実現します

この記事の文書、団結のボタンをクリックし、新しいウィンドウからの曲がファイル関数を選択し
、直接コードでそれを見ています：

using System;
using System.Collections;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using UnityEngine;

public class OpenFileTest : MonoBehaviour {

    /// <summary>
    /// 浏览按钮
    /// </summary>
    public UnityEngine.UI.Button browseBtn;

    private void Awake()
    {
        browseBtn.onClick.AddListener(OnClickLiuLanBtn);
    }

    /// <summary>
    /// 点击了浏览按钮
    /// </summary>
    void OnClickLiuLanBtn()
    {
        OpenFileName openFileName = new OpenFileName();

        openFileName.structSize = Marshal.SizeOf(openFileName);

        //控制指定文件的后缀名格式
        openFileName.filter ="Txt文件(*.txt)\0*.txt";

        openFileName.file = new string(new char[256]);

        openFileName.maxFile = openFileName.file.Length;

        openFileName.fileTitle = new string(new char[64]);

        openFileName.maxFileTitle = openFileName.fileTitle.Length;

        openFileName.initialDir = Application.streamingAssetsPath.Replace('/', '\\');//默认路径

        openFileName.title = "新窗口名称";

        openFileName.flags = 0x00080000 | 0x00001000 | 0x00000800 | 0x00000008;

        if (LocalDialog.GetOpenFileName(openFileName))
        {
            Debug.Log(openFileName.file);
            Debug.Log(openFileName.fileTitle);

        }
    }
}

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
public class OpenFileName
{
    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;

}

public class LocalDialog
{

    //链接指定系统函数       打开文件对话框
    [DllImport("Comdlg32.dll", SetLastError = true, ThrowOnUnmappableChar = true, CharSet = CharSet.Auto)]
   
    public static extern bool GetOpenFileName([In, Out] OpenFileName ofn);
    public static bool GetOFN([In, Out] OpenFileName ofn)
    {
        return GetOpenFileName(ofn);
    }

    //链接指定系统函数        另存为对话框
    [DllImport("Comdlg32.dll", SetLastError = true, ThrowOnUnmappableChar = true, CharSet = CharSet.Auto)]

    public static extern bool GetSaveFileName([In, Out] OpenFileName ofn);
    public static bool GetSFN([In, Out] OpenFileName ofn)
    {
        return GetSaveFileName(ofn);
    }
}