unity没有提供打开windows对话框的api，在开发种也会遇到选择系统文件夹或选择系统文件的需求
///
/工具：windows系统文件夹/文件选择窗口//
///
using System;
using System.Runtime.InteropServices;
public class OpenFile
{/// <summary>/// 选择文件夹/// </summary>public static string ChooseWinFolder(){//使用如下：OpenDialogDir ofn = new OpenDialogDir();ofn.pszDisplayName = new string(new char[2000]); ; // 存放目录路径缓冲区 ofn.title = "选择文件夹";// 标题 //ofn.ulFlags = BIF_NEWDIALOGSTYLE | BIF_EDITBOX; // 新的样式,带编辑框 IntPtr pidlPtr = WindowDll.SHBrowseForFolder(ofn);char[] charArray = new char[2000];for (int i = 0; i < 2000; i++)charArray[i] = '\0';WindowDll.SHGetPathFromIDList(pidlPtr, charArray);string fullDirPath = new String(charArray);return fullDirPath.Substring(0, fullDirPath.IndexOf('\0'));//fullDirPath = fullDirPath.Substring(0, fullDirPath.IndexOf('\0'));//Debug.Log(fullDirPath);//这个就是选择的目录路径}/// <summary>/// 选择文件/// </summary>public static string ChooseWinFile(){OpenFileName OpenFileName = new OpenFileName();OpenFileName.structSize = Marshal.SizeOf(OpenFileName);OpenFileName.filter = "应用程序(*.exe)\0*.exe";OpenFileName.file = new string(new char[1024]);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 = "选择exe文件";OpenFileName.flags = 0x00080000 | 0x00001000 | 0x00000800 | 0x00000008;if (WindowDll.GetOpenFileName(OpenFileName))return OpenFileName.file;elsereturn null;}
}/// <summary>
/// windows系统文件选择窗口
/// </summary>
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
public struct OpenFileName
{public int structSize;public IntPtr dlgOwner;public IntPtr instance;public String filter;public String customFilter;public int maxCustFilter;public int filterIndex;public String file;public int maxFile;public String fileTitle;public int maxFileTitle;public String initialDir;public String title;public int flags;public short fileOffset;public short fileExtension;public String defExt;public IntPtr custData;public IntPtr hook;public String templateName;public IntPtr reservedPtr;public int reservedInt;public int flagsEx;
}/// <summary>
/// windows系统文件夹选择窗口
/// </summary>
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
public struct OpenDialogDir
{public IntPtr hwndOwner;public IntPtr pidlRoot;public String pszDisplayName;public String title;public UInt32 ulFlags;public IntPtr lpfno;public IntPtr lParam;public int iImage;
}
public class WindowDll
{//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);}[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);
}
)
