Unity中調用Windows窗口選擇文件

1.OpenFileName數據接收類，如下：

using UnityEngine; using System.Collections; using System; using System.Runtime.InteropServices; [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; }

2.系統函數調用類， 如下：

 

public class LocalDialog { //鏈接指定系統函數 打開文件對話框
    [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); } //鏈接指定系統函數 另存為對話框
    [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); } }

3.測試入口類，如下：

using UnityEngine; using System.Collections; using System.Runtime.InteropServices; public class DialogTest : MonoBehaviour { void OnGUI() { if (GUI.Button(new Rect(10,10,100,50),"Open")) { OpenFileName openFileName = new OpenFileName(); openFileName.structSize = Marshal.SizeOf(openFileName); openFileName.filter = "Excel文件(*.xlsx)\0*.xlsx"; 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('/','\\');//默認路徑
            openFileName.title = "窗口標題"; openFileName.flags = 0x00080000 | 0x00001000 | 0x00000800 | 0x00000008; if (LocalDialog.GetSaveFileName(openFileName)) { Debug.Log(openFileName.file); Debug.Log(openFileName.fileTitle); } } } }