unity 调用win32打开文件管理器 选中图片 将图片赋给立方体的材质纹理
时间: 2023-09-08 16:16:43 浏览: 71
要在Unity中使用Win32 API打开文件浏览器,可以使用DllImport将Windows API导入Unity。以下是一个示例:
```
using System.Runtime.InteropServices;
public class Win32API
{
[DllImport("user32.dll")]
public static extern IntPtr GetActiveWindow();
[DllImport("comdlg32.dll", SetLastError = true, CharSet = CharSet.Auto)]
public static extern bool GetOpenFileName([In, Out] OpenFileName ofn);
}
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
public class OpenFileName
{
public int lStructSize = 0;
public IntPtr hwndOwner = IntPtr.Zero;
public IntPtr hInstance = IntPtr.Zero;
public string lpstrFilter = null;
public string lpstrCustomFilter = null;
public int nMaxCustFilter = 0;
public int nFilterIndex = 0;
public string lpstrFile = null;
public int nMaxFile = 0;
public string lpstrFileTitle = null;
public int nMaxFileTitle = 0;
public string lpstrInitialDir = null;
public string lpstrTitle = null;
public int Flags = 0;
public short nFileOffset = 0;
public short nFileExtension = 0;
public string lpstrDefExt = null;
public IntPtr lCustData = IntPtr.Zero;
public IntPtr lpfnHook = IntPtr.Zero;
public string lpTemplateName = null;
public IntPtr pvReserved = IntPtr.Zero;
public int dwReserved = 0;
public int FlagsEx = 0;
}
public class OpenFileExample : MonoBehaviour
{
public Material cubeMaterial;
private void Start()
{
OpenFile();
}
private void OpenFile()
{
OpenFileName ofn = new OpenFileName();
ofn.lStructSize = Marshal.SizeOf(ofn);
ofn.lpstrFilter = "Image Files (*.png, *.jpg)\0*.png;*.jpg\0All Files (*.*)\0*.*\0";
ofn.lpstrFile = new string(new char[256]);
ofn.nMaxFile = ofn.lpstrFile.Length;
ofn.lpstrInitialDir = Application.dataPath;
ofn.lpstrTitle = "Select an image";
ofn.Flags = 0x00080000 | 0x00001000 | 0x00000800 | 0x00000200;
ofn.hwndOwner = Win32API.GetActiveWindow();
if (Win32API.GetOpenFileName(ofn))
{
string filePath = ofn.lpstrFile.TrimEnd(new char[] { '\0' });
Texture2D texture = LoadTextureFromFile(filePath);
if (texture != null)
{
cubeMaterial.mainTexture = texture;
}
}
}
private Texture2D LoadTextureFromFile(string filePath)
{
byte[] fileData = File.ReadAllBytes(filePath);
Texture2D texture = new Texture2D(2, 2);
if (texture.LoadImage(fileData))
{
return texture;
}
else
{
return null;
}
}
}
```
在上面的代码中,我们定义了一个Win32API类,用于导入Windows API。我们还定义了一个OpenFileName类,用于传递打开文件对话框的参数。在OpenFileExample类中,我们使用GetOpenFileName方法打开文件对话框,并在选择文件后加载纹理并将其赋给立方体的材质。请注意,我们使用了GetActiveWindow方法来获取Unity编辑器的窗口句柄,以确保打开文件对话框正确显示在Unity编辑器中。
请确保将上面的代码添加到您的Unity项目中,并将cubeMaterial变量设置为立方体的材质。
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