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2026-06-10

判断文件夹是否存在 - IsDirectory ​

函数简介 ​

判断指定路径的文件夹是否存在。

接口名称 ​

IsDirectory

DLL调用 ​

c
int IsDirectory(long instance, string path);

参数说明 ​

参数名类型说明
instance长整数型OLAPlug对象的指针，由 CreateCOLAPlugInterFace 接口生成。
path字符串要判断的文件夹路径。

示例 ​

SDK 调用 ​

cpp
#include "OLAPlugServer.h"

OLAPlugServer ola;
int ret = ola.IsDirectory("C:\\test.txt");
csharp
using OLAPlug;

var ola = new OLAPlugServer();
int ret = ola.IsDirectory("C:\\test.txt");
python
from OLAPlugServer import OLAPlugServer

ola = OLAPlugServer()
ret = ola.IsDirectory("C:\\test.txt")
java
import com.olaplug.OLAPlugServer;

OLAPlugServer ola = new OLAPlugServer();
int ret = ola.IsDirectory("C:\\test.txt");
cpp
var ola = com("OlaPlug.OlaSoft")
var ret = ola.IsDirectory("C:\\test.txt")
vbscript
Set ola = CreateObject("OlaPlug.OlaSoft")
ret = ola.IsDirectory("C:\\test.txt")
text
.局部变量 ola, OLAPlug
ola.创建 ()
ret ＝ ola.IsDirectory(“C:\\test.txt”)
aardio
import OLAPlugServer;
var ola = OLAPlugServer();
var ret = ola.IsDirectory("C:\\test.txt");
text
变量 ola <类型 = OLAPlugServer>
ola = 新建 OLAPlugServer
整数 ret = ola.IsDirectory("C:\\test.txt")
cpp
#include "OLAPlugServer.h"

OLAPlugServer ola;
int32_t ret = ola.IsDirectory("C:\\test.txt");

原生 DLL 调用 ​

cpp
long instance = CreateCOLAPlugInterFace();
IsDirectory(instance, "C:\\test.txt");
csharp
using System.Runtime.InteropServices;
using System.Text;

[DllImport("OLAPlug_x64.dll", CallingConvention = CallingConvention.StdCall)]
static extern long CreateCOLAPlugInterFace();
[DllImport("OLAPlug_x64.dll", CallingConvention = CallingConvention.StdCall)]
static extern int IsDirectory(long ola, string path);

long instance = CreateCOLAPlugInterFace();
IsDirectory(instance, "C:\\test.txt");
python
from ctypes import CDLL, c_int, c_int64, create_string_buffer

ola = CDLL("OLAPlug_x64.dll")
ola.CreateCOLAPlugInterFace.restype = c_int64
instance = ola.CreateCOLAPlugInterFace()
ola.IsDirectory(instance, "C:\\test.txt")

返回值 ​

1 存在，0 不存在或失败。

注意事项 ​

  • 路径无效时返回0。