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base64字符串转为图片 - Base64ToImage

函数简介

将Base64编码的图片数据转换为图片对象。

接口名称

Base64ToImage

DLL调用

long Base64ToImage(long ola, string base64_str);

参数说明

参数名类型说明
ola长整数型OLAPlug对象的指针,由 CreateCOLAPlugInterFace 接口生成。
base64_str字符串Base64编码的图片数据字符串,支持PNG、JPG、BMP等格式

示例

SDK 调用

cpp
#include "OLAPlugServer.h"

OLAPlugServer ola;
long handle = ola.Base64ToImage("value");
csharp
using OLAPlug;

var ola = new OLAPlugServer();
long handle = ola.Base64ToImage("value");
python
from OLAPlugServer import OLAPlugServer

ola = OLAPlugServer()
handle = ola.Base64ToImage("value")
java
import com.olaplug.OLAPlugServer;

OLAPlugServer ola = new OLAPlugServer();
long handle = ola.Base64ToImage("value");
cpp
var ola = com("OlaPlug.OlaSoft")
var handle = ola.Base64ToImage("value")
vbscript
Set ola = CreateObject("OlaPlug.OlaSoft")
handle = ola.Base64ToImage("value")
text
.局部变量 ola, OLAPlug
ola.创建 ()
handle = ola.Base64ToImage("value")
aardio
import OLAPlugServer;
var ola = OLAPlugServer();
var handle = ola.Base64ToImage("value");
text
变量 ola <类型 = OLAPlugServer>
ola = 新建 OLAPlugServer
长整数 handle = ola.Base64ToImage("value")
cpp
#include "OLAPlugServer.h"

OLAPlugServer ola;
long handle = ola.Base64ToImage("value");

原生 DLL 调用

cpp
long instance = CreateCOLAPlugInterFace();
Base64ToImage(instance, "value");
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 long Base64ToImage(long ola, string base64_str);

long instance = CreateCOLAPlugInterFace();
Base64ToImage(instance, "value");
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.Base64ToImage(instance, "value")

返回值

长整数型:成功返回图片句柄,失败返回0。

注意事项

  • 返回的图片需调用 FreeImagePtr 释放内存。
  • Base64字符串必须是有效的图片数据编码。