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2026-06-10

覆盖图片 - CoverImage ​

函数简介 ​

将一张图片覆盖到另一张图片的指定位置，支持透明度设置。

接口名称 ​

CoverImage

DLL调用 ​

int CoverImage(long ola, long srcPtr, long dstPtr, int x, int y, int alpha);

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。
srcPtr长整数型源图片的OLAImage对象地址
dstPtr长整数型目标图片的OLAImage对象地址
x整数型覆盖位置的X坐标
y整数型覆盖位置的Y坐标
alpha整数型透明度，范围0-255，0完全透明，255完全不透明

示例 ​

SDK 调用 ​

cpp
#include "OLAPlugServer.h"

OLAPlugServer ola;
long handle = ola.CoverImage(0, 0, 100, 200, 1.0);
csharp
using OLAPlug;

var ola = new OLAPlugServer();
long handle = ola.CoverImage(0, 0, 100, 200, 1.0);
python
from OLAPlugServer import OLAPlugServer

ola = OLAPlugServer()
handle = ola.CoverImage(0, 0, 100, 200, 1.0)
java
import com.olaplug.OLAPlugServer;

OLAPlugServer ola = new OLAPlugServer();
long handle = ola.CoverImage(0, 0, 100, 200, 1.0);
cpp
var ola = com("OlaPlug.OlaSoft")
var handle = ola.CoverImage(0, 0, 100, 200, 1.0)
vbscript
Set ola = CreateObject("OlaPlug.OlaSoft")
handle = ola.CoverImage(0, 0, 100, 200, 1.0)
text
.局部变量 ola, OLAPlug
ola.创建 ()
handle ＝ ola.CoverImage(0, 0, 100, 200, 1.0)
aardio
import OLAPlugServer;
var ola = OLAPlugServer();
var handle = ola.CoverImage(0, 0, 100, 200, 1.0);
text
变量 ola <类型 = OLAPlugServer>
ola = 新建 OLAPlugServer
长整数 handle = ola.CoverImage(0, 0, 100, 200, 1.0)
cpp
#include "OLAPlugServer.h"

OLAPlugServer ola;
long handle = ola.CoverImage(0, 0, 100, 200, 1.0);

原生 DLL 调用 ​

cpp
long instance = CreateCOLAPlugInterFace();
CoverImage(instance, 0, 0, 100, 200, 0);
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 CoverImage(long ola, long srcPtr, long dstPtr, int x, int y, int alpha);

long instance = CreateCOLAPlugInterFace();
CoverImage(instance, 0, 0, 100, 200, 0);
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.CoverImage(instance, 0, 0, 100, 200, 0)

返回值 ​

整数型：1 成功，0 失败。

注意事项 ​

  • 源图片超出目标图片范围的部分将被裁剪。