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2026-06-18

指定窗口分配内存 - VirtualAllocEx ​

函数简介 ​

在指定的窗口所在进程分配一段内存。

接口名称 ​

VirtualAllocEx

DLL调用 ​

long VirtualAllocEx(long instance, long hwnd, long addr, int size, int type);

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。
hwnd长整数型窗口句柄或进程ID。
addr长整数型预期分配地址，0为自动分配。
size整数型分配的内存大小。
type整数型内存类型(0:可读写可执行,1:可读可执行,2:可读写)。

示例 ​

SDK 调用 ​

cpp
#include "OLAPlugServer.h"

OLAPlugServer ola;
long handle = ola.VirtualAllocEx(hwnd, 0, 0, 0);
csharp
using OLAPlug;

var ola = new OLAPlugServer();
long handle = ola.VirtualAllocEx(hwnd, 0, 0, 0);
python
from OLAPlugServer import OLAPlugServer

ola = OLAPlugServer()
handle = ola.VirtualAllocEx(hwnd, 0, 0, 0)
java
import com.olaplug.OLAPlugServer;

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

OLAPlugServer ola;
long handle = ola.VirtualAllocEx(hwnd, 0, 0, 0);

原生 DLL 调用 ​

cpp
long instance = CreateCOLAPlugInterFace();
VirtualAllocEx(instance, hwnd, 0, 0, 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 long VirtualAllocEx(long ola, long hwnd, long addr, int size, int type);

long instance = CreateCOLAPlugInterFace();
VirtualAllocEx(instance, hwnd, 0, 0, 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.VirtualAllocEx(instance, hwnd, 0, 0, 0)

返回值 ​

返回值说明
（返回值）分配的内存地址，0表示分配失败。