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2026-06-30

指定窗口修改内存保护属性 - VirtualProtectEx ​

函数简介 ​

修改指定的内存保护属性。

接口名称 ​

VirtualProtectEx

DLL调用 ​

int VirtualProtectEx(long instance, long hwnd, long addr, int size, int newProtect, int* oldProtect);

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长整数型要修改的内存地址。
size整数型需要修改的内存大小。
newProtect整数型内存类型：0x10 PAGE_EXECUTE 可执行，0x20 PAGE_EXECUTE_READ 可读可执行，0x40 PAGE_READWRITE 可读可写可执行，0x80 PAGE_EXECUTE_WRITECOPY。
oldProtect整数型指针返回修改前的保护属性。

示例 ​

SDK 调用 ​

cpp
#include "OLAPlugServer.h"

OLAPlugServer ola;
int ret = ola.VirtualProtectEx(hwnd, 0, 0, 0, "value");
csharp
using OLAPlug;

var ola = new OLAPlugServer();
int ret = ola.VirtualProtectEx(hwnd, 0, 0, 0, "value");
python
from OLAPlugServer import OLAPlugServer

ola = OLAPlugServer()
ret = ola.VirtualProtectEx(hwnd, 0, 0, 0, "value")
java
import com.olaplug.OLAPlugServer;

OLAPlugServer ola = new OLAPlugServer();
int ret = ola.VirtualProtectEx(hwnd, 0, 0, 0, "value");
go
import "github.com/ola/olaplug/olaplug"

ola, _ := olaplug.NewOLAPlugServer("OLAPlug_x64.dll")
defer ola.ReleaseObj()
ret := ola.VirtualProtectEx(hwnd, 0, 0, 0, "value")
rust
use olaplug::OLAPlugServer;

let ola = OLAPlugServer::new("OLAPlug_x64.dll").unwrap();
let ret = ola.virtual_protect_ex(&hwnd, 0, 0, 0, "value");
cpp
var ola = com("OlaPlug.OlaSoft")
var ret = ola.VirtualProtectEx(hwnd, 0, 0, 0, "value")
vbscript
Set ola = CreateObject("OlaPlug.OlaSoft")
ret = ola.VirtualProtectEx(hwnd, 0, 0, 0, "value")
text
.局部变量 ola, OLAPlug
ola.创建 ()
ret ＝ ola.VirtualProtectEx(hwnd, 0, 0, 0, “value”)
aardio
import OLAPlugServer;
var ola = OLAPlugServer();
var ret = ola.VirtualProtectEx(hwnd, 0, 0, 0, "value");
text
变量 ola <类型 = OLAPlugServer>
ola = 新建 OLAPlugServer
整数 ret = ola.VirtualProtectEx(hwnd, 0, 0, 0, "value")
cpp
#include "OLAPlugServer.h"

OLAPlugServer ola;
int32_t ret = ola.VirtualProtectEx(hwnd, 0, 0, 0, "value");

原生 DLL 调用 ​

cpp
long instance = CreateCOLAPlugInterFace();
VirtualProtectEx(instance, hwnd, 0, 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 int VirtualProtectEx(long ola, long hwnd, long addr, int size, int newProtect, int oldProtect);

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

返回值 ​

返回值说明
1成功。
0失败。