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2026-06-18

读取64位整型值 - RegistryGetQword ​

函数简介 ​

读取64位整型的注册表值（REG_QWORD）。

接口名称 ​

RegistryGetQword

DLL调用 ​

cpp
int64_t RegistryGetQword(int64_t instance, int64_t key, const char* valueName);

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。
key长整数型注册表键句柄，由 RegistryOpenKey 或 RegistryCreateKey 返回。
valueName字符串值名称。

示例 ​

SDK 调用 ​

cpp
#include "OLAPlugServer.h"

OLAPlugServer ola;
// rootKey=1 表示 HKEY_CURRENT_USER
long key = ola.RegistryOpenKey(1, "Software\\OLAPlug");
if (key != 0) {
    long64_t size = ola.RegistryGetQword(key, "CacheSize");
    ola.RegistryCloseKey(key);
}
csharp
using OLAPlug;

var ola = new OLAPlugServer();
long key = ola.RegistryOpenKey(1, @"Software\OLAPlug");
if (key != 0)
{
    long size = ola.RegistryGetQword(key, "CacheSize");
    ola.RegistryCloseKey(key);
}
python
from OLAPlugServer import OLAPlugServer

ola = OLAPlugServer()
key = ola.RegistryOpenKey(1, r"Software\OLAPlug")
if key != 0:
    size = ola.RegistryGetQword(key, "CacheSize")
    ola.RegistryCloseKey(key)
java
import com.olaplug.OLAPlugServer;

OLAPlugServer ola = new OLAPlugServer();
long key = ola.RegistryOpenKey(1, "Software\\OLAPlug");
if (key != 0) {
    ola.RegistryGetQword(key, "CacheSize");
    ola.RegistryCloseKey(key);
}
cpp
var ola = com("OlaPlug.OlaSoft")
var key = ola.RegistryOpenKey(1, "Software\\OLAPlug")
if(key) {
    ola.RegistryGetQword(key, "CacheSize");
    ola.RegistryCloseKey(key)
}
vbscript
Set ola = CreateObject("OlaPlug.OlaSoft")
key = ola.RegistryOpenKey(1, "Software\OLAPlug")
If key <> 0 Then
    ola.RegistryGetQword(key, "CacheSize");
    ola.RegistryCloseKey(key)
End If
text
.局部变量 ola, OLAPlug
ola.创建 ()
key ＝ ola.RegistryOpenKey (1, “Software\\OLAPlug“)
.如果真 (key ≠ 0)
    ola.RegistryGetQword(key, "CacheSize");
    ola.RegistryCloseKey (key)
.如果真结束
aardio
import OLAPlugServer;
var ola = OLAPlugServer();
var key = ola.RegistryOpenKey(1, "Software\\OLAPlug");
if(key){
    ola.RegistryGetQword(key, "CacheSize");
    ola.RegistryCloseKey(key);
}
text
变量 ola <类型 = OLAPlugServer>
ola = 新建 OLAPlugServer
长整数 key = ola.RegistryOpenKey(1, "Software\\OLAPlug")
如果真 (key ≠ 0)
{
    ola.RegistryGetQword(key, "CacheSize");
    ola.RegistryCloseKey(key)
}
cpp
#include "OLAPlugServer.h"

OLAPlugServer ola;
long key = ola.RegistryOpenKey(1, "Software\\OLAPlug");
if (key != 0) {
    ola.RegistryGetQword(key, "CacheSize");
    ola.RegistryCloseKey(key);
}

原生 DLL 调用 ​

cpp
long instance = CreateCOLAPlugInterFace();
long key = RegistryOpenKey(instance, 1, "Software\\OLAPlug");
if (key != 0) {
    long size = RegistryGetQword(instance, key, "CacheSize", 0);
    RegistryCloseKey(instance, key);
}
csharp
using System.Runtime.InteropServices;

[DllImport("OLAPlug_x64.dll", CallingConvention = CallingConvention.StdCall)]
static extern long CreateCOLAPlugInterFace();

long instance = CreateCOLAPlugInterFace();
long key = RegistryOpenKey(instance, 1, @"Software\OLAPlug");
if (key != 0)
{
    long size = RegistryGetQword(instance, key, "CacheSize", 0);
    RegistryCloseKey(instance, key);
}
python
from ctypes import CDLL, c_int, c_int64

ola = CDLL("OLAPlug_x64.dll")
ola.CreateCOLAPlugInterFace.restype = c_int64
instance = ola.CreateCOLAPlugInterFace()
key = ola.RegistryOpenKey(instance, 1, b"Software\\OLAPlug")
if key:
    long size = RegistryGetQword(instance, key, "CacheSize", 0);
    ola.RegistryCloseKey(instance, key)

返回值 ​

返回值说明
（返回值）长整数型。成功返回读取到的64位整型值，失败或不存在返回 0。

注意事项 ​

项目说明
如果值不存在或类型不匹配如果值不存在或类型不匹配，将返回 0。
无法区分返回的 0 是实际值还是错误标志无法区分返回的 0 是实际值还是错误标志。
REG_QWORD 类型为64位无符号整数REG_QWORD 类型为64位无符号整数。