在python中使用cppyy时，指针变量将错误提升为未知类型
在python中使用cppyy时，指针变量将错误提升为未知类型
提问于 2020-10-11 21:12:49
我有这个sdk，这是documentation，它在c++中，所以我安装了cppyy，但是当我在python中包含带有cppyy的头文件时，它会引发错误。
// MysticLight_SDK.h : header file
//
#pragma once
typedef int (*LPMLAPI_Initialize)();
typedef int (*LPMLAPI_GetDeviceInfo)(SAFEARRAY** pDevType, SAFEARRAY** pLedCount);
typedef int (*LPMLAPI_GetDeviceName)(BSTR type, SAFEARRAY** pDevName);
typedef int (*LPMLAPI_GetDeviceNameEx)(BSTR type, DWORD index, BSTR* pDevName);
typedef int (*LPMLAPI_GetErrorMessage)(int ErrorCode, BSTR* pDesc);
typedef int (*LPMLAPI_GetLedName)(BSTR type, SAFEARRAY** pLedName);
typedef int (*LPMLAPI_GetLedInfo)(BSTR type, DWORD index, BSTR* pName, SAFEARRAY** pLedStyles);
typedef int (*LPMLAPI_GetLedColor)(BSTR type, DWORD index, DWORD* R, DWORD* G, DWORD* B);
typedef int (*LPMLAPI_GetLedStyle)(BSTR type, DWORD index, BSTR* style);
typedef int (*LPMLAPI_GetLedMaxBright)(BSTR type, DWORD index, DWORD* maxLevel);
typedef int (*LPMLAPI_GetLedBright)(BSTR type, DWORD index, DWORD* currentLevel);
typedef int (*LPMLAPI_GetLedMaxSpeed)(BSTR type, DWORD index, DWORD* maxLevel);
typedef int (*LPMLAPI_GetLedSpeed)(BSTR type, DWORD index, DWORD* currentLevel);
typedef int (*LPMLAPI_SetLedColor)(BSTR type, DWORD index, DWORD R, DWORD G, DWORD B);
typedef int (*LPMLAPI_SetLedColors)(BSTR type, DWORD AreaIndex, SAFEARRAY** pLedName, DWORD* R, DWORD* G, DWORD* B);
typedef int (*LPMLAPI_SetLedColorEx)(BSTR type, DWORD AreaIndex, BSTR pLedName, DWORD R, DWORD G, DWORD B, DWORD );
typedef int (*LPMLAPI_SetLedColorSync)(BSTR type, DWORD AreaIndex, BSTR pLedName, DWORD R, DWORD G, DWORD B, DWORD );
typedef int (*LPMLAPI_SetLedStyle)(BSTR type, DWORD index, BSTR style);
typedef int (*LPMLAPI_SetLedBright)(BSTR type, DWORD index, DWORD level);
typedef int (*LPMLAPI_SetLedSpeed)(BSTR type, DWORD index, DWORD level);错误
Traceback (most recent call last):
File ".\check.py", line 5, in <module>
cppyy.include('MysticLight_SDK.h')
File "C:\Users\sarfaraz\AppData\Local\Programs\Python\Python37\lib\site-packages\cppyy\__init__.py", line 217, in include
raise ImportError('Failed to load header file "%s"%s' % (header, err.err))
ImportError: Failed to load header file "MysticLight_SDK.h"
In file included from input_line_18:1:
./MysticLight_SDK.h:7:38: error: unknown type name 'SAFEARRAY'
typedef int (*LPMLAPI_GetDeviceInfo)(SAFEARRAY** pDevType, SAFEARRAY** pLedCount);
^
./MysticLight_SDK.h:7:60: error: unknown type name 'SAFEARRAY'
typedef int (*LPMLAPI_GetDeviceInfo)(SAFEARRAY** pDevType, SAFEARRAY** pLedCount);
^
./MysticLight_SDK.h:8:38: error: unknown type name 'BSTR'
typedef int (*LPMLAPI_GetDeviceName)(BSTR type, SAFEARRAY** pDevName);
^
./MysticLight_SDK.h:8:49: error: unknown type name 'SAFEARRAY'
typedef int (*LPMLAPI_GetDeviceName)(BSTR type, SAFEARRAY** pDevName);
^
./MysticLight_SDK.h:9:40: error: unknown type name 'BSTR'
typedef int (*LPMLAPI_GetDeviceNameEx)(BSTR type, DWORD index, BSTR* pDevName);
^
./MysticLight_SDK.h:9:64: error: unknown type name 'BSTR'
typedef int (*LPMLAPI_GetDeviceNameEx)(BSTR type, DWORD index, BSTR* pDevName);
^
./MysticLight_SDK.h:10:55: error: unknown type name 'BSTR'
typedef int (*LPMLAPI_GetErrorMessage)(int ErrorCode, BSTR* pDesc);
^
./MysticLight_SDK.h:11:35: error: unknown type name 'BSTR'
typedef int (*LPMLAPI_GetLedName)(BSTR type, SAFEARRAY** pLedName);
^
./MysticLight_SDK.h:11:46: error: unknown type name 'SAFEARRAY'
typedef int (*LPMLAPI_GetLedName)(BSTR type, SAFEARRAY** pLedName);
^
./MysticLight_SDK.h:12:35: error: unknown type name 'BSTR'
typedef int (*LPMLAPI_GetLedInfo)(BSTR type, DWORD index, BSTR* pName, SAFEARRAY** pLedStyles);
^
./MysticLight_SDK.h:12:59: error: unknown type name 'BSTR'
typedef int (*LPMLAPI_GetLedInfo)(BSTR type, DWORD index, BSTR* pName, SAFEARRAY** pLedStyles);
^
./MysticLight_SDK.h:12:72: error: unknown type name 'SAFEARRAY'
typedef int (*LPMLAPI_GetLedInfo)(BSTR type, DWORD index, BSTR* pName, SAFEARRAY** pLedStyles);
^
./MysticLight_SDK.h:13:36: error: unknown type name 'BSTR'
typedef int (*LPMLAPI_GetLedColor)(BSTR type, DWORD index, DWORD* R, DWORD* G, DWORD* B);
^
./MysticLight_SDK.h:14:36: error: unknown type name 'BSTR'
typedef int (*LPMLAPI_GetLedStyle)(BSTR type, DWORD index, BSTR* style);
^
./MysticLight_SDK.h:14:60: error: unknown type name 'BSTR'
typedef int (*LPMLAPI_GetLedStyle)(BSTR type, DWORD index, BSTR* style);
^
./MysticLight_SDK.h:15:40: error: unknown type name 'BSTR'
typedef int (*LPMLAPI_GetLedMaxBright)(BSTR type, DWORD index, DWORD* maxLevel);
^
./MysticLight_SDK.h:16:37: error: unknown type name 'BSTR'
typedef int (*LPMLAPI_GetLedBright)(BSTR type, DWORD index, DWORD* currentLevel);
^
./MysticLight_SDK.h:17:39: error: unknown type name 'BSTR'
typedef int (*LPMLAPI_GetLedMaxSpeed)(BSTR type, DWORD index, DWORD* maxLevel);
^
./MysticLight_SDK.h:18:36: error: unknown type name 'BSTR'
typedef int (*LPMLAPI_GetLedSpeed)(BSTR type, DWORD index, DWORD* currentLevel);
^
fatal error: too many errors emitted, stopping now [-ferror-limit=]cppyy运行得很好，我在没有标题的情况下对它进行了测试，没有出现错误
要编写代码以检查此
import cppyy
cppyy.include('MysticLight_SDK.h')
cppyy.cppdef("""
int main() {
int c;
int a = 10;
int b = 10;
c = a+b;
return c;
};""")
c = cppyy.gbl.main
print(c())提前感谢
Stack Overflow用户
回答已采纳
发布于 2020-10-12 01:40:09
看起来SAFEARRAY位于oaidl.h中，它需要包含在MysticLight_SDK.h之前(以及在C++中使用MysticLight_SDK.h时通常包含的任何其他标头)。
https://cppyy.readthedocs.io/en/latest/utilities.html#dictionaries以预编译头的形式拉入标准的C++头，但任何其他平台和项目头都需要显式包含，或者需要打包到单独的字典( cppyy )中以允许自动加载。
更准确地说，使用上面链接的.zip文件，如下所示：
import cppyy
cppyy.include("oaidl.h") # <-- this is the one
cppyy.include("MysticLight_SDK.h")
cppyy.load_library("MysticLight_SDK_x64")这对我很有效。
除此之外，我不知道用例是什么，因为MysticLight_SDK.h头只包含函数指针的typedefs，没有实际的API。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/64304401
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