python使用ctypes模块调用windowsapi获取系统版本示例

python使用ctypes模块调用windows api getversionex获取当前系统版本,没有使用python32

#!c:/python27/python.exe
#-*- coding:utf-8 -*-

"通过调用window api判断当前系统版本"
# 演示通过ctypes调用windows api函数.
# 作者已经知道python32能够实现相同功能
# 语句末尾加分号，纯属个人习惯
# 仅作部分版本判断，更详细的版本判断推荐系统osversioninfoex结构体

import ctypes;

class osinfo(ctypes.structure):
    _fields_ = [
        ("dwosversioninfosize",ctypes.c_long),
        ("dwmajorversion",ctypes.c_long),
        ("dwminorversion",ctypes.c_long),
        ("dwbuildnumber",ctypes.c_long),
        ("dwplatformid",ctypes.c_long),
        ("szcsdversion",ctypes.c_char*128)
    ];

def getsystemversionstring():
    kernel32 = ctypes.windll.loadlibrary("kernel32.dll");
    os = osinfo();
    os.dwosversioninfosize = ctypes.sizeof(os);
    if kernel32.getversionexa(ctypes.byref(os))==0:
        return "null version";
    if os.dwplatformid==1: #windows 95/98/me
        if os.dwmajorversion==4 and os.dwminorversion==0:
            verstr = "windows 95";
        elif os.dwmajorversion==4 and os.dwminorversion==10:
            verstr = "windows 98";
        elif os.dwmajorversion==4 and os.dwminorversion==90:
            verstr = "windows me";
        else:
            verstr = "unknown version";
    elif os.dwplatformid==2: #windows vista/server 2008/server 2003/xp/2000/nt
        if os.dwmajorversion==4 and os.dwminorversion==0:
            verstr = "windows nt 4.0";
        elif os.dwmajorversion==5 and os.dwminorversion==0:
            verstr = "windows 2000";
        elif os.dwmajorversion==5 and os.dwminorversion==1:
            verstr = "windows xp";
        elif os.dwmajorversion==5 and os.dwminorversion==2:
            verstr = "windows 2003";
        elif os.dwmajorversion==6 and os.dwminorversion==0:
            verstr = "windows vista"; # or 2008
        elif os.dwmajorversion>=0:
            verstr = "windows 7";
        else:
            verstr = "unknown version";
    else:
        return "unknown version";
    return verstr+" build"+str(os.dwbuildnumber)+" "+ctypes.string_at(os.szcsdversion);

if __name__ == "__main__":
    print(getsystemversionstring());