[转]python使用ctypes模块调用windowsapi获取系统版本

#coding: utf-8

import win32ui
import win32gui
import win32con
import win32api


#https://mail.python.org/pipermail/python-win32/2009-April/009078.html
‘‘‘
ico_x = win32api.GetSystemMetrics(win32con.SM_CXICON)
ico_y = win32api.GetSystemMetrics(win32con.SM_CYICON)
large, small = win32gui.ExtractIconEx("F:\\nginx\\nginx-1.13.0\\nginx.exe",0)
win32gui.DestroyIcon(large[0])


hdc = win32ui.CreateDCFromHandle( win32gui.GetDC(0) )
hbmp = win32ui.CreateBitmap()
hbmp.CreateCompatibleBitmap( hdc, ico_x, ico_x )
hdc = hdc.CreateCompatibleDC()

hdc.SelectObject( hbmp )
hdc.DrawIcon( (0,0), small[0] )
hbmp.SaveBitmapFile( hdc, "save.bmp" )

print(large)
print(small)
‘‘‘

"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)+" "+str(ctypes.string_at(os.szCSDVersion))
 
if __name__ == "__main__":
    print(GetSystemVersionString())