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Python的進步: ctypes
大部份dll使用ctypes都可以應用得很好，像是我擔心的callback，ctypes一樣可以提供方法來把python的函數包裝成c語言的callback丟給c語言的dll，運作得很好
使用ctypes调用kernel32.dll中的函数
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在Python中由ctypes实现。
class _PROCESS_INFORMATION(Structure):
_fields_ = [('hProcess', c_void_p),
('hThread', c_void_p),
('dwProcessId', c_ulong),
('dwThreadId', c_ulong)]
windows下面的python扩展-win32all 和ctypes
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import win32api #winapi库
import win32con #windows常数定义win32api.MessageBox(win32con.NULL, "提示信息", "提示标题", win32con.MB_OK | win32con.MB_ICONINFORMATION)
输出一个messagbox,标题为"提示标题"，提示文本为"提示信息"，对话框图标为提示图标
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import ctypes #cytpes库
import win32con #windows常数定义
msgbox = ctypes.windll.user32.MessageBoxA
msgbox(win32con.NULL, "提示信息", "提示标题", win32con.MB_OK | win32con.MB_ICONINFORMATION) - 2 more annotations...
Python调用windows下DLL详解
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stdcall调用约定：两种加载方式
Objdll = ctypes.windll.LoadLibrary("dllpath")
Objdll = ctypes.WinDLL("dllpath")
cdecl调用约定：也有两种加载方式
Objdll = ctypes.cdll.LoadLibrary("dllpath")
Objdll = ctypes.CDLL("dllpath")
其实windll和cdll分别是WinDLL类和CDll类的对象
The ctypes package
ctypes is an advanced ffi (Foreign Function Interface) package for Python 2.3 and higher. In Python 2.5 it is already included.
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