ctypes的结构内联合语法
问题说明
关于ctypes语法的快速问题，因为对于像我这样的初学者来说并没有统一文件的文档。
Quick question about ctypes syntax, as documentation for Unions isn't clear for a beginner like me.
说我想实现INPUT结构（请参见此处）：
Say I want to implement an INPUT structure (see here):
typedef struct tagINPUT {
DWORD type;
union {
MOUSEINPUT mi;
KEYBDINPUT ki;
HARDWAREINPUT hi;
} ;
} INPUT, *PINPUT;
我还是需要更改以下代码？
Should I or do I need to change the following code?
class INPUTTYPE(Union):
_fields_ = [("mi", MOUSEINPUT),
("ki", KEYBDINPUT),
("hi", HARDWAREINPUT)]
class INPUT(Structure):
_fields_ = [("type", DWORD),
(INPUTTYPE)]
不确定我是否可以为工会使用一个未命名的字段，但是要添加Win32API中未定义的名称似乎很危险。
Not sure I can have an unnamed field for the union, but adding a name that isn't defined in the Win32API seems dangerous.
谢谢
迈克
正确答案
您的结构语法无效：
AttributeError: '_fields_' must be a sequence of pairs
我相信您想使用匿名属性。看起来ctypes文档创建了一个 TYPEDESC 结构（非常相似
I believe you want to use the anonymous attribute in your ctypes.Structure. It looks like the ctypes documentation creates a TYPEDESC structure (which is very similar in construction to the tagINPUT).
还请注意，您必须将DWORD定义为平台的基本类型。
Also note that you'll have to define DWORD as a base type for your platform.
这篇好文章是转载于：学新通技术网
