我是一个使用ctypes的新手。我正在加载一个Windows DLL文件,并尝试读取数组GetDfuFileInfo
返回。我实际上最终在ctypes中加载文件,因为我不知道如何将dfu_file*
指针传递给GetDfuFileInfo
函数。这甚至可能吗?
C ++函数示例用法:
dfu_file* TheFile = ReadDfuFile(const char*);
dfu_file_info* Info = GetDfuFileInfo(dfu_file*);
Python代码:
lib = ctypes.WinDLL('dfulib.dll')
func = lib.ReadDfuFile
func.restype = ctypes.c_void_p
func.argtypes = [ctypes.c_char_p]
func("file.dvu")
修改
还试过这个:
lib = ctypes.WinDLL('dfulib.dll')
func = lib.ReadDfuFile
func.restype = ctypes.c_void_p
func.argtypes = [ctypes.c_char_p]
FileInfo = lib.GetDfuFileInfo
FileInfo.argtypes = [ctypes.c_void_p]
FileInfo.restype = None
s = func(r'file.dvu')
s = ctypes.cast(s, ctypes.c_char_p)
print FileInfo(s.value)
产生例外:
WindowsError: exception: access violation reading 0x00000016
任何形式的帮助都将受到赞赏。
答案 0 :(得分:-1)
示例代码看起来,此代码从kernel32.dll
调用GetFileAttributesA函数>>> from ctypes import *
>>> windll.LoadLibrary("kernel32.dll")
<WinDLL 'kernel32.dll', handle 77260000 at 2241ad0>
>>> windll.kernel32
<WinDLL 'kernel32', handle 77260000 at 225c2f0>
>>> windll.kernel32.GetFileAttributesA("c:/test/1.txt")
32