python api框架 hook_在Python中设置WindowsHook(ctypes,WindowsAPI)
时间: 2024-02-22 19:55:25 浏览: 306
在 Python 中设置 Windows Hook,可以使用 ctypes 库调用 Windows API。具体步骤如下:
1. 导入 ctypes 库和 Windows API 函数:
```python
import ctypes
# 导入 Windows API 函数
user32 = ctypes.WinDLL('user32')
kernel32 = ctypes.WinDLL('kernel32')
```
2. 定义 Windows Hook 回调函数:
```python
# 定义回调函数类型
HOOKPROC = ctypes.WINFUNCTYPE(ctypes.c_int, ctypes.c_int, ctypes.wintypes.WPARAM, ctypes.wintypes.LPARAM)
# 定义回调函数
def hook_callback(nCode, wParam, lParam):
# 处理钩子消息
return user32.CallNextHookEx(hook_id, nCode, wParam, lParam)
```
3. 安装 Hook:
```python
# 安装 Hook
hook_id = user32.SetWindowsHookExW(
13, # WH_KEYBOARD_LL 钩子类型
HOOKPROC(hook_callback), # 回调函数
kernel32.GetModuleHandleW(None), # 模块句柄
0 # 线程 ID,0 表示钩子适用于所有线程
)
```
4. 处理消息循环:
```python
# 处理消息循环
msg = ctypes.wintypes.MSG()
while user32.GetMessageW(ctypes.byref(msg), None, 0, 0) != 0:
user32.TranslateMessage(ctypes.byref(msg))
user32.DispatchMessageW(ctypes.byref(msg))
```
5. 卸载 Hook:
```python
# 卸载 Hook
user32.UnhookWindowsHookEx(hook_id)
```
完整代码示例:
```python
import ctypes
import ctypes.wintypes
# 导入 Windows API 函数
user32 = ctypes.WinDLL('user32')
kernel32 = ctypes.WinDLL('kernel32')
# 定义回调函数类型
HOOKPROC = ctypes.WINFUNCTYPE(ctypes.c_int, ctypes.c_int, ctypes.wintypes.WPARAM, ctypes.wintypes.LPARAM)
# 定义回调函数
def hook_callback(nCode, wParam, lParam):
# 处理钩子消息
return user32.CallNextHookEx(hook_id, nCode, wParam, lParam)
# 安装 Hook
hook_id = user32.SetWindowsHookExW(
13, # WH_KEYBOARD_LL 钩子类型
HOOKPROC(hook_callback), # 回调函数
kernel32.GetModuleHandleW(None), # 模块句柄
0 # 线程 ID,0 表示钩子适用于所有线程
)
# 处理消息循环
msg = ctypes.wintypes.MSG()
while user32.GetMessageW(ctypes.byref(msg), None, 0, 0) != 0:
user32.TranslateMessage(ctypes.byref(msg))
user32.DispatchMessageW(ctypes.byref(msg))
# 卸载 Hook
user32.UnhookWindowsHookEx(hook_id)
```
注意:Windows Hook 需要在 Windows 操作系统上运行,而且需要管理员权限。同时,Hook 回调函数的处理时间应该尽量短,以免影响系统性能。
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