我想获取从特定应用程序弹出的每个新对话框的句柄。
我知道我应该用Windows中的SetWinEventHookuser32.dll
设置一个钩子,但我不知道如何在 python 中做到这一点。你能给我举个例子吗?
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2797 次
1 回答
12
这是一个非常简单的示例,它将打开的每个对话框的窗口文本打印到控制台:
import sys
import time
import ctypes
import ctypes.wintypes
EVENT_SYSTEM_DIALOGSTART = 0x0010
WINEVENT_OUTOFCONTEXT = 0x0000
user32 = ctypes.windll.user32
ole32 = ctypes.windll.ole32
ole32.CoInitialize(0)
WinEventProcType = ctypes.WINFUNCTYPE(
None,
ctypes.wintypes.HANDLE,
ctypes.wintypes.DWORD,
ctypes.wintypes.HWND,
ctypes.wintypes.LONG,
ctypes.wintypes.LONG,
ctypes.wintypes.DWORD,
ctypes.wintypes.DWORD
)
def callback(hWinEventHook, event, hwnd, idObject, idChild, dwEventThread, dwmsEventTime):
length = user32.GetWindowTextLengthA(hwnd)
buff = ctypes.create_string_buffer(length + 1)
user32.GetWindowTextA(hwnd, buff, length + 1)
print buff.value
WinEventProc = WinEventProcType(callback)
user32.SetWinEventHook.restype = ctypes.wintypes.HANDLE
hook = user32.SetWinEventHook(
EVENT_SYSTEM_DIALOGSTART,
EVENT_SYSTEM_DIALOGSTART,
0,
WinEventProc,
0,
0,
WINEVENT_OUTOFCONTEXT
)
if hook == 0:
print 'SetWinEventHook failed'
sys.exit(1)
msg = ctypes.wintypes.MSG()
while user32.GetMessageW(ctypes.byref(msg), 0, 0, 0) != 0:
user32.TranslateMessageW(msg)
user32.DispatchMessageW(msg)
user32.UnhookWinEvent(hook)
ole32.CoUninitialize()
于 2013-04-09T09:51:20.167 回答