最新的 Python Sendkeys 模块适用于 Python 2.6。我无法自己升级它，因为它需要重新编译 C 模块。
有谁知道将密钥发送到窗口的一种相当简单的替代方法？
使用 win32ui.FindWindow() 我可以找到正确的窗口，然后使用 PyCWnd.SetActiveWindow() 使其处于活动状态，因此所需要的只是一种将击键发送到活动窗口的简单方法。
目的是执行一个菜单项。
该应用程序是用 Delphi 编写的，没有我知道的任何进程间接口。
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4 回答
9
这是一个调用 user32.SendInput() 的工作模块。
不完美，但可以使用。
编辑：
昨天我做了一个带有类的版本，并在一个工作的 tkinter 应用程序中使用它。当我有时间清理它时会把它放在这里。
在下面的文档字符串中添加了这个：
[ 如果我从个人资料中的文件夹工作，那没关系。
在另一个分区上工作时会发生这些问题。
文件权限没问题，所以不知道是什么阻止了 SendInput。]
SciTE 仍然需要完整的确切窗口标题。
#!/usr/bin/python
# -*- coding: utf-8 -*-
''' send_input for python 3, from jh45dev@gmail.com
code from Daniel F is adapted here. The original is at:
http://mail.python.org/pipermail/python-win32/2005-April/003131.html
SendInput sends to the window that has the keyboard focus.
That window must not be minimized.
There seem to be some strange limitations with user32.SendInput()
Here is what happened in my testing (on Vista sp2).
[edit: It is OK if I work from a folder within my profile.
These problems happened when working on another partition.
File permissions were OK, so do not know what blocked SendInput.]
1
I opened Notepad from the Start menu,
then in Notepad opened test.txt,
and all worked fine.
2
I opened Notepad by opening test.txt in Explorer.
find_window() found Notepad, but user32.SendInput() had no effect.
If Notepad was minimized, it did not get restored or focussed.
The same happened with SciTE and Notepad2.
Another strangeness:
For SciTE I had to put in the whole window title, eg "test.txt - SciTE",
but for Notepad and Notepad2, only the app name, eg "Notepad".
'''
import ctypes as ct
from win32con import SW_MINIMIZE, SW_RESTORE
from win32ui import FindWindow, error as ui_err
from time import sleep
class cls_KeyBdInput(ct.Structure):
_fields_ = [
("wVk", ct.c_ushort),
("wScan", ct.c_ushort),
("dwFlags", ct.c_ulong),
("time", ct.c_ulong),
("dwExtraInfo", ct.POINTER(ct.c_ulong) )
]
class cls_HardwareInput(ct.Structure):
_fields_ = [
("uMsg", ct.c_ulong),
("wParamL", ct.c_short),
("wParamH", ct.c_ushort)
]
class cls_MouseInput(ct.Structure):
_fields_ = [
("dx", ct.c_long),
("dy", ct.c_long),
("mouseData", ct.c_ulong),
("dwFlags", ct.c_ulong),
("time", ct.c_ulong),
("dwExtraInfo", ct.POINTER(ct.c_ulong) )
]
class cls_Input_I(ct.Union):
_fields_ = [
("ki", cls_KeyBdInput),
("mi", cls_MouseInput),
("hi", cls_HardwareInput)
]
class cls_Input(ct.Structure):
_fields_ = [
("type", ct.c_ulong),
("ii", cls_Input_I)
]
def find_window( s_app_name ):
try:
window1 = FindWindow( None, s_app_name,)
return window1
except ui_err:
pass
except:
raise
try:
window1 = FindWindow( s_app_name, None, )
return window1
except ui_err:
return None
except:
raise
def make_input_objects( l_keys ):
p_ExtraInfo_0 = ct.pointer(ct.c_ulong(0))
l_inputs = [ ]
for n_key, n_updown in l_keys:
ki = cls_KeyBdInput( n_key, 0, n_updown, 0, p_ExtraInfo_0 )
ii = cls_Input_I()
ii.ki = ki
l_inputs.append( ii )
n_inputs = len(l_inputs)
l_inputs_2=[]
for ndx in range( 0, n_inputs ):
s2 = "(1, l_inputs[%s])" % ndx
l_inputs_2.append(s2)
s_inputs = ', '.join(l_inputs_2)
cls_input_array = cls_Input * n_inputs
o_input_array = eval( "cls_input_array( %s )" % s_inputs )
p_input_array = ct.pointer( o_input_array )
n_size_0 = ct.sizeof( o_input_array[0] )
# these are the args for user32.SendInput()
return ( n_inputs, p_input_array, n_size_0 )
'''It is interesting that o_input_array has gone out of scope
by the time p_input_array is used, but it works.'''
def send_input( window1, t_inputs, b_minimize=True ):
tpl1 = window1.GetWindowPlacement()
was_min = False
if tpl1[1] == 2:
was_min = True
window1.ShowWindow(SW_RESTORE)
sleep(0.2)
window1.SetForegroundWindow()
sleep(0.2)
window1.SetFocus()
sleep(0.2)
rv = ct.windll.user32.SendInput( *t_inputs )
if was_min and b_minimize:
sleep(0.3) # if the last input was Save, it may need time to take effect
window1.ShowWindow(SW_MINIMIZE)
return rv
# define some commonly-used key sequences
t_ctrl_s = ( # save in many apps
( 0x11, 0 ),
( 0x53, 0 ),
( 0x11, 2 ),
)
t_ctrl_r = ( # reload in some apps
( 0x11, 0 ),
( 0x52, 0 ),
( 0x11, 2 ),
)
def test():
# file > open; a non-invasive way to test
t_ctrl_o = ( ( 0x11, 0 ), ( 0x4F, 0 ), ( 0x11, 2 ), )
# writes "Hello\n"
# 0x10 is shift. note that to repeat a key, as with 4C here, you have to release it after the first press
t_hello = ( ( 0x10, 0 ), ( 0x48, 0 ), ( 0x10, 2 ), ( 0x45, 0 ), ( 0x4C, 0 ), ( 0x4C, 2 ), ( 0x4C, 0 ), ( 0x4F, 0 ), ( 0x0D, 0 ), )
l_keys = [ ]
## l_keys.extend( t_ctrl_o )
l_keys.extend( t_hello )
l_keys.extend( t_ctrl_s )
## s_app_name = "SciTE"
## s_app_name = "(Untitled) - SciTE"
s_app_name = "test.txt - SciTE"
## s_app_name = "Notepad2"
## s_app_name = "Notepad"
window1 = find_window( s_app_name )
if window1 == None:
print( "%r has no window." % s_app_name )
input( 'press enter to close' )
exit()
t_inputs = make_input_objects( l_keys )
n = send_input( window1, t_inputs )
## print( "SendInput returned: %r" % n )
## print( "GetLastError: %r" % ct.windll.kernel32.GetLastError() )
## input( 'press enter to close' )
if __name__ == '__main__':
test()
于 2010-01-05T05:03:38.847 回答
5
我不久前在 ctypes 中重写了 sendkeys 的 C 位... https://bitbucket.org/markm/sendkeysctypes 我看到其他人也这样做了： http ://code.google.com/p/sendkeys-ctypes /
如果我记得它应该是替换 sendkeys （只有导入行必须更改）
于 2011-05-24T14:28:38.743 回答
3
使用 win32api.keybd_event 得到了一些有用的东西。
看起来 SendInput 会更安全，但 pywin32 不包含它。
[编辑：在下面接受的答案中查看 SendInput 版本。如果有人更喜欢使用 sendkeys，我会在此处留下此消息。jh]
此页面有帮助：http ://social.msdn.microsoft.com/Search/en-us/?Query=keybd_event
有效的代码：
import win32api;
import win32ui
PyCWnd1 = win32ui.FindWindow( None, "an_app" )
PyCWnd1.SetForegroundWindow()
PyCWnd1.SetFocus()
win32api.keybd_event(0x12, 0, ) # Alt
win32api.keybd_event(0x12, 0, 2 ) # Alt release
win32api.keybd_event(0x46, 0, ) # F
win32api.keybd_event(0x52, 0, ) # R
这会在应用程序中执行文件 > 重新加载。如果应用程序被最小化则不起作用
在不释放 Alt 的情况下，运行此命令后，键盘的行为就像我按住 Alt 键一样！似乎不需要释放其他键
于 2009-12-01T06:39:13.620 回答
0
您需要 keybd_event API。我的 PushKeys 程序的语法与 SendKeys 兼容，并且内置了睡眠功能。虽然它不是 Python 中的，但它应该很容易翻译（它已被翻译成多种语言 - 至少它应该向您展示要使用的 API） . 此处提供多种语言版本 。
于 2009-12-01T03:21:16.980 回答