python win32api MOUSEEVENTF_MOVE 未按预期工作

Question

这是代码

# set mouse position to absolute position 674, 499
win32api.SetCursorPos((674, 499))
# add 100 to current x position which will be 674 + 100 = 774
# will not change y position it will be 499 
win32api.mouse_event(win32con.MOUSEEVENTF_MOVE, 100 ,0)
# print the position
print(f'The final position is {win32api.GetCursorPos()}')

我在循环中运行了一段时间的代码，这是 output：

The final position is (864, 499)
The final position is (983, 499)
The final position is (984, 499)
The final position is (983, 499)
The final position is (984, 499)
The final position is (983, 499)
The final position is (983, 499)
The final position is (984, 499)
The final position is (983, 499)
The final position is (984, 499)
The final position is (983, 499)
The final position is (983, 499)
The final position is (984, 499)
The final position is (983, 499)
The final position is (984, 499)
The final position is (983, 499)
The final position is (864, 499)
The final position is (864, 499)
The final position is (882, 499)
The final position is (864, 499)
The final position is (984, 499)

在脚本运行中，我没有移动鼠标（脚本运行期间我的手没有握住鼠标）

在我的理解中，output 永远是（774, 499），但它给了我一个毫无预兆的惊喜，是因为我对方法的理解错误还是与其他事情有关？ 请帮忙。 谢谢你们。

Answer 1

[MS.Docs]：mouse_event function (winuser.h)其中指出：

注意此 function 已被取代。 请改用SendInput 。

还包含有关如何在备注部分传递这些值的详细信息。

选项（相对于当前位置移动鼠标）：

1. 由于您已经在使用GetCursorPos / SetCursorPos ，您可以：

   • 获取当前 position

   • 添加增量

   • 设置新 position

   从我所关心的情况来看，这是最有意义的

2. 使用发送输入。 但是PyWin32没有包装它，所以你需要通过CTypes调用它，但这需要一些更深入的知识（ C ， Python内部， ZA05B798442A1AF567F798BC01样板代码）和EBA01。 [SO]：如何使用 ctypes 将 SendInput function 包装到 python就是这样

3. 使用其他第³方模块。 使用[PyPI]: pynput ，您可以在几行代码中完成此操作。 可能PyWinAuto是另一个候选者

4. 继续向mouse_event方向挖掘（尽管我认为这毫无意义）

代码00.py

#!/usr/bin/env python

import msvcrt
import random
import sys
import time

import win32con as wcon
import win32api as wapi
import win32gui as wgui


def transform_relative(val, tres0, tres1, acc, speed):
    ret = val
    val = abs(val)
    if val > tres0 and acc:
        ret *= 2
    if val > tres1 and acc == 2:
        ret *= 2
    return round(ret * speed / 10)


def set_pos_mouse_event(x, y, absolute_coordinates=True):
    flags = wcon.MOUSEEVENTF_MOVE
    if absolute_coordinates: 
        flags |= wcon.MOUSEEVENTF_ABSOLUTE
        normx = round(x * 0xFFFF / (wapi.GetSystemMetrics(wcon.SM_CXSCREEN) - 1))
        normy = round(y * 0xFFFF / (wapi.GetSystemMetrics(wcon.SM_CYSCREEN) - 1))
    else:  # @TODO - cfati: Not working yet!!!
        tres0, tres1, acc = wgui.SystemParametersInfo(wcon.SPI_GETMOUSE)
        speed = wgui.SystemParametersInfo(wcon.SPI_GETMOUSESPEED)
        #print(tres0, tres1, acc, speed)
        normx = transform_relative(x, tres0, tres1, acc, speed)
        normy = transform_relative(y, tres0, tres1, acc, speed)
    print(f"Move with: ({x}, {y}) ({normx}, {normy})")
    wapi.mouse_event(flags, normx, normy)


def set_pos_cursor_pos(x, y, absolute_coordinates=True):
    print(f"Move with: ({x}, {y})")
    if absolute_coordinates:
        wapi.SetCursorPos((x, y))
    else:
        curx, cury = wapi.GetCursorPos()
        wapi.SetCursorPos((curx + x, cury + y))


def main(*argv):
    maxx = wapi.GetSystemMetrics(wcon.SM_CXSCREEN) - 1
    maxy = wapi.GetSystemMetrics(wcon.SM_CYSCREEN) - 1
    #print(maxx, maxy)
    abs_coords = 0
    set_pos = set_pos_cursor_pos
    #set_pos = set_pos_mouse_event
    print(f"Using function: {set_pos.__name__}")
    print(f"Absolute coordinates: {'True' if abs_coords else 'False'}")
    print(f"Start position: {wapi.GetCursorPos()}")
    while not msvcrt.kbhit():
        print()
        #set_pos_mouse_event(100, 100, 1)
        #print(f"{wapi.GetCursorPos()}")
        x = random.randint(0, maxx)
        y = random.randint(0, maxy)
        if not abs_coords:
            curx, cury = wapi.GetCursorPos()
            x -= curx
            y -= cury
        set_pos(x, y, absolute_coordinates=abs_coords)
        print(f"Final position: {wapi.GetCursorPos()}")
        time.sleep(0.5)


if __name__ == "__main__":
    print("Python {:s} {:03d}bit on {:s}\n".format(" ".join(elem.strip() for elem in sys.version.split("\n")),
                                                   64 if sys.maxsize > 0x100000000 else 32, sys.platform))
    rc = main(*sys.argv[1:])
    print("\nDone.")
    sys.exit(rc)

备注：

• 我选择了#1。 ( set_pos_cursor_pos )。 它工作正常

• 我也尝试了#4。 ( set_pos_mouse_event )

  • 我只能完成一半（ MOUSEEVENTF_ABSOLUTE ）。 我尝试通过执行URL （在transform_relative中）中的步骤来完成另一半（您感兴趣），但它不起作用

• 我选择概念清晰而不是常识（性能）。 一些API （例如GetSystemMetrics ）是从多次执行的函数中调用的。 这是没有意义的，对于生产代码，它们应该只被调用一次（在开始时），并且返回的值作为 arguments 传递给需要它们的 function

Output （2 个有效的变体）：

 [cfati@CFATI-5510-0:e:\Work\Dev\StackOverflow\q073428381]> "e:\Work\Dev\VEnvs\py_pc064_03.09_test0\Scripts\python.exe"./code00.py Python 3.9.9 (tags/v3.9.9:ccb0e6a, Nov 15 2021, 18:08:50) [MSC v.1929 64 bit (AMD64)] 064bit on win32 Using function: set_pos_cursor_pos Absolute coordinates: False Start position: (583, 610) Move with: (-461, 103) Final position: (122, 713) Move with: (44, -324) Final position: (166, 389) Move with: (1153, 418) Final position: (1319, 807) Move with: (390, 118) Final position: (1709, 925) Move with: (-860, 127) Final position: (849, 1052) Move with: (127, -202) Final position: (976, 850) Move with: (-84, -605) Final position: (892, 245) Move with: (86, 330) Final position: (978, 575) Move with: (-167, 170) Final position: (811, 745) Move with: (-63, -233) Final position: (748, 512) Done. [cfati@CFATI-5510-0:e:\Work\Dev\StackOverflow\q073428381]> "e:\Work\Dev\VEnvs\py_pc064_03.09_test0\Scripts\python.exe"./code00.py Python 3.9.9 (tags/v3.9.9:ccb0e6a, Nov 15 2021, 18:08:50) [MSC v.1929 64 bit (AMD64)] 064bit on win32 Using function: set_pos_mouse_event Absolute coordinates: True Start position: (748, 512) Move with: (1076, 803) (36746, 48772) Final position: (1076, 803) Move with: (1435, 572) (49006, 34741) Final position: (1435, 572) Move with: (197, 820) (6728, 49804) Final position: (197, 820) Move with: (1153, 522) (39376, 31705) Final position: (197, 820) Move with: (12, 29) (410, 1761) Final position: (12, 29) Move with: (150, 176) (5123, 10690) Final position: (150, 176) Move with: (882, 37) (30121, 2247) Final position: (882, 37) Move with: (582, 195) (19876, 11844) Final position: (582, 195) Move with: (1066, 810) (36405, 49197) Final position: (1066, 810) Move with: (1888, 487) (64476, 29579) Final position: (1888, 487) Done.