使用 win32com.client 的 AppActivate 根据 ID 将焦点设置到窗口

Question

I've tried the following, but focus isn't returned to the program that had focus when the script was run:

import win32com.client
import win32gui

current = win32gui.GetForegroundWindow()

shell = win32com.client.Dispatch("WScript.Shell")

shell.AppActivate('Console2')

shell.SendKeys('{UP}{ENTER}')

shell.AppActivate(str(current))

Answer 1

It turns out that win32gui.GetForegroundWindow() returns the window handle and not the process ID.

win32process.GetWindowThreadProcessId(hwnd) can be used to get the thread ID and process ID from the handle.

import win32com.client
import win32gui
import win32process

hwnd = win32gui.GetForegroundWindow()

_, pid = win32process.GetWindowThreadProcessId(hwnd)

shell = win32com.client.Dispatch("WScript.Shell")

shell.AppActivate('Console2')
shell.SendKeys('{UP}{ENTER}')

shell.AppActivate(pid)

Answer 2

Not enough rep to comment this

In addition to Acorn's answer (so long ago), you should now be able to use SetFocus(handle).

import win32com.client
import win32gui

hwnd = win32gui.GetForegroundWindow()

shell = win32com.client.Dispatch("WScript.Shell")

shell.AppActivate('Console2')
shell.SendKeys('{UP}{ENTER}')

win32gui.SetForegroundWindow(hwnd)

Source: http://timgolden.me.uk/pywin32-docs/win32gui__SetFocus_meth.html