python根据进程名获取窗口句柄hwnd

1、安装pywin32
pip install -i https://pypi.tuna.tsinghua.edu.cn/simple pywin32

from ctypes import *
import win32con
import win32gui
import win32api
import win32process
import subprocess
import time

def find_process(exe_name):
    hwnd_list = []
    win32gui.EnumWindows(lambda _hwnd, _hwnd_list: _hwnd_list.append(_hwnd), hwnd_list) 
    app_hwnd = None
    app_pid = None
    for hwnd in hwnd_list:
        app_pid,procname= get_process_name(hwnd)         
        if procname.find(exe_name) > 0:        
            app_hwnd = hwnd 
            print(procname)      
            break
    if not app_hwnd:    
        print("没有找到hwnd")    
    return app_pid, app_hwnd     

def get_process_name(hwnd):
    try:
        threadpid, procpid = win32process.GetWindowThreadProcessId(hwnd)
        mypyproc = win32api.OpenProcess(win32con.PROCESS_ALL_ACCESS, False, procpid)
        procname = win32process.GetModuleFileNameEx(mypyproc, 0)        
        return procpid,procname
    except:
        return {0,"noprocname"}




def main():
    # subprocess.Popen(r"C:\Program Files (x86)\Foxit Software\Foxit PhantomPDF\FoxitPhantomPDF.exe")
    # time.sleep(5)    
    # app_pid, app_hwnd =find_process("FoxitPhantomPDF.exe")
    app_pid, app_hwnd =find_process("WeChat.exe")
    if app_hwnd != None:
        print("找到了")    
        win32gui.SetForegroundWindow(app_hwnd)  


if __name__ == '__main__':
    main()