本文共 4437 字，大约阅读时间需要 14 分钟。

这里用python中的pywin32

pip install pywin32

DC在pywin32中是一个重要概念。windows不允许程序直接访问硬件，所有的操作都需要通过一个设备上下文环境。屏幕上的每个窗口都对应一个DC。DC相当于一个视频缓冲区，对这个缓冲区的操作，会表现在这个缓冲区对应的屏幕窗口上。

import win32con, win32ui, win32gui,win32api, win32processimport psutilimport osclass Ergodic():    def __init__(self):        self.hwnd_title = dict()    def get_all_hwnd(self, hwnd, mouse):        #if win32gui.IsWindow(hwnd) and win32gui.IsWindowEnabled(hwnd) and win32gui.IsWindowVisible(hwnd):        if win32gui.IsWindowVisible(hwnd) and win32gui.IsWindowEnabled(hwnd):            self.hwnd_title.update({
   hwnd: win32gui.GetWindowText(hwnd)+';'+win32gui.GetClassName(hwnd)})    '''def get_all_hwnd1(self, hwnd, mouse):        # if win32gui.IsWindow(hwnd) and win32gui.IsWindowEnabled(hwnd) and win32gui.IsWindowVisible(hwnd):        if win32gui.IsWindowVisible(hwnd) and win32gui.IsWindowEnabled(hwnd):            self.windows.update({hwnd: win32gui.GetWindowText(hwnd) + ';' + win32gui.GetClassName(hwnd)})    def get_child_window(self,hwnd):        self.windows = dict()        win32gui.EnumChildWindows(hwnd, self.get_all_hwnd1, self.windows)        print(self.windows)        return self.windows'''    def __call__(self, *args, **kwargs):        win32gui.EnumWindows(self.get_all_hwnd, 0)        for h, t in self.hwnd_title.items():            if t is not "":                print(h, t)        return self.hwnd_titleif __name__ == '__main__':    ergo =Ergodic()    ergo()

2.查找窗口、截图、获取进程ID，结合psutil获取进程详细信息、杀死进程

import win32con, win32ui, win32gui,win32api, win32processimport psutilimport osimport timefrom PyQt5.QtWidgets import QApplicationfrom PyQt5.QtGui import *def get_windows(windowsname,filename):    # 获取窗口句柄，如果你的输入参数是handle的话直接跳过这一步    handle = win32gui.FindWindow(None,windowsname)    #获取窗口进程    threadpid, procpid = win32process.GetWindowThreadProcessId(handle)    pp = psutil.Process(procpid)    #可以参考psutil获取进程详细信息    print(pp.exe(),pp.name(),pp.status())    # 将窗口放在前台，并激活该窗口（窗口不能最小化）    #win32gui.SetForegroundWindow(handle)    # 获取窗口DC    hdDC = win32gui.GetWindowDC(handle)    # 根据句柄创建一个DC    newhdDC = win32ui.CreateDCFromHandle(hdDC)    # 创建一个兼容设备内存的DC    saveDC = newhdDC.CreateCompatibleDC()    # 创建bitmap保存图片    saveBitmap = win32ui.CreateBitmap()    # 获取窗口的位置信息    left, top, right, bottom = win32gui.GetWindowRect(handle)    # 窗口长宽    width = right - left    height = bottom - top    # bitmap初始化    saveBitmap.CreateCompatibleBitmap(newhdDC, width, height)    saveDC.SelectObject(saveBitmap)    saveDC.BitBlt((0, 0), (width, height), newhdDC, (0, 0), win32con.SRCCOPY)    saveBitmap.SaveBitmapFile(saveDC, filename)    #释放内存    win32gui.DeleteObject(saveBitmap.GetHandle())    saveDC.DeleteDC()    #杀死该进程及关闭窗口    os.popen('taskkill.exe /F /pid:' + str(procpid))

def screenshot(handle, filename):    app = QApplication(sys.argv)    screen = QApplication.primaryScreen()    img = screen.grabWindow(handle).toImage()    img.save(filename)def get_window_from_cursor():    prevWindow = None    curX, curY = win32gui.GetCursorPos()    handle = win32gui.WindowFromPoint((curX, curY))    prevWindow = handle    window_name = win32gui.GetWindowText(handle)    r = get_windowsinfo(window_name)    print(r)    hightligt_window(handle)    screenshot(handle,'pp.png')    refreshWindow(handle)def kill_pro(handle):    threadpid, procpid = win32process.GetWindowThreadProcessId(handle)    os.popen('taskkill.exe /F /pid:' + str(procpid))    #杀死该进程及关闭窗口def hightligt_window(handle):    left, top, right, bottom = win32gui.GetWindowRect(handle)    rectanglePen = win32gui.CreatePen(win32con.PS_SOLID, 3, win32api.RGB(255, 0, 0))    windowDc = win32gui.GetWindowDC(handle)    if windowDc:        prevPen = win32gui.SelectObject(windowDc, rectanglePen)        prevBrush = win32gui.SelectObject(windowDc, win32gui.GetStockObject(win32con.HOLLOW_BRUSH))        win32gui.Rectangle(windowDc, 0, 0, right - left, bottom - top)        win32gui.SelectObject(windowDc, prevPen)        win32gui.SelectObject(windowDc, prevBrush)        win32gui.ReleaseDC(handle, windowDc)#刷新窗口的函数：def refreshWindow(handle):    win32gui.InvalidateRect(handle, None, True)    win32gui.UpdateWindow(handle)    win32gui.RedrawWindow(handle,        None,        None,        win32con.RDW_FRAME|            win32con.RDW_INVALIDATE|            win32con.RDW_UPDATENOW|            win32con.RDW_ALLCHILDREN)

转载地址：http://taben.baihongyu.com/