Question

This isn’t as malicious as it sounds, I want to get the current size of their windows, not look at what is in them. The purpose is to figure out that if every other window is fullscreen then I should start up like that too. Or if all the other processes are only 800×600 despite there being a huge resolution then that is probably what the user wants. Why make them waste time and energy resizing my window to match all the others they have? I am primarily a Windows devoloper but it wouldn’t upset me in the least if there was a cross platform way to do this.

Answer 1

Using hints from WindowMover article and Nattee Niparnan’s blog post I managed to create this:

import win32con import win32gui  def isRealWindow(hWnd):     '''Return True iff given window is a real Windows application window.'''     if not win32gui.IsWindowVisible(hWnd):         return False     if win32gui.GetParent(hWnd) != 0:         return False     hasNoOwner = win32gui.GetWindow(hWnd, win32con.GW_OWNER) == 0     lExStyle = win32gui.GetWindowLong(hWnd, win32con.GWL_EXSTYLE)     if (((lExStyle & win32con.WS_EX_TOOLWINDOW) == 0 and hasNoOwner)       or ((lExStyle & win32con.WS_EX_APPWINDOW != 0) and not hasNoOwner)):         if win32gui.GetWindowText(hWnd):             return True     return False  def getWindowSizes():     '''     Return a list of tuples (handler, (width, height)) for each real window.     '''     def callback(hWnd, windows):         if not isRealWindow(hWnd):             return         rect = win32gui.GetWindowRect(hWnd)         windows.append((hWnd, (rect[2] - rect[0], rect[3] - rect[1])))     windows = []     win32gui.EnumWindows(callback, windows)     return windows  for win in getWindowSizes():     print win 

You need the Win32 Extensions for Python module for this to work.

EDIT: I discovered that GetWindowRect gives more correct results than GetClientRect. Source has been updated.