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I am developing a python application and I want to get the
HWND
of each open windows. I need the name of the windows and the
HWND
to filter the list to manage some specifics windows, moving and resizing them.
I have tried to do it myself looking information around but I did not get the correct piece of code. I tried with this
code
but I only get the title of each windows (that is great), but I need the
HWND
too.
import ctypes
import win32gui
EnumWindows = ctypes.windll.user32.EnumWindows
EnumWindowsProc = ctypes.WINFUNCTYPE(ctypes.c_bool, ctypes.POINTER(ctypes.c_int), ctypes.POINTER(ctypes.c_int))
GetWindowText = ctypes.windll.user32.GetWindowTextW
GetWindowTextLength = ctypes.windll.user32.GetWindowTextLengthW
IsWindowVisible = ctypes.windll.user32.IsWindowVisible
titles = []
def foreach_window(hwnd, lParam):
if IsWindowVisible(hwnd):
length = GetWindowTextLength(hwnd)
buff = ctypes.create_unicode_buffer(length + 1)
GetWindowText(hwnd, buff, length + 1)
titles.append((hwnd, buff.value))
return True
EnumWindows(EnumWindowsProc(foreach_window), 0)
for i in range(len(titles)):
print(titles)[i]
win32gui.MoveWindow((titles)[5][0], 0, 0, 760, 500, True)
There is a error here:
win32gui.MoveWindow((titles)[5][0], 0, 0, 760, 500, True)
TypeError: The object is not a PyHANDLE object
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–
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You mixed up ctypes
and win32gui
.
The hwnd
you've got is obtained via ctypes
and is a LP_c_long
object. That's why win32gui.MoveWindow
didn't accept it. You should pass it to
ctypes.windll.user32.MoveWindow(titles[5][0], 0, 0, 760, 500, True)
If you want to use win32gui.MoveWindow
, you can use python function as callback directly.
For example,
import win32gui
def enumHandler(hwnd, lParam):
if win32gui.IsWindowVisible(hwnd):
if 'Stack Overflow' in win32gui.GetWindowText(hwnd):
win32gui.MoveWindow(hwnd, 0, 0, 760, 500, True)
win32gui.EnumWindows(enumHandler, None)
–
–
Your problem (now that martineau has fixed your original problem of not storing the HWND
values at all) is that you're trying to mix ctypes
and win32gui
.
You can do that if you know what you're doing—but if not, just don't do it.
If you want to get window handles you can use with win32gui
, use win32gui.EnumWindows
instead of calling the raw function out of the user32
DLL.
Just modify the piece of code for getting all titles so it does something like this:
titles.append((hwnd, buff.value))
The titles
list will then be a list of tuples containing the HWND and the title text.
–
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