from ctypes import WINFUNCTYPE, windll prototype = WINFUNCTYPE(None) def callback_function(): print("Callback function is executed") callback = prototype(callback_function) windll.user32.MessageBoxW(None, "Press OK to call callback function", "Callback Demo", 0) callback()
from ctypes import WINFUNCTYPE, windll prototype = WINFUNCTYPE(None, ctypes.c_int, ctypes.c_int) def callback_function(x, y): print(f"Callback function is called with x={x}, y={y}") callback = prototype(callback_function) windll.user32.EnumWindows(callback, 0)In this example, we are using the EnumWindows function from the user32 library. This function expects a callback function as an argument. We define the callback function prototype using WINFUNCTYPE. The callback function has two arguments, which are integers. We create a callback object using the prototype and the callback function definition. Finally, we call the EnumWindows function and pass the callback object as an argument. Library: Windll Based on the examples, it is evident that the Python ctypes WINFUNCTYPE function belongs to the ctypes package. The Win32api also supports WINFUNCTYPE function.