# Prepare WM_COPYDATA structure COPYDATA = struct.pack("PPI", 0, command, len(data)+1) win32gui.SendMessage(hwnd, win32con.WM_COPYDATA, 0, COPYDATA)
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# For commands requiring data (like CALL) if data: COPYDATA_DATA = struct.pack("PPI", 0, data, len(data)+1) win32gui.SendMessage(hwnd, win32con.WM_COPYDATA, 0, COPYDATA_DATA) # Prepare WM_COPYDATA structure COPYDATA = struct