## windows 鼠标事件 > 后台发送事件要注意： SendMessage：游戏窗口在前台时会发送失败，在后台就一定会发送成功。 PostMessage：可能丢失，因为是异步的。 ```python # 定义鼠标事件的常量 MOUSEEVENTF_MOVE = 0x0001 # 鼠标移动 MOUSEEVENTF_LEFTDOWN = 0x0002 # 鼠标左键按下 MOUSEEVENTF_LEFTUP = 0x0004 # 鼠标左键抬起 MOUSEEVENTF_ABSOLUTE = 0x8000 # 绝对坐标 MOUSEEVENTF_RIGHTDOWN = 0x0008 # 右键按下 MOUSEEVENTF_RIGHTUP = 0x0010 # 右键抬起 # 定义 INPUT 和 MOUSEINPUT 结构体 class MOUSEINPUT(ctypes.Structure): _fields_ = [("dx", ctypes.c_long), ("dy", ctypes.c_long), ("mouseData", ctypes.c_ulong), ("dwFlags", ctypes.c_ulong), ("time", ctypes.c_ulong), ("dwExtraInfo", ctypes.POINTER(ctypes.c_ulong))] class INPUT(ctypes.Structure): _fields_ = [("type", ctypes.c_ulong), ("mi", MOUSEINPUT)] # 将坐标转换为绝对坐标 def absolute_coords(x, y): screen_width = ctypes.windll.user32.GetSystemMetrics(0) screen_height = ctypes.windll.user32.GetSystemMetrics(1) abs_x = int(x * 65535 / screen_width) abs_y = int(y * 65535 / screen_height) return abs_x, abs_y # 鼠标移动鼠标移动到指定位置 def move_mouse(x, y): abs_x, abs_y = absolute_coords(x, y) mi_move = MOUSEINPUT(dx=abs_x, dy=abs_y, mouseData=0, dwFlags=MOUSEEVENTF_MOVE | MOUSEEVENTF_ABSOLUTE, time=0, dwExtraInfo=None) input_move = INPUT(type=0, mi=mi_move) ctypes.windll.user32.SendInput(1, ctypes.byref(input_move), ctypes.sizeof(input_move)) # 模拟鼠标左键点击 def mouse_left_click(): # 模拟鼠标左键按下 mi_down = MOUSEINPUT(dx=0, dy=0, mouseData=0, dwFlags=MOUSEEVENTF_LEFTDOWN, time=0, dwExtraInfo=None) input_down = INPUT(type=0, mi=mi_down) ctypes.windll.user32.SendInput(1, ctypes.byref(input_down), ctypes.sizeof(input_down)) # 模拟鼠标左键抬起 mi_up = MOUSEINPUT(dx=0, dy=0, mouseData=0, dwFlags=MOUSEEVENTF_LEFTUP, time=0, dwExtraInfo=None) input_up = INPUT(type=0, mi=mi_up) ctypes.windll.user32.SendInput(1, ctypes.byref(input_up), ctypes.sizeof(input_up)) # 模拟鼠标右键点击 def mouse_right_click(): mi_down = MOUSEINPUT(dx=0, dy=0, mouseData=0, dwFlags=MOUSEEVENTF_RIGHTDOWN, time=0, dwExtraInfo=None) input_down = INPUT(type=0, mi=mi_down) ctypes.windll.user32.SendInput(1, ctypes.byref(input_down), ctypes.sizeof(input_down)) mi_up = MOUSEINPUT(dx=0, dy=0, mouseData=0, dwFlags=MOUSEEVENTF_RIGHTUP, time=0, dwExtraInfo=None) input_up = INPUT(type=0, mi=mi_up) ctypes.windll.user32.SendInput(1, ctypes.byref(input_up), ctypes.sizeof(input_up)) # 鼠标左键点击 def send_input_mouse_left_click(x, y): move_mouse(x, y) time.sleep(0.01) mouse_left_click() # 鼠标右键点击 def send_input_mouse_right_click(x, y): move_mouse(x, y) time.sleep(0.01) mouse_right_click() # 鼠标左键点击当前位置 def click_left_current_position(): x, y = win32api.GetCursorPos() win32api.mouse_event(win32con.MOUSEEVENTF_LEFTDOWN, x, y, 0, 0) time.sleep(0.05) win32api.mouse_event(win32con.MOUSEEVENTF_LEFTUP, x, y, 0, 0) # 鼠标右键点击当前位置 def click_right_current_position(): x, y = win32api.GetCursorPos() win32api.mouse_event(win32con.MOUSEEVENTF_RIGHTDOWN, x, y, 0, 0) time.sleep(0.05) win32api.mouse_event(win32con.MOUSEEVENTF_RIGHTUP, x, y, 0, 0) # 向上滚动鼠标滚轮 def scroll_mouse_up(amount): win32api.mouse_event(win32con.MOUSEEVENTF_WHEEL, 0, 0, amount, 0) # 向下滚动鼠标滚轮 def scroll_mouse_down(amount): win32api.mouse_event(win32con.MOUSEEVENTF_WHEEL, 0, 0, -amount, 0) # 左键点击指定 hwnd def mouse_left_click_hwnd(hwnd, x, y): with lock: x = int(x) y = int(y) win32api.SendMessage(hwnd, 0x0201, 1, (y << 16) | x) time.sleep(0.02) win32api.SendMessage(hwnd, 0x0202, 0, (y << 16) | x) # 右键点击指定 hwnd def mouse_right_click_hwnd(hwnd, x, y): with lock: x = int(x) y = int(y) win32api.SendMessage(hwnd, 0x0204, 1, (y << 16) | x) win32api.SendMessage(hwnd, 0x0205, 0, (y << 16) | x) # 中键点击指定 hwnd def mouse_middle_click_hwnd(hwnd, x, y): with lock: x = int(x) y = int(y) l_param = (y << 16) | x ctypes.windll.user32.PostMessageW(hwnd, 0x0207, win32con.MK_MBUTTON, l_param) ctypes.windll.user32.PostMessageW(hwnd, 0x0208, 0, l_param) # 移动指定 hwnd def move_mouse_hwnd(hwnd, x, y): with lock: x = int(x) y = int(y) ctypes.windll.user32.PostMessageW(hwnd, 0x0200, 0, (y << 16) | x) # 指定窗口和位置发送鼠标滚轮滚动事件， scroll_amount 向上滚动为正值，向下滚动为负值，120为一个单位。 def mouse_scroll_hwnd(hwnd, x, y, scroll_amount=120): with lock: x = int(x) y = int(y) """ 在指定窗口和位置发送鼠标滚轮滚动事件 :param hwnd: 目标窗口的句柄 :param x: 滚轮滚动的位置的 x 坐标（相对于窗口） :param y: 滚轮滚动的位置的 y 坐标（相对于窗口） :param scroll_amount: 滚动的幅度，默认为 120（一个单位滚动） """ w_param = (scroll_amount << 16) l_param = (y << 16) | x ctypes.windll.user32.PostMessageW(hwnd, 0x020A, w_param, l_param) ```

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