点击 tkinter 窗口

Question

函数复制自Tying to set non-interactable (click-through) overlay with TkInter

不仅窗口不能点击，png也不透明。 PNG在这里：https://drive.google.com/file/d/1tlLl2hjPq38mc_c_PpMhkKDlP1HqvDY5/view

这是窗口的样子：

我错过了什么？

from tkinter import*
import win32gui

from win32gui import GetForegroundWindow, ShowWindow, FindWindow, SetWindowLong, GetWindowLong, SetLayeredWindowAttributes
from win32con import SW_MINIMIZE, WS_EX_LAYERED, WS_EX_TRANSPARENT, GWL_EXSTYLE

def setClickthrough(hwnd):
   try:
       styles = GetWindowLong(hwnd, GWL_EXSTYLE)
       styles |= WS_EX_LAYERED | WS_EX_TRANSPARENT
       SetWindowLong(hwnd, GWL_EXSTYLE, styles)
       SetLayeredWindowAttributes(hwnd, 0, 255, win32con.LWA_ALPHA)
   except Exception as e:
       print(e)

root = Tk()
root.geometry("100x100")


root.overrideredirect(1)

root.attributes('-topmost', 1)
pic = PhotoImage(file=r'on2.png')
root.wm_attributes("-transparentcolor", 'white')

boardbutton = Label(root, image=pic, bd=0,
                    bg='white')
boardbutton.pack()
setClickthrough(root.winfo_id())
root.mainloop()

Answer 1

我已经获取了linked question 的代码并使其工作。见以下代码：

from tkinter import *
from PIL import Image, ImageTk
import win32gui
import win32con

def setClickthrough(hwnd):
    print("setting window properties")
    try:
        styles = win32gui.GetWindowLong(hwnd, win32con.GWL_EXSTYLE)
        styles = win32con.WS_EX_LAYERED | win32con.WS_EX_TRANSPARENT
        win32gui.SetWindowLong(hwnd, win32con.GWL_EXSTYLE, styles)
        win32gui.SetLayeredWindowAttributes(hwnd, 0, 255, win32con.LWA_ALPHA)
    except Exception as e:
        print(e)

# Dimensions
width = 1920 #self.winfo_screenwidth()
height = 1080 #self.winfo_screenheight()

root = Tk()
root.geometry('%dx%d' % (width, height))
root.title("Applepie")
root.attributes('-transparentcolor', 'white', '-topmost', 1)
root.config(bg='white') 
root.attributes("-alpha", 0.25)
root.wm_attributes("-topmost", 1)
bg = Canvas(root, width=width, height=height, bg='white')

setClickthrough(bg.winfo_id())

frame = ImageTk.PhotoImage(file="example.png")
bg.create_image(1920/2, 1080/2, image=frame)
bg.pack()
root.mainloop()

您的尝试和工作示例之间的重要区别似乎是使用了画布而不是窗口的hwnd。

---

我不能完全按照你的意愿去做，但我提供了一些代码来输出这个结果，希望能满足你的需求。额外的代码只是删除了装饰（overrideredirect(1)）并将窗口大小调整为 img 大小，并将其放置在屏幕中间。：

from tkinter import *
from PIL import Image, ImageTk
import win32gui
import win32con

def setClickthrough(hwnd):
    print("setting window properties")
    try:
        styles = win32gui.GetWindowLong(hwnd, win32con.GWL_EXSTYLE)
        styles = win32con.WS_EX_LAYERED | win32con.WS_EX_TRANSPARENT
        win32gui.SetWindowLong(hwnd, win32con.GWL_EXSTYLE, styles)
        win32gui.SetLayeredWindowAttributes(hwnd, 0, 255, win32con.LWA_ALPHA)
    except Exception as e:
        print(e)

def size_position_for_picture():
    bbox = bg.bbox(img_id)
    w,h = bbox[2]-bbox[0],bbox[3]-bbox[1]
    x,y = sw/2-w/2,sh/2-h/2
    root.geometry('%dx%d+%d+%d' % (w,h, x,y))
    bg.configure(width=w,height=h)
    

root = Tk()

sw = root.winfo_screenwidth()
sh = root.winfo_screenheight()

root.overrideredirect(1)
root.attributes("-alpha", 0.75)
root.attributes('-transparentcolor', 'white', '-topmost', 1)
bg = Canvas(root,bg='white',highlightthickness=0)
root.config(bg='white')

setClickthrough(bg.winfo_id())

frame = ImageTk.PhotoImage(file="example.png")
img_id = bg.create_image(0,0, image=frame,anchor='nw')
bg.pack()

size_position_for_picture()
setClickthrough(bg.winfo_id())


root.mainloop()

Answer 2

我的应用程序也有一个函数，代码看起来与你的非常相似，只是做了一些小的调整。你可以试试看：

def set_clickthrough(hwnd, root):
    # Get window style and perform a 'bitwise or' operation to make the style layered and transparent, achieving
    # the clickthrough property
    l_ex_style = win32gui.GetWindowLong(hwnd, win32con.GWL_EXSTYLE)
    l_ex_style |= win32con.WS_EX_TRANSPARENT | win32con.WS_EX_LAYERED
    win32gui.SetWindowLong(hwnd, win32con.GWL_EXSTYLE, l_ex_style)

    # Set the window to be transparent and appear always on top
    win32gui.SetLayeredWindowAttributes(hwnd, win32api.RGB(0, 0, 0), 190, win32con.LWA_ALPHA)  # transparent
    win32gui.SetWindowPos(hwnd, win32con.HWND_TOPMOST, root.winfo_x(), root.winfo_y(), 0, 0, 0)

还有，以下功能可以再次禁用点击

def disable_clickthrough(hwnd, root):
    # Calling the function again sets the extended style of the window to zero, reverting to a standard window
    win32api.SetWindowLong(hwnd, win32con.GWL_EXSTYLE, 0)
    # Remove the always on top property again, in case always on top was set to false in options
    win32gui.SetWindowPos(hwnd, win32con.HWND_NOTOPMOST, root.winfo_x(), root.winfo_y(), 0, 0, 0)

您可以通过调用win32gui.FindWindow(None, root.title())获取窗口句柄（hwnd）。