All,
Looking for help on making my toplevel window backgrounds opaque or
transparent. I've seen sparse mention of setting the alpha property of the
toplevel, but the only other mention I've seen in any documentation has to do
with canvas widgets. I'm running python 2.4 and the toplevel returns an error
when I try to set the alpha param.
>>> from Tkinter import *
>>> root = Tk()
>>> root.wm_attributes('-alpha', 0.5)
Traceback (most recent call last):
File "<pyshell#6>", line 1, in ?
root.wm_attributes('alpha', 0.5)
File "c:\python24\lib\lib-tk\Tkinter.py", line 1386, in wm_attributes
return self.tk.call(args)
TclError: wrong # args: should be "wm attributes window ?-disabled
?bool?? ?-toolwindow ?bool?? ?-topmost ?bool??"
I first saw this referenced on effbot.org and was hoping to use it.
http://effbot.org/tkinterbook/wm.htm
In Win32 programming I know this is a two step process but haven't found any
equiv documentation for Tkinter and using the Python win32 modules doesn't work
as seen here for Notepad.
import win32con
import win32api
import win32gui
import winxpgui
# Notepad window handle
hWND = 1050292
# Prep the window for transparency...creates buffer of some sort in
Windows
win32gui.SetWindowLong (hWND, win32con.GWL_EXSTYLE,
win32gui.GetWindowLong (hWND, win32con.GWL_EXSTYLE ) | win32con.WS_EX_LAYERED )
# Get the window background color
bgColor = win32api.GetSysColor(win32con.COLOR_WINDOW)
r = bgColor & 0xFF
g = (bgColor & 0x0000FF00) >> 8
b = (bgColor & 0x00FF0000) >> 16
# Re-compute the RGB value to pass to the SetLayeredWindowAttributes
function
winxpgui.SetLayeredWindowAttributes(hWND, win32api.RGB(r, g, b), 50,
win32con.LWA_COLORKEY|win32con.LWA_ALPHA)
Any pointers would be greatly appreciated!
Thanks,
Bobby
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