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MacOS + Tcl/Tk 9.x Transparency fix #13

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MacOS + Tcl/Tk 9.x Transparency fix #13

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92e5bce
attempt stylemask
ajkessel Jun 16, 2026
31790f0
tk 9fixes
ajkessel Jun 16, 2026
ebf10db
fix stylemask
ajkessel Jun 16, 2026
fa322a3
limit wm_attribute reapplication to MacOS
ajkessel Jun 17, 2026
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15 changes: 12 additions & 3 deletions customtkinter/windows/widgets/ctk_floating_frame.py
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Original file line number Diff line number Diff line change
Expand Up @@ -53,16 +53,23 @@ def __init__(self,
self._toplevel.attributes("-topmost", True)
self._toplevel.attributes("-alpha", 1.0 - self._theme_ff_info["transparency"])
self._toplevel.resizable(width=True, height=True)
self._toplevel.overrideredirect(True)

if sys.platform.startswith("win"):
self._toplevel.overrideredirect(True)
self._toplevel.attributes("-transparentcolor", self._apply_appearance_mode(self.transparent_color))
self._toplevel.attributes("-toolwindow", True) # removes icon from taskbar
elif sys.platform.startswith("darwin"):
self.transparent_color = "systemTransparent"
self._toplevel.attributes("-transparent", True)
if tkinter.TkVersion >= 9.0: #necessary to achieve transparent edges due to changes in Tk 9.x on MacOS
self._toplevel.wm_attributes(stylemask=('fullsizecontent','titled'))
self._toplevel.title("")
self._theme_ff_info["corner_radius"] = 0
else:
self._toplevel.overrideredirect(True)
self.transparent_color = "systemTransparent"
self._toplevel.attributes("-transparent", True)
else:
#Linux doesn't support transparency, so we force the frame to cover all available space
self._toplevel.overrideredirect(True)
self._theme_ff_info["corner_radius"] = 0

# frame
Expand Down Expand Up @@ -126,6 +133,8 @@ def open(self, x_root: int, y_root: int, anchor: AnchorType = "nw") -> None:
self._toplevel.geometry(f"{width}x{height}+{x_root - x_delta}+{y_root - y_delta}",
apply_scaling=False)
self._toplevel.deiconify()
if tkinter.TkVersion >= 9.0 and sys.platform.startswith("darwin"): #necessary to achieve transparent edges due to changes in Tk 9.x on MacOS
self._toplevel.wm_attributes(stylemask=('fullsizecontent','titled'))

def close(self) -> None:
""" Hides the widget. """
Expand Down