diff --git a/lib/matplotlib/backends/_backend_tk.py b/lib/matplotlib/backends/_backend_tk.py
index 67f8d792d996..c759fe4840d6 100644
--- a/lib/matplotlib/backends/_backend_tk.py
+++ b/lib/matplotlib/backends/_backend_tk.py
@@ -669,9 +669,13 @@ def _recolor_icon(image, color):
button._ntimage_alt = image_alt
if _is_dark("background"):
- button.configure(image=image_alt)
+ # For Checkbuttons, we need to set `image` and `selectimage` at
+ # the same time. Otherwise, when updating the `image` option
+ # (such as when changing DPI), if the old `selectimage` has
+ # just been overwritten, Tk will throw an error.
+ image_kwargs = {"image": image_alt}
else:
- button.configure(image=image)
+ image_kwargs = {"image": image}
# Checkbuttons may switch the background to `selectcolor` in the
# checked state, so check separately which image it needs to use in
# that state to still ensure enough contrast with the background.
@@ -689,11 +693,11 @@ def _recolor_icon(image, color):
r2, g2, b2 = _get_color("activebackground")
selectcolor = ((r1+r2)/2, (g1+g2)/2, (b1+b2)/2)
if _is_dark(selectcolor):
- button.configure(selectimage=image_alt)
+ image_kwargs["selectimage"] = image_alt
else:
- button.configure(selectimage=image)
+ image_kwargs["selectimage"] = image
- button.configure(height='18p', width='18p')
+ button.configure(**image_kwargs, height='18p', width='18p')
def _Button(self, text, image_file, toggle, command):
if not toggle:
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