diff --git a/lib/matplotlib/backends/backend_qt.py b/lib/matplotlib/backends/backend_qt.py
index 845e5bc2063c..b91446c4e632 100644
--- a/lib/matplotlib/backends/backend_qt.py
+++ b/lib/matplotlib/backends/backend_qt.py
@@ -211,6 +211,7 @@ def __init__(self, figure=None):
self._draw_pending = False
self._is_drawing = False
self._draw_rect_callback = lambda painter: None
+ self._in_resize_event = False
self.setAttribute(
_enum("QtCore.Qt.WidgetAttribute").WA_OpaquePaintEvent)
@@ -333,21 +334,23 @@ def keyReleaseEvent(self, event):
guiEvent=event)._process()
def resizeEvent(self, event):
- frame = sys._getframe()
- # Prevent PyQt6 recursion, but sometimes frame.f_back is None
- if frame.f_code is getattr(frame.f_back, 'f_code', None):
+ if self._in_resize_event: # Prevent PyQt6 recursion
return
- w = event.size().width() * self.device_pixel_ratio
- h = event.size().height() * self.device_pixel_ratio
- dpival = self.figure.dpi
- winch = w / dpival
- hinch = h / dpival
- self.figure.set_size_inches(winch, hinch, forward=False)
- # pass back into Qt to let it finish
- QtWidgets.QWidget.resizeEvent(self, event)
- # emit our resize events
- ResizeEvent("resize_event", self)._process()
- self.draw_idle()
+ self._in_resize_event = True
+ try:
+ w = event.size().width() * self.device_pixel_ratio
+ h = event.size().height() * self.device_pixel_ratio
+ dpival = self.figure.dpi
+ winch = w / dpival
+ hinch = h / dpival
+ self.figure.set_size_inches(winch, hinch, forward=False)
+ # pass back into Qt to let it finish
+ QtWidgets.QWidget.resizeEvent(self, event)
+ # emit our resize events
+ ResizeEvent("resize_event", self)._process()
+ self.draw_idle()
+ finally:
+ self._in_resize_event = False
def sizeHint(self):
w, h = self.get_width_height()
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