Fixed winforms implementation.

beeware · Aug 28, 2023 · 7b864fe · 7b864fe
1 parent 943612d
commit 7b864fe
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/winforms/src/toga_winforms/window.py b/winforms/src/toga_winforms/window.py
@@ -178,9 +178,11 @@ def resize_content(self):
  )
 
  def window_on_gain_focus(self, sender, event):
- self.interface.app.on_gain_focus(self.interface)
+ if self.interface.app is not None:
+ self.interface.app.on_gain_focus(self.interface)
  self.interface.on_gain_focus(self.interface)
 
  def window_on_lose_focus(self, sender, event):
- self.interface.app.on_lose_focus(self.interface)
+ if self.interface.app is not None:
+ self.interface.app.on_lose_focus(self.interface)
  self.interface.on_lose_focus(self.interface)