From 7be1c4ca2f7bb185428509337d302c0cf1e451c0 Mon Sep 17 00:00:00 2001
From: John Preston <johnprestonmail@gmail.com>
Date: Sat, 31 Aug 2019 14:15:30 +0300
Subject: [PATCH] Fix crash in right click on CalendarBox.

Any attempt to destroy a widget on right click will crash,
because Qt anyway sends QContextMenuEvent to the same widget.

Fixes #6464.
---
 Telegram/SourceFiles/boxes/calendar_box.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/Telegram/SourceFiles/boxes/calendar_box.cpp b/Telegram/SourceFiles/boxes/calendar_box.cpp
index b7db290c2..31d5c62b8 100644
--- a/Telegram/SourceFiles/boxes/calendar_box.cpp
+++ b/Telegram/SourceFiles/boxes/calendar_box.cpp
@@ -389,8 +389,10 @@ void CalendarBox::Inner::mouseReleaseEvent(QMouseEvent *e) {
 	auto pressed = _pressed;
 	setPressed(kEmptySelection);
 	if (pressed != kEmptySelection && pressed == _selected) {
-		const auto onstack = _dateChosenCallback;
-		onstack(_context->dateFromIndex(pressed));
+		crl::on_main(this, [=] {
+			const auto onstack = _dateChosenCallback;
+			onstack(_context->dateFromIndex(pressed));
+		});
 	}
 }