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-rw-r--r--widget/windows/WinUtils.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/widget/windows/WinUtils.cpp b/widget/windows/WinUtils.cpp
index 149513b2f..3ff46513e 100644
--- a/widget/windows/WinUtils.cpp
+++ b/widget/windows/WinUtils.cpp
@@ -1140,7 +1140,8 @@ WinUtils::GetIsMouseFromTouch(EventMessage aEventMessage)
const uint32_t MOZ_T_I_SIGNATURE = TABLET_INK_TOUCH | TABLET_INK_SIGNATURE;
const uint32_t MOZ_T_I_CHECK_TCH = TABLET_INK_TOUCH | TABLET_INK_CHECK;
return ((aEventMessage == eMouseMove || aEventMessage == eMouseDown ||
- aEventMessage == eMouseUp || aEventMessage == eMouseDoubleClick) &&
+ aEventMessage == eMouseUp || aEventMessage == eMouseAuxClick ||
+ aEventMessage == eMouseDoubleClick) &&
(GetMessageExtraInfo() & MOZ_T_I_SIGNATURE) == MOZ_T_I_CHECK_TCH);
}