> # C [AppKit+0x3a528e] -[NSApplication _crashOnException:]+0x6d > > The app is crashed as soon as I start scrolling. Investigating... > May be it is my fault during backporting.
Sorry, It was may fault. > LWCToolkit.m: > +// SCROLL EVENT MASK > +#define SCROLL_PHASE_UNSUPPORTED 1 > ... > > replace the comment with the following one: > > +// TRACKPAD SCROLL EVENT PHASE I discovered how we should detect mouse event properly: use both properties phase and momentumPhase. https://developer.apple.com/library/prerelease/content/documentation/Cocoa/Conceptual/EventOverview/HandlingTouchEvents/HandlingTouchEvents.html "The momentumPhase property helps you detect momentum scrolling, in which the hardware continues to issue scroll wheel events even though the user is no longer physically scrolling." if (phase==NULL) && (momentumPhase==NULL) -> this is a mouse event. scrolling by trackpad generates the following events: phase=mayBegan momentumPhase=null phase=began momentumPhase=null phase=continued momentumPhase=null ... phase=continued momentumPhase=null phase=ended momentumPhase=null phase=null momentumPhase=began phase=null momentumPhase=continued ... phase=null momentumPhase=continued phase=null momentumPhase=ended So, we should generate PHASE_UNSUPPORTED only if ((phase == NULL) && (momentumPhase == NULL)) -- Best regards, Sergey A. Malenkov
