Attempt fix T90952

intern/ghost/intern/GHOST_SystemWin32.cpp

@@ -1003,9 +1003,11 @@ void GHOST_SystemWin32::processWintabEvent(GHOST_WindowWin32 *window)
     int x = GET_X_LPARAM(pos);
     int y = GET_Y_LPARAM(pos);
 
-    /* TODO supply tablet data */
+    /* TODO supply unmodified tablet data */
+    GHOST_TabletData td = wt->getLastTabletData();
+    td.Pressure = 1.0f;
     system->pushEvent(new GHOST_EventCursor(
-        system->getMilliSeconds(), GHOST_kEventCursorMove, window, x, y, GHOST_TABLET_DATA_NONE));
+        system->getMilliSeconds(), GHOST_kEventCursorMove, window, x, y, td));
   }
 }
 

intern/ghost/intern/GHOST_Wintab.cpp

@@ -150,6 +150,7 @@ void GHOST_Wintab::modifyContext(LOGCONTEXT &lc)
   lc.lcPktMode = PACKETMODE;
   lc.lcMoveMask = PACKETDATA;
   lc.lcOptions |= CXO_CSRMESSAGES | CXO_MESSAGES;
+  lc.lcBtnUpMask = lc.lcBtnDnMask = ~0;
 
   /* Tablet scaling is handled manually because some drivers don't handle HIDPI or multi-display
    * correctly; reset tablet scale factors to un-scaled tablet coordinates. */