CSDN
Latest recorded position: #17 on Oct 3, 2026, 8:14 AM CST.
Across 2 retained daily records, the best recorded rank was #17. From the first retained rank (#22) to the last (#17), this listing rose 5 places.
In-Depth Guide to Qt's Event System: From QEvent Subclasses to Event Filters
Qt 事件机制详解：从 QEvent 派生类到事件过滤器的全景指南
ThreadEast first recorded "In-Depth Guide to Qt's Event System: From QEvent Subclasses to Event Filters" on Oct 2, 2026, 9:09 PM CST. It has been observed on CSDN, with 11 hours between the first and latest recorded appearances.
What the trend data tells us
The English title describes the topic of the source listing. Its appearance in a ranking measures attention within that platform; the ranking alone does not explain the cause of a spike or verify the underlying claim.
This stable URL remains available after a topic leaves a live ranking. Observation span is elapsed time between sightings, not continuous time on a chart. Platforms use different ranking and heat systems; their metrics are not added together.
Original evidence
Source listings
CS
#17Source metric: 4741
Original source Daily ranking timeline
Up to 180 recent daily records from retained observations and preserved archives. The best rank and last rank can differ within a day. Times use China Standard Time (UTC+8).
| Day | Platform | Best rank | Last rank | Observations |
|---|---|---|---|---|
| 2026-10-03 | CSDN | #17 | #17 | 1 |
| 2026-10-02 | CSDN | #22 | #22 | 1 |