Not getting all QTimer timeouts
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My goal is to set a color to a specified column of a QTableWidget and then it's alpha value to 0 (opacity) in about 500ms. Hence, I wrote a QTimer with 5ms interval and PreciseTimer type. While the timer does work, I only get 2 events at around 200ms and 360ms instead of 100 timeouts spread over 500ms. What could possible trigger this behavior?
auto timer = new QTimer(this); timer->setInterval(5); // Take 100 steps after 5ms each timer->setType(Qt::PreciseTimer); QObject::connect(timer, &QTimer::timeout, this, [this, timer] { auto done = this->updateColorForColumnSpecified(); if (done) timer->stop(); }); timer->start();I always seem to get only 2 timeouts at precisely those intervals. This ruins the "fade" effect of the column. What should I look into?
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My goal is to set a color to a specified column of a QTableWidget and then it's alpha value to 0 (opacity) in about 500ms. Hence, I wrote a QTimer with 5ms interval and PreciseTimer type. While the timer does work, I only get 2 events at around 200ms and 360ms instead of 100 timeouts spread over 500ms. What could possible trigger this behavior?
auto timer = new QTimer(this); timer->setInterval(5); // Take 100 steps after 5ms each timer->setType(Qt::PreciseTimer); QObject::connect(timer, &QTimer::timeout, this, [this, timer] { auto done = this->updateColorForColumnSpecified(); if (done) timer->stop(); }); timer->start();I always seem to get only 2 timeouts at precisely those intervals. This ruins the "fade" effect of the column. What should I look into?
@ajaxcrypto How are you checking for the timeout intervals? What happens if you place a debug message directly in the slot.
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Increasing the interval to 10ms seems to work perfectly. (The fade effect in turn completes in about ~1000ms).
