Qt Template Function As Signal Or SlotQt Template Function As Signal Or Slot
Sets the device pixel ratio used by the paint buffers of this QCustomPlot instance.. Normally, this doesn't need to be set manually, because it is initialized with the regular QWidget::devicePixelRatio which is configured by Qt to fit the display device (e.g. 1 for normal displays, 2 for High-DPI displays). Sep 24, 2019 · 参考博客 QT信号槽机制的优缺点 (1)问题: 为什么Qt使用信号与槽机制而不是传统的回调函数机制进行对象间的通信呢?回调函数的本质是“你想让别人的代码执行你的代码,而别人的代码你又不能动”这种需求下产生的。. URL L - Free ebook download as Text File (), PDF File () or read book online for free.