Qt内存绘图,实时输出到屏幕
我希望在用qt绘制大量图片到内存,并且实时输出到屏幕,绘制图片的数据随机或者文件中获取,编程测试了下,似乎paint都是在paintEvent事件中实现,由于需要键盘启动和终止绘图动作,于是我尝试在子进程中守护绘制图形,然后调用repaint()绘制图形,但是每次都报错:
[xcb] Unknown sequence number while processing queue
[xcb] Most likely this is a multi-threaded client and XInitThreads has not been called
请问下高手怎么回事呢?谢谢