qplaintextedit的使用问题。

[skyily]

我用qplaintextedit做了一个现实窗口，用来现实动态日志，每500行清屏一次，
用的qplaintextedit->insertPlainText(line),结果一段时间就会报错，

QTextLine: Can't set a line width while not layouting.
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0xb6970b70 (LWP 28079)]
QTextLayout::createLine (this=0xb5e24a80) at /var/tmp/qt-src/src/gui/text/qtextlayout.cpp:767
767 /var/tmp/qt-src/src/gui/text/qtextlayout.cpp: No such file or directory.
in /var/tmp/qt-src/src/gui/text/qtextlayout.cpp
(gdb) quit
请各位大侠帮忙啊，
万分感谢

[jdwx]

void QPlainTextEdit::appendPlainText ( const QString & text ) [slot]

[skyily]

一楼的大侠，能说再详细点吗，谢谢

[jdwx]

就是把一段文本追加到edit控件的最后面。
类似QtCreator的编译输出窗口。