qt - 添加到 QListWidget 时的 SIGSEGV

Question

我在向 QListWidget 添加元素时遇到问题。我已经用 QtDesigner 构建了一些框架，然后，我想在代码列表中添加一些元素。即使我写：

QListWidgetItem* i = new QListWidgetItem("text");
Q_ASSERT(stepsList);
qDebug() << "before";
stepsList->addItem(i);
qDebug() << "after";

它只打印“之前”并与 SIGSEGV 一起崩溃。另外，我设法得到这样的错误消息：

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff6f2a4a4 in QListWidget::count() const ()
from /usr/lib/x86_64-linux-gnu/libQtGui.so.4

是什么原因？

score 1 · Accepted Answer

Well, acceptation is needed so I'll write what was wrong:

I needed to call setupUi() first, in order to initialize the stepsList as @Timo Geusch wrote.

Solved.

1 回答 1