执行时(没有编译错误)我进入控制台
QWidget :: setLayout:尝试在CGSearchResult上设置QLayout“”, 已经有布局
我使用以下代码:
CGSearchResult::CGSearchResult(QWidget *parent) : QWidget(parent)
{
initControls();
SetTableContent();
}
void CGSearchResult::initControls()
{
backButton = new QPushButton(tr("&Back"));
connect(backButton, SIGNAL(clicked()), this, SLOT(showHome()));
model=new QStandardItemModel();
QWidget::setFont(QFont("Courier New", 8, QFont::Bold));
searchTable = new QTableView(this);
searchTable->showGrid();
searchTable->resize(720,400);
searchTable->horizontalHeader()->setDefaultSectionSize(170);
searchTable->verticalHeader()->setDefaultSectionSize(50);
searchTable->verticalHeader()->hide();
searchTable->horizontalHeader()->setResizeMode(QHeaderView::Fixed);
searchTable->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
QGridLayout *layout = new QGridLayout();
layout->addWidget(backButton, 0, 0, 1, 1);
layout->addWidget(searchTable, 2, 0, 1, 1);
setLayout(layout);
}
答案 0 :(得分:6)
http://qt-project.org/doc/qt-4.8/qwidget.html#setLayout
如果此窗口小部件上已安装布局管理器,QWidget将不允许您安装另一个布局管理器。您必须首先删除现有布局管理器(由layout()返回),然后才能使用新布局调用setLayout()。