ASSERT: "!isEmpty()" in file /usr/include/qt4/QtCore/qlist.h, line 263着什么意思呀这是263行 inline T& first() { Q_ASSERT(!isEmpty()); return *begin(); } jingyingbox 武林高手 9 字面意思就是调用QList::first()的时候,QList里面必须有元素 zival 仗剑天涯 3 Bus b; b....
first()); Q_ASSERT(axisY); axisY->setLabelFormat("%.1f "); return chart; } // 更新图表 void ThemeWidget::updateUI() { QChart::ChartTheme theme = static_cast<QChart::ChartTheme>( m_ui->themeComboBox->itemData(m_ui->themeComboBox->currentIndex()).toInt()); qDebug () << "...
DWORD nCount = d->winEventNotifierList.count(); Q_ASSERT(nCount < MAXIMUM_WAIT_OBJECTS - 1); MSG msg; bool haveMessage; if (!(flags & QEventLoop::ExcludeUserInputEvents) && !d->queuedUserInputEvents.isEmpty()) { // process queued user input events haveMessage = true; msg = d->...
lib->fileName.isEmpty()) { //从映射表中移除 QLibraryPrivate *that = data->libraryMap.take(lib->fileName); Q_ASSERT(lib == that); Q_UNUSED(that); } delete lib; } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24....
Q_ASSERT(nCount < MAXIMUM_WAIT_OBJECTS - 1); MSG msg; bool haveMessage; if (!(flags & QEventLoop::ExcludeUserInputEvents) && !d->queuedUserInputEvents.isEmpty()) { // process queued user input events haveMessage = true; //从处理用户输入队列中取出一条事件 ...
QString specialChar = event->text();if (!specialChar.isEmpty()) {// 将特殊字符插入到文本框或编辑器中} 输入法支持:在使用输入法输入非英文字符时(例如中文、日文等),text() 函数可以返回正确的字符。这使得您可以实现对多语言输入的支持,而无需额外处理输入法事件。
{ DWORD waitRet = 0; HANDLE pHandles[MAXIMUM_WAIT_OBJECTS - 1]; QVarLengthArray<MSG> processedTimers; while (!d->interrupt) { DWORD nCount = d->winEventNotifierList.count(); Q_ASSERT(nCount < MAXIMUM_WAIT_OBJECTS - 1); MSG msg; bool haveMessage; if (!(flags & QEventLoop::...
178 Q_ASSERT(nCount < MAXIMUM_WAIT_OBJECTS - 1); 179 180 MSG msg; 181 bool haveMessage; 182 183 if (!(flags & QEventLoop::ExcludeUserInputEvents) && !d->queuedUserInputEvents.isEmpty()) 184 { 185 // process queued user input events ...
first()); Q_ASSERT(axisY); axisY->setLabelFormat("%.1f "); 0x02 设置主题 用户可以可以选择系统中的内置主题。然后将此主题应用于布局中的所有图表。 配置组合框中的内置主题。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 // add items to theme combobox m_ui->themeComboBox->...
Q_ASSERT(item); m_edit->setText(item->text()); } void CustomWidget::updateItem() { QListWidgetItem* item = m_widget->currentItem(); if(item) { item->setText(m_edit->text()); } } 绘制形状(Drawing Shapes) 有些问题可以更好地可视化。如果手头的问题看起来很像几何对象,那么 Qt 图形...