我目前是一名学生程序员,在工作中使用 Qt 构建 GUI 界面,目前在 QTreeWidgetItem 上的 Qt 文档中找到解决方案时遇到问题。我目前有一个界面,其中包含用于编辑、删除和复制我的QTree
. 了解我的树的填充方式可能对您很重要。中显示的项目QTree
以这种方式从向量中动态附加。
void InjectionGUI::addInjections_Clicked() //creates a new instance of injections
{
InjectionDialog newAddInjectionDialog; //where my dialog opens for user input
InjectionData defaultValues;
newAddInjectionDialog.setData(defaultValues);
if(newAddInjectionDialog.exec() == QDialog::Accepted)//a check data returns either Accepted or rejected
{
qTableInjectionData.append(newAddInjectionDialog.transInjectionData); //this appends the valid data from the injection dialog to the vector qTableInjectionData
ui->injectionTreeWidget->clear();
for (int i=0; i < qTableInjectionData.size(); i++) // here I add the data from the vector to the tree widget.
{
InjectionData temp = qTableInjectionData.at(i);
QString injectionType;
QString tmpStr;
int column = 0;
//need sorting solution(still working on this)
if(temp.particleInjectionActive == true) // this evaluates the injection types
{
if(temp.particleInjectionOrLiquidDroplets == true)
{
injectionType += "(LD)";
}
else
{
injectionType += "(P)";
}
}
if(temp.fluidInjectionActive == true)
{
injectionType += "(F)";
}
QTreeWidgetItem *qTreeWidgetItemInjectionData = new QTreeWidgetItem(ui->injectionTreeWidget); //Here data is added into rows from each instance of injection dialog found in vector
qTreeWidgetItemInjectionData->setText(column++, tmpStr.setNum(i));
qTreeWidgetItemInjectionData->setText(column++, temp.lineEditInjectionName);
qTreeWidgetItemInjectionData->setText(column++, injectionType);
qTreeWidgetItemInjectionData->setText(column++, tmpStr.setNum(temp.lineEditParitcleVelocity));
qTreeWidgetItemInjectionData->setText(column++, tmpStr.setNum(temp.lineEditFluidVelocity));
qTreeWidgetItemInjectionData->setText(column++, tmpStr.setNum(temp.lineEditParticleMassFlow));
qTreeWidgetItemInjectionData->setText(column++, tmpStr.setNum(temp.lineEditFluidMassFlow));
qTreeWidgetItemInjectionData->setText(column++, temp.lineEditComment);
}
}
}
现在我真的需要一种方法来找出用户在其中选择了哪个项目,QTree
以便我可以将其从 Vector 中删除。我的psuedo是识别哪一行被选中,确认删除,删除itemAt(item selected),重新分配ID列;因为每个实例都在此列中分配了一个编号。我在看这个帖子,三年前发布;但它主要是指回我已经审查过的文档。另外,选择的答案似乎非常不确定,因为其他答案似乎一直在正确的轨道上。我知道这个答案可能就在我面前;但我能说什么,菜鸟将是菜鸟,我很难理解实施。请只留下富有成效的反馈,因为我只对学习和完成这项任务感兴趣。提前致谢。