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我有一个包含多个复选框项目的组合框，我需要能够遍历它们并确定它们是否被选中，或者更合适的是，一旦选中一个项目，就会触发一个事件，但我似乎无法得到信号/插槽组合正常工作。

这是我的一些代码：

void MainWindow::setupQueryBuilder(Ui::MainWindow* ui)
{
    QStandardItemModel* assessmentModel = new QStandardItemModel(3, 1);
    QStandardItem* assessmentPleaseSelect = new QStandardItem();
    QStandardItem* assessmentVisionScreening = new QStandardItem();
    QStandardItem* assessmentHearingAssessment = new QStandardItem();
    QStandardItem* assessmentDevelopmentalAssessment = new QStandardItem();

    assessmentPleaseSelect->setText("Please Select...");
    assessmentPleaseSelect->setFlags(Qt::ItemIsEnabled);
    assessmentPleaseSelect->setData(Qt::CheckStateRole);

    assessmentVisionScreening->setText("Vision Screening");
    assessmentVisionScreening->setFlags(Qt::ItemIsUserCheckable | Qt::ItemIsEnabled);
    assessmentVisionScreening->setData(Qt::Unchecked, Qt::CheckStateRole);

    assessmentHearingAssessment->setText("Hearing Assessment");
    assessmentHearingAssessment->setFlags(Qt::ItemIsUserCheckable | Qt::ItemIsEnabled);
    assessmentHearingAssessment->setData(Qt::Unchecked, Qt::CheckStateRole);

    assessmentDevelopmentalAssessment->setText("Developmental Assessment");
    assessmentDevelopmentalAssessment->setFlags(Qt::ItemIsUserCheckable | Qt::ItemIsEnabled);
    assessmentDevelopmentalAssessment->setData(Qt::Unchecked, Qt::CheckStateRole);

    assessmentModel->insertRow(0, assessmentPleaseSelect);
    assessmentModel->insertRow(1, assessmentVisionScreening);
    assessmentModel->insertRow(2, assessmentHearingAssessment);
    assessmentModel->insertRow(3, assessmentDevelopmentalAssessment);

    ui->SearchAssessmentSelect->setModel(assessmentModel);
}
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1 回答 1

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我没有尝试过这个，但是通过查看你有一个signalfor QStandardItemModelcalled的文档itemChanged(QStandardItem *item)。你想要做的是创建一个slot命名的（例如）modelItemChanged(QStandardItem *item)和connect它们connect(assessmentModel, SIGNAL(itemChanged(QStandardItem *)), this, SLOT(modelItemChanged(QStandardItem *)))。

这应该将您的模型设置为slot在 anQStandardItem更改时触发，并且它将传递一个指向已更改项目的指针。然后，在您的modelItemChanged(QStandardItem *item)函数中，您可以查询QStandardItem *item以查看它处于什么状态。

于 2013-08-20T10:31:05.807 回答