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15960ba1 · 刘汉章 · 15960ba1
Commit 15960ba1 authored Jan 26, 2021 by 刘汉章
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Dialog
+20 -0

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--- a/Dialog
+++ b/Dialog
+void Dialog::on_countBtn_clicked()
+{
+    bool ok;
+    QString tempStr;
+    QString valueStr=ui->radiusLineEdit->text();
+    int valueInt=valueStr.toInt(&ok);
+    double area=valueInt*valueInt*PI;//计算圆面积
+    ui->areaLabel_2->setText(tempStr.setNum(area));
+}
+
+void Dialog::on_radiusLineEdit_textChanged(const QString &arg1)
+{
+    bool ok;
+    QString tempStr;
+    QString valueStr=ui->radiusLineEdit->text();
+    int valueInt=valueStr.toInt(&ok);
+    double area=valueInt*valueInt*PI;//计算圆面积
+    ui->areaLabel_2->setText(tempStr.setNum(area));
+}
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