QtQStringEx

update QtQStringEx and READ.md

QtQStringEx/ExQString.cpp

@@ -0,0 +1,84 @@
+#include "ExQString.h"
+#include "ui_ExQString.h"
+#include <QString>
+
+ExQString::ExQString(QWidget *parent) :
+    QWidget(parent),
+    ui(new Ui::ExQString)
+{
+    ui->setupUi(this);
+    setWindowTitle(QObject::tr("2/8/10/16进制互相转化"));
+}
+
+ExQString::~ExQString()
+{
+    delete ui;
+}
+
+void ExQString::on_btnResult_clicked()
+{
+    float a = ui->editA->text().toFloat();
+    float b = ui->editB->text().toFloat();
+    float m_val = a * b;
+    QString str = QString::number(static_cast<double>(m_val), 'f', 2);
+    ui->editC->setText(str);
+}
+
+void ExQString::on_btn2_clicked()
+{
+    QString str = ui->edit2->text();
+    bool ok;
+    int val = str.toInt(&ok, 2);      //获取二进制
+
+    str = str.setNum(val, 8);         //显示八进制
+    ui->edit8->setText(str);
+    str = str.setNum(val, 10);        //显示十进制
+    ui->edit10->setText(str);
+    str = str.setNum(val, 16);        //显示十六进制
+    ui->edit16->setText(str);
+}
+
+void ExQString::on_btn8_clicked()
+{
+    QString str = ui->edit8->text();
+    bool ok;
+    int val = str.toInt(&ok, 8);
+
+    str = str.setNum(val, 2);
+    ui->edit2->setText(str);
+    str = str.setNum(val, 10);
+    ui->edit10->setText(str);
+    str = str.setNum(val, 16);
+    ui->edit16->setText(str);
+
+}
+
+void ExQString::on_btn10_clicked()
+{
+    QString str = ui->edit10->text();
+    bool ok;
+    int val = str.toInt(&ok, 10);
+
+    str = str.setNum(val, 2);
+    ui->edit2->setText(str);
+    str = str.setNum(val, 8);
+    ui->edit8->setText(str);
+    str = str.setNum(val, 16);
+    ui->edit16->setText(str);
+}
+
+
+
+void ExQString::on_btn16_clicked()
+{
+    QString str = ui->edit16->text();
+    bool ok;
+    int val = str.toInt(&ok, 16);
+
+    str = str.setNum(val, 2);
+    ui->edit2->setText(str);
+    str = str.setNum(val, 8);
+    ui->edit8->setText(str);
+    str = str.setNum(val, 10);
+    ui->edit10->setText(str);
+}