QT：日期时间编辑器MyDateTimeEdit

    QT自带的QDateTimeEdit并不是很好用，所以我写了一个基于六个QComboBox的DateTimeWidget，感觉上比QDateTimeEdit好用多了，希望大家喜欢。

思路：
1：建立6个QComboBox，分别用来储存年月日时分秒，还有5个QLabel，用来作它们的分隔符。
2：每个月的天数会随着年份数和月份数变化，所以表示日期的QComboBox的内容也要发生相应的变化。
3：为这个DateTimeWidget加入一些常用的函数，如GetDateTime()，day(), setDay() 

（为了保存代码的简洁，很多常用的函数（如day(),setDay()）没有加上。）

截图：

源代码：

#include <QtGui>enum ComboBoxContent { YEAR, MOUTH, DAY, HOUR, MINUTE, SECOND };class MyDateTimeEdit : public QWidget{Q_OBJECTprivate://6个下拉框，分别表示年月日时分秒QComboBox *m_ComboxBox[6];//6个下拉框之间的分隔符QLabel *m_Label[5];void SetLabelContent();void SetComboBoxContent();public:MyDateTimeEdit(QWidget *parent = 0);~MyDateTimeEdit();//为了保存代码的简洁，很多常用的函数（如day(),setDay()）没有加上，//有需要的话，就自己加一下吧public slots:void ClearContent();QDateTime GetDateTime();private slots:void YearMouthChangeSlot(int index);};MyDateTimeEdit::MyDateTimeEdit(QWidget *parent){QHBoxLayout *layout = new QHBoxLayout;layout->setSizeConstraint(QLayout::SetMinimumSize);for(int i=0; i<6; i++){m_ComboxBox[i] = new QComboBox(this);if( 0 == i )m_ComboxBox[i]->setFixedWidth(60);elsem_ComboxBox[i]->setFixedWidth(40);layout->addWidget(m_ComboxBox[i]);if( i != 5 ){m_Label[i] = new QLabel(this);layout->addWidget(m_Label[i]);}}setLayout(layout);SetLabelContent();SetComboBoxContent();//当年与月变化时，“日”下拉框的内容也要相应的变化（28~31）connect(m_ComboxBox[YEAR], SIGNAL(currentIndexChanged(int)),this, SLOT(YearMouthChangeSlot(int)));connect(m_ComboxBox[MOUTH], SIGNAL(currentIndexChanged(int)),this, SLOT(YearMouthChangeSlot(int)));}MyDateTimeEdit::~MyDateTimeEdit(){}void MyDateTimeEdit::SetLabelContent(){m_Label[0]->setText("-");m_Label[1]->setText("-");m_Label[2]->setText(" ");m_Label[3]->setText(":");m_Label[4]->setText(":");}void MyDateTimeEdit::SetComboBoxContent(){for(int i=1970; i<=2020; i++)m_ComboxBox[YEAR]->addItem( QString::number(i) );for(int i=1; i<=12; i++)m_ComboxBox[MOUTH]->addItem( QString::number(i) );for(int i=0; i<24; i++)m_ComboxBox[HOUR]->addItem( QString::number(i) );for(int i=0; i<60; i++)m_ComboxBox[MINUTE]->addItem( QString::number(i) );for(int i=0; i<60; i++)m_ComboxBox[SECOND]->addItem( QString::number(i) );ClearContent();}void MyDateTimeEdit::YearMouthChangeSlot(int index){if( m_ComboxBox[YEAR]->currentText().isEmpty() ||m_ComboxBox[MOUTH]->currentText().isEmpty() )return;QString oldDay = m_ComboxBox[DAY]->currentText();QDate date( m_ComboxBox[YEAR]->currentText().toInt(),m_ComboxBox[MOUTH]->currentText().toInt(), 1);m_ComboxBox[DAY]->clear();int day = date.daysInMonth();for(int i=1; i<=day; i++)m_ComboxBox[DAY]->addItem( QString::number(i) );m_ComboxBox[DAY]->setCurrentIndex( m_ComboxBox[DAY]->findText(oldDay) );}void MyDateTimeEdit::ClearContent(){for(int i=0; i<6; i++)m_ComboxBox[i]->setCurrentIndex(-1);}QDateTime MyDateTimeEdit::GetDateTime(){//获取时间QDate date( m_ComboxBox[YEAR]->currentText().toInt(),m_ComboxBox[MOUTH]->currentText().toInt(),m_ComboxBox[DAY]->currentText().toInt() );QTime time( m_ComboxBox[HOUR]->currentText().toInt(),m_ComboxBox[MINUTE]->currentText().toInt(),m_ComboxBox[SECOND]->currentText().toInt() );return QDateTime(date, time);}#include "main.moc"int main(int argc, char **argv){QApplication app(argc, argv);MyDateTimeEdit *temp = new MyDateTimeEdit;temp->show();return app.exec();}