qt学习记录
2015-03-28 23:47
267 查看
main.cpp
sql_interface.h
sql_interface.cpp
display_da.h
display_da.cpp
效果:
![](https://img-blog.csdn.net/20150328234458173)
#include "display_da.h" #include <QtGui/QApplication> int main(int argc, char *argv[]) { // QApplication::addLibraryPath("./plugins"); QApplication a(argc, argv); display_da w; w.show(); return a.exec(); }
sql_interface.h
#ifndef SQL_INTERFACE_H #define SQL_INTERFACE_H #include <QString> #include <QtCore> #include <QtSql/QSqlDatabase> #include <QtSql/QSqlQueryModel> #include <QtGui/QMessageBox> #include <qtableview.h> #include <QtGui/QComboBox> #include <qsqlerror.h> class SqlClass : public QObject { Q_OBJECT private: QSqlDatabase* db; QString db_driver,host_name,db_name,user_name,pass_word; public: SqlClass(QObject* parent = 0, QString Driver = "QODBC",QString HostName = "172.18.19.16",QString DbName = "db_wuliu",QString UserName = "sa",QString PassWd = "903198975"); virtual ~SqlClass(); public: void query_sql(QComboBox *); }; #endif //SQL_INTERFACE_H
sql_interface.cpp
#include "sql_interface.h" SqlClass::SqlClass(QObject* parent /* = 0 */, QString Driver /* = "QMYSQL" */,QString HostName /* = "localhost" */,QString DbName /* = "weixin_db" */,QString UserName /* = "root" */,QString PassWd /* = "123123" */) : QObject(parent),db_driver(Driver),host_name(HostName),db_name(DbName),user_name(UserName),pass_word(PassWd) { db = &QSqlDatabase::addDatabase(db_driver); if( !db->isValid() ){ qDebug()<< db->lastError().text(); } db->setHostName(host_name); db->setDatabaseName("DRIVER={SQL SERVER};SERVER="+host_name+";DATABASE="+db_name); db->setUserName(user_name); db->setPassword(pass_word); if( !db->open() ){ QMessageBox::warning(NULL,"database error","Cannot open DB",QMessageBox::Cancel); } else{ QMessageBox::information(NULL,"connected database","please chose the game version",QMessageBox::Ok); } } void SqlClass::query_sql(QComboBox *need_add) { QSqlQueryModel* result_model = new QSqlQueryModel(); const QSqlDatabase& database= *db; result_model->setQuery("SELECT * from dbo.t_user",database); qDebug()<<database.lastError().text(); need_add->setModel(result_model); } SqlClass::~SqlClass() { }
display_da.h
#ifndef DISPLAY_DA_H #define DISPLAY_DA_H #include <QtGui/QMainWindow> #include "ui_display_da.h" #include "sql_interface.h" class display_da : public QMainWindow { Q_OBJECT private: Ui::display_daClass ui; SqlClass* mainSql; public: display_da(QWidget *parent = 0, Qt::WFlags flags = 0); ~display_da(); }; #endif // DISPLAY_DA_H
display_da.cpp
#include "display_da.h" display_da::display_da(QWidget *parent, Qt::WFlags flags) : QMainWindow(parent, flags) { ui.setupUi(this); mainSql = new SqlClass(this); mainSql->query_sql(ui.select_gv_combo); } display_da::~display_da() { }
效果:
相关文章推荐
- QT学习记录
- Qt学习记录(一)——Helloword
- QT学习记录之理解信号槽机制
- QT 学习记录:渐变-QLinearGradient,QRadialGradient,QConicalGradient)
- qt线程学习记录
- QT 学习记录1
- QT学习点滴记录(五)
- QT学习记录之环境搭建
- QT学习记录之环境搭建
- QT学习点滴记录(二)
- QT学习的记录
- QT学习进程记录1:学写Helloworld
- qt 学习记录5
- QT学习记录之理解信号槽机制
- QT 学习记录:渐变-QLinearGradient,QRadialGradient,QConicalGradient)
- Qt学习随笔记录
- QT学习记录4
- QT学习记录-进度条:
- QT学习记录之控件布局
- QT学习点滴记录(四)