c语言入门：用qt实现简单IDE

main.cpp

#include "mainwindow.h"#include <QApplication>int main(int argc, char *argv[]){    QApplication a(argc, argv);    MainWindow w;    w.resize(1000,800);    w.show();    return a.exec();}

mainwindow.h

#ifndef MAINWINDOW_H#define MAINWINDOW_H#include <QMainWindow>#include <QTextEdit>#include <QMenu>#include <QMenuBar>namespace Ui {class MainWindow;}class MainWindow : public QMainWindow{    Q_OBJECTpublic:    explicit MainWindow(QWidget *parent = 0);    QString file_path;    QTextEdit *te;    QMenu *file;    QMenu *edit;    QMenu *build;    QAction *open;    QAction *save;    QAction *exit_;    QAction *copy;    QAction *paste;    QAction *cut;    QAction *buildc;    QAction *run;    ~MainWindow();private:    Ui::MainWindow *ui;private slots:    void on_open_click();    void on_save_click();    void on_exit_click();    void on_copy_click();    void on_paste_click();    void on_cut_click();    void on_buildc_click();    void on_run_click();};#endif // MAINWINDOW_H

mainwindow.cpp

#include "mainwindow.h"#include "ui_mainwindow.h"#include <stdlib.h>#include <QFileDialog>#include <QMessageBox>//#include <>MainWindow::MainWindow(QWidget *parent) :    QMainWindow(parent),    ui(new Ui::MainWindow){    ui->setupUi(this);    te=new QTextEdit;    QFont font;    font.setPointSize(10);    te->setFont(font);    this->setCentralWidget(te);    file=new QMenu("file");    this->menuBar()->addMenu(file);    edit=new QMenu("edit");    this->menuBar()->addMenu(edit);    build=new QMenu("build");    this->menuBar()->addMenu(build);    open=new QAction("open");    open->setShortcut(tr("ctrl+o"));    file->addAction(open);    save=new QAction("save");    save->setShortcut(tr("ctrl+s"));    file->addAction(save);    exit_=new QAction("eixt");    exit_->setShortcut(tr("ctrl+q"));    file->addAction(exit_);    connect(open,SIGNAL(triggered()),this,SLOT(on_open_click()));    connect(save,SIGNAL(triggered()),this,SLOT(on_save_click()));    connect(exit_,SIGNAL(triggered()),this,SLOT(on_exit_click()));    copy=new QAction("copy");    copy->setShortcut(tr("ctrl+c"));    edit->addAction(copy);    paste=new QAction("paste");    paste->setShortcut(tr("ctrl+v"));    edit->addAction(paste);    cut=new QAction("cut");    cut->setShortcut(tr("ctrl+x"));    edit->addAction(cut);    connect(copy,SIGNAL(triggered()),this,SLOT(on_copy_click()));    connect(paste,SIGNAL(triggered()),this,SLOT(on_paste_click()));    connect(cut,SIGNAL(triggered()),this,SLOT(on_cut_click()));    buildc=new QAction("buildc");    buildc->setShortcut(tr("ctrl+m"));    build->addAction(buildc);    run=new QAction("run");    run->setShortcut(tr("ctrl+r"));    build->addAction(run);    connect(buildc,SIGNAL(triggered()),this,SLOT(on_buildc_click()));    connect(run,SIGNAL(triggered()),this,SLOT(on_run_click()));}MainWindow::~MainWindow(){    delete ui;    delete te;    delete file;    delete edit;    delete build;    delete open;    delete save;    delete exit_;    delete copy;    delete paste;    delete cut;    delete buildc;    delete run;}void MainWindow::on_open_click(){    file_path=QFileDialog::getOpenFileName();    if(file_path.isEmpty())        return;    FILE *p =fopen(file_path.toStdString().data(),"r");    if(p==NULL)    {        QMessageBox::information(this,"notify","open file failure.");        return;    }    QString content;    char buf[1024]={0};    while(!feof(p)){        content+=  fgets(buf,sizeof(buf),p);    }    fclose(p);    te->setText(content);}void MainWindow::on_save_click(){    file_path=QFileDialog::getSaveFileName();    if(file_path==NULL)return;    FILE *p=fopen(file_path.toStdString().data(),"w");    fputs(te->toPlainText().toStdString().data(),p);    fclose(p);}void MainWindow::on_exit_click(){    exit(0);}void MainWindow::on_copy_click(){    te->copy();}void MainWindow::on_paste_click(){    te->paste();}void MainWindow::on_cut_click(){    te->cut();}void MainWindow::on_buildc_click(){    QString dest=file_path;    dest.replace(".c","");    system(("gcc -o "+ dest +" "+ file_path).toStdString().data());    QMessageBox::information(this,"notify","build success!");}void MainWindow::on_run_click(){    QString dest=file_path;    dest.replace(".c","");    system(dest.toStdString().data());}