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_OBJECT

public:
    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());


}