QT makes IDE tools for itself

Project creation

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Base class Selection

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Project files

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Compile run

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Project Document 1 Mainwindow.h

#ifndef  MAINWINDOW_H#define MAINWINDOW_H#include <QMainWindow> #include  <qtextedit >    //text #include <qmenu>        // Add menu #include <qmenubar>     //join menu bar #include <qaction>       //Join the menu bar #include <qfiledialog>class mainwindow : public  qmainwindow{    q_objectpublic:     mainwindow (QWidget  *parent = 0);     ~mainwindow ();p rivate:    bool  is_changed;    qstring  filename;   //the name of the current file      qtextedit *text1;   //Central TextEdit Control     //File menu      qmenu *file_menu;   //File Menu     QAction *new_file;    //new File menu item &NBSP;&Nbsp;  qaction *open_file;   //Open File menu item     qaction *save_ file;   //Save File menu item     qaction *exit_file;   //exit file     //Edit Menu     qmenu *edit_menu;   //Edit menu      qaction *copy_edit;   //Edit menu Copy button     qaction * Paste_edit;    qaction *cut_edit;    qaction *allselect_edit ;     qmenu *help_menu;   //Help menu     //compile menu      qmenu *comp_menu;   //compiling menu     qaction *comp_ comp;   //Compile button     qaction *run_comp;   //Run button      void precomp ();p rivate slots:    void on_exit ();//In the QT editing environment , install Alt+enter, prompt and press ENTER again &NBSP;    void on_open ();     void on_save ();     Void on_new ();     void on_copy ();     void on_paste ();     void on_cut ();     void on_allselect ();     void on_changed ();     void on_comp ();     void on_ Run ();}; #endif  // mainwindow_h

Project Document 2 Main.cpp

#include "mainwindow.h" #include <qapplication>int main (int argc, char *argv[]) {qapplication A (argc, argv);    MainWindow W;    W.resize (800,600);//Set the main window of the length of the width w.show (); return a.exec ();}

Project Document 3 Mainwindow.cpp

#include   "Mainwindow.h" Mainwindow::mainwindow (qwidget *parent)//Constructors     :  Qmainwindow (parent) {    text1 = new qtextedit;           //creating a Qtextedit instance in the heap     text1->setfontpointsize (14) ;     //set the font size of the form     this->setcentralwidget (Text1);   // Add the TextEdit control to the workspace of the main window     //text content changes before saving     is_changed =  false;    //add menu items and set shortcut keys for them     //"File menu bar"     file_ Menu = this->menubar ()->addmenu ("file");    new_file = new  Qaction ("New file", this);   //The first argument is the text of the menu item, and the second argument is the pointer to the body     new_file -> Setshortcut (TR ("CTRL + N"));    //set shortcut key     file_menu ->addaction (new_ file);         //Association   menu bar   and   menu item     file_menu ->addseparator ();              //display a delimiter on the file drop-down menu      open_file = new qaction ("Open File", this);    file_menu -> Addaction (Open_file),     open_file ->setshortcut (tr ("Ctrl+o"));     save_file = new qaction ("Save File", this);    file_menu -> Addaction (Save_file),     save_file ->setshortcut (tr ("Ctrl+s"));     exit_file = new qaction ("Exit", this);     file_menu ->addaction ( Exit_file);     //"Edit menu Bar"     edit_menu = this->menubar ()- >addmenu ("edit");     copy_edit = new qaction ("Copy", this);     copy_edit -> Setshortcut (TR ("CTRL + C"));     edit_menu ->addaction (Copy_edit);     paste_edit = new qaction ("Paste", this);    paste_edit -> Setshortcut (TR ("Ctrl + V"));      edit_menu ->addaction (Paste_edit);     cut_edit = new qaction ("Cut", this);    cut_edit -> Setshortcut (tr ("ctrl+x"));     edit_menu ->addaction (Cut_edit);     allselect_edit = new qaction ("Select All", this);    allselect_edit -> Setshortcut (TR ("Ctrl + A"));     edit_menu ->addaction (Allselect_edit);     //"Compiling the menu bar"     comp_menu = this->menubar ()->addMenu ("compiling");     comp_comp = new qaction ("Compile", this);  comp_menu->addaction (Comp_comp);     run_cOmp = new qaction ("Run", this);   comp_menu->addaction (Run_comp);     //"Help menu Bar"     help_menu = this->menubar ()->addmenu ("Help");     //"mouse events and Functions" when the mouse clicks the exit_file  menu, execute the on_exit () function     connect (Exit_file, SIGNAL (triggered ()), This,slot (On_exit ()));     connect (Open_file,signal ()), this, SLOT (On_open ()));     connect (Save_file,signal (triggered ()), This,slot (On_save ()));     connect (New_file,signal (triggered ()), This,slot (On_new ()));     connect ( Copy_edit,signal (triggered ()), This,slot (On_copy ())),     connect (Paste_edit,signal ( Triggered ()), This,slot (On_paste ()),     connect (Cut_edit,signal (triggered ()), This,SLOT (on_ Cut ()));     connect (Allselect_edit,signal (triggered ()), This,slot (On_allselect ()));     connect (Text1,SIGNAL (TextChanged ()), This,slot (On_changed ()));//When text content changes, trigger on_changed function     connect (comp _comp,signal (triggered ()), This,slot (On_comp ())), or//when the text content changes, the on_changed function is triggered     connect (run _comp,signal (triggered ()), This,slot (On_run ()));//When the text content changes, the on_changed function is triggered}mainwindow::~mainwindow ()//destructor {     delete text1;    text1 = null;} Void mainwindow::p Recomp ()//Pre-compilation {    file *p = fopen ( Filename.tostdstring (). Data (), "R");     if (P == null)  return ;     qstring cmd = filename + ". C";    file *p1  = fopen (Cmd.tostdstring (). Data (), "w");     if (P1 == null)  return ;     qstring str;    while (!feof (p))     {         char bUf[1024] = {0};        fgets (Buf,sizeof (BUF), p);         str += buf;    }     Str.replace ("contains", "#include"),     str.replace ("Main function", "main");     Str.replace ("integer", "int"),     str.replace ("Start", "{");     str.replace ("Wrap Up" , "}");     str.replace (". ",";");     str.replace ("Back", "return"),     str.replace ("print", "printf");     str.replace ("Input Output", "<stdio.h>");     str.replace ("Silent Wait ...", " GetChar () ");     fputs (Str.tostdstring (). Data (), p1);     fclose (P);     fclose (p1);} Program Exits Void mainwindow::on_exit () {    this ->close ();} Open File Void mainwindow::on_open () {   filename = &nbsP Qfiledialog::getopenfilename (This, "open");    if (Filename.isempty ())  return ;// Consider the scenario    file *p = fopen (filename.tostdstring (). Data (), "R") that the user chooses to cancel;    if (p == null)  return ;    QString str;     while (!feof (p))     {        char buf[ 1024] = {0};        fgets (Buf,sizeof (BUF), p);         str += buf;    }     Fclose (P);     text1->settext (str);     is_changed = false;} Save File Void mainwindow::on_save () {    if (Filename.isempty ())     {         filename = qfiledialog::getsavefilename (This, "Save File") ;    }    if (!filename.isempty ())     {         file *p = fopen (Filename.tostdstring (). Data (), "W");         if (p == null)  return ;        qstring  str = text1->toplaintext ();         fputs ( Str.tostdstring (). Data (), p);         fclose (P);     }}//new File Void mainwindow::on_new () {    if (is_changed == true)      {        on_save ();         is_changed = false;    }    filename =   "";     text1->settext ("");} IDE copy function void mainwindow::on_copy () {    text1->copy ();} Void&nBsp Mainwindow::on_paste () {    text1->paste ();} Void mainwindow::on_cut () {    text1->cut ();} Void mainwindow::on_allselect () {    text1->selectall ();} Void mainwindow::on_changed () {    is_changed = true;} Compile and run the button Void mainwindow::on_comp () {    if  (is_changed == true)// Click on the Compile button, if the text content changes, automatically save     {        on_save ();     }    precomp ();//Automatic pre-compilation     QString cmd;     const char *s = filename.tostdstring (). Data ();     cmd.sprintf ("GCC&NBSP;-O&NBSP;%S.EXE&NBSP;%S.C", s,s);     system (Cmd.toStdString (). Data ());//First compile     //How to delete the temporary file     cmd = filename.replace ("/" , "\ \")  +  ". C";   &nbsP; remove (Cmd.tostdstring (). Data ());    cmd = filename +  ". exe";     system (Cmd.tostdstring (). data ());//Run}void mainwindow::on_run () {     QString cmd;    cmd = filename +  ". exe";     system (Cmd.tostdstring (). data ());

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QT makes IDE tools for itself