c++ - Qt Create with menubar and toolbar in a separate class file -


i create gui using qt creator, , have started normal qt application desktop project. prevent "mainwindow" class-files getting large, break out menubar , toolbar in separate class. new qt, , though have searched high , low on google, haven't been able find suitable example. working in qt 5.8.

what have is:

main.cpp:

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

mainwindow.h

#ifndef mainwindow_h #define mainwindow_h  #include "mwmenubar.h" #include <qmainwindow>  namespace ui { class mainwindow; }  class mainwindow : public qmainwindow {     q_object  public:     explicit mainwindow(qwidget *parent = 0);     ~mainwindow();  private:     ui::mainwindow *ui; };  #endif // mainwindow_h

mainwindow.cpp

#include "mainwindow.h" #include "ui_mainwindow.h" #include "mwmenubar.h"  #include <qwidget> #include <qdebug>  mainwindow::mainwindow(qwidget *parent) :     qmainwindow(parent),     ui(new ui::mainwindow) {     // populate empty menubar & toolbar     mwmenubar *mwmenu = new mwmenubar(this); //    mwmenu->show();  // shows detached menubar (i.e. outside of main window).      ui->setupui(this); }  mainwindow::~mainwindow() {     delete ui; }

mwmenubar.h

#ifndef mwmenubar_h #define mwmenubar_h  #include <qmainwindow> #include <qmenubar> #include <qtoolbar>  class qaction; class qmenu; class qtoolbar;  class mwmenubar : public qmainwindow {     q_object  public:     mwmenubar(qmainwindow *inmainwindow); // constructor     ~mwmenubar();                         // destructor  private:     qmainwindow  *mainwindow;  private slots:     // declare function prototypes     void afilenewcallback();     void afileopencallback();     void afileexitcallback();  private:     // declare function prototypes creating actions , menus     void createactions();     void createmenus();     void createtoolbar();      // define menubar elements     qmenu *mfile;      // define toolbar elements     qtoolbar *tfile;      // define menubar , toolbar actions     qaction *afilenew;     qaction *afileopen;     qaction *afileexit; };  #endif // mwmenubar_h

mwmenubar.cpp

#include "mwmenubar.h" #include <qdebug>  mwmenubar::mwmenubar(qmainwindow *parent) {     mainwindow = parent;      createactions(); // create individual menu actions     createmenus();   // create main window menubar     createtoolbar(); // create main window toolbar }  mwmenubar::~mwmenubar() {     // destructor should not needed, menubar part of     // main window , deleted when main window closed. }  // create individual menu action callbacks void mwmenubar::afilenewcallback() {     qdebug() << "pressing file->new!"; }  void mwmenubar::afileopencallback() {     qdebug() << "pressing file->open!"; }  void mwmenubar::afileexitcallback() {     qdebug() << "pressing file->exit!";     mainwindow->close(); }  // function creating menu actions void mwmenubar::createactions() { //    const qicon newicon = qicon::fromtheme("document-new", qicon(":/images/new.png")); //    afilenew = new qaction(newicon, tr("&new..."), this);     afilenew = new qaction(tr("&new..."), this);     afilenew->setshortcuts(qkeysequence::new);     afilenew->setstatustip(tr("create new file"));     connect(afilenew, &qaction::triggered, this, &mwmenubar::afilenewcallback);  //    const qicon openicon = qicon::fromtheme("document-open", qicon(":/images/open.png")); //    afileopen = new qaction(openicon, tr("&open..."), this);     afileopen = new qaction(tr("&open..."), this);     afileopen->setshortcuts(qkeysequence::open);     afileopen->setstatustip(tr("open existing file"));     connect(afileopen, &qaction::triggered, this, &mwmenubar::afileopencallback);      afileexit = new qaction(tr("e&xit"), this);     afileexit->setshortcuts(qkeysequence::quit);     afileexit->setstatustip(tr("exit application"));     connect(afileexit, &qaction::triggered, this, &mwmenubar::afileexitcallback); }  void mwmenubar::createmenus() {     mfile = mainwindow->menubar()->addmenu(tr("&file"));     mfile->addaction(afilenew);     mfile->addaction(afileopen);     mfile->addseparator();     mfile->addaction(afileexit); }  void mwmenubar::createtoolbar() {     tfile = mainwindow->addtoolbar(tr("file"));     tfile->addaction(afilenew);     tfile->addaction(afileopen); }

(for simplicity have commented out icons qactions ("new" , "open")).

the toobar shows fine, can't make menubar show up. have spent hours trying sorts of things in vain. code example appreciated. realize doing may wrong alltogether - if so, please show me do.


Comments

Post a Comment

Popular posts from this blog

android - InAppBilling registering BroadcastReceiver in AndroidManifest -

i'm implementing inapp billing in android app. works well, however, i'm trying decouple broadcast receiver activity manifest. suggestion in android's trivialdrive sample: // important: dynamically register broadcast messages updated purchases. // register receiver here instead of <receiver> in manifest // because call getpurchases() @ startup, therefore can ignore // broadcasts sent while app isn't running. // note: registering listener in activity bad idea, done here // because sample. regardless, receiver must registered after // iabhelper setup, before first call getpurchases(). currently there's class extends broadcastreceiver : public class iabbroadcastreceiver extends broadcastreceiver { /** * intent action receiver should filter for. */ public static final string action = "com.android.vending.billing.purchases_updated"; private final iabbroadcastlistener mlistener; public iabbroadcastreceiver(iabbroadcastlistener listener) { m...
Read more

python Tkinter Capturing keyboard events save as one single string -

is possible store keyboard events 1 string? code below stores 1 char , prints it. card reader or bar code reader, contains collection of character/ string not 1 character @ time. goal save char pressed text variable. from tkinter import * root = tk() def key(event): text= event.char text+= event.char print ("pressed", text) def callback(event): frame.focus_set() print ("clicked at", event.x, event.y) frame = frame(root, width=100, height=100) frame.bind("<key>", key) frame.bind("<button-1>", callback) frame.pack() root.mainloop() currently, creating text variable , everytime key() function gets called, , text stores last character typed. you can define text module level variable , , use module level text inside key function - text = '' def key(event): global text text+= event.char print("pressed", text)
Read more

sql server - Why does Linq-to-SQL add unnecessary COUNT()? -

here tables: create table customer ( cid int primary key, name varchar(32) ) create table ord ( oid int primary key, cid int foreign key references customer, address varchar(20) ) here's linq-to-sql statement: var aaa = c in db.customer select new { c, o = c.ord.tolist() }; and here's inexplicable query generated linq-to-sql: select [t0].[cid] [cid], [t0].[name] [name], [t1].[oid] [oid], [t1].[cid] [cid2], [t1].[address] [address], (select count(*) [dbo].[ord] [t2] [t2].[cid] = [t0].[cid]) [value] [dbo].[customer] [t0] left outer join [dbo].[ord] [t1] on [t1].[cid] = [t0].[cid] order [t0].[cid], [t1].[oid] i want understand how rid of count(*) part. it's entirely uncalled for! linq needs count(*) in order determine number of entries returned o = c.ord.tolist() .
Read more