由於標題說我想創建類Note的對象並將其指針添加到類Traymenu的對象列表中。我錯過了我猜想的所有事情,請看看我如何在traymenus的newNote中調用Note的構造函數以及我在note.h中做了什麼。將類的實例傳遞給另一個構造函數,該構造函數將其對象添加到傳遞實例擁有的列表中
traymenu.h:
#ifndef TRAYMENU_H
#define TRAYMENU_H
#include <QSystemTrayIcon>
#include <QIcon>
#include <QPixmap>
#include <QMenu> //in use for context menu
#include <QList>
#include "note.h"
class Traymenu : public QSystemTrayIcon
{
public:
Traymenu();
~Traymenu();
void createMainContextMenu();
void newNote(QWidget, Traymenu);
void exitProgram();
private:
QSystemTrayIcon mainIcon;
QMenu mainContextMenu;
QList<Note> notelist; //List that holds references to Note objects
//template argument 1 is invalid
};
#endif // TRAYMENU_H
traymenu.cpp:
#include "traymenu.h"
#include <QDebug>
Traymenu::Traymenu(){
mainIcon.setIcon(QIcon(QPixmap("C:\\program.png")));
mainIcon.setVisible(true);
mainIcon.show();
createMainContextMenu();
}
Traymenu::~Traymenu(){
}
void Traymenu::newNote(){
Note(Traymenu *this); //HOW TO PASS THE TRAYMENU INSTANC TO NOTE???
}
void Traymenu::exitProgram(){
delete this; //deletes traymenu object (icon disappears)
}
void Traymenu::createMainContextMenu(){
QAction *actionNewNote = mainContextMenu.addAction("Neue Notiz");
mainContextMenu.addSeparator();
QAction *actionExitProgram = mainContextMenu.addAction("Programm beenden");
actionNewNote->setIcon(QIcon("C:\\new.ico"));
actionNewNote->setIconVisibleInMenu(true);
//Qt5 new signal connection: http://qt-project.org/wiki/New_Signal_Slot_Syntax
QObject::connect(actionNewNote,&QAction::triggered,this,&Traymenu::newNote);
QObject::connect(actionExitProgram,&QAction::triggered,this,&Traymenu::exitProgram);
mainIcon.setContextMenu(&mainContextMenu);
}
note.h:
#ifndef NOTE_H
#define NOTE_H
#include <QWidget>
#include "traymenu.h"
namespace Ui{
class Note;
}
class Note : public QWidget
{
public:
Note(QWidget *parent = 0, Traymenu *trayMenuIn);
~Note();
void appendNoteToNotelist();
private:
Q_OBJECT
Ui::Note *ui;
Traymenu *pTraymenu = &trayMenuIn; //trayMenuIn was not declared in this scope
//Why declare a formal parameter?
};
#endif // NOTE_H
note.cpp:
#include "note.h"
#include "ui_note.h"
Note::Note(QWidget *parent, Traymenu *trayMenuIn) :
QWidget(parent),
ui(new Ui::Note)
{
ui->setupUi(this);
Note::appendNoteToNotelist();
}
Note::~Note()
{
delete ui;
}
void Note::appendNoteToNotelist(){
pTraymenu.append(&ui);
}
+1提供的源代碼,-1代碼與傾銷代碼有很多與問題本身無關的問題 –