should i use listview ?

[rimie23]

i try to do that
in my class QMainWindow

class MainWindow : public QMainWindow
{
Q_OBJECT
 
public:
.......................
listView = new QListView(dockWidgetContents_8);
            listView->setObjectName(QString::fromUtf8("listView"));
            listView->setGeometry(QRect(0, 0, 281, 290));
 
			QStandardItemModel *model=new QStandardItemModel();
			listView->setModel(model);

class MainWindow : public QMainWindow
{
Q_OBJECT

public:
.......................
listView = new QListView(dockWidgetContents_8);
            listView->setObjectName(QString::fromUtf8("listView"));
            listView->setGeometry(QRect(0, 0, 281, 290));

			QStandardItemModel *model=new QStandardItemModel();
			listView->setModel(model);

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in my class ogre widget (where i create my objects

................................................. add an object
QStandardItem *item=new QStandardItem(QString ("Cube  %0").arg(count));
 
 model->setItem(count,item);
  QListView *listview;
 listview->update();

................................................. add an object
QStandardItem *item=new QStandardItem(QString ("Cube  %0").arg(count));

 model->setItem(count,item);
  QListView *listview;
 listview->update();

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but it dos not work

[Le_B]

mmmm... you should use appendRow(item) instead of setItem
the listview->update(); is not necessary the model should send the new info to the view into the appendRow() function
the model pointer into the add object funtion where did you get it ?

always use "this" as the parent pointer when you use new or you will leak

[rimie23]

mmmm... you should use appendRow(item) instead of setItem
the listview->update(); is not necessary the model should send the new info to the view into the appendRow() function
the model pointer into the add object funtion where did you get it ?

always use "this" as the parent pointer when you use new or you will leak

yes i use appendRow but nothing it happend

the model pointer into the add object funtion where did you get it ?

what you mean ? i just make that

QStandardItemModel *model=new QStandardItemModel();
			listView->setModel(model);

QStandardItemModel *model=new QStandardItemModel();
			listView->setModel(model);

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always use "this" as the parent pointer when you use new or you will leak

where i use it ?
(sorry i know that my questions is a lot but i try to understand to do somthing good)

[Le_B]

1) the listview is created into the mainwindow class and you call listView->setModel(model); into the ogre widget class
so i want to know where you got that pointer "listview" 'just to check that it comes from the mainwindow class and is the same)

2) all QObject can have a parent QObject pointer pass as a constructor parameter. when the parent is destroyed it will automaticaly destroy his children.
so when you do new QStandardItemModel(); you should do new QStandardItemModel(this); for exemple
there is very few times when you don't want to do that

[rimie23]

so i want to know where you got that pointer "listview" 'just to check that it comes from the mainwindow class and is the same

i did not got any pointer (i just write the same code in my repling, i read that in qt assistant exemple ) shall i define pointer ? how i do that

so when you do new QStandardItemModel(); you should do new QStandardItemModel(this); for exemple

ahhhh, ok i will do that

[Le_B]

can you put the entire function please ?

[rimie23]

ok
that's the code of add_object

void OgreWidget::add_object(const Ogre::Vector3 &pos)
{
 
	Ogre::String name1 = "entity " + Ogre::StringConverter::toString(Ogre::Root::getSingletonPtr()->getTimer()->getMicroseconds());
	mEntity = ogreSceneManager->createEntity(name1, Ogre::SceneManager:: PT_CUBE);
 
        Ogre::MaterialPtr material1111 = Ogre::MaterialManager::getSingleton().create("green", "General");
 
 
    material1111->getTechnique( 0 )->getPass( 0 )->setAmbient(1, 1, 0);
    mEntity->setMaterial(material1111);
		Ogre::String name = "Node " + Ogre::StringConverter::toString(Ogre::Root::getSingletonPtr()->getTimer()->getMicroseconds()); // Provides a unique timestamp - the time since the application was started in microseconds.
mNode = ogreSceneManager->getRootSceneNode()->
            createChildSceneNode(name, pos); 
 mNode->attachObject(mEntity);
 count++;
 
 QStandardItem *item=new QStandardItem(QString ("Cube  %0").arg(count));
 
 //model->setItem(count,item);
 model->appendRow(item);
 QListView *listview;
 listview->update();
 
	ogreRenderWindow->update();
   this->update();
 
	}

void OgreWidget::add_object(const Ogre::Vector3 &pos)
{

	Ogre::String name1 = "entity " + Ogre::StringConverter::toString(Ogre::Root::getSingletonPtr()->getTimer()->getMicroseconds());
	mEntity = ogreSceneManager->createEntity(name1, Ogre::SceneManager:: PT_CUBE);
	
        Ogre::MaterialPtr material1111 = Ogre::MaterialManager::getSingleton().create("green", "General");


    material1111->getTechnique( 0 )->getPass( 0 )->setAmbient(1, 1, 0);
    mEntity->setMaterial(material1111);
		Ogre::String name = "Node " + Ogre::StringConverter::toString(Ogre::Root::getSingletonPtr()->getTimer()->getMicroseconds()); // Provides a unique timestamp - the time since the application was started in microseconds.
mNode = ogreSceneManager->getRootSceneNode()->
            createChildSceneNode(name, pos); 
 mNode->attachObject(mEntity);
 count++;
 
 QStandardItem *item=new QStandardItem(QString ("Cube  %0").arg(count));

 //model->setItem(count,item);
 model->appendRow(item);
 QListView *listview;
 listview->update();
	
	ogreRenderWindow->update();
   this->update();

	}

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i just do that

[Le_B]

so "model" must be a member variable of OgreWidget
and it must be set somewhere right ?

[rimie23]

beh
i define model in mainwinows

lass MainWindow : public QMainWindow
{
Q_OBJECT
 
public:
 
listView = new QListView(dockWidgetContents_8);
listView->setObjectName(QString::fromUtf8("listView"));
listView->setGeometry(QRect(0, 0, 281, 290));
 
QStandardItemModel *model=new QStandardItemModel();
listView->setModel(model);

lass MainWindow : public QMainWindow
{
Q_OBJECT
 
public:

listView = new QListView(dockWidgetContents_8);
listView->setObjectName(QString::fromUtf8("listView"));
listView->setGeometry(QRect(0, 0, 281, 290));
 
QStandardItemModel *model=new QStandardItemModel();
listView->setModel(model);

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i think i bad understand how i use the "model" no? (i modifate qt assistant exemple )

[Le_B]

so you must have a crash when doing model->appendRow(item); in OgreWidget right ?
if it s true it s just that you need that ogreWidget ask for the model pointer to Mainwindow, else how do you want OgreWidget to know what model is ?

[rimie23]

you need that ogreWidget ask for the model pointer to Mainwindow, else how do you want OgreWidget to know what model is ?

how i do that (when i see the exemple in qt assistant it make just like that maybe because he is in the same class?)
so how i said to ogre widget to applicate the model in mainwindows , but at first is my definition of the model in mainwinows true ?

[Le_B]

just create a set_model function(const QStandardItemModel *model) function in ogrewiget that will save the pointer value to a member variable
then call it after you create the model in mainwindow (i suppose you create the ogrewidget in the same function as the model)