Qt4 widget and nested layout issue.

[jacek]

I'm deleting the previous one in order to assign my next view.

OK and where do you call setLayout()?

[bunjee]

ZeLoginView::ZeLoginView(QWidget *parent, ZeClientController& clientController) : 
QWidget(parent)
{
	// Login layout
	mLoginLayout = new QGridLayout(parent);

ZeLoginView::ZeLoginView(QWidget *parent, ZeClientController& clientController) : 
QWidget(parent)
{
	// Login layout
	mLoginLayout = new QGridLayout(parent);

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In the constructor of mLoginLayout in ZeLoginView.

ZeUserView::ZeUserView(QWidget *parent, ZeUserController& userController) : 
QWidget(parent)
{
	mUserLayout = new QVBoxLayout(parent);

ZeUserView::ZeUserView(QWidget *parent, ZeUserController& userController) : 
QWidget(parent)
{
	mUserLayout = new QVBoxLayout(parent);

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In the constructor of mUserLayout in ZeUserView.

[wysota]

That's an awful way to do that (tightly couples the two widgets). Why not reuse the layout instead of creating a new one?

[bunjee]

In one case I need a QGrid in another a QHBox as main layout.

[wysota]

But in both cases they can be children of the parent widget's layout. Your "view" should be a complete widget (having its own layout), not a complete layout. Then you can simply add the widget to the parent's layout.

[jacek]

mLoginLayout = new QGridLayout(parent);
...
mUserLayout = new QVBoxLayout(parent);

I see, but in this case you end with a widget that has no layout and no child widgets.

[bunjee]

Thanks a lot guys,

I've changed my approach :
" One widget has one layout and sticks with it ".

Even though I don't understand why this option:

mLoginLayout = new QGridLayout(parent);
...
mUserLayout = new QVBoxLayout(parent);

mLoginLayout = new QGridLayout(parent);
...
mUserLayout = new QVBoxLayout(parent);

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... doesn't work.

[jacek]

Even though I don't understand why this option: [...]
... doesn't work.

Maybe you don't see any other widgets because they are hidden under those empty ZexxxView widgets?

[wysota]

Or you just didn't call show() on them...