widget doesnt show

[tuli]

Hi,

I am probably missing something very simple, but i cant figure out what it is.

I have a QMainWIndow MyMainWindow, which shows up just fine. A toolbar holds an action.
When i click on the toolbar item, the action is triggered correctly, and the slot it is connected to is executed. The slot is a member of MyMainWindow.
The slot looks like this:

bool MyMainWin::myslot()
{
	MyWidget c(this);
	//c.setWindowModality(Qt::WindowModal);
	c.show();
	return 1;
}

bool MyMainWin::myslot()
{
	MyWidget c(this);
	//c.setWindowModality(Qt::WindowModal);
	c.show();
	return 1;
}

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As you can see, i just want it to show my custom widget "MyWidget", but it doesnt work.
It just steps over the c.show() call, but doesnt show anything.

I am using Qt 4.8.2 with VisualStudio 2008 and the QtAddin. Bot widgets/windows have been designed with the QtDesigner. The custom window shows just fine when i place above code right in main().

What am i missing?

[Rhayader]

You are creating MyWidget on the stack.
try creating it on the heap.

MyWidget *c=new Mywidget(this);
c->show();

MyWidget *c=new Mywidget(this);
c->show();

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[spirit]

MyWidget is a local variable, so it's going to be destroyed after exiting out of "myslot" scope.
You have to create a widget in the heap (e.g. using new).