How to change Qcombobox popup width

[advseo32]

Hi, every body

I have subclasse QtableWidget to to accept Qcombobox in their cell,

I have maked that combobox show a Qtableview when the list popup,

but i have a probleme the Qtableview not showed completely, how i can acheive this ??

[raven-worx]

you can subclass QComboBox and reimplement showPopup() method if you need the size content dependent. Something like this:
@
void MyComboBox::showPopup()
{
this->view()->setMinimumWidth(this->view()->sizeHintForColumn(0));
QComboBox::showPopup();
}
@

[advseo32]

i have implemented this but still not working as i want
( Qcombobox editor should not resize , only the view inside it that can be resized )

her is my code

@void MyQComboBox::showPopup()
{
QWidget *view = this->view() ;
int width = view->width();
this->setMinimumWidth(width);
QComboBox::showPopup();
}@

it's like so

////////////////////////////////
// combobox //
//////////////////////////////////////////////////////////////////////////////////
// Qtableview her with all cells inside it ** Horizontal Header //
/////////////////////////////////////////////////////////////////////////////////
/// row 0 //
/////////////////////////////////////////////////////////////////////////////////
/// row 1 //
/////////////////////////////////////////////////////////////////////////////////
/// row 2 //
/////////////////////////////////////////////////////////////////////////////////

[raven-worx]

and you can't see a difference between my and your code?!
You set the minimum width to width... you wont notice anything with that code.

[advseo32]

i can't use this code @this->view()->setMinimumWidth(this->view()->sizeHintForColumn(0));@

the compiler show me an error !!!

this->view() it's ok but this->view()->setMinimumWidth() it's not possible
(because there is no member setMinimumWidth of this->view())

[advseo32]

[quote author="raven-worx" date="1375894826"]and you can't see a difference between my and your code?!
You set the minimum width to width... you wont notice anything with that code.[/quote]

Ok, i have figured out what you mean

@void MyQComboBox::showPopup()
{
QWidget *view = this->view() ;
// i can't use this because
// QWidget hasn't a method (sizeHintForColumn())
// so i have used this
this->setMinimumSize(view->sizeHint());
// but still i have a problem
QComboBox::showPopup();
}
@

like so,

////////////////////////////////////
// combobox //
// //
// I don't need this Height //
// //
// //
////////////////////////////////////
// Qtableview her with all //
//cells inside it ** Horizon //
// Header // //
///////////////////////////////////
/// row 0 // //
//////////////////////////////////
/// row 1 //
/////////////////////////////////

[raven-worx]

this->view() returns an QAbstractItemView which is derived from QWidget. QWidget has a method named setMinimumWidth() ....
what Qt version do you use?!

[advseo32]

[quote author="raven-worx" date="1375899990"]this->view() returns an QAbstractItemView which is derived from QWidget. QWidget has a method named setMinimumWidth() ....
what Qt version do you use?![/quote]

Sure, QWidget has a member function setMinimumWidth(),

my problem is inside setMinimumWidth(),

this->view()->sizeHintForColumn(0) ( QWidget hasn't a methode sizeHintForColumn(0)

[raven-worx]

no...but QAbstractItemView does!
Since you implicitly cast the view instance to a QWidget it's clear that the compiler complains about it!

[advseo32]

[quote author="raven-worx" date="1375905485"]no...but QAbstractItemView does!
Since you implicitly cast the view instance to a QWidget it's clear that the compiler complains about it![/quote]

I have no idea how i can do this

[raven-worx]

change the line
@
QWidget *view = this->view() ;
@
to
@
QAbstractItemView *view = this->view() ;
@

or just use the code i've posted in first place!

[advseo32]

[quote author="raven-worx" date="1375946208"]change the line
@
QWidget *view = this->view() ;
@
to
@
QAbstractItemView *view = this->view() ;
@

or just use the code i've posted in first place![/quote]

also not working for me , always the width of Qtableview don't increased

[advseo32]

how i can increase only the width of popup (Qtableview) ???

[advseo32]

like so,
////////////////////////////////
// combobox //
//////////////////////////////////////////////////////////////////////////////////
// Qtableview her with all cells inside it ** Horizontal Header //
/////////////////////////////////////////////////////////////////////////////////
/// row 0 //
/////////////////////////////////////////////////////////////////////////////////
/// row 1 //
/////////////////////////////////////////////////////////////////////////////////
/// row 2 //
/////////////////////////////////////////////////////////////////////////////////

[advseo32]

no body know about this ?

[advseo32]

plz inform me if my question is clear or no ?

[advseo32]

i have used this but not working

[Bowdzone]

This works perfect, Thank you very much.

[quote author="raven-worx" date="1375879559"]you can subclass QComboBox and reimplement showPopup() method if you need the size content dependent. Something like this:
@
void MyComboBox::showPopup()
{
this->view()->setMinimumWidth(this->view()->sizeHintForColumn(0));
QComboBox::showPopup();
}
@[/quote]