Highlight an item in QCombobox by text color

I have QCombobox, QStandardItemModel is used as a data model for it, every item in QCombobox it is a QStandardItem respectively, QTreeView is used as view. I try to select some (parent) combobox items by blue color like this:

Code:

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QStandardItem* all = new QStandardItem("some text");
all->setForeground(QBrush(QColor(Qt::blue)));

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or like this:

Code:

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all->setData(Qt::blue, Qt::ForegroundRole);

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In drop down list (tree) that element (item) is blue (highlighted), however when I select that item its text becomes black again which is default for all the items in the combobox. How can I fix that to keep desired item color when I select it?

Try creating and setting a custom item delegate. The way selections are drawn by the delegate, and it is there that it is decided how to draw the selected item.

I looked at delegates, however have not found how to draw selected item. Do You have any example link?

Seems delegate does not solve the problem:
http://www.qtforum.org/article/26686...rent-item.html

Have found the solution after writing bug report to nokia. ;) Solution: connect signal currentIndexChanged(int) of the combobox (signal activated(QModelIndex) from QTreeView was not emitted for some reason) and process it in a slot to change parent items color and font when selected:

Code:

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connect(myCombobox, SIGNAL(currentIndexChanged(int)), myCombobox, SLOT(setupComboboxFont()));

---

in slot we write:

Code:

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void KComboboxBox::setupComboboxFont()
{
	QFont comboboxFont = font();
	QPalette comboboxPalette = palette();
	QModelIndex index = ((QTreeView *)view())->currentIndex();
	if(!index.parent().isValid()) // parent index
	{
		comboboxFont.setBold(true);	
		comboboxPalette.setColor(QPalette::Text, Qt::blue);
		comboboxPalette.setColor(QPalette::WindowText, Qt::blue);
	}
	else
	{
		comboboxFont.setBold(false);	
		if(parentWidget() != 0)
			comboboxPalette = parentWidget()->palette();
	}
	setFont(comboboxFont);
	setPalette(comboboxPalette);
}

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That is all!!! Workable! :)

Quote:

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Originally Posted by AlekseyK

Have found the solution after writing bug report to nokia. ;) Solution: connect signal currentIndexChanged(int) of the combobox (signal activated(QModelIndex) from QTreeView was not emitted for some reason) and process it in a slot to change parent items color and font when selected:

Code:

---

connect(myCombobox, SIGNAL(currentIndexChanged(int)), myCombobox, SLOT(setupComboboxFont()));

---

in slot we write:

Code:

---

void KComboboxBox::setupComboboxFont()
{
	QFont comboboxFont = font();
	QPalette comboboxPalette = palette();
	QModelIndex index = ((QTreeView *)view())->currentIndex();
	if(!index.parent().isValid()) // parent index
	{
		comboboxFont.setBold(true);	
		comboboxPalette.setColor(QPalette::Text, Qt::blue);
		comboboxPalette.setColor(QPalette::WindowText, Qt::blue);
	}
	else
	{
		comboboxFont.setBold(false);	
		if(parentWidget() != 0)
			comboboxPalette = parentWidget()->palette();
	}
	setFont(comboboxFont);
	setPalette(comboboxPalette);
}

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That is all!!! Workable! :)

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In Line 5, I get a compiler error for view() are you casting view() to a (QTreeView *)

error: 'view' was not declared in this scope
QModelIndex index = ((QTreeView *)view())->currentIndex();

Quote:

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Originally Posted by emp1953

In Line 5, I get a compiler error for view() are you casting view() to a (QTreeView *)

error: 'view' was not declared in this scope
QModelIndex index = ((QTreeView *)view())->currentIndex();

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Well, view() is a valid method in a QComboBox subclass, so maybe you are not inside such a class?

Cheers,
_