QCheckListItem with multiple columns?

Is there a way to create a QCheckListItem with multiples columns in Qt 3?

I want a function similar to:

QListViewItem( QListView * parent,
QString, QString = QString::null,
QString = QString::null, QString = QString::null,
QString = QString::null, QString = QString::null,
QString = QString::null, QString = QString::null );

but with a check box in the first column.

Every QCheckListItem is a QListViewItem.

Fair enough. I can write:

QListView* listView;
QCheckListItem *oneColumn = new QCheckListItem( listView, "A" );

with no problem. However, If I write

QCheckListItem *twoColumms = new QCheckListItem( listView, "A", "B" );

under Windows, I get the error message:

error C2664: 'QCheckListItem::QCheckListItem(QCheckListItem *,const QString &,QCheckListItem::Type)' : cannot convert parameter 3 from 'const char [2]' to 'QCheckListItem *'
Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast

Similarly, if I write

QCheckListItem *threeColumms = new QCheckListItem( listView, "A", "B", "C" );

the error is:

error C2664: 'QCheckListItem::QCheckListItem(QCheckListItem *,QListViewItem *,const QString &,QCheckListItem::Type)' : cannot convert parameter 2 from 'const char [2]' to 'QCheckListItem *'
Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast

If I attempt four or more columns,

QCheckListItem *fourColumms = new QCheckListItem( listView, "A", "B", "C", "D" );

the error is:

error C2661: 'QCheckListItem::QCheckListItem' : no overloaded function takes 5 arguments

None of the QCheckListItem constructors seem to give me the option of having more than one column.

Am I missing something obvious?

Quote:

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Originally Posted by ecphora

QCheckListItem *twoColumms = new QCheckListItem( listView, "A", "B" );

under Windows, I get the error message:

error C2664: 'QCheckListItem::QCheckListItem(QCheckListItem *,const QString &,QCheckListItem::Type)' : cannot convert parameter 3 from 'const char [2]' to 'QCheckListItem *'
Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast

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QCheckListItem does not have a constructor which would take several column labels.
Try this:

Code:

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QCheckListItem *twoColumms = new QCheckListItem( listView, "A");
twoColumns->setText(1, "B");

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That does the trick, and I guess it was fairly obvious, although I didn't think of it.

In the meantime, since I needed to get the job done, I subclassed QListViewItem, and overrode paintCell() and activate() to draw my own checkbox and toggle the state. That approach works too, and I can write my constructor to have multiple strings like the QListViewItem constructor does.

Surely it would make more sense to do that with QCheckListItem?

Well, it would have made sense if I'd figured out how to use QCheckListItem with multiple columns first. Like I said, I had to get some code working, and I took the only path I could think of before jpn posted the solution. I really don't mind drawing my own checkbox and maintaining its state. It only took a few minutes to implement.

Quote:

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Originally Posted by ecphora

Well, it would have made sense if I'd figured out how to use QCheckListItem with multiple columns first. Like I said, I had to get some code working, and I took the only path I could think of before jpn posted the solution. I really don't mind drawing my own checkbox and maintaining its state. It only took a few minutes to implement.

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Fair enough, it just seems odd that you'd want to do something that Qt already implements for you, but whatever works I guess...

It seems to me that the overloaded constructors of endless parameter lists (1-9 strings) are unecessary. setText() does the job just fine for as many columns as you want. This constructor style used in Qt3 has certainly been deprecated in Qt4 in favour of a clearer API:

http://doc.trolltech.com/qq/qq13-api...onveniencetrap