can i write a slots with defalut param?

[opengpu2]

i want to write a slot like this: void AddFile(const QStringList& list = QStringList());
and then i can do this:

1. connect(xxx, SIGNAL(add()), xxx, AddFile() );
2. connect(xxx, SIGNAL(add(const QStringList&)), xxx, AddFile(const QStringList&));

is it Right?

ps. how to init a empty QStringList? what i wrote is right?

[mcosta]

Hi,

In your header file

void AddFile(const QStringList &l = QStringList());

[opengpu2]

thank you , and i tried it seems work fine.
is it a good way to write like this?

[mcosta]

Yes,

is a C++ standard to define functions with default values for parameters.
In example you can define

// You MUST provide _a but can omit _b and _c
void f(int _a, int _b = 0, int _c = 1);

and you can call it

f(3),
f(1, 2);
f(4, 5, 6);