how to read INI file and put into the array

victor wang

Hi, i'm using Qt5.5 on my embedded linux computer.
It is my code here

I wanna put childkey and values into array.
Then compare them.
But i don't know how to do it.
Please Help!

jsulm

@victor-wang Then put them into your array. What exactly is the problem?

victor wang

@jsulm
I got a new way to solve but i got some problem here.
This is my code here

And i got errors here

I'm trying to analyze the childkey.
What else i can do to solve the problem of switch case?

jsulm

@victor-wang You cannot use a string in switch - the error message actually says that.
You can only use integers in switch. You either use if ... else if... or you convert your string keys to integers/enum values.

J.Hilk

@victor-wang

The error messaged is quite clear,

you're only allowed to use integers als switch key. Strings are not defined.

You'll have to do write that yourself or go the old-fashioned way of

if(){

}else if{

}else if{
}
...

Be warned however, comparing strings is not a fast process.

victor wang

@jsulm
Can you give me an example, i don't know how to do it.

@J-Hilk
I can just only use if...else if...else for instead?

jsulm

@victor-wang How to use if? @J-Hilk already did. But here again:

if (childKey == "aaa") {
...
} else if (childKey == "bbb") {
...
} else if...

You can have an enum:

enum MyEnum
{
   AAA,
   BBB,
   CCC,
....
}

// Ten a convert function
MyEnum convert(QString key)
{
    if (childKey == "aaa") {
        return AAA
    } else if (childKey == "bbb") {
       return BBB
    } else if...

}

// then your switch
MyEnum key = convert(childKey);
switch(key)
{
    case AAA:
        break;
    case BBB:
        break
...
}

J.Hilk

@jsulm @victor-wang

Actually you dont have to go through the pain to define a convert-function

enum myEnum{/
        AAA,
        BBB,
        CCC,
        ...
    };
    Q_ENUM(myEnum)

...
QString s = StringFromSettings;
myEnum switchKey = static_cast<myEnum>(QMetaEnum::fromType<myEnum>().keyToValue(s.toLocal8Bit().data()));

switch (switchKey){
case AAA:...break;
...
default: .... break;
}