Re: FXJSON

All you need to do to read .json file is:


    FXJSONFile json;
    FXVariant var;

    if(json.open("myfile.json",FXJSON::Load)){

        FXJSON::Error loaderr=json.load(var);

        if(loaderr==FXJSON::ErrOK){

           // Success!

	   ....
         }
        else{
           fxmessage("Error: %s:%d:%d: %s\n","myfile.json",json.getLine(),json.getColumn(),FXJSON::getError(loaderr));
        }
        json.close();
    }
    else{
      fxwarning("Error: unable to open: \"%s\" for reading.\n","myfile.json");
    }

If successful, FXVariant var will contain the contents of
the json file.

If the contents of the json file was something like:

	{
		"data" : [1, 2, 3, "string"]
	}

then you can read it as:

	FXdouble D=var["data"][2];
	FXString S=var["data"][3];

The value of D should be equal to 3.0, and the value of S should be "string".

To write a json file, you'd first populate your top-level variant with the
data of your choice:


	FXVariant var;

	var["name"]="Rick Astley";

	var["status"]="rolled";

	var["where"][0]="London";

	var["where"][1]="Paris";	

	var["where"][2]["lat"]=20.0;	

	var["where"][2]["lon"]=30.0;

	FXJSONFile json;
	json.open("rickrolocations.json",FXJSON::Save)){
		json.save(var);
	 	json.close();
	}

which should produce a json file:

	{       
		"name" : "Rick Astley",
		"status" : "rolled",
		"where" : [ 
			"London, 
			"Paris", 
			{ 
				"lat" : 20.0, 
				"lon" : 30.0 
			} 
		]
	}

The precise layout of the text depends on the various pretty-printing
options you select; 

FYI, FXJSON and FXJSONFile don't like you to use their copy constructor or 
assignment operators; that's probably why you see compile errors.


	Regards,


		-- JVZ


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