Client Scope Data points

[zscriven]

Is there a way to create data points that can have a unique value for each client?

[mkoller]

You can set a DPE to a value generated by the CTRL function createUuid()

[RudiKreiner]

You can make a UI specific DP like this,
then fill it with the UI specific information that you want:


for (int i = 1; i < 10; i++)
{
string dp_name = "InfoUI_" + i);
dpCreate(dpCommon, "ExampleDP_Int");
dpSet(dp_name +".", add whatever info you want here);
}


It doesn't have to be of the type ExampleDP_Int, you can use whatever type you need.

Each UI can then get that information like this, for example:
int info;
dpGet( "InfoUI_" + myManNum() + ".", info);


Or you could create a dynamic datapoint whose contents is mapped to the UI with correspondig index, something like this;
I assume here that you have created a dyn int type named UI_INFO for the UI specific info that you want to store.

dpCreate("UI_Info, "UI_INFO");
dyn_int infos = makeDynInt(100,200,300,400);
dpSet("UI_Info.", infos)


Each UI can then get that information like this, for example:

dyn_int infos;
dpGet( "UI_Info.", infos);
int my_info = infos[myManNum()];


WinCC OA actually uses this technique for managing the UIs as you can see by looking at the internal datapoints of the type "_Ui"
There you can see which user is (or was last) logged in on each UI and on which display the UI is (was) running, for example.

Hope that helps you.

[zscriven]

Thanks for the great detailed explanation.