Changes between Initial Version and Version 1 of TutorialAddingNewParameter

Timestamp:

Nov 20, 2013, 11:53:44 AM (11 years ago)

Author:

Marek Kurdej

Comment:

created

TutorialAddingNewParameter

@@ +1 @@
+= Adding new parameter =
+
+Let us suppose that we want to add two new parameters to our component.
+First parameter, named "integer-value" of type ```int``` will be obligatory (required).
+Second one, named "floating-point-value" of type ```double``` will be defaulted (we will provide a default value and the user will not be obliged to set it.
+
+1. Add member fields to your component which will contain parameter values.
+
+For instance, your class can look like:
+
+{{{
+class MyComponent
+{
+public:
+    // ...
+
+private:
+    int mInteger;
+    double mDouble;
+};
+}}}
+
+2. Invoke ```addParameters()``` in your component constructor.
+This function returns an object that allows you to add parameters.
+Then, '''after ```()```''', add parameters:
+
+For a ''required'' parameter: add a line like ```("parameter-name", value<!ParameterType>(&variableToSetWithParameterValue)->required(), "parameter description"```.
+
+For a ''defaulted'' parameter: add a line like ```("parameter-name", value<!ParameterType>(&variableToSetWithParameterValue)->default_value(kDefaultParameterValue), "parameter description"```.
+
+{{{
+addParameters()
+("integer-value", value<int>(&mInteger)->required(), "integer value for test")
+("floating-point-value", value<double>(&mDouble)->default_value(kDefaultMemoryName), "floating-point value for test")
+;
+}}}