I’ve declare a text type part in .edc file, as the code:

        part { 
            name: "top_right_button";
            type: TEXT;
            scale: 1;
            description {
                state: "default" 0.0;
                rel1 { relative: 0.6 0.0; to: "header"; }
                rel2 { relative: 1.0 1.0; to: "header"; }
                align: 0.5 0.5;
                text {
                    font: "Tizen:style=Regular";
                    size: 18;
                    text: "+";
                    min: 1 1;
                    align: 0.9 0.5;
                }
                color: 255 255 255 255;
            }
        }

Now, I wanna to add a click event callback in .c file for this part, is it possible? I want to aviod use the button widget.