I am trying to find a way to develop wingpanel extension in plain C code. Every time that I asked question about app development in elementary OS, They just said that you should learn Vala language. Why should I learn Vala language when the platform for developing elementary app is GKT & GTK is completely written in C language & has C base api. So please help me. I really need this. I am really tired of learning new language & new build system & new api & ... .
Build the sample indicator and look at the generated c code. https://github.com/elementary/wingpanel/tree/master/sample