Rhaaa, many problems with UPP 11873. I use TDM-GCC-64 compiler. If now i see setLineColor function in the IDE, i still have the error message when i compile
I agree to omari's suggestion that you should better use the MingGW64 version bundled with u++.
Aside from that, did you check the spelling? U++ does not use the so-called "camel case" notation: There is no setLineColor method in SQLArray. It should be SetLineColor.
Please take your time and read documentation (especially on coding style), it will help you a lot.