Convert my mt4 indicators to C language and post them onto a chart

I have custom mt4 indicators that produce buy and trade signals on the mt4 trading platform. I want my own 3rd party chart built, and I want my indicators converted to work on this chart and run on my desktop independent of mt4. I have a data feed through fxcm, so that is not problem, I just need an open source chart built/setup and my indicators converted and everything connected to read from the datafeed. This should be able to all work on a desktop running as its own freestanding application. The chart should have basic functions but nothing as fancy as mt4, just something very simple to be able to see the bars and read the signals my indicators produce.