In a similar vein to the answer from Sergey Vlasov, there is another plugin for Visual Studio called ArrayPlotter that can plot arrays of type byte/short/int/float/double including interleaved and complex arrays.
It doesn't require you to modify the code to call the plotting routine. Any (practically) accessible memory can be treated as an array of the specified type and plotted whilst in a breakpoint in the debugger.
Disclaimer: I wrote the plugin