It may sound like a lot, but I am looking for a language that is cross platform that I can compile into a single stand alone exe. The source code needs to be secure (Not just hidden) and have some sort of gui toolkit. Do any exist?
You won't find a language with more GUI toolkits or that is more cross-platform than the C programming language.
Well, your source secure is a problem - how do you define secure and why do you think you need it like this?
Cross plattform with only one compilation - hits only on .NET/mono and Java, both not interpreted, but work with a intermediate compilation of some sort of VM. Code can be relatively easy decompiled, though it can be obfuscated.
Cross plattform with compilation for every plattform is far easier, with C, C++ and many many more your have a great choice. You could then watch out for your GUI-Toolkit of choice and check the languages that have bindings for it.
I use REAL Studio (formally REALbasic) for creating standalone cross-platform applications. The apps are also compiled and fully native, so it sounds like they would meet your definition of secure.
And REAL Studio is a lot easier to start with Qt (unless you already happen to be a C++ expert).