unresolved external symbol "void * __cdecl operator new

When you do not use the default libraries with Visual Studio C++ you can come far with just linking to MSVCRT. However, you run into trouble when using C++ and classes. These use the new and delete operators.

According to the Internet it can be solved by just overloading the new and delete operators.

void* operator new(size_t size) { return malloc(size); }
void* operator new[](size_t size) { return malloc(size); }
void operator delete(void* what) { free(what); }
void operator delete[](void* what) { free(what); }

However, this did not work. I still got a error on the delete operator. So, what I did was transform the code:

GuiThread* guiThread = new GuiThread();
Became:
GuiThread* guiThread = (GuiThread*)calloc(1, sizeof(GuiThread));

guiThread->threadHandle = CreateThread(NULL, 0, GuiThread::StaticThreadStart, (void*)guiThread, 0, &guiThread->threadID);

delete guiThread;
Became:
free(guiThread);