把context写在函数内部第一次调用这个dll时候就会出现乱码,第二次开始就正常了
const wchar_t* ToUnmanaged(System::String^ managedString)
{
gcrootmsclr::interop::marshal_context^ context = gcnew msclr::interop::marshal_context();
const wchar_t* ret= context->marshal_as<const wchar_t*>(managedString);
msclr::interop::marshal_context^ unpacked = context;
if (unpacked != nullptr)
delete unpacked;
return ret;
}
改成全局变量或者把delete释放资源那一部分删除就没有问题了,不是运行完之后dll会卸载然后释放资源吗,为什么会存在这种情况,理解不了
gcrootmsclr::interop::marshal_context^ context;
const wchar_t* ToUnmanaged(System::String^ managedString)
{
msclr::interop::marshal_context^ unpacked = context;
if (unpacked != nullptr)
delete unpacked;
context = gcnew msclr::interop::marshal_context();
return context->marshal_as<const wchar_t*>(managedString);
}