C++/CLI: Instantiating Managed Objects with out using gcnew

Instantiating Managed Objects with out using gcnew

Consider a Test class

ref class Test { public:       //Trivial scalar property       property System::String^ Mail; };

Object Creation using gcnew Handles and the gcnew operator can be used to create instances:

int main(array<System::String ^> ^args) {       Test ^obj = gcnew Test();       obj->Mail = "Sen@Swolutions.com";       System::Console::WriteLine(obj->Mail);       return 0; }

Object Creation without gcnew And without using a handle - this looks like a value type (this is new with Visual Studio 2005 versions after Beta 1):

int main(array<System::String ^> ^args) {       Test test;       test.Mail = "Sen@Swolutions.com";       System::Console::WriteLine(test.Mail);       return 0; }

We can check the generated IL code !! both are same…here obth object are created in Heap.

.method assembly static int32  main(string[] args) cil managed {   // Code size       36 (0x24)   .maxstack  2   .locals ([0] class Test test,            [1] int32 V_1)   IL_0000:  ldc.i4.0   IL_0001:  stloc.1   IL_0002:  ldnull   IL_0003:  stloc.0   IL_0004:  newobj     instance void Test::.ctor()   IL_0009:  stloc.0   IL_000a:  ldloc.0   IL_000b:  ldstr      Sen@Swolutions.com   IL_0010:  call       instance void Test::set_Mail(string)   IL_0015:  ldloc.0   IL_0016:  call       instance string Test::get_Mail()   IL_001b:  call       void   [mscorlib]System.Console::WriteLine(string)   IL_0020:  ldc.i4.0   IL_0021:  stloc.1   IL_0022:  ldloc.1   IL_0023:  ret } // end of method 'Global Functions'::main