Beginner question about constructing sub objects

Development Programming & Scripting C++
1

Hi,

Im fairly new to C++ and have some problems to define a subobject in a class.

Lets say I have simple class that looks like this:

.h


#pragma once

#include "USimpleClass.generated.h"

UCLASS()
class XOF_API USimpleClass : public UObject
{
	GENERATED_BODY()

private:

	int Value;
	int GetValue();
	void SetValue(int AValue);

public:
	// Default constructor. No parameters expected.
	USimpleClass();

	//Extended constructor. Integer parameter expected.
	USimpleClass(int);

	// Default destructor. No parameters expected.
	~USimpleClass();

	// Value property
	__declspec (property (put = SetValue, get = GetValue)) int ValueProp;
};

.cpp


#include "XOF.h"
#include "USimpleClass.h"


USimpleClass::USimpleClass()
{
	ValueProp = 42;
}

USimpleClass::USimpleClass(int InitialValue)
{
	ValueProp = InitialValue;
}

USimpleClass::~USimpleClass()
{
}

int USimpleClass::GetValue()
{
	return Value;
}

void USimpleClass::SetValue(int AValue)
{
	if (AValue < 0)
	{
		Value = 0;
	} 
	else
	{
		Value = AValue;
	}
	return;
}

So the class has two constructors. The default one (which initializes the value to 42); and anotherone that takes a parameter that is used to initialize the Value field (which is accesses via a property).

That all compiles lovely, but now I want to make this class (or better: an instance of it) a subobject of another, more complex, class.
That other class looks like this:

.h


#pragma once

#include "USimpleClass.h"
#include "UComplexClass.generated.h"

UCLASS()
class XOF_API UComplexClass : public UObject
{
	GENERATED_BODY()

private :

	int Foo;
	USimpleClass HelperObj(69);  // compiler error C2059 here
	bool Bar;

public:

	UComplexClass();
	~UComplexClass();
};

.cpp


#include "XOF.h"
#include "UComplexClass.h"

UComplexClass::UComplexClass()
{
}

UComplexClass::~UComplexClass()
{
}

What am I doing wrong ?

Any help is appreciated :slight_smile:

Cheers,
Klaus