ECMA Doc 8.8.4 Error

[Don Kim]

When I try to compile the following from the ECMA Docs:

#using <mscorlib.dll>
using namespace System;

public value class point {
int Xor;
int Yor;

public:
property int X {
int get() { return Xor; }
void set(int value) { Xor = value; }
}
property int Y {
int get() { return Yor; }
void set(int value) { Yor = value; }
}

point() {
move(0, 0);
}

point (int x, int y) {
move(x, y);
}

void move(int x, int y) {
X = x; //absolute move
Y = y;
}

void translate(int x, int y) {
X += x;
Y += y;
}
};

int main()
{
point p1;

p1.X = 10;
p1.Y = 5;
p1.move(5, 7);
point p2(9, 1);
p2.translate(-4, 12);
}
I get this error:

8_8_4.cpp(18) : error C3417: 'point::point' : value types cannot contain
user-defined special member functions

Anyone know why?

-Don Kim

[Willy Denoyette [MVP]]

Special member functions like default constructors, copy constructors and
destructors are not allowed on value classes.
SMF support has been withdrawn. IMO the example was written before the
withdrawal of the default constructor.
Maybe you could report this issue on
http://lab.msdn.microsoft.com/productfeedback

Willy.
"Don Kim" <in**@nospam.donkim.info> wrote in message
news:cP*******************@newssvr29.news.prodigy. com...

When I try to compile the following from the ECMA Docs:

#using <mscorlib.dll>
using namespace System;

public value class point {
int Xor;
int Yor;

public:
property int X {
int get() { return Xor; }
void set(int value) { Xor = value; }
}
property int Y {
int get() { return Yor; }
void set(int value) { Yor = value; }
}

point() {
move(0, 0);
}

point (int x, int y) {
move(x, y);
}

void move(int x, int y) {
X = x; //absolute move
Y = y;
}

void translate(int x, int y) {
X += x;
Y += y;
}
};

int main()
{
point p1;

p1.X = 10;
p1.Y = 5;
p1.move(5, 7);
point p2(9, 1);
p2.translate(-4, 12);
}
I get this error:

8_8_4.cpp(18) : error C3417: 'point::point' : value types cannot contain
user-defined special member functions

Anyone know why?

-Don Kim

[Don Kim]

"Willy Denoyette [MVP]" <wi*************@pandora.be> wrote in message
news:%2****************@TK2MSFTNGP12.phx.gbl...

Special member functions like default constructors, copy constructors and
destructors are not allowed on value classes.
SMF support has been withdrawn. IMO the example was written before the
withdrawal of the default constructor.
Maybe you could report this issue on
http://lab.msdn.microsoft.com/productfeedback
You seem correct. I removed the default constructor point(), and the
program compiled. I went ahead and reported to the link above. Thanks.

- Don Kim
"Don Kim" <in**@nospam.donkim.info> wrote in message
news:cP*******************@newssvr29.news.prodigy. com...

When I try to compile the following from the ECMA Docs:

#using <mscorlib.dll>
using namespace System;

public value class point {
int Xor;
int Yor;

public:
property int X {
int get() { return Xor; }
void set(int value) { Xor = value; }
}
property int Y {
int get() { return Yor; }
void set(int value) { Yor = value; }
}

point() {
move(0, 0);
}

point (int x, int y) {
move(x, y);
}

void move(int x, int y) {
X = x; //absolute move
Y = y;
}

void translate(int x, int y) {
X += x;
Y += y;
}
};

int main()
{
point p1;

p1.X = 10;
p1.Y = 5;
p1.move(5, 7);
point p2(9, 1);
p2.translate(-4, 12);
}
I get this error:

8_8_4.cpp(18) : error C3417: 'point::point' : value types cannot contain
user-defined special member functions

Anyone know why?

-Don Kim