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    <p>The constructor argument <code>o</code> is a <em>copy</em> of the <code>Object1</code> instance you passed in (since it's being passed <em>by value</em>. In your constructor, when you set your member pointer to its address, that address is the stack frame, which will be invalid after your constructor returns.</p> <p>Here's another way to do this (there are other ways, of course):</p> <pre><code>class Object1 : BaseClass { BaseClass *link; int i; public: // - Prefer initialization to assignment // - Initialize ALL of your members Object1(int a) : link(NULL), i(a) {} // This instance assumes ownership of p Object1(int a, Object1 *p) : link(p), i(a) {} ~Object1() { delete link; } }; int main() { Object1 a(1, new Object1(2)); ... } </code></pre> <p>EDIT: Hmmmm, the only way I can see for you to use the chaining design you have is something ugly like this:</p> <pre><code>class Object1 : BaseClass { BaseClass *link; int i; public: Object1(int a) : link(NULL), i(a) {} Object1(int a, const Object1&amp; o) : link(new Object1(o)), i(a) {} // Copy constructor Object1(const Object1&amp; other) : link(NULL), i(other.a) { // Deep copy linked object if (other.link != NULL) { link = new Object1(*other.link); } } // Assignment operator that does deep copy const Object1&amp; operator=(const Object1&amp; that) { // Check for assignment to self if (this != &amp;that) { delete this.link; this.link = NULL; // Deep copy linked object if (that.link != NULL) { this.link = new Object1(*that.link); } this.i = that.i; } } ~Object1() { delete link; } }; int main() { Object1 a(1, new Object1(2)); ... } </code></pre>
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    1. POC++ syntax of constructors " 'Object1 a (1, Object1(2))''
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    1. USScott Smith
    1. USScott Smith
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    1. COsorry, this will work, but I must support original syntax `Object1 a(1, Object1(2));`
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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