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PODo I need to redefine the member selector operator in a User-Defined Type?
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copied!<p>I'm likely doing something boneheaded here, and I'd like a pointer (pardon the pun).</p> <p>I've defined the following class:</p> <pre><code>ref class CoordinatePair { public: int x; int y; CoordinatePair(); CoordinatePair(int xInput, int yInput); CoordinatePair(CoordinatePair ^Other); //CoordinatePair& operator->(); }; </code></pre> <p>Fairly simple. I find that I can select members using the <code>-></code> operator within the class's namespace with no ill effects. For example, the following compiles:</p> <pre><code>CoordinatePair::CoordinatePair(CoordinatePair ^Other) { x = Other->x; y = Other->y; } </code></pre> <p>Groovy. Yet, when I try to compile this, I get problems.</p> <pre><code>CoordinatePair^ Coordinates::TranslateCoords(CoordinatePair^ WorldCoords) { CoordinatePair^ newCoords = gcnew CoordinatePair(); float coordsRatio = 0.0; //Translate X coordsRatio = (float) WorldCoords->x / WorldBounds->x; newCoords->x = (int) (coordsRatio * PixelBounds->x); //Translate Y coordsRatio = 0.0; coordsRatio = (float) WorldCoords->y / WorldBounds->y; newCoords->y = (int) (coordsRatio * PixelBounds->y); return newCoords; } </code></pre> <p>(Note, in the above code, <code>WorldBounds</code> is a member of the <code>Coordinates</code> class. It itself is a <code>CoordinatePair</code> that defines the plane for my project.)</p> <p>Specifically I get this error:</p> <pre><code>.\Coordinates.cpp(95) : error C2819: type 'CoordinatePair' does not have an overloaded member 'operator ->' </code></pre> <p>Huh. Well, okay. My attempt to research this problem drove me to try overloading the operator. So, I added the following in the class declaration:</p> <pre><code>CoordinatePair^ operator->(); </code></pre> <p>And I defined it like so:</p> <pre><code>CoordinatePair^ CoordinatePair::operator->() { return this; } </code></pre> <p>That made the compiler <strong>even angrier!</strong> :-(</p> <pre><code>.\Coordinates.cpp(17) : error C2818: application of overloaded 'operator ->' is recursive through type 'CoordinatePair' y:\documents\wende-project\c3\wende_c3_executioncode\wende_c3_executioncode\c3_display\c3_app\Coordinates.h(7) : see declaration of 'CoordinatePair' .\Coordinates.cpp(17) : warning C4280: 'operator ->' was self recursive through type 'CoordinatePair' y:\documents\wende-project\c3\wende_c3_executioncode\wende_c3_executioncode\c3_display\c3_app\Coordinates.h(7) : see declaration of 'CoordinatePair' .\Coordinates.cpp(18) : error C2818: application of overloaded 'operator ->' is recursive through type 'CoordinatePair' y:\documents\wende-project\c3\wende_c3_executioncode\wende_c3_executioncode\c3_display\c3_app\Coordinates.h(7) : see declaration of 'CoordinatePair' .\Coordinates.cpp(18) : warning C4280: 'operator ->' was self recursive through type 'CoordinatePair' y:\documents\wende-project\c3\wende_c3_executioncode\wende_c3_executioncode\c3_display\c3_app\Coordinates.h(7) : see declaration of 'CoordinatePair' .\Coordinates.cpp(62) : error C2818: application of overloaded 'operator ->' is recursive through type 'CoordinatePair' y:\documents\wende-project\c3\wende_c3_executioncode\wende_c3_executioncode\c3_display\c3_app\Coordinates.h(7) : see declaration of 'CoordinatePair' .\Coordinates.cpp(62) : warning C4280: 'operator ->' was self recursive through type 'CoordinatePair' y:\documents\wende-project\c3\wende_c3_executioncode\wende_c3_executioncode\c3_display\c3_app\Coordinates.h(7) : see declaration of 'CoordinatePair' .\Coordinates.cpp(62) : error C2818: application of overloaded 'operator ->' is recursive through type 'CoordinatePair' y:\documents\wende-project\c3\wende_c3_executioncode\wende_c3_executioncode\c3_display\c3_app\Coordinates.h(7) : see declaration of 'CoordinatePair' .\Coordinates.cpp(62) : warning C4280: 'operator ->' was self recursive through type 'CoordinatePair' y:\documents\wende-project\c3\wende_c3_executioncode\wende_c3_executioncode\c3_display\c3_app\Coordinates.h(7) : see declaration of 'CoordinatePair' .\Coordinates.cpp(62) : error C2818: application of overloaded 'operator ->' is recursive through type 'CoordinatePair' y:\documents\wende-project\c3\wende_c3_executioncode\wende_c3_executioncode\c3_display\c3_app\Coordinates.h(7) : see declaration of 'CoordinatePair' .\Coordinates.cpp(62) : warning C4280: 'operator ->' was self recursive through type 'CoordinatePair' y:\documents\wende-project\c3\wende_c3_executioncode\wende_c3_executioncode\c3_display\c3_app\Coordinates.h(7) : see declaration of 'CoordinatePair' .\Coordinates.cpp(62) : error C2818: application of overloaded 'operator ->' is recursive through type 'CoordinatePair' y:\documents\wende-project\c3\wende_c3_executioncode\wende_c3_executioncode\c3_display\c3_app\Coordinates.h(7) : see declaration of 'CoordinatePair' .\Coordinates.cpp(62) : warning C4280: 'operator ->' was self recursive through type 'CoordinatePair' y:\documents\wende-project\c3\wende_c3_executioncode\wende_c3_executioncode\c3_display\c3_app\Coordinates.h(7) : see declaration of 'CoordinatePair' .\Coordinates.cpp(95) : error C2818: application of overloaded 'operator ->' is recursive through type 'CoordinatePair' y:\documents\wende-project\c3\wende_c3_executioncode\wende_c3_executioncode\c3_display\c3_app\Coordinates.h(7) : see declaration of 'CoordinatePair' .\Coordinates.cpp(95) : warning C4280: 'operator ->' was self recursive through type 'CoordinatePair' y:\documents\wende-project\c3\wende_c3_executioncode\wende_c3_executioncode\c3_display\c3_app\Coordinates.h(7) : see declaration of 'CoordinatePair' .\Coordinates.cpp(95) : error C2818: application of overloaded 'operator ->' is recursive through type 'CoordinatePair' y:\documents\wende-project\c3\wende_c3_executioncode\wende_c3_executioncode\c3_display\c3_app\Coordinates.h(7) : see declaration of 'CoordinatePair' .\Coordinates.cpp(95) : warning C4280: 'operator ->' was self recursive through type 'CoordinatePair' y:\documents\wende-project\c3\wende_c3_executioncode\wende_c3_executioncode\c3_display\c3_app\Coordinates.h(7) : see declaration of 'CoordinatePair' </code></pre> <p><a href="http://msdn.microsoft.com/en-us/library/kty7akd3%28v=vs.80%29.aspx" rel="nofollow">Looking up the error</a> gave me the following definition:</p> <blockquote> <p><em>application of overloaded 'operator ->' is recursive through type 'type'</em></p> <p>A redefinition of the class member access operator contains a recursive return statement. To redefine the -> operator with recursion, you must move the recursive routine to a separate function called from the operator override function.</p> </blockquote> <p>I clearly don't know what I'm doing here and need to be set in the right direction. Help?</p>

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