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POHow to access Point Coordinates
 

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  1. POHow to access Point Coordinates
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    <p>Just starting out with GUI Windows programming. I'm working in Visual Studio C++ Wondows Forms.</p> <p>I've figured out how to grab the mouse coordinates and dump them into a double Point coordinate variable but when I try and access the the X &amp; Y values to manipulate them I get...</p> <pre><code>error C2248: 'System::Drawing::Point::x' : cannot access private member declared in class 'System::Drawing::Point' </code></pre> <p>The Point variable is called firstPoint and I'm trying to access the values using firstPoint.X and firstPoint.Y. I guess that's not the correct way to go about it.</p> <p>How do I go about converting the values into an int so I can mess with it? Convert::ToInt32(firstPoint.x) is what threw the errors.</p> <p>Google searches keep sending me to pointer topics not Point Coordinate topics.</p> <p>Additional code as requested:</p> <pre><code>private: /// &lt;summary&gt; /// Required designer variable. unsigned char ucRed, ucGrn, ucBlu; bool drawing; Point firstPoint, finalPoint; //int iShape, iX1,iY1,iX2,iY2; private: System::Void panel1_Paint_1(System::Object^ sender, System::Windows::Forms::PaintEventArgs^ e) { Graphics^ g = e-&gt;Graphics; //create an ellipse with // Black color // start position = firstPoint mouse coordinate // width = difference between firstPoint and finalPoint, height = difference between firstPoint and finalPoint g-&gt;DrawEllipse(Pens::Black,firstPoint.x,firstPoint.Y,(finalPoint.X-firstPoint.X),(finalPoint.Y-firstPoint.Y)); </code></pre>
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    1. USChef Flambe
    1. USChef Flambe
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    1. PO
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    1. CONot familiar with the Point class but you are trying to access a private member, hence the message. look for this class getters and you will probably find what you are looking for
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      1. POHow to access Point Coordinates
      1. USgiorashc
 

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