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Numerical value from pointArray[ i ]

Posted on 2004-08-17
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Last Modified: 2010-04-24
I need the numerical values of the x-coordinates of the points on the screen where I have clicked with the mouse. Briefly I do the following (say, clicking twice):



             // add mouse position to vertex list
               points->Add( __box( Point( e->X, e->Y ) ) );



               // if I clicked 2 times
               if ( points->Count  == 2 ) {

                  // create array of points
                  Point pointArray[] = new Point[ points->Count ];
                 
                  // add each point to the array
                  for( int i = 0; i < points->Count; i++ )
                     pointArray[ i ] = *(
                     dynamic_cast< Point* >( points->Item[ i ] ) );
                                                      }



As a result, I see in the messagebox MessageBox::Show(  pointArray[ 0 ].ToString(),  pointArray[ 1 ].ToString() ); the following:

{X=124,Y=231} and {X=67,Y=96}  

How do I extract the numerical values of the x-coordinates from these data (from the array pointArray[ i ])?
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Question by:judico
  • 2
4 Comments
 

Author Comment

by:judico
ID: 11822217
I got that:

X1 = pointArray[ 0 ].X;
X2 = pointArray[ 1 ].X;

but how does one first plot

void OnPaint( PaintEventArgs *paintEvent )      
{
<some code>
}

and then, after clicking twice and assigning non-zero values of X1 and X2, plots again

graphicsObject->DrawEllipse( pen, X1, X2, 7, 7 );  ?
0
 

Author Comment

by:judico
ID: 11822789
I got that too. After values X1 and X2 are made non-zero the graphics should be repainted through Refresh();
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ID: 11859253
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