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# Numerical value from pointArray[ i ]

Posted on 2004-08-17
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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 ])?
0
Question by:judico
• 2

Author Comment

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

ID: 11822789
I got that too. After values X1 and X2 are made non-zero the graphics should be repainted through Refresh();
0

LVL 5

Accepted Solution

Netminder earned 0 total points
ID: 11859253
User resolved; closed, 50 points refunded.

Netminder
0

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