Thread: how to declare this class function

Ok here is the problem... I have a functions that calls the following:

Code:

for (x=1; x < pict.getWidth()-1; x++) {
        for (y=1; y < pict.getHeight()-1; y++) {
            Color sum(0,0,0);

            for (int i=x-1, m=0; i <= x+1; i++, m++) {
                for (int j=y-1, n=0; j <= y+1; j++, n++) {
                    sum = sum.add( pict.getPixel(i,j).times( matrix[m][n] ) ); ///THIS LINE IS WHERE THE PROBLEM COMES FROM
                }
            }
            temp.setPixel(x, y, sum.divide( denom ) );
        }        
    }

now, I can't get the proper declaration for 'add', here is what I have for that class:

Code:

class Color
{
public:

    // Define constructors ...
	Color(int r, int g, int b);

	Color();

    // Define functions to do the following to a color:
    // add, subtract, times, divide, complement (subtract from 255),
    // constrain (ensure values are between 0 and 255)	
	Color add( Color c)
	{
		return Color( r + c.r,
					  g + c.g,
                      b + c.b );
	}

	Color sum();

	void subtract();
	void times(int matrix);
	void complement();
	void constrain();
	void devide();


    // Define functions to get the values of r, g, and b
	char red() { return r; };
	char green() { return g; };
	char blue() { return b; };
 
private:
    // Define r, g, b, as int
	int r, g, b;
	int height;

};

and just for completenes...here is the error I get:

Code:

c:\windows\desktop\image\imagemanip.cpp(376) : error C2664: 'add' : cannot convert 
parameter 1 from 'void' to 'class Color'

I know I'm overlooking something that is quite simple...any suggestions?

axon

Nevrmind...thisregard...I knew it was a simple mistake
I replaced:

Code:

void times(int matrix);
    // with....
Color times(int matrix);

axon