Draw a line in MS VC++

Hi guys,

I am beginner in MS VC++. I have a 2D array (10 rows and 4 columns) like :

x1 y1 x2 y2
------------
1 1 3 4
2 3 2 5
. . . .
. . . .
3 2 1 4

I want to use the windows form application and draw all the lines for each row of my array which connect x1,y1 to x2,y2

How can I do this ?

Last edited on

progleo (26)

Like this?

#include <iostream>

#define ROW 10
#define COLUMN 4

int main ()
{
        int ten4 [ROW][COLUMN];
        int x1, y1, x2, y2, a, b, c, d;

        //fill array with ZERO's
        for (a = 0; a < ROW; a++)
                {
                for (b = 0; b < COLUMN; b++)
                        {
                                ten4[a][b] = 0;
                        }
                }

        std::cout << "First point" <<
        std::endl << "X: ";
        std::cin >> x1;
        std::cout << "Y: ";
        std::cin >> y1;

        std::cout << "Second point" <<
        std::endl << "X: ";
        std::cin >> x2;
        std::cout << "Y: ";
        std::cin >> y2;

        c = 0;
        d = 0;
        if(x1 != x2 && y1 != y2)
                {
                        std::cout << "Not possible yet" << std::endl;
                        c = 1;
                }
        if(x1 != x2 && y1 == y2)
                {
                        std::cout << "Not possible yet" << std::endl;
                        c = 1;
                }
        if(x1 == x2 && y1 == y2)
                {
                        ten4[y1][x1] = 1;
                        c = 1;
                }
        if(c != 1)
                {
                        while(d != 1)
                                {
                                        for(a = y1; a <= y2; a++)
                                                {
                                                        ten4[a][x1] = 1;
                                                }
                                        d = 1;

                                }
                }
        //#here
        for (a = 0; a < ROW; a++)
                {
                for (b = 0; b < COLUMN; b++)
                        {
                                std::cout << ten4[a][b];
                        }
                        std::cout << std::endl;
                }

}

I helped you here, change the code a little and it propably will work for you. This was using g++

Last edited on

narimanid (2)

Actually as I said I wanna draw the lines in the windows application form, not in the console ! So, any idea?

closed account (E0p9LyTq)

There is Windows' GDI LineTo function:

https://msdn.microsoft.com/en-us/library/windows/desktop/dd145029%28v=vs.85%29.aspx

It is a bit retro, but it works with API programs. I don't have a clue if it would work with the Windows Form framework.

Last edited on

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Draw a line in MS VC++