How to get coordinates of mouse after left mouse button is released after drag in OpenGL?

Question

I want to get the coordinates of my mouse after the left mouse button is released after being dragged in OpenGL? I am new to this and wanted to know how I can implement it.

Answer 1

I found this method and I am using GLUT.

void myMouse(int button, int state, int x, int y) 
{
// If left button was clicked
    if (button == GLUT_LEFT_BUTTON && state == GLUT_DOWN) 
    {
        
    }
    // Event after mouse is clicked and released
    else if (button == GLUT_LEFT_BUTTON && state == GLUT_UP) 
    {
        //initialize a point and set it coordinates given to us by the function
        Point p1;
        p1.setxy(x, y);
    }
}