Beginner, trying to learn how to make an image.

Ok, so I'm trying to learn how to make ANYTHING in Direct X. I came across a bit of code, demonstrating how to do colors. Here it is

Code:

struct SColor
{
    int r;
    int g;
    int b;
};

SColor make_rgb( int r, int g, int b )
{
    SColor ret;
    ret.r = r;
    ret.g = g;
    ret.b = b;
    return ret;
}

I don't know how structs work, so can someone please explain that, and can someone explain how this would work. Are these Functions? Sorry, I'm just a really enthusiastic beginner programmer, wanting to make a colorful circle or somthing.

Well it is definetly not the full code to display any colors on your screen, its more just part of the explanation of how to make a color template to be reused for different combinations.

structures: http://www.cprogramming.com/tutorial/lesson7.html

//// now my senseless gabber comments that are probably incorrect, I dont like structs, grrawr

Code:

struct SColor //start a struct
{
    int r; //get a color value red
    int g; //get a color value for green
    int b; //get a color value for blue
}; //alright so its like a template that can be filled with defines outside

SColor make_rgb( int r, int g, int b ) //make a function using the struct
{
    SColor ret; //sets to the struct to edit variables
    ret.r = r; //uses 'ret' to set the 'r' in the struct up there to defined 'r'
    ret.g = g; //same with 'g'
    ret.b = b; //same with 'b'
    return ret; //
}

I dont know much about C++, and even less about structs.. but its just .. example code on how to use basic code to set the colors to be used by direct x to draw.. this script though doesnt draw anything.. just gives you a shortcut so you can go like so:

make_rgb(10,5,9);

and have the 10 be the r, 5 be the g, and 9 be the b, so then instruct SColor you could use your direct x displaying code using those r/b/g inputs.