(16 Bit..DOS ONLY) C++ using Assembly BIOS interrupts, draw rectangle

/* 
Coded by Patrick(Virtual Void)
May 26, 2011
thank my post /fmm
*/

#include <iostream.h>
#include <dos.h>
#define VID_SEG 0xA000
/* VID_SEG is the video segment */

void SetVideoMode13h()
{
	_AH = 0;
	_AL = 0x13; //Video mode
	geninterrupt(0x10);//generate interrupt 10h
}

void SetTextMode()
{
	_AH = 0;
	_AL = 0x03; //text mode
	geninterrupt(0x010); //generate int 10h
}

void DrawPixel(int x, int y, unsigned char Color)
{
	pokeb(VID_SEG, (y * 320) + x, Color); //320 is the screen width in 0x13 VGA mode
}

void DrawRect(int Top_Left_X,int Top_Left_Y, int Width, int Height, unsigned char Colour)
{
	DrawPixel(Top_Left_X, Top_Left_Y, Colour);

	int Bottom_Left_X = Top_Left_X;
	int Bottom_Left_Y = Top_Left_Y + Height;

	DrawPixel(Bottom_Left_X, Bottom_Left_Y, Colour);

	int Top_Right_X = Top_Left_X + Width;
	int Top_Right_Y = Top_Left_Y;

	DrawPixel(Top_Right_X, Top_Right_Y, Colour);

	int Bottom_Right_X = Top_Right_X;
	int Bottom_Right_Y = Top_Right_Y + Height;

	DrawPixel(Bottom_Right_X, Bottom_Right_Y, Colour);

	int t_x, b_x, l_y, r_y; // top x, bottom x, left y, right y, connect point

	// the equal signs show what side is drawn

	for(t_x = Top_Left_X; t_x <= Top_Right_X; t_x++) //  ======
	{                                               //   |    |
		DrawPixel(t_x, Top_Left_Y, Colour);    //    |    |
	}                                             //     |____|

	for(b_x = Bottom_Left_X; b_x <= Bottom_Right_X; b_x++) //  _____
	{                                                     //   |   |
		DrawPixel(b_x, Bottom_Left_Y, Colour);       //    |   |
	}                                                   //     =====
	
	for(l_y = Top_Left_Y; l_y <= Bottom_Left_Y; l_y++)   //   _____
	{                                                   //    =   |
		DrawPixel(Top_Left_X, l_y, Colour);        //     =   |
	}                                                 //      =___|
	
	for(r_y = Top_Right_Y; r_y <= Bottom_Left_Y; r_y++) //   _____
	{                                                  //    |   =
		DrawPixel(Top_Right_X, r_y, Colour);      //     |   =
	}                                                //      |___=

}


class Rectangle
{
	public:
	Rectangle(int Height_,int Width_,int TopLeftX_, int TopLeftY_,unsigned char color_) 
	{
		Height = Height_;
		Width = Width_;
		TopLeftX = TopLeftX_;
		TopLeftY = TopLeftY_;
		color = color_;
	}
	~Rectangle(){}
	//Rectangle attributes

	unsigned char color;

	int Height;
	int Width;

	int TopLeftX;
	int TopLeftY;

};


int main()
{
	cout << "Enter the Rect's:\nTop left X coord\nTop left Y coord\nWidth\nHeight\nColor(to 255)\nFill 1 or 0\n";
	//Just don't make anything cause a rect to be > 319,199, max res

	int tlx, tly, wid, hei;
	unsigned char col;

	cin >> tlx >> tly >> wid >> hei >> col;
	Rectangle rect(hei,wid,tlx,tly,col);

	cout << "Set Rect's attributes successfully. Press Enter for Rect\n";

	cin.ignore();
	cin.get();

	SetVideoMode13h();

	DrawRect(rect.TopLeftX,rect.TopLeftY,rect.Width,rect.Height,rect.color);

	cin.ignore();
	cin.get();
        rect.~Rectangle();
	SetTextMode();
	return 0;
}