Thread: Colours?

try adding this function:


void color(int color)
{
SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HA NDLE),color);
}

then call it with a number, i.e color(5); and it will change to a different color.

Here is a simple utility I made to use in my AP Computer Science AB class. It works well with visual c++. Granted you could probably add more functionality to it, but all we really need in class is that added color to give it a final touch.

The location function appears to work but it seems a little erratic with odd buffer sizes.

It works with or without using the namespace version of iostream
We have a lot of problems with mismatched header files like that in class. As a matter of fact, does anyone know how to resolve namespace versus non-namespace header file conflicts with ease?

Code:

#ifndef _CONSOLE_LIBRARY_INTERFACE
#define _CONSOLE_LIBRARY_INTERFACE

#include <windows.h>
WORD cl_fc_param = 0;
WORD cl_bc_param = 0;

void text_color(bool red, bool green, bool blue, bool bright)
{
#ifdef _INC_IOSTREAM
	cout.flush();
#endif

	cl_fc_param = 0;
	if ( red ) cl_fc_param |= FOREGROUND_RED;
	if ( green ) cl_fc_param |= FOREGROUND_GREEN;
	if ( blue ) cl_fc_param |= FOREGROUND_BLUE;
	if ( bright ) cl_fc_param |= FOREGROUND_INTENSITY;

	SetConsoleTextAttribute( GetStdHandle(STD_OUTPUT_HANDLE), cl_fc_param|cl_bc_param );
}
void text_background(bool red, bool green, bool blue, bool bright)
{
#ifdef _INC_IOSTREAM
	cout.flush();
#endif

	cl_bc_param = 0;
	if ( red ) cl_bc_param |= BACKGROUND_RED;
	if ( green ) cl_bc_param |= BACKGROUND_GREEN;
	if ( blue ) cl_bc_param |= BACKGROUND_BLUE;
	if ( bright ) cl_bc_param |= BACKGROUND_INTENSITY;

	SetConsoleTextAttribute( GetStdHandle(STD_OUTPUT_HANDLE), cl_fc_param|cl_bc_param );
}
void text_loc(int x, int y)
{
#ifdef _INC_IOSTREAM
	cout.flush();
#endif
	COORD cursor_coordinates;
	cursor_coordinates.X = x;
	cursor_coordinates.Y = y;
	SetConsoleCursorPosition( GetStdHandle(STD_OUTPUT_HANDLE), cursor_coordinates );
}

void console_title(const char* title)
{
	SetConsoleTitle(title);
}

#endif

Ok but after you use the colour, is it possible to tell the computer to switch back to normal colour?

Eg: To have a green title and normal coloured writing?

Paul

this is how to change colours:

void color(int color_num)
{
if( color_num == 1) // red
{
HANDLE hStdout;
hStdout = GetStdHandle(STD_OUTPUT_HANDLE);
SetConsoleTextAttribute(hStdout, FOREGROUND_RED);
}

if( color_num == 2) // light grey
{

HANDLE hStdout;
hStdout = GetStdHandle(STD_OUTPUT_HANDLE);
SetConsoleTextAttribute(hStdout, INTENSITY);

}
if( color_num == 3) // Blue
{

HANDLE hStdout;
hStdout = GetStdHandle(STD_OUTPUT_HANDLE);
SetConsoleTextAttribute(hStdout, FOREGROUND_BLUE);

}
if( color_num == 4) // Cyan
{

HANDLE hStdout;
hStdout = GetStdHandle(STD_OUTPUT_HANDLE);
SetConsoleTextAttribute(hStdout, FOREGROUND_INTENSITY | FOREGROUND_GREEN | FOREGROUND_BLUE);

}



}

then just pick a color for each text:

color(4);
cout<<"\n\n Cool colour\n"<<endl;
color(2);
cout<<" Now white colour"<<endl;

Sure, for example, if you use my small utility library above. Here is what you would do.

Code:

#include <iostream.h> // namespace ver works too
#include <util_lib_above.h>

void main()
{
    text_color(1, 0, 0, 1); // red green blue bright
    cout << "Hello Red World" << endl;
    text_color(0, 1, 0, 1); // red green blue bright
    cout << "Hello Green World" << endl;
}

You can achieve some cool effects in the console. Take this out for a test try.

Code:

#include <iostream.h> // namespace ver works too
#include <util_lib_above.h>
#include <stdlib.h>

void main()
{
    while ( 1 ) 
    {
        if ( rand() % 2 ) 
        {
	text_background(0, 0, 0, 0);
	text_color(0, 0, 0, 0);
        }
        else 
        {
	text_background(1, 1, 1, 1);
	text_color(1, 1, 1, 1);
        }

        text_loc( rand() % 80, rand() % 20 );
        cout << " ";
    }
}