How to do graphics in C

MS Visual C++? Ok try this

#include <windows.h>
#include <stdio.h>
#include <string.h>
#include <conio.h>

void SetAttribute(HANDLE hOutput, int x, int y, int z, unsigned short Attribute);
void PrintXY(HANDLE hOutput, int x, int y, char *string);


void main()
{
     HANDLE hOutput;

     hOutput = GetStdHandle(STD_OUTPUT_HANDLE);

     SetAttribute(hOutput, 1, 1, strlen("Hello World"), FOREGROUND_RED);
     PrintXY(hOutput, 0, 0, "Hello World");
}



// set the color of text
void SetAttribute(HANDLE hOutput, int x, int y, int z, unsigned short Attribute)
{
     DWORD cWritten;
     COORD coord;

     for ( int i=0; i<z; i++)
     {
          coord.X = x + i;
          coord.Y = y;
          WriteConsoleOutputAttribute(
               hOutput,    // screen buffer handle
               &Attribute, // pointer to source string
               (DWORD)1,   // length of string
               coord,      // first cell to write to
               &cWritten); // actual number written
     }
}

// print string literally onto screen at specified position
void PrintXY(HANDLE hOutput, int x, int y, char *string)
{
     DWORD cWritten;
     COORD coord;

     coord.X = x;
     coord.Y = y;

     WriteConsoleOutputCharacter(
          hOutput,         // screen buffer handle
          string,          // pointer to source string
          lstrlen(string), // length of string
          coord,           // first cell to write to
          &cWritten);      // actual number written
}

hongjun

The last parameter of the SetAttribute function can be of any of the below combinations.

FOREGROUND_RED
FOREGROUND_GREEN
FOREGROUND_BLUE
FOREGROUND_INTENSITY
BACKGROUND_RED
BACKGROUND_GREEN
BACKGROUND_BLUE
BACKGROUND_INTENSITY

To get white foreground colour and red background colour, use this combination.
SetAttribute(hOutput, 1, 1, strlen("Hello World"), FOREGROUND_RED|FOREGROUND_GREEN|FOREGROUND_BLUE|BACKGROUND_RED);

hongjun

Any progress?

hongjun

Ran it, not sure about couple things but it does the job.
Compiler doesn't like the way you declare 'int i' then tried to use it in 'for' loop.
Double points if you can tell me how to change entire background color.

Thanks, didnt realise they put an upper limit on points.

Haha you could always create a question just for me if you wish to give more :)

hongjun

Dont worry got lots of questions
hehehe