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Fade text

Posted on 1998-02-07
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Last Modified: 2010-04-02
How do you fade a text string in c.
I use Turbo c for dos.
I need source
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Question by:hh
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5 Comments
 
LVL 2

Accepted Solution

by:
Ready4Dis earned 300 total points
ID: 1257186
This is only for fading the color white out. If you need more, tell me, and I will do it.
Ok... here is the source:

#include <conio.h>
#include <stdio.h>
#include <dos.h>

main ()
{
      int i;
      clrscr();
      printf("Hello");  //here is the text.
      for (i=45;i>0;i--)
      {
            outportb(0x3c8,7);
            outportb(0x3c9,i);
            outportb(0x3c9,i);
            outportb(0x3c9,i);
            delay(100);  //Change for faster/slower fade
      }
            //Resets port...
            outportb(0x3c8,7);
            outportb(0x3c9,45);
            outportb(0x3c9,45);
            outportb(0x3c9,45);
return 0;
}
0
 

Author Comment

by:hh
ID: 1257187
Here is the source to fade out of white, into red, then out of red, and back to white.  Look for comments to changge colors.

#include <conio.h>
#include <stdio.h>
#include <dos.h>

main ()
{
      int i;
      clrscr();
      printf("Hello");  //here is the text.
      for (i=45;i>0;i--)
      {
            outportb(0x3c8,7);
            outportb(0x3c9,i);  //Red
            outportb(0x3c9,i);  //Green
            outportb(0x3c9,i);  //Blue
            delay(100);  //Change for faster/slower fade
      }
      for (i=0;i<45;i++)
      {
            outportb(0x3c8,7);
            outportb(0x3c9,i);  //Fade into Red.
            outportb(0x3c9,0);
            outportb(0x3c9,0);
            delay(100);  //Change for faster/slower fade
      }
      for (i=45;i>0;i--)
      {
            outportb(0x3c8,7);
            outportb(0x3c9,i);  //Fade out of Red.
            outportb(0x3c9,0);
            outportb(0x3c9,0);
            delay(100);  //Change for faster/slower fade
      }
            //Resets port...
            outportb(0x3c8,7);
            outportb(0x3c9,45);
            outportb(0x3c9,45);
            outportb(0x3c9,45);
return 0;
}
0
 
LVL 2

Expert Comment

by:Ready4Dis
ID: 1257188
How do you flash the whole screen
0
 

Author Comment

by:hh
ID: 1257189
#include <conio.h>
#include <stdio.h>
#include <dos.h>
main ()
{
int i;
clrscr();
for (i=0;i<45;i++)
{
outportb(0x3c8,0);
outportb(0x3c9,i); //Red
outportb(0x3c9,i); //Green
outportb(0x3c9,i); //Blue
delay(100); //Change for faster/slower fade
}
for (i=45;i>0;i--)
{
outportb(0x3c8,0);
outportb(0x3c9,i);
outportb(0x3c9,i);
outportb(0x3c9,i);
delay(100); //Change for faster/slower fade
}
return 0;
}
0
 
LVL 2

Expert Comment

by:Ready4Dis
ID: 1257190
//Flash whole screen
#include <conio.h>
#include <stdio.h>

main ()
{
  outportb(0x3c8,0);
  outportb(0x3c9,63); //Red
  outportb(0x3c9,0); //Green
  outportb(0x3c9,0); //Blue
  getch();  //Wait for keypress
  outportb(0x3c8,0);
  outportb(0x3c9,0); //Red
  outportb(0x3c9,0); //Green
  outportb(0x3c9,0); //Blue
  return 0;
}
0

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