Function:s2qch
From S2PLOT
(Difference between revisions)
| Revision as of 02:27, 23 November 2007 S2plot admin (Talk | contribs) ← Previous diff |
Revision as of 02:41, 27 November 2007 S2plot admin (Talk | contribs) Next diff → |
||
| Line 5: | Line 5: | ||
| <code><pre> | <code><pre> | ||
| - | int s2qch(void); | + | float s2qch(void); |
| </pre></code> | </pre></code> | ||
| Line 30: | Line 30: | ||
| } | } | ||
| - | int qch = s2qch(); /* Query character height */ | + | float qch = s2qch(); /* Query character height */ |
| char string[32]; | char string[32]; | ||
| - | sprintf(string,"Height = %d",qch); /* Write to string */ | + | sprintf(string,"Height = %.2f",qch); /* Write to string */ |
| - | s2textxy(0,0,0,string); /* Display text */ | + | s2textxy(-1,0,0,string); /* Display text */ |
| lkc = *kc; /* Update count */ | lkc = *kc; /* Update count */ | ||
Revision as of 02:41, 27 November 2007
s2qch
Query the character height.
Prototype
float s2qch(void);
Description
Query the characer height.
See Also
| s2sch | Set the character height |
Code Example
#include <stdio.h>
#include <stdlib.h>
#include "s2plot.h"
void cb(double *t, int *kc)
{
static int lkc = 0; /* Count of key presses */
if (lkc != *kc) { /* Space bar pressed? */
s2sch(drand48()*5+1); /* Choose random height */
}
float qch = s2qch(); /* Query character height */
char string[32];
sprintf(string,"Height = %.2f",qch); /* Write to string */
s2textxy(-1,0,0,string); /* Display text */
lkc = *kc; /* Update count */
}
int main(int argc, char *argv[])
{
fprintf(stderr,"Press the <spacebar> to change character height");
s2opend("/s2mono", argc, argv); /* Open in mono mode */
s2swin(-1.,1., -1.,1., -1.,1.); /* Set the window coordinates */
s2box("BCDET",0,0,"BCDET",0,0,"BCDET",0,0); /* Draw coordinate box */
cs2scb(cb); /* Install dynamic callback */
s2show(1); /* Open the s2plot window */
return 1;
}
Back to S2PLOT function list.
