GRASS GIS 7 Programmer's Manual  7.9.dev(2021)-e5379bbd7
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read_xid.c
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1 #include <grass/glocale.h>
2 
3 #include "cairodriver.h"
4 
5 void cairo_read_xid(void)
6 {
7 #if CAIRO_HAS_XLIB_XRENDER_SURFACE
8  FILE *fp;
9  char buf[64];
10  unsigned long xid;
11 
12  fp = fopen(ca.file_name, "r");
13  if (!fp)
14  G_fatal_error(_("Unable to open input file <%s>"), ca.file_name);
15 
16  if (!fgets(buf, sizeof(buf), fp))
17  G_fatal_error(_("Unable to read input file <%s>"), ca.file_name);
18 
19  if (sscanf(buf, "%lx", &xid) != 1)
20  G_fatal_error(_("Unable to parse input file <%s>"), ca.file_name);
21 
22  fclose(fp);
23 
24  ca.win = (Drawable) xid;
25 #endif
26 }
27 
G_fatal_error
void void void void G_fatal_error(const char *,...) __attribute__((format(printf
cairo_read_xid
void cairo_read_xid(void)
Definition: read_xid.c:5
ca
struct cairo_state ca
Definition: cairodriver/graph.c:42
cairo_state::file_name
char * file_name
Definition: cairodriver.h:65
cairodriver.h
GRASS cairo display driver - header file.
_
#define _(str)
Definition: glocale.h:10