ReactOS  0.4.15-dev-1201-gb2cf5a4
_reactos_strsafe_wrapper.c File Reference
#include <windef.h>
#include <strsafe.h>
Include dependency graph for _reactos_strsafe_wrapper.c:

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Functions

int _vsnprintf_s (char *buffer, size_t sizeOfBuffer, size_t count, const char *format, va_list argptr)
 

Function Documentation

◆ _vsnprintf_s()

int _vsnprintf_s ( char buffer,
size_t  sizeOfBuffer,
size_t  count,
const char format,
va_list  argptr 
)

Definition at line 25 of file _reactos_strsafe_wrapper.c.

26 {
27  size_t cchRemaining;
28 
29  HRESULT ret = StringCchVPrintfEx(buffer, sizeOfBuffer, NULL, &cchRemaining, 0, format, argptr);
30 
31  // EXAMPLE //////////////////////////
32  // -------- > Size of provided buffer in chars (8).
33  // ABC0____ > Buffer contents after StringCchVPrintfEx gets called.
34  // --- > What we actually need to return (3).
35  // ----- > Remaining chars in buffer, including post string NULL, returned by StringCchVPrintfEx (5).
36 
37  /* _vsnprintf_s returns the number of characters written, not including
38  the terminating null, or a negative value if an output error occurs. */
39 
40  switch (ret)
41  {
42  case S_OK:
43  return (sizeOfBuffer - cchRemaining);
44 
47  default:
48  return -1;
49  }
50 }
GLuint buffer
Definition: glext.h:5915
#define StringCchVPrintfEx
Definition: strsafe.h:647
#define STRSAFE_E_INSUFFICIENT_BUFFER
Definition: strsafe.h:103
GLint GLint GLsizei GLsizei GLsizei GLint GLenum format
Definition: gl.h:1546
#define STRSAFE_E_INVALID_PARAMETER
Definition: strsafe.h:104
smooth NULL
Definition: ftsmooth.c:416
LONG HRESULT
Definition: typedefs.h:79
int ret
#define S_OK
Definition: intsafe.h:51
static size_t sizeOfBuffer
Definition: printf.c:66