#include <windows.h>
#include <isc/win32os.h>
static BOOL bInit = FALSE;
static OSVERSIONINFOEX osVer;
static void
initialize_action(void) {
BOOL bSuccess;
if (bInit)
return;
osVer.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
bSuccess = GetVersionEx((OSVERSIONINFO *) &osVer);
if(!bSuccess) {
osVer.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
bSuccess = GetVersionEx((OSVERSIONINFO *) &osVer);
}
bInit = TRUE;
}
unsigned int
isc_win32os_majorversion(void) {
initialize_action();
return ((unsigned int)osVer.dwMajorVersion);
}
unsigned int
isc_win32os_minorversion(void) {
initialize_action();
return ((unsigned int)osVer.dwMinorVersion);
}
unsigned int
isc_win32os_servicepackmajor(void) {
initialize_action();
return ((unsigned int)osVer.wServicePackMajor);
}
unsigned int
isc_win32os_servicepackminor(void) {
initialize_action();
return ((unsigned int)osVer.wServicePackMinor);
}
int
isc_win32os_versioncheck(unsigned int major, unsigned int minor,
unsigned int spmajor, unsigned int spminor) {
initialize_action();
if (major < isc_win32os_majorversion())
return (1);
if (major > isc_win32os_majorversion())
return (-1);
if (minor < isc_win32os_minorversion())
return (1);
if (minor > isc_win32os_minorversion())
return (-1);
if (spmajor < isc_win32os_servicepackmajor())
return (1);
if (spmajor > isc_win32os_servicepackmajor())
return (-1);
if (spminor < isc_win32os_servicepackminor())
return (1);
if (spminor > isc_win32os_servicepackminor())
return (-1);
return (0);
}