问个问题
#include <windows.h>
#include <tchar.h>
#include <stdio.h>
int CDECL MessageBoxPrintf (TCHAR * szCaption, TCHAR * szFormat, ...)
{
TCHAR szBuffer [1024] ;
va_list pArgList ;
// The va_start macro (defined in STDARG.H) is usually equivalent to:
// pArgList = (char *) &szFormat + sizeof (szFormat) ;
va_start (pArgList, szFormat) ;
// The last argument to wvsprintf points to the arguments
_vsntprintf ( szBuffer, sizeof (szBuffer) / sizeof (TCHAR),
szFormat, pArgList) ;
// The va_end macro just zeroes out pArgList for no good reason
va_end (pArgList) ;
return MessageBox (NULL, szBuffer, szCaption, 0) ;
}
int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
PSTR szCmdLine, int iCmdShow)
{
int cxScreen, cyScreen ;
cxScreen = GetSystemMetrics (SM_CXSCREEN) ;
cyScreen = GetSystemMetrics (SM_CYSCREEN) ;
MessageBoxPrintf ( TEXT ("ScrnSize"),
TEXT ("The screen is %i pixels wide by %i pixels high."),
cxScreen, cyScreen) ;
return 0 ;
}
为什么要这样定义
TCHAR szBuffer [1024]
为什么不这样定义呢~
char szBuffer [1024]