vs编译错误
error C2665: 'swprintf' : none of the 2 overloads could convert all the argument types

代码是：
TCHAR tcsCom[10];

swprintf( tcsCom, _T("COM%d"), 1);


[解决办法]
改用：_stprintf

_stprintf( tcsCom, _T("COM%d"), 1);
[解决办法]
记得：
#include <tchar.h>
[解决办法]
When you use sprintf(), the first argument is a buffer that you're printing to. The same is the case for swprintf(), except the buffer is of wchar_t instead of char.

wchar_t buffer[SOME_NUMBER];
swprintf(buffer, "format string", args);

意思说你那个tcsCom应该是wchar_t型

参看
http://www.gamedev.net/community/forums/topic.asp?topic_id=473673&whichpage=1&#3107710



[解决办法]
原因是重载的函数 每个参数都不符合 你提供的
你可以F12去看一下申明
[解决办法]

C/C++ code

#include <stdio.h>int main( void ){   char  buffer[200], s[] = "computer", c = 'l';   int   i = 35, j;   float fp = 1.7320534f;   // Format and print various data:    j  = sprintf( buffer,     "   String:    %s\n", s ); // C4996   j += sprintf( buffer + j, "   Character: %c\n", c ); // C4996   j += sprintf( buffer + j, "   Integer:   %d\n", i ); // C4996   j += sprintf( buffer + j, "   Real:      %f\n", fp );// C4996   // Note: sprintf is deprecated; consider using sprintf_s instead   printf( "Output:\n%s\ncharacter count = %d\n", buffer, j );}