swprintf/wsprintf

本文解析了wsprintf函数的特点,强调其为Windows API宏而非C/C++标准库函数,并澄清了其与sprintf及swprintf的区别。

摘要生成于 C知道 ,由 DeepSeek-R1 满血版支持, 前往体验 >

sprintf 单字节版本的C/C++库函数

swprintf 宽字节版本的C/C++库函数

而我们上面的wsprintf和上面两个函数看起来很相似,大家不要搞混淆了啊,wsprintf最前面的w不是代表Wide,宽字节的意思了,而是Windows的W,代表是windows的API函数了,其实它是一个宏这在上面已经说过了,真正的API函数其实是wsprintfA和wsprintfW这两个,在不严格的情况下通常我们也说wsprintf是函数。

PS D:\HK\Git\Soft\Make\MakeTest\MakeTest> make gcc -g -Wall -c main.c -o build/main.o main.c: In function 'GetCurrentTimeString': main.c:16:14: error: passing argument 1 of 'wsprintfA' from incompatible pointer type [-Wincompatible-pointer-types] 16 | wsprintf(buffer,"%02d:%02d:%02d",st.wHour,st.wMinute,st.wSecond); | ^~~~~~ | | | LPWSTR {aka short unsigned int *} In file included from C:/Program Files/C/x86_64-14.2.0-release-win32-seh-ucrt-rt_v12-rev1/mingw64/x86_64-w64-mingw32/include/windows.h:72, from main.c:4: C:/Program Files/C/x86_64-14.2.0-release-win32-seh-ucrt-rt_v12-rev1/mingw64/x86_64-w64-mingw32/include/winuser.h:170:36: note: expected 'LPSTR' {aka 'char *'} but argument is of type 'LPWSTR' {aka 'short unsigned int *'} 170 | WINUSERAPI int WINAPIV wsprintfA(LPSTR,LPCSTR,...); | ^~~~~ main.c: In function 'WndProc': main.c:36:31: error: passing argument 4 of 'TextOutA' from incompatible pointer type [-Wincompatible-pointer-types] 36 | TextOut(hdc,10,10,timeStr,wcslen(timeStr)); | ^~~~~~~ | | | WCHAR * {aka short unsigned int *} In file included from C:/Program Files/C/x86_64-14.2.0-release-win32-seh-ucrt-rt_v12-rev1/mingw64/x86_64-w64-mingw32/include/windows.h:71: C:/Program Files/C/x86_64-14.2.0-release-win32-seh-ucrt-rt_v12-rev1/mingw64/x86_64-w64-mingw32/include/wingdi.h:3458:64: note: expected 'LPCSTR' {aka 'const char *'} but argument is of type 'WCHAR *' {aka 'short unsigned int *'} 3458 | WINGDIAPI WINBOOL WINAPI TextOutA(HDC hdc,int x,int y,LPCSTR lpString,int c); | ~~~~~~~^~~~~~~~ make: *** [Makefile:50: main.o] Error 1
03-15
评论
添加红包

请填写红包祝福语或标题

红包个数最小为10个

红包金额最低5元

当前余额3.43前往充值 >
需支付:10.00
成就一亿技术人!
领取后你会自动成为博主和红包主的粉丝 规则
hope_wisdom
发出的红包
实付
使用余额支付
点击重新获取
扫码支付
钱包余额 0

抵扣说明:

1.余额是钱包充值的虚拟货币,按照1:1的比例进行支付金额的抵扣。
2.余额无法直接购买下载,可以购买VIP、付费专栏及课程。

余额充值