Многие используют функцию wsprintf(), но не все знают, что в справке msdn есть 2 ошибки, которые могут в один прекрасный день убить ваш софт.

Код (ASM):

1.  
2. ; wsprintf( // Фоpматиpует и записывает в буфеp последовательность символов
3. ;DWORD  lpOut, // Буфеp для пpиема отфоpматиpованных символов
4. ;DWORD lpFmt, // Стpока упpавления фоpматом
5. ; ... ); // Массив аpгументов для стpоки упpавления фоpматом
6. ;==============================================================================
7. ; В случае успешного завеpшения - число символов в lpOut,
8. ; не считая 0 , в пpотивном случае - меньше, чем длина lpFmt.
9. ;==============================================================================
10. .386 ;
11. .model flat,stdcall ;
12. option casemap:none ;
13. ;==============================================================================
14. include c:\masm32\include\windows.inc
15. include c:\masm32\include\kernel32.inc
16. include c:\masm32\include\user32.inc
17. includelib c:\masm32\lib\kernel32.lib
18. includelib c:\masm32\lib\user32.lib
19. ;==============================================================================
20. .data ;
21. ;==============================================================================
22. lpOut db 255 dup(0) ;Здесь будет храниться результат (lpOut < 1024)!
23. Message db "Result:",0 ;Заголовок MessageBox
24. Unicode db 55h,0,6Eh,0,69h,0,63h,0,6Fh,0,64h,0,65h,0,0,0 ;строка в Unicode
25. ;==============================================================================
26. ; 1. Простейшие форматы lpFmt = %type
27. ;==============================================================================
28. lpFmtc db "%c",0 ;Single character
29. lpFmtC db "%C",0 ;Single character
30. lpFmtd db "%d",0 ;Signed decimal integer
31. lpFmthc db "%hc",0 ;Single character
32. lpFmthd db "%hd",0 ;Signed short integer
33. lpFmths db "%hs",0 ;String
34. lpFmthu db "%hu",0 ;Unsigned short integer
35. lpFmti db "%i",0 ;Signed decimal integer
36. lpFmtlc db "%lc",0 ;Single character
37. lpFmtld db "%ld",0 ;Long signed integer
38. lpFmtli db "%li",0 ;Long signed integer
39. lpFmtls db "%ls",0 ;String
40. lpFmtlu db "%lu",0 ;Long unsigned integer
41. lpFmtlx db "%lx",0 ;Long unsigned hexadecimal integer
42. lpFmtp db "%p",0 ;Win2000/XP hexadecimal pointer
43. lpFmts db "%s",0 ;String
44. lpFmtS db "%S",0 ;String
45. lpFmtu db "%u",0 ;Unsigned integer
46. lpFmtx db "%x",0 ;Unsigned hexadecimal integer
47. ;==============================================================================
48. ; 2. Сложные форматы lpFmt = %[-][#][0][width][.precision]type
49. ;==============================================================================
50. _lpFmtc db "char: %c",0
51. _lpFmtC db "%C is char",0
52. _lpFmtd db "4: %.4d",0
53. _lpFmthc db "%hc : %04Xh",0
54. _lpFmthd db "%hd is int.",0
55. _lpFmths db "%-45hs%8d",0
56. _lpFmthu db "-%.2hu",0
57. _lpFmti db "(%i) = %i",0
58. _lpFmtlc db "%lc*%lc",0
59. _lpFmtld db "%ld kb/s",0
60. _lpFmtli db "cool! , %li",0
61. _lpFmtls db "len 4: %.4ls",0
62. _lpFmtlu db "<%lu> MHz",0
63. _lpFmtlx db "hex: %#08lx",0
64. _lpFmtp db "pointer: %p",0
65. _lpFmts db "string: %s ,len: %i",0
66. _lpFmtS db "%S = %u bytes ...",0
67. _lpFmtu db "int: %u.%u.%u.%u",0
68. _lpFmtx1 db "hex: %04x-%04x-%04x-%04x",0
69. _lpFmtx2 db "hex: #%.2lX%.2lX%.2lX",0
70. _lpFmtx3 db "eax=%0.8X ebx=%0.8X ecx=%0.8X edx=%0.8X esi=%0.8X",13,10, \
71.                 "edi=%0.8X ebp=%0.8X esp=%0.8X",0
72. ;==============================================================================
73. ; 3. Макрос
74. ;==============================================================================
75. lpFmt macro Text ;
76.     local szText ;
77. .data ;
78. szText byte Text,0 ;
79. .code ;
80. exitm <offset szText>   ;
81. endm ;
82. ;==============================================================================
83. .code
84. start:
85. ;==============================================================================
86. ; 1. Примеры использования простейших форматов lpFmt
87. ;==============================================================================
88. invoke wsprintf,addr lpOut,addr lpFmtc ,65 ;
89. call result ; "A"
90. invoke wsprintf,addr lpOut,addr lpFmtC ,"a" ;
91. call result ; "a"
92. invoke wsprintf,addr lpOut,addr lpFmtd ,1 ;
93. call result ; "1"
94. invoke wsprintf,addr lpOut,addr lpFmthc,65 ;
95. call result ; "A"
96. invoke wsprintf,addr lpOut,addr lpFmthd,1 ;
97. call result ; "1"
98. invoke wsprintf,addr lpOut,addr lpFmths,addr Unicode ;
99. call result ; "U"
100. invoke wsprintf,addr lpOut,addr lpFmthu,1 ;
101. call result ; "1"
102. invoke wsprintf,addr lpOut,addr lpFmti ,1 ;
103. call result ; "1"
104. invoke wsprintf,addr lpOut,addr lpFmtlc,65 ;
105. call result ; "A"
106. invoke wsprintf,addr lpOut,addr lpFmtld,5872h ;
107. call result ; "22642"
108. invoke wsprintf,addr lpOut,addr lpFmtli,1 ;
109. call result ; "1"
110. invoke wsprintf,addr lpOut,addr lpFmtls,addr Unicode ;
111. call result ; "Unicode"
112. invoke wsprintf,addr lpOut,addr lpFmtlu,65 ;
113. call result ; "65"
114. invoke wsprintf,addr lpOut,addr lpFmtlx,01A2Bh ;
115. call result ; "1a2b"
116. invoke wsprintf,addr lpOut,addr lpFmtp ,65h ;
117. call result ; "00000065"
118. invoke wsprintf,addr lpOut,addr lpFmts ,addr Message ;
119. call result ; "Result:"
120. invoke wsprintf,addr lpOut,addr lpFmtS ,addr Unicode ;
121. call result ; "Unicode"
122. invoke wsprintf,addr lpOut,addr lpFmtu ,100 ;
123. call result ; "100"
124. invoke wsprintf,addr lpOut,addr lpFmtx ,01A2Bh ;
125. call result ; "1a2b"
126. ;==============================================================================
127. ; 2. Примеры использования сложных форматов lpFmt
128. ;==============================================================================
129. invoke wsprintf,addr lpOut,addr _lpFmtc ,65
130. call result
131. invoke wsprintf,addr lpOut,addr _lpFmtC ,"a"
132. call result
133. invoke wsprintf,addr lpOut,addr _lpFmtd ,1
134. call result
135. invoke wsprintf,addr lpOut,addr _lpFmthc ,65,65
136. call result
137. invoke wsprintf,addr lpOut,addr _lpFmthd ,1
138. call result
139. invoke wsprintf,addr lpOut,addr _lpFmths ,addr Unicode,571
140. call result
141. invoke wsprintf,addr lpOut,addr _lpFmthu ,1
142. call result
143. invoke wsprintf,addr lpOut,addr _lpFmti ,1,1
144. call result
145. invoke wsprintf,addr lpOut,addr _lpFmtlc ,65,56
146. call result
147. invoke wsprintf,addr lpOut,addr _lpFmtld ,5872h
148. call result
149. invoke wsprintf,addr lpOut,addr _lpFmtli ,1
150. call result
151. invoke wsprintf,addr lpOut,addr _lpFmtls ,addr Unicode
152. call result
153. invoke wsprintf,addr lpOut,addr _lpFmtlu ,666
154. call result
155. invoke wsprintf,addr lpOut,addr _lpFmtlx ,01A2Bh
156. call result
157. invoke wsprintf,addr lpOut,addr _lpFmtp ,65h
158. call result
159. invoke wsprintf,addr lpOut,addr _lpFmts ,addr Message,sizeof Message-1
160. call result
161. invoke wsprintf,addr lpOut,addr _lpFmtS ,addr Unicode,sizeof Unicode
162. call result
163. invoke wsprintf,addr lpOut,addr _lpFmtu ,100
164. call result
165. invoke wsprintf,addr lpOut,addr _lpFmtx1 ,01A2Bh
166. call result
167. invoke wsprintf,addr lpOut,addr _lpFmtx2 ,01A2Bh
168. call result
169. invoke wsprintf,addr lpOut,addr _lpFmtx3 ,eax,ebx,ecx,edx,esi,edi,ebp,esp
170. call result
171. ;==============================================================================
172. ; 3. Пример c использованием макроса
173. ;==============================================================================
174. invoke wsprintf,addr lpOut,lpFmt("%ld kb/s"),5872h
175. call result
176. invoke wsprintf,addr lpOut,lpFmt("Alert, sindrom vachtera detected, %li"),1
177. call result
178. ;==============================================================================
179. invoke ExitProcess,0
180. ;==============================================================================
181. ; Вывод результата
182. ;==============================================================================
183. result proc
184. invoke MessageBox,0,addr lpOut,addr Message,MB_OK
185. ret
186. result endp
187. ;==============================================================================
188. end start