回答編集履歴
3
tcharの扱いについてちょっとミスがあったため修正
test
CHANGED
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@@ -6,7 +6,7 @@
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6
6
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7
7
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TCHAR buf[80];
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8
8
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9
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-
_tcsftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", bar);
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9
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+
_tcsftime(buf, sizeof(buf)/sizeof(TCHAR), "%Y-%m-%d %H:%M:%S", bar);
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10
10
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11
11
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```
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12
12
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@@ -48,11 +48,11 @@
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48
48
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49
49
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TCHAR buf[80];
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50
50
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51
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-
_tcsftime(buf, sizeof(buf), _T("%Y-%m-%d %H:%M:%S"), bar);
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51
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+
_tcsftime(buf, sizeof(buf)/sizeof(TCHAR), _T("%Y-%m-%d %H:%M:%S"), bar);
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52
52
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53
53
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54
54
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55
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-
draw_text(buf, sizeof(buf));
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55
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+
draw_text(buf, sizeof(buf)/sizeof(TCHAR));
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56
56
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57
57
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}
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58
58
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2
追記
test
CHANGED
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@@ -9,3 +9,63 @@
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9
9
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_tcsftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", bar);
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10
10
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11
11
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```
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12
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+
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13
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14
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15
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---
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16
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17
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18
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19
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```C++
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20
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21
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#include <windows.h>
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22
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23
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#include <tchar.h>
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24
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25
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#include <ctime>
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26
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27
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28
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29
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void draw_text(TCHAR str[], size_t len){
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30
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31
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HWND desktop = GetDesktopWindow();
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32
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33
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HDC hdc = GetWindowDC(desktop);
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34
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35
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TextOut(hdc, 0,0, str, _tcsnlen(str, len));
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36
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37
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UpdateWindow(desktop);
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38
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39
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}
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40
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41
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42
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43
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void draw_asdf(time_t x){
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44
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45
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time_t foo = 946728000 + x;
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46
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47
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tm *bar = gmtime(&foo);
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48
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49
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TCHAR buf[80];
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50
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51
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_tcsftime(buf, sizeof(buf), _T("%Y-%m-%d %H:%M:%S"), bar);
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52
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53
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54
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55
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draw_text(buf, sizeof(buf));
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56
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57
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}
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58
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59
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60
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61
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int main(){
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62
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63
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draw_asdf(100);
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64
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65
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}
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66
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67
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```
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68
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69
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70
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71
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+
`gcc version 8.2.0 (Rev3, Built by MSYS2 project)`にて動作確認しました。
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1
修正
test
CHANGED
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@@ -4,7 +4,7 @@
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4
4
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5
5
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```c
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6
6
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7
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-
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7
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+
TCHAR buf[80];
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8
8
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9
9
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_tcsftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", bar);
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10
10
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