1 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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4 <meta http-equiv="Content-Type" content="text/html; charset=Shift_JIS">
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5 <meta http-equiv="Content-Style-Type" content="text/css">
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6 <meta name="keywords" content="Simple Directmedia Layer SDL2.0">
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7 <link rel="top" href="index.html" title="
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8 <link rel="parent" href="CategoryIO.html" title="1
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9 <title>SDL_RWread</title>
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12 <a href="index.html">
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15 \83f
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17 <code>size_t SDL_RWread(struct SDL_RWops* context, void* ptr, size_t size, size_t maxnum)</code>
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19 <table border="1" summary="">
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20 <tr><td>context</td><td><a href="SDL_RWops.html">SDL_RWops</a>
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21 <tr><td>ptr</td><td>
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22 <tr><td>size</td><td>1
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23 <tr><td>maxnum</td><td>
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25 <h2>
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26 \93Ç
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27 <a href="SDL_GetError.html">SDL_GetError()</a>
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28 <h2>
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32 SDL_RWops *rw = SDL_RWFromFile("test.bin","r");
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34 extern Uint8 buf[256];
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35 SDL_RWread(rw, buf, sizeof (buf), 1);
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42 \83t
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45 char* file_read(const char* filename) {
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46 SDL_RWops *rw = SDL_RWFromFile(filename, "rb");
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47 if (rw == NULL) return NULL;
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49 Sint64 res_size = SDL_RWsize(rw);
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50 char* res = (char*)malloc(res_size + 1);
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52 Sint64 nb_read_total = 0, nb_read = 1;
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54 while (nb_read_total < res_size && nb_read != 0) {
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55 nb_read = SDL_RWread(rw, buf, 1, (res_size - nb_read_total));
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56 nb_read_total += nb_read;
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60 if (nb_read_total != res_size) {
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65 res[nb_read_total] = '\0';
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73 \82»
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74 \93Ç
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75 \83G
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78 <a href="SDL_RWread.html">SDL_RWread()</a>
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85 SDL_RWread(rwop, buffer, sizeof(Uint32), 10);
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88 32bit
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89 \82»
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95 SDL_RWread(rwop, buffer, sizeof(Uint64), 10);
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98 64bit
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99 \82»
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101 <h2>
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102 <a href="SDL_RWclose.html">SDL_RWclose</a><br>
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103 <a href="SDL_RWFromConstMem.html">SDL_RWFromConstMem</a><br>
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104 <a href="SDL_RWFromFile.html">SDL_RWFromFile</a><br>
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105 <a href="SDL_RWFromFP.html">SDL_RWFromFP</a><br>
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106 <a href="SDL_RWFromMem.html">SDL_RWFromMem</a><br>
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107 <a href="SDL_RWseek.html">SDL_RWseek</a><br>
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108 <a href="SDL_RWwrite.html">SDL_RWwrite</a><br>
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109 <h2>SDL Wiki
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110 <a href="https://wiki.libsdl.org/SDL_RWread">SDL_RWread - SDL Wiki</a>
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