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1 | % ----------------------------------------------------------------------------- |
2 | % wxInputStream | |
3 | % ----------------------------------------------------------------------------- | |
4 | \section{\class{wxInputStream}}\label{wxinputstream} | |
5 | ||
6 | \wxheading{Derived from} | |
7 | ||
8 | \helpref{wxStreamBase}{wxstreambase} | |
9 | ||
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10 | \wxheading{Include files} |
11 | ||
12 | <wx/stream.h> | |
13 | ||
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14 | % ----------- |
15 | % ctor & dtor | |
16 | % ----------- | |
17 | \membersection{wxInputStream::wxInputStream} | |
18 | ||
19 | \func{}{wxInputStream}{\void} | |
20 | ||
21 | Creates a dummy input stream. | |
22 | ||
e2a6f233 JS |
23 | \membersection{wxInputStream::\destruct{wxInputStream}} |
24 | ||
25 | \func{}{\destruct{wxInputStream}}{\void} | |
26 | ||
27 | Destructor. | |
28 | ||
e2a6f233 JS |
29 | \membersection{wxInputStream::GetC} |
30 | ||
31 | \func{char}{GetC}{\void} | |
32 | ||
33 | Returns the first character in the input queue and removes it. | |
34 | ||
39b91eca | 35 | \membersection{wxInputStream::LastRead}\label{wxinputstreamlastread} |
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36 | |
37 | \constfunc{size\_t}{LastRead}{\void} | |
38 | ||
39 | Returns the last number of bytes read. | |
40 | ||
41 | \membersection{wxInputStream::Peek} | |
42 | ||
43 | \func{char}{Peek}{\void} | |
44 | ||
45 | Returns the first character in the input queue without removing it. | |
46 | ||
e2a6f233 JS |
47 | \membersection{wxInputStream::Read} |
48 | ||
40b480c3 | 49 | \func{wxInputStream\&}{Read}{\param{void *}{buffer}, \param{size\_t}{ size}} |
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50 | |
51 | Reads the specified amount of bytes and stores the data in \it{buffer}. | |
52 | ||
da3aea64 GL |
53 | \wxheading{Warning} |
54 | ||
55 | The buffer absolutely needs to have at least the specified size. | |
56 | ||
57 | \wxheading{Return value} | |
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58 | |
59 | This function returns a reference on the current object, so the user can test | |
60 | any states of the stream right away. | |
61 | ||
294e9a7a | 62 | \func{wxInputStream\&}{Read}{\param{wxOutputStream\&}{ stream\_out}} |
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63 | |
64 | Reads data from the input queue and stores it in the specified output stream. | |
65 | The data is read until an error is raised by one of the two streams. | |
66 | ||
da3aea64 GL |
67 | \wxheading{Return value} |
68 | ||
69 | This function returns a reference on the current object, so the user can test | |
70 | any states of the stream right away. | |
71 | ||
e2a6f233 JS |
72 | \membersection{wxInputStream::SeekI} |
73 | ||
40b480c3 | 74 | \func{off\_t}{SeekI}{\param{off\_t}{ pos}, \param{wxSeekMode}{ mode = wxFromStart}} |
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75 | |
76 | Changes the stream current position. | |
77 | ||
78 | \membersection{wxInputStream::TellI} | |
79 | ||
40b480c3 | 80 | \constfunc{off\_t}{TellI}{\void} |
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81 | |
82 | Returns the current stream position. | |
83 | ||
c7d9131a GL |
84 | \membersection{wxInputStream::Ungetch}\label{wxinputstream_ungetch} |
85 | ||
86 | \func{size\_t}{Ungetch}{\param{const char*}{ buffer}, \param{size\_t}{ size}} | |
87 | ||
88 | This function is only useful in \it{read} mode. It is the manager of the "Write-Back" | |
89 | buffer. This buffer acts like a temporary buffer where datas which has to be | |
90 | read during the next read IO call are put. This is useful when you get a big | |
91 | block of data which you didn't want to read: you can replace them at the top | |
92 | of the input queue by this way. | |
93 | ||
94 | \wxheading{Return value} | |
95 | ||
96 | Returns the amount of bytes saved in the Write-Back buffer. | |
97 | ||
98 | \func{bool}{Ungetch}{\param{char }{c}} | |
99 | ||
100 | This function acts like the previous one except that it takes only one | |
101 | character: it is sometimes shorter to use than the generic function. | |
102 |