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1 | % ----------------------------------------------------------------------------- | |
2 | % wxOutputStream | |
3 | % ----------------------------------------------------------------------------- | |
4 | \section{\class{wxOutputStream}}\label{wxoutputstream} | |
5 | ||
6 | wxOutputStream is an abstract base class which may not be used directly. | |
7 | ||
8 | \wxheading{Derived from} | |
9 | ||
10 | \helpref{wxStreamBase}{wxstreambase} | |
11 | ||
12 | \wxheading{Include files} | |
13 | ||
14 | <wx/stream.h> | |
15 | ||
16 | \latexignore{\rtfignore{\wxheading{Members}}} | |
17 | ||
18 | % ----------- | |
19 | % ctor & dtor | |
20 | % ----------- | |
21 | ||
22 | \membersection{wxOutputStream::wxOutputStream}\label{wxoutputstreamctor} | |
23 | ||
24 | \func{}{wxOutputStream}{\void} | |
25 | ||
26 | Creates a dummy wxOutputStream object. | |
27 | ||
28 | ||
29 | \membersection{wxOutputStream::\destruct{wxOutputStream}}\label{wxoutputstreamdtor} | |
30 | ||
31 | \func{}{\destruct{wxOutputStream}}{\void} | |
32 | ||
33 | Destructor. | |
34 | ||
35 | ||
36 | \membersection{wxOutputStream::Close}\label{wxoutputstreamclose} | |
37 | ||
38 | \func{bool}{Close}{\void} | |
39 | ||
40 | Closes the stream, returning {\tt false} if an error occurs. The | |
41 | stream is closed implicitly in the destructor if Close() is not | |
42 | called explicitly. | |
43 | ||
44 | If this stream wraps another stream or some other resource such | |
45 | as a file, then the underlying resource is closed too if it is owned | |
46 | by this stream, or left open otherwise. | |
47 | ||
48 | ||
49 | \membersection{wxOutputStream::LastWrite}\label{wxoutputstreamlastwrite} | |
50 | ||
51 | \constfunc{size\_t}{LastWrite}{\void} | |
52 | ||
53 | Returns the number of bytes written during the last | |
54 | \helpref{Write()}{wxoutputstreamwrite}. It may return $0$ even if there is no | |
55 | error on the stream if it is only temporarily impossible to write to it. | |
56 | ||
57 | ||
58 | \membersection{wxOutputStream::PutC}\label{wxoutputstreamputc} | |
59 | ||
60 | \func{void}{PutC}{\param{char}{ c}} | |
61 | ||
62 | Puts the specified character in the output queue and increments the | |
63 | stream position. | |
64 | ||
65 | ||
66 | \membersection{wxOutputStream::SeekO}\label{wxoutputstreamseeko} | |
67 | ||
68 | \func{off\_t}{SeekO}{\param{off\_t}{ pos}, \param{wxSeekMode}{ mode = wxFromStart}} | |
69 | ||
70 | Changes the stream current position. | |
71 | ||
72 | \wxheading{Parameters} | |
73 | ||
74 | \docparam{pos}{Offset to seek to.} | |
75 | ||
76 | \docparam{mode}{One of {\bf wxFromStart}, {\bf wxFromEnd}, {\bf wxFromCurrent}.} | |
77 | ||
78 | \wxheading{Return value} | |
79 | ||
80 | The new stream position or wxInvalidOffset on error. | |
81 | ||
82 | ||
83 | \membersection{wxOutputStream::TellO}\label{wxoutputstreamtello} | |
84 | ||
85 | \constfunc{off\_t}{TellO}{\void} | |
86 | ||
87 | Returns the current stream position. | |
88 | ||
89 | ||
90 | \membersection{wxOutputStream::Write}\label{wxoutputstreamwrite} | |
91 | ||
92 | \func{wxOutputStream\&}{Write}{\param{const void *}{buffer}, \param{size\_t}{ size}} | |
93 | ||
94 | Writes up to the specified amount of bytes using the data of {\it buffer}. Note | |
95 | that not all data can always be written so you must check the number of bytes | |
96 | really written to the stream using \helpref{LastWrite()}{wxoutputstreamlastwrite} | |
97 | when this function returns. In some cases (for example a write end of a pipe | |
98 | which is currently full) it is even possible that there is no errors and zero | |
99 | bytes have been written. | |
100 | ||
101 | This function returns a reference on the current object, so the user can test | |
102 | any states of the stream right away. | |
103 | ||
104 | \func{wxOutputStream\&}{Write}{\param{wxInputStream\&}{ stream\_in}} | |
105 | ||
106 | Reads data from the specified input stream and stores them | |
107 | in the current stream. The data is read until an error is raised | |
108 | by one of the two streams. | |
109 |