]>
Commit | Line | Data |
---|---|---|
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} | |
23 | ||
24 | \func{}{wxOutputStream}{\void} | |
25 | ||
26 | Creates a dummy wxOutputStream object. | |
27 | ||
28 | ||
29 | \membersection{wxOutputStream::\destruct{wxOutputStream}} | |
30 | ||
31 | \func{}{\destruct{wxOutputStream}}{\void} | |
32 | ||
33 | Destructor. | |
34 | ||
35 | ||
36 | \membersection{wxOutputStream::LastWrite}\label{wxoutputstreamlastwrite} | |
37 | ||
38 | \constfunc{size\_t}{LastWrite}{\void} | |
39 | ||
40 | Returns the number of bytes written during the last | |
41 | \helpref{Write()}{wxoutputstreamwrite}. It may return $0$ even if there is no | |
42 | error on the stream if it is only temporarily impossible to write to it. | |
43 | ||
44 | ||
45 | \membersection{wxOutputStream::PutC} | |
46 | ||
47 | \func{void}{PutC}{\param{char}{ c}} | |
48 | ||
49 | Puts the specified character in the output queue and increments the | |
50 | stream position. | |
51 | ||
52 | ||
53 | \membersection{wxOutputStream::SeekO}\label{wxoutputstreamseeko} | |
54 | ||
55 | \func{off\_t}{SeekO}{\param{off\_t}{ pos}, \param{wxSeekMode}{ mode = wxFromStart}} | |
56 | ||
57 | Changes the stream current position. | |
58 | ||
59 | \wxheading{Parameters} | |
60 | ||
61 | \docparam{pos}{Offset to seek to.} | |
62 | ||
63 | \docparam{mode}{One of {\bf wxFromStart}, {\bf wxFromEnd}, {\bf wxFromCurrent}.} | |
64 | ||
65 | \wxheading{Return value} | |
66 | ||
67 | The new stream position or wxInvalidOffset on error. | |
68 | ||
69 | ||
70 | \membersection{wxOutputStream::TellO} | |
71 | ||
72 | \constfunc{off\_t}{TellO}{\void} | |
73 | ||
74 | Returns the current stream position. | |
75 | ||
76 | ||
77 | \membersection{wxOutputStream::Write}\label{wxoutputstreamwrite} | |
78 | ||
79 | \func{wxOutputStream\&}{Write}{\param{const void *}{buffer}, \param{size\_t}{ size}} | |
80 | ||
81 | Writes up to the specified amount of bytes using the data of {\it buffer}. Note | |
82 | that not all data can always be written so you must check the number of bytes | |
83 | really written to the stream using \helpref{LastWrite()}{wxoutputstreamlastwrite} | |
84 | when this function returns. In some cases (for example a write end of a pipe | |
85 | which is currently full) it is even possible that there is no errors and zero | |
86 | bytes have been written. | |
87 | ||
88 | This function returns a reference on the current object, so the user can test | |
89 | any states of the stream right away. | |
90 | ||
91 | \func{wxOutputStream\&}{Write}{\param{wxInputStream\&}{ stream\_in}} | |
92 | ||
93 | Reads data from the specified input stream and stores them | |
94 | in the current stream. The data is read until an error is raised | |
95 | by one of the two streams. | |
96 |