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annotate docs/man3/SDL_KeyboardEvent.3 @ 2866:e532417a6977

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Fixed SDL 1.2 compatibility problem. The API specifies that SDL_OpenAudio() will fill out the 'desired' audio spec with the correct samples and size set by the driver. This value is important since it may be used by applications that size audio buffers, etc. However, we want to allow advanced applications to call SDL_OpenAudioDevice() which gets passed a const 'desired' parameter, and have the correct data filled into the 'obtained' parameter, possibly allowing or not allowing format changes. So... 'obtained' becomes the audio format the user callback is expected to use, and we add flags to allow the application to specify which format changes are allowed. Note: We really need to add a way to query the 'obtained' audio spec.
author Sam Lantinga <slouken@libsdl.org>
date Sat, 13 Dec 2008 06:36:47 +0000
parents 546f7c1eb755
children 1238da4a7112
rev   line source
181
e5bc29de3f0a Updated from the SDL Documentation Project
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1 .TH "SDL_KeyboardEvent" "3" "Tue 11 Sep 2001, 22:59" "SDL" "SDL API Reference"
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2 .SH "NAME"
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3 SDL_KeyboardEvent \- Keyboard event structure
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4 .SH "STRUCTURE DEFINITION"
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5 .PP
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6 .nf
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7 \f(CWtypedef struct{
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8 Uint8 type;
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9 Uint8 state;
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10 SDL_keysym keysym;
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11 } SDL_KeyboardEvent;\fR
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12 .fi
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13 .PP
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14 .SH "STRUCTURE DATA"
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15 .TP 20
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16 \fBtype\fR
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17 \fBSDL_KEYDOWN\fP or \fBSDL_KEYUP\fP
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18 .TP 20
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19 \fBstate\fR
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20 \fBSDL_PRESSED\fP or \fBSDL_RELEASED\fP
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21 .TP 20
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22 \fBkeysym\fR
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23 Contains key press information
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24 .SH "DESCRIPTION"
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25 .PP
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26 \fBSDL_KeyboardEvent\fR is a member of the \fI\fBSDL_Event\fR\fR union and is used when an event of type \fBSDL_KEYDOWN\fP or \fBSDL_KEYUP\fP is reported\&.
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27 .PP
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28 The \fBtype\fR and \fBstate\fR actually report the same information, they just use different values to do it! A keyboard event occurs when a key is released (\fBtype\fR=\fBSDK_KEYUP\fP or \fBstate\fR=\fBSDL_RELEASED\fP) and when a key is pressed (\fBtype\fR=\fBSDL_KEYDOWN\fP or \fBstate\fR=\fBSDL_PRESSED\fP)\&. The information on what key was pressed or released is in the \fI\fBkeysym\fR\fR structure\&.
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29 .PP
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30 .RS
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31 \fBNote:
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32 .PP
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33 Repeating \fBSDL_KEYDOWN\fP events will occur if key repeat is enabled (see \fI\fBSDL_EnableKeyRepeat\fP\fR)\&.
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34 .RE
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35 .SH "SEE ALSO"
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36 .PP
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37 \fI\fBSDL_Event\fR\fR, \fI\fBSDL_keysym\fR\fR, \fI\fBSDL_EnableKeyRepeat\fP\fR, \fI\fBSDL_EnableUNICODE\fP\fR
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38 ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 22:59