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annotate docs/man3/SDL_JoystickGetHat.3 @ 997:3bf4103b2b89

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Date: Sat, 27 Nov 2004 13:35:43 +0100 From: "Martin Bickel" Subject: [SDL] Patch: fixing uninitilized palette while running Valgrind over my application I found the following problem in SDL: The function MapNto1 allocates SDL_Color colors[256] but does not initialize it. SDL_DitherColors is then called which initialized the r, g and b component, but not the 'unused' component of each color. When Map1to1 is called from MapNto1, it runs a memcmp on the colors, which also evaluates the unused component and therefor returns differences much more often than necessary. So the 'unused' component of SDL_Color should be initialized. This patch does this by calling memset for the whole array in MapNto1 .
author Sam Lantinga <slouken@libsdl.org>
date Tue, 30 Nov 2004 14:28:20 +0000
parents e5bc29de3f0a
children 546f7c1eb755
rev   line source
181
e5bc29de3f0a Updated from the SDL Documentation Project
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1 .TH "SDL_JoystickGetHat" "3" "Tue 11 Sep 2001, 23:00" "SDL" "SDL API Reference"
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2 .SH "NAME"
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3 SDL_JoystickGetHat\- Get the current state of a joystick hat
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4 .SH "SYNOPSIS"
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5 .PP
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6 \fB#include "SDL\&.h"
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7 .sp
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8 \fBUint8 \fBSDL_JoystickGetHat\fP\fR(\fBSDL_Joystick *joystick, int hat\fR);
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9 .SH "DESCRIPTION"
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10 .PP
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11 SDL_JoystickGetHat returns the current state of the given \fBhat\fR on the given \fBjoystick\fR\&.
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12 .SH "RETURN VALUE"
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13 .PP
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14 The current state is returned as a Uint8 which is defined as an OR\&'d combination of one or more of the following
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15 .IP "" 10
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16 \fBSDL_HAT_CENTERED\fP
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17 .IP "" 10
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18 \fBSDL_HAT_UP\fP
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19 .IP "" 10
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20 \fBSDL_HAT_RIGHT\fP
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21 .IP "" 10
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22 \fBSDL_HAT_DOWN\fP
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23 .IP "" 10
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24 \fBSDL_HAT_LEFT\fP
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25 .IP "" 10
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26 \fBSDL_HAT_RIGHTUP\fP
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27 .IP "" 10
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28 \fBSDL_HAT_RIGHTDOWN\fP
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29 .IP "" 10
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30 \fBSDL_HAT_LEFTUP\fP
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31 .IP "" 10
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32 \fBSDL_HAT_LEFTDOWN\fP
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33 .SH "SEE ALSO"
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34 .PP
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35 \fI\fBSDL_JoystickNumHats\fP\fR
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36 ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:00