view docs/man3/SDL_JoystickOpened.3 @ 997:3bf4103b2b89

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
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.TH "SDL_JoystickOpened" "3" "Tue 11 Sep 2001, 23:00" "SDL" "SDL API Reference" 
.SH "NAME"
SDL_JoystickOpened\- Determine if a joystick has been opened
.SH "SYNOPSIS"
.PP
\fB#include "SDL\&.h"
.sp
\fBint \fBSDL_JoystickOpened\fP\fR(\fBint index\fR);
.SH "DESCRIPTION"
.PP
Determines whether a joystick has already been opened within the application\&. \fBindex\fR refers to the N\&'th joystick on the system\&.
.SH "RETURN VALUE"
.PP
Returns \fB1\fR if the joystick has been opened, or \fB0\fR if it has not\&.
.SH "SEE ALSO"
.PP
\fI\fBSDL_JoystickOpen\fP\fR, \fI\fBSDL_JoystickClose\fP\fR
...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:00