view docs/man3/SDL_JoystickGetAxis.3 @ 4240:cb44bf8f8a0f SDL-1.2

Fixed bug #719 Mike Blaguszewski 2009-03-23 13:32:22 PDT Patch to 1.2 HEAD that fixes the issue Fixes bug in SDL 1.2.13 where clicking on an app's title bar to activate the app, when cursor capturing is enabled, will cause the window to jump. This is because SDL's handler for activate events calls a low-level Quartz function to move the cursor. Calling this when the mouse is down in the title bar confuses the WindowServer into thinking the title bar has been dragged. The patch defers processing of activate events in this case. The bottom line is that CGWarpMouseCursorPosition() is not safe to call when the mouse in down in a window's title bar.
author Sam Lantinga <slouken@libsdl.org>
date Wed, 23 Sep 2009 07:18:02 +0000
parents 4e3b250c950e
children 1238da4a7112
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.TH "SDL_JoystickGetAxis" "3" "Tue 11 Sep 2001, 23:00" "SDL" "SDL API Reference" 
.SH "NAME"
SDL_JoystickGetAxis \- Get the current state of an axis
.SH "SYNOPSIS"
.PP
\fB#include "SDL\&.h"
.sp
\fBSint16 \fBSDL_JoystickGetAxis\fP\fR(\fBSDL_Joystick *joystick, int axis\fR);
.SH "DESCRIPTION"
.PP
\fBSDL_JoystickGetAxis\fP returns the current state of the given \fBaxis\fR on the given \fBjoystick\fR\&.
.PP
On most modern joysticks the X axis is usually represented by \fBaxis\fR 0 and the Y axis by \fBaxis\fR 1\&. The value returned by \fBSDL_JoystickGetAxis\fP is a signed integer (-32768 to 32768) representing the current position of the \fBaxis\fR, it maybe necessary to impose certain tolerances on these values to account for jitter\&. It is worth noting that some joysticks use axes 2 and 3 for extra buttons\&.
.SH "RETURN VALUE"
.PP
Returns a 16-bit signed integer representing the current position of the \fBaxis\fR\&.
.SH "EXAMPLES"
.PP
.PP
.nf
\f(CWSint16 x_move, y_move;
SDL_Joystick *joy1;
\&.
\&.
x_move=SDL_JoystickGetAxis(joy1, 0);
y_move=SDL_JoystickGetAxis(joy1, 1);\fR
.fi
.PP
.SH "SEE ALSO"
.PP
\fI\fBSDL_JoystickNumAxes\fP\fR
...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:00