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SDL2 for the Nintendo Wii U (build with "cmake [SDL source path] -DCMAKE_TOOLCHAIN_FILE=$WUT_ROOT/share/wut.toolchain.cmake -DCMAKE_INSTALL_PREFIX=$DEVKITPRO/portlibs/wiiu")
6592f8b975
Matthias 2011-03-20 23:07:02 PDT On X11, SDL 1.3 does not generate a mouse wheel event. Instead, button down/buttton up events are generated by SDL. After looking at the code in SDL_x11events.c, I assume this is due to the fact that X11 does not have a dedicated mouse wheel event. I did a little research on the behavior of mouse wheel events on X11 systems. Apparently, mouse wheel events generate a button down/button up event with the same time, i.e. with exact same timestamp. Attached you can find my changes to SDL_x11events.c, which generates SDL mouse wheel events for those button down events that have a button release event immediately following it (for the same button, and with the same timestamp). I did have to make an assumption: As standard X11 implementations know only 5 buttons, I have mapped Button4 to "wheel up" (i.e. +1), and Button5 to "wheel down" (i.e. -1). Note that if you include this patch, no SDL button down/up events will be generated on X11 platforms for mouse wheel events (which is probably a significant change for those that have programmed their code to work with them). |
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| README | ||
| README-SDL.txt | ||
| README.android | ||
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| README.ds | ||
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| README.Platforms | ||
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| TODO | ||
| UNDER_CONSTRUCTION.txt | ||
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| Watcom-Win32.zip | ||
| WhatsNew | ||
Simple DirectMedia Layer
(SDL)
Version 1.3
---
http://www.libsdl.org/
This is the Simple DirectMedia Layer, a general API that provides low
level access to audio, keyboard, mouse, joystick, 3D hardware via OpenGL,
and 2D framebuffer across multiple platforms.
The current version supports Windows, Windows CE, Mac OS X, Linux, FreeBSD,
NetBSD, OpenBSD, BSD/OS, Solaris, iOS, and Android. The code contains
support for other operating systems but those are not officially supported.
SDL is written in C, but works with C++ natively, and has bindings to
several other languages, including Ada, C#, Eiffel, Erlang, Euphoria,
Go, Guile, Haskell, Java, Lisp, Lua, ML, Objective C, Pascal, Perl, PHP,
Pike, Pliant, Python, Ruby, and Smalltalk.
This library is distributed under GNU LGPL version 2, which can be
found in the file "COPYING". This license allows you to use SDL
freely in commercial programs as long as you link with the dynamic
library.
The best way to learn how to use SDL is to check out the header files in
the "include" subdirectory and the programs in the "test" subdirectory.
The header files and test programs are well commented and always up to date.
More documentation is available in HTML format in "docs/index.html", and
a documentation wiki is available online at:
http://www.libsdl.org/cgi/docwiki.cgi
The test programs in the "test" subdirectory are in the public domain.
Frequently asked questions are answered online:
http://www.libsdl.org/faq.php
If you need help with the library, or just want to discuss SDL related
issues, you can join the developers mailing list:
http://www.libsdl.org/mailing-list.php
Enjoy!
Sam Lantinga (slouken@libsdl.org)