Mercurial > sdl-ios-xcode
view docs/html/eventfunctions.html @ 4170:092c0bc69155 SDL-1.2
Fixed bug #618
Description From Tim Angus 2008-08-30 12:23:56 (-) [reply]
As we all know SDL 1.2 doesn't handle dead keys well since one key press
potentially equals two (or more) characters. For example, on many layouts,
keying <backquote>,<space> results in <no character>,<backquote><space>. Since
the unicode member of the SDL_keysym struct only has room for one character,
only one can be returned.
On Linux, the first character is returned. On Windows however, unless the exact
number of characters generated by the keypress is 1, nothing is returned. The
following patch addresses this inconsistency.
Updated patch which includes a further fix to the handling of the numpad when
numlock is on. This further fix is courtesy Amanieu d'Antras.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Mon, 13 Apr 2009 08:42:09 +0000 |
parents | 355632dca928 |
children |
line wrap: on
line source
<HTML ><HEAD ><TITLE >Event Functions.</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ "><LINK REL="HOME" TITLE="SDL Library Documentation" HREF="index.html"><LINK REL="UP" TITLE="Events" HREF="event.html"><LINK REL="PREVIOUS" TITLE="SDLKey" HREF="sdlkey.html"><LINK REL="NEXT" TITLE="SDL_PumpEvents" HREF="sdlpumpevents.html"></HEAD ><BODY CLASS="SECT1" BGCOLOR="#FFF8DC" TEXT="#000000" LINK="#0000ee" VLINK="#551a8b" ALINK="#ff0000" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >SDL Library Documentation</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="sdlkey.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" >Chapter 8. Events</TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="sdlpumpevents.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="EVENTFUNCTIONS" ></A >Event Functions.</H1 ><DIV CLASS="TOC" ><DL ><DT ><B >Table of Contents</B ></DT ><DT ><A HREF="sdlpumpevents.html" >SDL_PumpEvents</A > -- Pumps the event loop, gathering events from the input devices.</DT ><DT ><A HREF="sdlpeepevents.html" >SDL_PeepEvents</A > -- Checks the event queue for messages and optionally returns them.</DT ><DT ><A HREF="sdlpollevent.html" >SDL_PollEvent</A > -- Polls for currently pending events.</DT ><DT ><A HREF="sdlwaitevent.html" >SDL_WaitEvent</A > -- Waits indefinitely for the next available event.</DT ><DT ><A HREF="sdlpushevent.html" >SDL_PushEvent</A > -- Pushes an event onto the event queue</DT ><DT ><A HREF="sdlseteventfilter.html" >SDL_SetEventFilter</A > -- Sets up a filter to process all events before they are posted to the event queue.</DT ><DT ><A HREF="sdlgeteventfilter.html" >SDL_GetEventFilter</A > -- Retrieves a pointer to he event filter</DT ><DT ><A HREF="sdleventstate.html" >SDL_EventState</A > -- This function allows you to set the state of processing certain events.</DT ><DT ><A HREF="sdlgetkeystate.html" >SDL_GetKeyState</A > -- Get a snapshot of the current keyboard state</DT ><DT ><A HREF="sdlgetmodstate.html" >SDL_GetModState</A > -- Get the state of modifier keys.</DT ><DT ><A HREF="sdlsetmodstate.html" >SDL_SetModState</A > -- Set the current key modifier state</DT ><DT ><A HREF="sdlgetkeyname.html" >SDL_GetKeyName</A > -- Get the name of an SDL virtual keysym</DT ><DT ><A HREF="sdlenableunicode.html" >SDL_EnableUNICODE</A > -- Enable UNICODE translation</DT ><DT ><A HREF="sdlenablekeyrepeat.html" >SDL_EnableKeyRepeat</A > -- Set keyboard repeat rate.</DT ><DT ><A HREF="sdlgetmousestate.html" >SDL_GetMouseState</A > -- Retrieve the current state of the mouse</DT ><DT ><A HREF="sdlgetrelativemousestate.html" >SDL_GetRelativeMouseState</A > -- Retrieve the current state of the mouse</DT ><DT ><A HREF="sdlgetappstate.html" >SDL_GetAppState</A > -- Get the state of the application</DT ><DT ><A HREF="sdljoystickeventstate.html" >SDL_JoystickEventState</A > -- Enable/disable joystick event polling</DT ></DL ></DIV ><DIV CLASS="INFORMALTABLE" ><A NAME="AEN5312" ></A ><P ></P ><TABLE BORDER="0" CLASS="CALSTABLE" ><TBODY ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><A HREF="sdlpumpevents.html" >SDL_PumpEvents</A ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Pumps the event loop, gathering events from the input devices</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><A HREF="sdlpeepevents.html" >SDL_PeepEvents</A ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Checks the event queue for messages and optionally returns them</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><A HREF="sdlpollevent.html" >SDL_PollEvent</A ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Polls for currently pending events</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><A HREF="sdlwaitevent.html" >SDL_WaitEvent</A ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Waits indefinitely for the next available event</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><A HREF="sdlpushevent.html" >SDL_PushEvent</A ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Pushes an event onto the event queue</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><A HREF="sdlseteventfilter.html" >SDL_SetEventFilter</A ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Sets up a filter to process all events</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><A HREF="sdleventstate.html" >SDL_EventState</A ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Allows you to set the state of processing certain events</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><A HREF="sdlgetkeystate.html" >SDL_GetKeyState</A ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Get a snapshot of the current keyboard state</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><A HREF="sdlgetmodstate.html" >SDL_GetModState</A ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Get the state of modifier keys</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><A HREF="sdlsetmodstate.html" >SDL_SetModState</A ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Set the state of modifier keys</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><A HREF="sdlgetkeyname.html" >SDL_GetKeyName</A ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Get the name of an SDL virtual keysym</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><A HREF="sdlenableunicode.html" >SDL_EnableUNICODE</A ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Enable UNICODE translation</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><A HREF="sdlenablekeyrepeat.html" >SDL_EnableKeyRepeat</A ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Set keyboard repeat rate</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><A HREF="sdlgetmousestate.html" >SDL_GetMouseState</A ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Retrieve the current state of the mouse</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><A HREF="sdlgetrelativemousestate.html" >SDL_GetRelativeMouseState</A ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Retrieve the current state of the mouse</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><A HREF="sdlgetappstate.html" >SDL_GetAppState</A ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Get the state of the application</TD ></TR ><TR ><TD ALIGN="LEFT" VALIGN="TOP" ><A HREF="sdljoystickeventstate.html" >SDL_JoystickEventState</A ></TD ><TD ALIGN="LEFT" VALIGN="TOP" >Enable/disable joystick event polling</TD ></TR ></TBODY ></TABLE ><P ></P ></DIV ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="sdlkey.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="sdlpumpevents.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >SDLKey</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="event.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >SDL_PumpEvents</TD ></TR ></TABLE ></DIV ></BODY ></HTML >