Mercurial > sdl-ios-xcode
view docs/html/eventfunctions.html @ 3191:91b335df6fc8
Fixed bug #750
Since many different event structures include windowID it should be placed near
the beginning of the structure (preferably right after type) so it's position
is the same between different events.
This is to avoid code like this:
if (event.type == SDL_WINDOWEVENT)
win = event.window.windowID;
else if ((SDL_EVENTMASK(event.type) & SDL_KEYEVENTMASK) != 0)
win = event.key.windowID;
else if (event.type == SDL_TEXTINPUT)
win = event.text.windowID;
else if (event.type == SDL_MOUSEMOTION)
win = event.motion.windowID;
else if ((SDL_EVENTMASK(event.type) & (SDL_MOUBUTTONDOWNMASK |
SDL_MOUBUTTONUPMASK)) != 0)
win = event.button.windowID;
else if (event.type == SDL_MOUSEWHEEL)
win = event.wheel.windowID;
...
in favor of:
win = event.window.windowID;
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Wed, 10 Jun 2009 14:00:21 +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 >