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Fixed bug #61 Date: Mon, 24 Feb 2003 13:35:11 +0800 From: "Leonidas" Subject: [SDL] Re: Trigger mouse wheel event -- not in X-environment I have looked into the codes for the IMPS/2 mouse wheel mode of fbcon driver. But I found something weird. Here's the original codes to set a mouse device into IMPS/2 mode in libSDL. In the file src/video/fbcon/SDL_fbevents.c In function static int set_imps2_mode(int fd) ... Uint8 set_imps2[] = {0xf3, 200, 0xf3, 100, 0xf3, 80}; Uint8 reset = 0xff; fd_set fdset; struct timeval tv; int retval = 0; // Set mouse device fd into IMPS/2 mode if ( write(fd, &set_imps2, sizeof(set_imps2)) == sizeof(set_imps2) ) { // ??? then RESET it..??? if (write(fd, &reset, sizeof (reset)) == sizeof (reset) ) { retval = 1; } } ........... Since it sets IMPS/2 mode then reset it, so you will never get a mouse into IMPS/2 mode to use its wheel. What I did to make the wheel usable is remove the RESET codes. .... if ( write(fd, &set_imps2, sizeof(set_imps2)) == sizeof(set_imps2) ) { /* if (write(fd, &reset, sizeof (reset)) == sizeof (reset) ) { } */ retval = 1; } .... And in FB_OpenMouse(_THIS) Make the device /dev/psaux to be setted into imps2 mode such that it can be detected its a imps/2 mouse or not. (my mouse device is on ps2, but the codes only set /dev/input/mice device originally) Then I have done, I can use the mouse wheel when SDL uses frame buff driver. I dont exactly know I did right or wrong, I just change it for my usuage. Correct me please, if I did something wrong. Best regards, Li Tsung Lin IAP Product Dept. Engineer EeRise Corp. (Image Processing System, Computer Vision System) Hsin Tien, Taipei Hsien, Taiwan, R.O.C.
author Sam Lantinga <slouken@libsdl.org>
date Wed, 22 Mar 2006 07:22:40 +0000
parents 355632dca928
children
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<HTML
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>Event Functions.</TITLE
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>Event Functions.</H1
><DIV
CLASS="TOC"
><DL
><DT
><B
>Table of Contents</B
></DT
><DT
><A
HREF="sdlpumpevents.html"
>SDL_PumpEvents</A
>&nbsp;--&nbsp;Pumps the event loop, gathering events from the input devices.</DT
><DT
><A
HREF="sdlpeepevents.html"
>SDL_PeepEvents</A
>&nbsp;--&nbsp;Checks the event queue for messages and optionally returns them.</DT
><DT
><A
HREF="sdlpollevent.html"
>SDL_PollEvent</A
>&nbsp;--&nbsp;Polls for currently pending events.</DT
><DT
><A
HREF="sdlwaitevent.html"
>SDL_WaitEvent</A
>&nbsp;--&nbsp;Waits indefinitely for the next available event.</DT
><DT
><A
HREF="sdlpushevent.html"
>SDL_PushEvent</A
>&nbsp;--&nbsp;Pushes an event onto the event queue</DT
><DT
><A
HREF="sdlseteventfilter.html"
>SDL_SetEventFilter</A
>&nbsp;--&nbsp;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
>&nbsp;--&nbsp;Retrieves a pointer to he event filter</DT
><DT
><A
HREF="sdleventstate.html"
>SDL_EventState</A
>&nbsp;--&nbsp;This function allows you to set the state of processing certain events.</DT
><DT
><A
HREF="sdlgetkeystate.html"
>SDL_GetKeyState</A
>&nbsp;--&nbsp;Get a snapshot of the current keyboard state</DT
><DT
><A
HREF="sdlgetmodstate.html"
>SDL_GetModState</A
>&nbsp;--&nbsp;Get the state of modifier keys.</DT
><DT
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>SDL_SetModState</A
>&nbsp;--&nbsp;Set the current key modifier state</DT
><DT
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HREF="sdlgetkeyname.html"
>SDL_GetKeyName</A
>&nbsp;--&nbsp;Get the name of an SDL virtual keysym</DT
><DT
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>SDL_EnableUNICODE</A
>&nbsp;--&nbsp;Enable UNICODE translation</DT
><DT
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>SDL_EnableKeyRepeat</A
>&nbsp;--&nbsp;Set keyboard repeat rate.</DT
><DT
><A
HREF="sdlgetmousestate.html"
>SDL_GetMouseState</A
>&nbsp;--&nbsp;Retrieve the current state of the mouse</DT
><DT
><A
HREF="sdlgetrelativemousestate.html"
>SDL_GetRelativeMouseState</A
>&nbsp;--&nbsp;Retrieve the current state of the mouse</DT
><DT
><A
HREF="sdlgetappstate.html"
>SDL_GetAppState</A
>&nbsp;--&nbsp;Get the state of the application</DT
><DT
><A
HREF="sdljoystickeventstate.html"
>SDL_JoystickEventState</A
>&nbsp;--&nbsp;Enable/disable joystick event polling</DT
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><TD
ALIGN="LEFT"
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><A
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>SDL_PumpEvents</A
></TD
><TD
ALIGN="LEFT"
VALIGN="TOP"
>Pumps the event loop, gathering events from the input devices</TD
></TR
><TR
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ALIGN="LEFT"
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><A
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>SDL_PeepEvents</A
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>Checks the event queue for messages and optionally returns them</TD
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>SDL_PollEvent</A
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>Polls for currently pending events</TD
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>SDL_WaitEvent</A
></TD
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>Waits indefinitely for the next available event</TD
></TR
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ALIGN="LEFT"
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><A
HREF="sdlpushevent.html"
>SDL_PushEvent</A
></TD
><TD
ALIGN="LEFT"
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>Pushes an event onto the event queue</TD
></TR
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><A
HREF="sdlseteventfilter.html"
>SDL_SetEventFilter</A
></TD
><TD
ALIGN="LEFT"
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>Sets up a filter to process all events</TD
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><A
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>SDL_EventState</A
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>Allows you to set the state of processing certain events</TD
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><A
HREF="sdlgetkeystate.html"
>SDL_GetKeyState</A
></TD
><TD
ALIGN="LEFT"
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>Get a snapshot of the current keyboard state</TD
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><A
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>SDL_GetModState</A
></TD
><TD
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>Get the state of modifier keys</TD
></TR
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><A
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>SDL_SetModState</A
></TD
><TD
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>Set the state of modifier keys</TD
></TR
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><TD
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><A
HREF="sdlgetkeyname.html"
>SDL_GetKeyName</A
></TD
><TD
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>Get the name of an SDL virtual keysym</TD
></TR
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><A
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>SDL_EnableUNICODE</A
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>Enable UNICODE translation</TD
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><A
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>SDL_EnableKeyRepeat</A
></TD
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>Set keyboard repeat rate</TD
></TR
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><A
HREF="sdlgetmousestate.html"
>SDL_GetMouseState</A
></TD
><TD
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>Retrieve the current state of the mouse</TD
></TR
><TR
><TD
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><A
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>SDL_GetRelativeMouseState</A
></TD
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>Retrieve the current state of the mouse</TD
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><A
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>SDL_GetAppState</A
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>Get the state of the application</TD
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>SDL_JoystickEventState</A
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>Enable/disable joystick event polling</TD
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