Re: [directfb-users] Mouse and Keyboard input with DirectFB

[Colin Newell]

Ville Syrjälä wrote: On Thu, Apr 19, 2007 at 03:24:58PM +1000, Colin Newell wrote: I am new to using DirectFB. I have been able to get basic programs working doing output. However I can't get mouse and keyboard input working. - My PC has a PS2 mouse. Do I need an entry /dev/mouse to point to the device file for this? (The device file is /dev/input/mice) (The FAQ says I need /dev/mouse if I'm using a serial mouse. What about a PS2 mouse?) Since sending the questions I have got event driven keyboard and mouse input to work. I still don't know why the example that does non-event driven keyboard access doesn't appear to work. The ps2mouse driver should attempt to use /dev/psaux, /dev/misc/psaux or /dev/input/mice. However I recommend you try the linuxinput driver instead of ps2mouse. It will use the /dev/input/eventX device. What is the linuxinput driver? This is not so important now that the mouse and keyboard are working, but what do I need to do to use the linuxinput driver? If I need to specify the protocol in ~/.directfbrc, what protocol should I use? The X11 config has: Option "Protocol" "IMPS/2" What is the corresponding DirectFB mouse protocol? The ps2mouse driver accepts "PS/2" and "IMPS/2" as protocol. - I can't get keyboard input working, and have no idea what i'm doing wrong. Can someone explain how directfb reads the keyboard? Does it use a /dev/ttyx file? Yes, the keyboard driver uses /dev/ttyX. If you use the linuxinput driver /dev/ttyX is used only to get the keyboard map and /dev/input/eventX is used for the actual input events. Again, I recommend linuxinput. I do dfb->GetInputDevice (dfb, DIDID_KEYBOARD, &keyboard), and then keyboard->GetKeyState (keyboard, DIKI_XXXX, &state) - but don't get any keys pressed. (This is the technique shown in tutorial example "Moving a sprite with the cursory keys") Run dfbinfo and see what input devices it finds. If that looks decent you can run df_input from DirectFB-examples to see what kind of events you get. Yes the dfbinfo example showed this for the mouse and kbd: Input (00) Keyboard                        (primary keyboard)    Type: KEYBOARD    Caps: KEYS Input (01) IMPS/2 Mouse                    (primary mouse)    Type: MOUSE    Caps: AXES BUTTONS    Max. Axis: 2    Max. Button: 2 And the df_input example worked. The only small question mark is that I noticed that the program can get well behind the mouse if there is a lot of movement, as if the drawing of the mouse position crosslines could not keep up with the mouse movement events, which kind of surprised me. - what do I have to do to get a mouse cursor on the screen? If the mouse is correctly configured, will the mouse cursor show up automagically? A mouse X11 style 'X' shaped cursor does display - I presume that when I get the mouse input working, it will control this cursor. What program you're running that has this X cursor (XDirectFB maybe?). The default DirectFB cursor looks a bit like a water droplet. Before I was running the directfb programs I had been running an X-server, but stopped it. After I stop the X-server, then from then on the X-server's mouse cursor shows up on the screen when a DirectFB program is run - it always shows up in the same position and doesn't move with the mouse. I tried a few things to clear it but couldn't find anything that worked. DirectFB's mouse cursor is displayed in some of the test examples, and looks, as you say, like a water droplet. Regards and thanks, Colin

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