Hi and thanks for your example code. Using your function "sendKey" unfortunately all keysyms work but the direction arrows, result that I already obtained. The direction arrows still produce the effect: - up and down cause no visible effect - right and left cause right+down and left+up. <div class="gmail_quote">On Mon, May 28, 2012 at 10:25 PM, Onur Küçük <<a href="mailto:onur@delipenguen.net" target="_blank">onur@delipenguen.net</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="HOEnZb"><div class="h5"> On Sun, 27 May 2012 23:46:45 +0200 Giuseppe Penone <<a href="mailto:giuspen@gmail.com">giuspen@gmail.com</a>> wrote: > Hi, > I'm writing a simple open source gtk(mm) "on screen keyboard" ( > <a href="http://code.google.com/p/giuspen-x-osk/source/checkout" target="_blank">http://code.google.com/p/giuspen-x-osk/source/checkout</a>) > and, while all characters and modifiers work pretty good, I'm > struggling from several days with the direction arrows > but am absolutely stuck and clueless. > > For all characters and modifiers it works simply with something like: > > XSync(mp_display, 0); > if(flags & FLAG_KEY_DOWN) > { > XTestFakeKeyEvent(mp_display, XKeysymToKeycode(mp_display, > keysym), 1 , 0); > XFlush(mp_display); > } > if(flags & FLAG_KEY_UP) > { > XTestFakeKeyEvent(mp_display, XKeysymToKeycode(mp_display, > keysym), 0, 0); > XFlush(mp_display); > } > > but I really found no way to have the direction arrows working. > > The result is that sending the XK_Up and XK_Down arrow doesn't produce > visible effect, the XK_Left > and XK_Right instead sometimes produce a double movement and sometimes > (after messing with XK_Up > and XK_Down button clicks) produce a single movement in the right > direction plus a movement up or down. > > If anybody can give me even a simple clue/link that would be of great > help. Thanks in advance. </div></div> I suspect your key events are going out of sync. I have put an example code here [1] ,take a look at the sendKey part [1] <a href="http://www.delipenguen.net/code/small/f5.c" target="_blank">http://www.delipenguen.net/code/small/f5.c</a> -- Onur Küçük Knowledge speaks, <onur.--.-.<a href="http://delipenguen.net" target="_blank">delipenguen.net</a>> but wisdom listens _______________________________________________ <a href="mailto:xorg@lists.x.org">xorg@lists.x.org</a>: X.Org support Archives: <a href="http://lists.freedesktop.org/archives/xorg" target="_blank">http://lists.freedesktop.org/archives/xorg</a> Info: <a href="http://lists.x.org/mailman/listinfo/xorg" target="_blank">http://lists.x.org/mailman/listinfo/xorg</a> Your subscription address: <a href="mailto:giuspen@gmail.com">giuspen@gmail.com</a></blockquote></div>