<div dir="ltr"><div>Note that in the xcb_grab_pointer() call you are passing an extensive event mask, whereas with XGrabPointer() you pass only a few events. The big event mask includes events that are not allowed according to the protocol specification: I do not know whether XCB or the server care though. You might want to try <br></div><div>Â Â Â Â XCB_EVENT_MASK_BUTTON_PRESS | XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_POINTER_MOTION</div><div>instead ofÂ 0xFFFE.</div><br>More importantly, the grab is not complete until the reply to the xcb_grab_pointer() request has been received. That means you need to get that reply before going on. I ended up with code like this: it may not be quite what you want, but may be better than what you have.<br><br>Â xcb_grab_pointer_cookie_t grab_cookie; Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â <br>Â xcb_grab_pointer_reply_t *grab_reply; Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â <br>Â xcb_generic_error_t *grab_error; Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â <br><br><div>...</div><div><br></div><div>Â Â puts("grab pointer"); Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â <br>Â Â grab_cookie = xcb_grab_pointer( Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â <br>Â Â Â Â connection, Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â <br>Â Â Â Â 1, Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â <br>Â Â Â Â iface->window, Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â <br>Â Â Â Â XCB_EVENT_MASK_BUTTON_PRESS | Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â <br>Â Â Â Â Â XCB_EVENT_MASK_BUTTON_RELEASE | Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â <br>Â Â Â Â Â XCB_EVENT_MASK_POINTER_MOTION, Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â <br>Â Â Â Â XCB_GRAB_MODE_ASYNC, Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â <br>Â Â Â Â XCB_GRAB_MODE_ASYNC, Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â <br>Â Â Â Â XCB_NONE, Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â <br>Â Â Â Â XCB_NONE, Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â <br>Â Â Â Â XCB_CURRENT_TIME Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â <br>Â Â ); Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â <br>Â Â grab_reply = xcb_grab_pointer_reply(connection, grab_cookie, &grab_error); Â Â <br>Â Â if (!grab_reply || grab_reply->status != XCB_GRAB_STATUS_SUCCESS) { Â Â Â Â Â <br>Â Â Â printf("grab failed"); Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â <br>Â Â Â return false; Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â <br>Â Â }Â </div><div><br></div><div>The grab seemed to succeed on my box, so I guess things are good. Try that and let us know how it goes.</div><div><br></div><div>Thanks for sharing this journey with us!Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â <br></div></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Sat, Feb 15, 2025 at 2:57â€¯AM Steven J Abner <<a href="mailto:pheonix.sja@att.net">pheonix.sja@att.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">On Fri, Feb 14 2025 at 11:13:56 PM +0000, Steven J Abner <br> <<a href="mailto:pheonix.sja@att.net" target="_blank">pheonix.sja@att.net</a>> wrote:<br> > Solution... don't use xcb_grab_pointer()<br> <br> So happy! just clickin' away :)<br> <br> But felt there is one lose end. I believe xcb_grab_pointer() reads <br> nearly as XGrabPointer(). If they're not suppose to be the same, maybe <br> a documentation update? If it's suppose to be the same, well....<br> <br> Not sure if this suffices as a bug notice or where it gets reported if <br> it is a bug.<br> Thank you.. click, click<br> Steve<br> <br> <br> </blockquote></div>