qt - How the event is propagated? -


i have main window. has central widget , docked tree widget. right click tree item, context menu pops up. right click somewhere in tree out of menu, mouse event generated. how mouse event propagate? begin menu? , ...?

if mouse button pressed, tree widget event, regardless of whether context menu open or not.


Comments

Post a Comment

Popular posts from this blog

javascript - RequestAnimationFrame not working when exiting fullscreen switching space on Safari -

request animation frame stops working when exiting fullscreen clicking on original space's safari window. fine if fullscreen mode canceled escape key or calling cancelfullscreen(). steps reproduce: open https://dl.dropboxusercontent.com/u/769042/prezi/safari-fullscreen.html click "draw raf", kittie appears click "fullscreen", go fullscreen click "draw raf", kittie appears go space original safari was, showing "click exit fullscreen mode", click anywhere, out fullscreen click "draw raf", nothing happens what handling click calling: window.requestanimationframe(draw); which draws on canvas context: function draw() { ctx.drawimage(img, math.random()*500|0, math.random()*400|0, 100, 100); } i checked .hidden , .visibilitystate, updated correctly. tested on osx 10.9.3, safari 7.0.4 (9537.76.4). has workaround/solution other switching old settimeout? this sounds webkit bug 88940 : using reque...
Read more

c++ - intel compiler error: no instance of overloaded function boost::put() -

i using intel compiler 13.0.1 , boost 1.52 following error when use boost::get() , boost::put() i use boost::adjacency_list<> graph type. properties assigned vertices. get() , put() functions fetch properties using boost::property_map <> interface. use custom properties define own struct property storage , corresponding tag property //g --> graph_t type //vd --> vertex //p --> property fetched graph object vertex vd (used auto c++11) // auto p = boost::get(propertytag(), g, vd); //fetch property using put. modify p (do anything) boost::put(propertytag(), g, vd, p) // update property using put when compile intel compiler, following error: error: no instance of overloaded function "boost::put" matches argument list argument types are: (propertytag, graph_t, const size_t, nodeinfo) boost::put(propertytag(), g, vd, p); ^ detected during: instantiation of ... note error comes boost::put() , not boost::get...
Read more

c++ - libcurl curl_easy_setopt "Unknown error" -

i'm trying use c++ curl library sending json data via put method , code looks this curl* m_curlhandle; curlcode m_returnvalue; //function1 start curl_global_init(curl_global_all); struct curl_slist* headers = null; std::ostringstream oss; struct curl_slist* slist = null; slist = curl_slist_append(headers, "accept: application/json"); slist = curl_slist_append(headers, "content-type: application/json"); slist = curl_slist_append(headers, "charsets: utf-8"); m_curlhandle = curl_easy_init(); if (!m_curlhandle) // throw exception curl_easy_setopt(m_curlhandle, curlopt_httpheader, headers); //function1 end //function2 start std::string url = "some url"; // url curl_easy_setopt(m_curlhandle, curlopt_url, url.c_str()); unsigned int timeout = 5; curl_easy_setopt(m_curlhandle, curlopt_timeout, timeout); std::string localip = "some ip"; // ip address curl_easy_setopt(m_curlhandle, curlopt_interface, localip.c_str()); curl_e...
Read more