{"id":1489,"date":"2012-03-09T10:30:24","date_gmt":"2012-03-09T02:30:24","guid":{"rendered":"https:\/\/www.csslayer.info\/wordpress\/?p=1489"},"modified":"2012-05-12T14:52:28","modified_gmt":"2012-05-12T06:52:28","slug":"why-gtk-apps-are-likely-to-suck-on-input-method","status":"publish","type":"post","link":"https:\/\/www.csslayer.info\/wordpress\/fcitx-dev\/why-gtk-apps-are-likely-to-suck-on-input-method\/","title":{"rendered":"\u4e3a\u4ec0\u4e48Gtk\u7a0b\u5e8f\u603b\u7231\u7ed9\u6211\u627e\u9ebb\u70e6"},"content":{"rendered":"<p><a href=\"http:\/\/code.google.com\/p\/fcitx\/issues\/detail?id=528\">http:\/\/code.google.com\/p\/fcitx\/issues\/detail?id=528<\/a><\/p>\n<p>\u8fd9\u662f\u8d77\u56e0\uff0c\u5f53\u7136\u94fa\u57ab\u8fd8\u6709\u5f88\u591a\uff0c\u6211\u5c31\u61d2\u5f97\u8bf4\u4e86\u3002<\/p>\n<p>Glib \u4f7f\u7528 C \u5b9e\u73b0 signal \u7684\u4e00\u4e2a\u7f3a\u9677\u3002\u5177\u4f53\u6765\u8bb2\u5c31\u662f\u8fd9\u4e48\u56de\u4e8b\uff0c\u5728glib\u91cc\u9762\uff0c\u5f88\u591a\u65f6\u5019\u5904\u7406signal\uff0c\u4e3a\u4e86\u901a\u7528\uff0c\u4ee5\u53ca\u80fd\u591f\u4f7f\u7528\u540c\u4e00\u4e2a\u51fd\u6570\u4f5c\u4e3asignal_connect\uff0c\u4e8e\u662f\u6240\u6709\u7684\u51fd\u6570\u6307\u9488\u90fd\u4f1a\u8f6c\u5316\u4e3a (void*)\uff08G_CALLBACK\uff09<\/p>\n<pre>\u00a0\u00a0\u00a0 g_signal_connect(context-&gt;slave,\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \"commit\",\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 G_CALLBACK(_slave_commit_cb),\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 context);<\/pre>\n<p>\u90a3\u4e48\u95ee\u9898\u5728\u4e8e\uff0c\u7f3a\u5c11\u5bf9 callback \u51fd\u6570\u7684\u5408\u6cd5\u6027\u9a8c\u8bc1\uff0c\u53ef\u80fd\u4f1a\u51fa\u73b0\u5404\u79cd\u6f5c\u5728\u7684\u95ee\u9898\u3002\u5728\u4e0d\u662f\u6709\u610f\u4e3a\u4e4b\u7684\u524d\u63d0\u4e0b\uff0c\u7a0b\u5e8f\u5458\u4ecd\u7136\u4f1a\u66f4\u5bb9\u6613\u72af\u9519\u8bef\u3002<\/p>\n<p>\u62ffpidgin\u91cc\u9762\u7684\u4e00\u4e2a\u95ee\u9898\u4e3e\u4f8b\uff0cpidgin\u7684\u72b6\u6001\u8f93\u5165\u6846\uff0c\u4e0d\u77e5\u9053\u6709\u6ca1\u6709\u4eba\u6ce8\u610f\u5230\uff0c\u5728\u91cc\u9762\u7528backspace\u548c\u8f93\u5165\u6cd5\u662f\u5f88\u4e0d\u6b63\u5e38\u7684\uff0c\u4f1a\u540c\u65f6\u5220\u6389\u8f93\u5165\u6cd5\u8fd9\u8fb9\u548cpidgin\u91cc\u9762\u4e24\u4e2a\u5b57\u7b26\u3002<\/p>\n<p>\u4e3a\u4ec0\u4e48\uff1f\u660e\u663e\u662f\u4e00\u4e2a\u6309\u952e\u4e8b\u4ef6\u88ab\u641e\u4e86\u4e24\u6b21\u3002<\/p>\n<p>\u6211\u7684\u4e00\u4e2a\u670b\u53cb\u82b1\u4e86\u4e00\u4e9b\u65f6\u95f4\u53bbdebug\u8fd9\u4e2a\u95ee\u9898\uff1a<\/p>\n<pre>Finally I traced it down to the problem.\r\n \u6211\u672c\u6765\u662f\u770b\u89c1\u8fd9\u4e48\u4e00\u884c\uff1a\r\ng_signal_connect(G_OBJECT(gtkconv-&gt;entry), \"key-release-event\",\r\n                 G_CALLBACK(gtk_conv_key_press_cb), NULL);\r\n\r\n\u53bb\u6389\u5c31\u6ca1\u4e8b\u4e86\u3002\r\n\u8fd9\u4e2a\u51fd\u6570\u5982\u4e0b\uff1a\r\nstatic void gtk_conv_key_press_cb(GtkWidget *tv, GdkEventKey *event,\r\ngpointer data)\r\n{\r\n\u00a0 \u00a0 \u00a0 \u00a0gboolean togglemenus = purple_prefs_get_bool(PREF_TOGGLE_MENUS);\r\n\u00a0 \u00a0 \u00a0 \u00a0gboolean enabled = purple_prefs_get_bool(PREF_ENABLED);\r\n\r\n\u00a0 \u00a0 \u00a0\u00a0 if(enabled &amp;&amp; togglemenus){\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0if(event-&gt;state &amp; GDK_CONTROL_MASK){\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0if(event-&gt;keyval == GDK_F11){\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0ToggleConvMenu();\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0}\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0}\r\n\u00a0 \u00a0 \u00a0 \u00a0}\r\n}<\/pre>\n<p>\u597d\u5427\uff0c\u770b\u8d77\u6765\u5f88\u6b63\u5e38\u5417\uff1f\u7f16\u8bd1\u5668\u90fd\u4f1a\u5f88happy\u7684\u8fdewarning\u90fd\u6ca1\u6709\u5c31run\u8fc7\u53bb\u4e86\u3002<\/p>\n<p>\u4f46\u662f\u5b9e\u9645\u4e0akey-release-event\u7684\u8fd4\u56de\u503c\u662fgboolean\u3002<\/p>\n<p>\u4e8e\u662f\u4eba\u6c11\u7fa4\u4f17\u559c\u95fb\u4e50\u89c1\u7684\u8f93\u5165\u6cd5bug\u6765\u4e86\u3002\u8fd9\u4e2a\u51fd\u6570\u672c\u6765\u5e94\u5f53\u63d0\u4f9b\u8fd4\u56de\u503c\uff0c\u4f46\u662f\u6ca1\u6709\u63d0\u4f9b\uff0c\u5728c\u91cc\u9762\u8fd9\u4e2a\u6307\u9488\u5728\u6ce8\u518c\u7684\u65f6\u5019\u662f\u6ca1\u6709\u7ecf\u8fc7\u7c7b\u578b\u68c0\u67e5\u7684\uff0c\u4e8e\u662f\u51fa\u73b0\u4e86\u4e00\u4e2a\u672c\u4e0d\u5e94\u5f53\u6ce8\u518c\u7684\u51fd\u6570\u3002\u4f46\u662f\u5728\u8c03\u7528\u7684\u65f6\u5019\uff0c\u5176\u5b9e\u662f\u9884\u7559\u4e86\u8fd4\u56de\u503c\u7684\u4f4d\u7f6e\uff08\u7531\u7f16\u8bd1\u5668\uff09\uff0c\u6240\u4ee5\u4e0d\u4f1a\u51fa\u73b0\u5bfc\u81f4crash\u7684\u9519\u8bef\uff0c\u4f46\u662f\u4f9d\u7136\u4f1a\u5bfc\u81f4\u8fd9\u4e2a\u8fd4\u56de\u503c\u51fa\u4e8e\u672a\u5b9a\u4e49\u72b6\u6001\u3002<\/p>\n<p>\u597d\u5427\uff0c\u90a3\u4e48\u5f53\u5e74scim\u548cibus\u4e3a\u4e86\u4ece\u6e90\u5934\u5e72\u6389\u8fd9\u4e9b<del>\u4e2d\u4f4e\u6c34\u5e73\u7a0b\u5e8f\u5458<\/del>\u95ee\u9898\uff0c\u4e8e\u662f\u7528\u4e86gtk_key_snooper\uff0c\u4f7f\u5f97\u6240\u6709gtk\u7a0b\u5e8f\u7684\u6309\u952e\u4e8b\u4ef6\u5148\u4eceim module\u8fd9\u8fb9\u8d70\u4e00\u5708\uff0c\u7136\u540e\u624d\u4f1a\u4e22\u56de\u7ed9\u7a0b\u5e8f\u3002\u4e8e\u662f\u4eca\u5929\u6211\u4e5f\u7ed9fcitx\u52a0\u4e86key snooper\uff08\u8981\u4e0d\u7136\u771f\u6ca1\u6cd5\u6d3b\u4e86\uff09\uff0c\u6211\u672c\u6765\u5bf9\u4e8e\u7a0b\u5e8f\u548c\u8f93\u5165\u6cd5\u4e4b\u95f4\u7684\u89c2\u70b9\u662f\uff0c\u7a0b\u5e8f\u5e94\u8be5\u4fdd\u6301\u884c\u4e3a\u6b63\u5e38\uff0c\u8f93\u5165\u6cd5\u5c3d\u91cf\u4e0d\u5e72\u9884\uff0c\u5373\u4f7f\u6211\u5728\u6700\u521d\u5b9e\u73b0fcitx\u7684gtk\u7684im module\u7684\u65f6\u5019\u53ef\u4ee5\u5b9e\u73b0\u5b83\uff0c\u6211\u8fd8\u662f\u6ca1\u53bb\u7528\uff0c\u4e0d\u8fc7gtk\u7a0b\u5e8f\u4eec\u62b1\u6b49\u4e86\uff0c\u5982\u679c\u4f60\u4eec\u5f53\u4e2d\u8fdegedit\u8fd9\u79cd\u8d27\u8272\u90fd\u6562\u6765\u60f9\u6211\uff0c\u6211\u6ca1\u7406\u7531\u4e0d\u76f8\u4fe1\u7c7b\u4f3c\u60c5\u51b5\u662f\u5728gtk\u7a0b\u5e8f\u4e2d\u666e\u904d\u5b58\u5728\u7684\uff0c\u662f\u4f60\u4eec\u5148\u6765\u60f9\u6211\u7684\u3002<\/p>\n<p>\u4f46\u8f93\u5165\u6cd5\u672c\u6765\u63d0\u4f9b\u7684\u63a5\u53e3\u53ea\u6709imcontext\u90a3\u4e9b\uff0c\u8fd9\u4e5f\u5c31\u662f\u611f\u8c22\u4e0a\u82cd\u8fd8\u80af\u7ed9\u8f93\u5165\u6cd5\u4e2a\u6d3b\u8def\u3002\u4f46\u662f\u4e00\u4e2abug\u5373\u4f7fworkaround\u6389\u4e86\uff0c\u8fd8\u662f\u4e00\u4e2abug\u3002\u5982\u540c\u836f\u7247\u88f9\u4e86\u7cd6\u8863\uff0c\u5b83\u8fd8\u662f\u836f\u7247\uff0c\u53ea\u4e0d\u8fc7\u2026\u2026\u55ef\uff0c\u6ca1\u90a3\u4e48\u96be\u5403\u7f62\u4e86\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>http:\/\/code.google.com\/p\/fcitx\/issues\/detail?id=528 \u8fd9\u662f\u8d77\u56e0\uff0c\u5f53\u7136\u94fa\u57ab\u8fd8\u6709\u5f88\u591a\uff0c\u6211\u5c31\u61d2\u5f97\u8bf4\u4e86\u3002 Glib \u4f7f\u7528 C \u5b9e\u73b0 signal \u7684\u4e00\u4e2a\u7f3a\u9677\u3002\u5177\u4f53\u6765\u8bb2\u5c31\u662f\u8fd9\u4e48\u56de\u4e8b\uff0c\u5728glib\u91cc\u9762\uff0c\u5f88\u591a\u65f6\u5019\u5904\u7406signal\uff0c\u4e3a\u4e86\u901a\u7528\uff0c\u4ee5\u53ca\u80fd\u591f\u4f7f\u7528\u540c\u4e00\u4e2a\u51fd\u6570\u4f5c\u4e3asignal_connect\uff0c\u4e8e\u662f\u6240\u6709\u7684\u51fd\u6570\u6307\u9488\u90fd\u4f1a\u8f6c\u5316\u4e3a (void*)\uff08G_CALLBACK\uff09 \u00a0\u00a0\u00a0 g_signal_connect(context-&gt;slave, \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 &#8220;commit&#8221;, \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 G_CALLBACK(_slave_commit_cb), \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 context); \u90a3\u4e48\u95ee\u9898\u5728\u4e8e\uff0c\u7f3a\u5c11\u5bf9 callback \u51fd\u6570\u7684\u5408\u6cd5\u6027\u9a8c\u8bc1\uff0c\u53ef\u80fd\u4f1a\u51fa\u73b0\u5404\u79cd\u6f5c\u5728\u7684\u95ee\u9898\u3002\u5728\u4e0d\u662f\u6709\u610f\u4e3a\u4e4b\u7684\u524d\u63d0\u4e0b\uff0c\u7a0b\u5e8f\u5458\u4ecd\u7136\u4f1a\u66f4\u5bb9\u6613\u72af\u9519\u8bef\u3002 \u62ffpidgin\u91cc\u9762\u7684\u4e00\u4e2a\u95ee\u9898\u4e3e\u4f8b\uff0cpidgin\u7684\u72b6\u6001\u8f93\u5165\u6846\uff0c\u4e0d\u77e5\u9053\u6709\u6ca1\u6709\u4eba\u6ce8\u610f\u5230\uff0c\u5728\u91cc\u9762\u7528backspace\u548c\u8f93\u5165\u6cd5\u662f\u5f88\u4e0d\u6b63\u5e38\u7684\uff0c\u4f1a\u540c\u65f6\u5220\u6389\u8f93\u5165\u6cd5\u8fd9\u8fb9\u548cpidgin\u91cc\u9762\u4e24\u4e2a\u5b57\u7b26\u3002 \u4e3a\u4ec0\u4e48\uff1f\u660e\u663e\u662f\u4e00\u4e2a\u6309\u952e\u4e8b\u4ef6\u88ab\u641e\u4e86\u4e24\u6b21\u3002 \u6211\u7684\u4e00\u4e2a\u670b\u53cb\u82b1\u4e86\u4e00\u4e9b\u65f6\u95f4\u53bbdebug\u8fd9\u4e2a\u95ee\u9898\uff1a Finally I traced it down to the problem. \u6211\u672c\u6765\u662f\u770b\u89c1\u8fd9\u4e48\u4e00\u884c\uff1a g_signal_connect(G_OBJECT(gtkconv-&gt;entry), &#8220;key-release-event&#8221;, G_CALLBACK(gtk_conv_key_press_cb), NULL); \u53bb\u6389\u5c31\u6ca1\u4e8b\u4e86\u3002 \u8fd9\u4e2a\u51fd\u6570\u5982\u4e0b\uff1a static void &hellip; <a href=\"https:\/\/www.csslayer.info\/wordpress\/fcitx-dev\/why-gtk-apps-are-likely-to-suck-on-input-method\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[44],"tags":[],"class_list":["post-1489","post","type-post","status-publish","format-standard","hentry","category-fcitx-dev"],"_links":{"self":[{"href":"https:\/\/www.csslayer.info\/wordpress\/wp-json\/wp\/v2\/posts\/1489","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.csslayer.info\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.csslayer.info\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.csslayer.info\/wordpress\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.csslayer.info\/wordpress\/wp-json\/wp\/v2\/comments?post=1489"}],"version-history":[{"count":3,"href":"https:\/\/www.csslayer.info\/wordpress\/wp-json\/wp\/v2\/posts\/1489\/revisions"}],"predecessor-version":[{"id":1578,"href":"https:\/\/www.csslayer.info\/wordpress\/wp-json\/wp\/v2\/posts\/1489\/revisions\/1578"}],"wp:attachment":[{"href":"https:\/\/www.csslayer.info\/wordpress\/wp-json\/wp\/v2\/media?parent=1489"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.csslayer.info\/wordpress\/wp-json\/wp\/v2\/categories?post=1489"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.csslayer.info\/wordpress\/wp-json\/wp\/v2\/tags?post=1489"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}