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< h1 id = "ui-file-for-menu-and-action-entries" > Ui file for menu and action entries< / h1 >
< h2 id = "ui-file-for-menu" > Ui file for menu< / h2 >
< p > You might have thought that building menus is really bothersome. Yes, the program was complicated and it needs lots of time to code it. The situation is similar to building widgets. When we built widgets, using ui file was a good way to avoid such complicated coding. The same goes for menus.< / p >
< p > The ui file for menus has interface, menu tags. The file starts and ends with interface tag.< / p >
< div class = "sourceCode" id = "cb1" > < pre class = "sourceCode xml" > < code class = "sourceCode xml" > < span id = "cb1-1" > < a href = "#cb1-1" aria-hidden = "true" > < / a > < span class = "kw" > < interface> < / span > < / span >
< span id = "cb1-2" > < a href = "#cb1-2" aria-hidden = "true" > < / a > < span class = "kw" > < menu< / span > < span class = "ot" > id=< / span > < span class = "st" > " menubar" < / span > < span class = "kw" > > < / span > < / span >
< span id = "cb1-3" > < a href = "#cb1-3" aria-hidden = "true" > < / a > < span class = "kw" > < /menu> < / span > < / span >
< span id = "cb1-4" > < a href = "#cb1-4" aria-hidden = "true" > < / a > < span class = "kw" > < /interface> < / span > < / span > < / code > < / pre > < / div >
< p > < code > menu< / code > tag corresponds to GMenu object. < code > id< / code > attribute defines the name of the object. It will be referred by GtkBuilder.< / p >
< div class = "sourceCode" id = "cb2" > < pre class = "sourceCode xml" > < code class = "sourceCode xml" > < span id = "cb2-1" > < a href = "#cb2-1" aria-hidden = "true" > < / a > < span class = "kw" > < submenu> < / span > < / span >
< span id = "cb2-2" > < a href = "#cb2-2" aria-hidden = "true" > < / a > < span class = "kw" > < attribute< / span > < span class = "ot" > name=< / span > < span class = "st" > " label" < / span > < span class = "kw" > > < / span > File< span class = "kw" > < /attribute> < / span > < / span >
< span id = "cb2-3" > < a href = "#cb2-3" aria-hidden = "true" > < / a > < span class = "kw" > < item> < / span > < / span >
< span id = "cb2-4" > < a href = "#cb2-4" aria-hidden = "true" > < / a > < span class = "kw" > < attribute< / span > < span class = "ot" > name=< / span > < span class = "st" > " label" < / span > < span class = "kw" > > < / span > New< span class = "kw" > < /attribute> < / span > < / span >
< span id = "cb2-5" > < a href = "#cb2-5" aria-hidden = "true" > < / a > < span class = "kw" > < attribute< / span > < span class = "ot" > name=< / span > < span class = "st" > " action" < / span > < span class = "kw" > > < / span > win.new< span class = "kw" > < /attribute> < / span > < / span >
< span id = "cb2-6" > < a href = "#cb2-6" aria-hidden = "true" > < / a > < span class = "kw" > < /item> < / span > < / span >
< span id = "cb2-7" > < a href = "#cb2-7" aria-hidden = "true" > < / a > < span class = "kw" > < /submenu> < / span > < / span > < / code > < / pre > < / div >
< p > < code > item< / code > tag corresponds to item in GMenu which has the same structure as GMenuItem. The item above has a label attribute. Its value is “New”. The item also has an action attribute and its value is “win.new”. “win” is a prefix and “new” is an action name. < code > submenu< / code > tag corresponds to both GMenuItem and GMenu. The GMenuItem has a link to GMenu.< / p >
< p > The ui file above can be described as follows.< / p >
< div class = "sourceCode" id = "cb3" > < pre class = "sourceCode xml" > < code class = "sourceCode xml" > < span id = "cb3-1" > < a href = "#cb3-1" aria-hidden = "true" > < / a > < span class = "kw" > < item> < / span > < / span >
< span id = "cb3-2" > < a href = "#cb3-2" aria-hidden = "true" > < / a > < span class = "kw" > < attribute< / span > < span class = "ot" > name=< / span > < span class = "st" > " label" < / span > < span class = "kw" > > < / span > File< span class = "kw" > < /attribute> < / span > < / span >
< span id = "cb3-3" > < a href = "#cb3-3" aria-hidden = "true" > < / a > < span class = "kw" > < link< / span > < span class = "ot" > name=< / span > < span class = "st" > " submenu" < / span > < span class = "kw" > > < / span > < / span >
< span id = "cb3-4" > < a href = "#cb3-4" aria-hidden = "true" > < / a > < span class = "kw" > < item> < / span > < / span >
< span id = "cb3-5" > < a href = "#cb3-5" aria-hidden = "true" > < / a > < span class = "kw" > < attribute< / span > < span class = "ot" > name=< / span > < span class = "st" > " label" < / span > < span class = "kw" > > < / span > New< span class = "kw" > < /attribute> < / span > < / span >
< span id = "cb3-6" > < a href = "#cb3-6" aria-hidden = "true" > < / a > < span class = "kw" > < attribute< / span > < span class = "ot" > name=< / span > < span class = "st" > " action" < / span > < span class = "kw" > > < / span > win.new< span class = "kw" > < /attribute> < / span > < / span >
< span id = "cb3-7" > < a href = "#cb3-7" aria-hidden = "true" > < / a > < span class = "kw" > < /item> < / span > < / span >
< span id = "cb3-8" > < a href = "#cb3-8" aria-hidden = "true" > < / a > < span class = "kw" > < /link> < / span > < / span >
< span id = "cb3-9" > < a href = "#cb3-9" aria-hidden = "true" > < / a > < span class = "kw" > < /item> < / span > < / span > < / code > < / pre > < / div >
< p > < code > link< / code > tag expresses the link to submenu. And at the same time it also expresses the submenu itself. This file illustrates the relationship between the menus and items better than the prior ui file. But < code > submenu< / code > tag is simple and easy to understand. So, we usually prefer the former ui file style.< / p >
< p > The following is a screenshot of the sample program in this section. Its name is < code > menu3< / code > .< / p >
< figure >
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< img src = "image/menu3.png" alt = "" / > < figcaption > menu3< / figcaption >
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< / figure >
< p > The following is the ui file of the menu in < code > menu3< / code > .< / p >
< div class = "sourceCode" id = "cb4" > < pre class = "sourceCode numberSource xml numberLines" > < code class = "sourceCode xml" > < span id = "cb4-1" > < a href = "#cb4-1" > < / a > < span class = "kw" > < ?xml< / span > version=" 1.0" encoding=" UTF-8" < span class = "kw" > ?> < / span > < / span >
< span id = "cb4-2" > < a href = "#cb4-2" > < / a > < span class = "kw" > < interface> < / span > < / span >
< span id = "cb4-3" > < a href = "#cb4-3" > < / a > < span class = "kw" > < menu< / span > < span class = "ot" > id=< / span > < span class = "st" > " menubar" < / span > < span class = "kw" > > < / span > < / span >
< span id = "cb4-4" > < a href = "#cb4-4" > < / a > < span class = "kw" > < submenu> < / span > < / span >
< span id = "cb4-5" > < a href = "#cb4-5" > < / a > < span class = "kw" > < attribute< / span > < span class = "ot" > name=< / span > < span class = "st" > " label" < / span > < span class = "kw" > > < / span > File< span class = "kw" > < /attribute> < / span > < / span >
< span id = "cb4-6" > < a href = "#cb4-6" > < / a > < span class = "kw" > < section> < / span > < / span >
< span id = "cb4-7" > < a href = "#cb4-7" > < / a > < span class = "kw" > < item> < / span > < / span >
< span id = "cb4-8" > < a href = "#cb4-8" > < / a > < span class = "kw" > < attribute< / span > < span class = "ot" > name=< / span > < span class = "st" > " label" < / span > < span class = "kw" > > < / span > New< span class = "kw" > < /attribute> < / span > < / span >
< span id = "cb4-9" > < a href = "#cb4-9" > < / a > < span class = "kw" > < attribute< / span > < span class = "ot" > name=< / span > < span class = "st" > " action" < / span > < span class = "kw" > > < / span > win.new< span class = "kw" > < /attribute> < / span > < / span >
< span id = "cb4-10" > < a href = "#cb4-10" > < / a > < span class = "kw" > < /item> < / span > < / span >
< span id = "cb4-11" > < a href = "#cb4-11" > < / a > < span class = "kw" > < item> < / span > < / span >
< span id = "cb4-12" > < a href = "#cb4-12" > < / a > < span class = "kw" > < attribute< / span > < span class = "ot" > name=< / span > < span class = "st" > " label" < / span > < span class = "kw" > > < / span > Open< span class = "kw" > < /attribute> < / span > < / span >
< span id = "cb4-13" > < a href = "#cb4-13" > < / a > < span class = "kw" > < attribute< / span > < span class = "ot" > name=< / span > < span class = "st" > " action" < / span > < span class = "kw" > > < / span > win.open< span class = "kw" > < /attribute> < / span > < / span >
< span id = "cb4-14" > < a href = "#cb4-14" > < / a > < span class = "kw" > < /item> < / span > < / span >
< span id = "cb4-15" > < a href = "#cb4-15" > < / a > < span class = "kw" > < /section> < / span > < / span >
< span id = "cb4-16" > < a href = "#cb4-16" > < / a > < span class = "kw" > < section> < / span > < / span >
< span id = "cb4-17" > < a href = "#cb4-17" > < / a > < span class = "kw" > < item> < / span > < / span >
< span id = "cb4-18" > < a href = "#cb4-18" > < / a > < span class = "kw" > < attribute< / span > < span class = "ot" > name=< / span > < span class = "st" > " label" < / span > < span class = "kw" > > < / span > Save< span class = "kw" > < /attribute> < / span > < / span >
< span id = "cb4-19" > < a href = "#cb4-19" > < / a > < span class = "kw" > < attribute< / span > < span class = "ot" > name=< / span > < span class = "st" > " action" < / span > < span class = "kw" > > < / span > win.save< span class = "kw" > < /attribute> < / span > < / span >
< span id = "cb4-20" > < a href = "#cb4-20" > < / a > < span class = "kw" > < /item> < / span > < / span >
< span id = "cb4-21" > < a href = "#cb4-21" > < / a > < span class = "kw" > < item> < / span > < / span >
< span id = "cb4-22" > < a href = "#cb4-22" > < / a > < span class = "kw" > < attribute< / span > < span class = "ot" > name=< / span > < span class = "st" > " label" < / span > < span class = "kw" > > < / span > Save As…< span class = "kw" > < /attribute> < / span > < / span >
< span id = "cb4-23" > < a href = "#cb4-23" > < / a > < span class = "kw" > < attribute< / span > < span class = "ot" > name=< / span > < span class = "st" > " action" < / span > < span class = "kw" > > < / span > win.saveas< span class = "kw" > < /attribute> < / span > < / span >
< span id = "cb4-24" > < a href = "#cb4-24" > < / a > < span class = "kw" > < /item> < / span > < / span >
< span id = "cb4-25" > < a href = "#cb4-25" > < / a > < span class = "kw" > < /section> < / span > < / span >
< span id = "cb4-26" > < a href = "#cb4-26" > < / a > < span class = "kw" > < section> < / span > < / span >
< span id = "cb4-27" > < a href = "#cb4-27" > < / a > < span class = "kw" > < item> < / span > < / span >
< span id = "cb4-28" > < a href = "#cb4-28" > < / a > < span class = "kw" > < attribute< / span > < span class = "ot" > name=< / span > < span class = "st" > " label" < / span > < span class = "kw" > > < / span > Close< span class = "kw" > < /attribute> < / span > < / span >
< span id = "cb4-29" > < a href = "#cb4-29" > < / a > < span class = "kw" > < attribute< / span > < span class = "ot" > name=< / span > < span class = "st" > " action" < / span > < span class = "kw" > > < / span > win.close< span class = "kw" > < /attribute> < / span > < / span >
< span id = "cb4-30" > < a href = "#cb4-30" > < / a > < span class = "kw" > < /item> < / span > < / span >
< span id = "cb4-31" > < a href = "#cb4-31" > < / a > < span class = "kw" > < /section> < / span > < / span >
< span id = "cb4-32" > < a href = "#cb4-32" > < / a > < span class = "kw" > < section> < / span > < / span >
< span id = "cb4-33" > < a href = "#cb4-33" > < / a > < span class = "kw" > < item> < / span > < / span >
< span id = "cb4-34" > < a href = "#cb4-34" > < / a > < span class = "kw" > < attribute< / span > < span class = "ot" > name=< / span > < span class = "st" > " label" < / span > < span class = "kw" > > < / span > Quit< span class = "kw" > < /attribute> < / span > < / span >
< span id = "cb4-35" > < a href = "#cb4-35" > < / a > < span class = "kw" > < attribute< / span > < span class = "ot" > name=< / span > < span class = "st" > " action" < / span > < span class = "kw" > > < / span > app.quit< span class = "kw" > < /attribute> < / span > < / span >
< span id = "cb4-36" > < a href = "#cb4-36" > < / a > < span class = "kw" > < /item> < / span > < / span >
< span id = "cb4-37" > < a href = "#cb4-37" > < / a > < span class = "kw" > < /section> < / span > < / span >
< span id = "cb4-38" > < a href = "#cb4-38" > < / a > < span class = "kw" > < /submenu> < / span > < / span >
< span id = "cb4-39" > < a href = "#cb4-39" > < / a > < span class = "kw" > < submenu> < / span > < / span >
< span id = "cb4-40" > < a href = "#cb4-40" > < / a > < span class = "kw" > < attribute< / span > < span class = "ot" > name=< / span > < span class = "st" > " label" < / span > < span class = "kw" > > < / span > Edit< span class = "kw" > < /attribute> < / span > < / span >
< span id = "cb4-41" > < a href = "#cb4-41" > < / a > < span class = "kw" > < section> < / span > < / span >
< span id = "cb4-42" > < a href = "#cb4-42" > < / a > < span class = "kw" > < item> < / span > < / span >
< span id = "cb4-43" > < a href = "#cb4-43" > < / a > < span class = "kw" > < attribute< / span > < span class = "ot" > name=< / span > < span class = "st" > " label" < / span > < span class = "kw" > > < / span > Cut< span class = "kw" > < /attribute> < / span > < / span >
< span id = "cb4-44" > < a href = "#cb4-44" > < / a > < span class = "kw" > < attribute< / span > < span class = "ot" > name=< / span > < span class = "st" > " action" < / span > < span class = "kw" > > < / span > win.cut< span class = "kw" > < /attribute> < / span > < / span >
< span id = "cb4-45" > < a href = "#cb4-45" > < / a > < span class = "kw" > < /item> < / span > < / span >
< span id = "cb4-46" > < a href = "#cb4-46" > < / a > < span class = "kw" > < item> < / span > < / span >
< span id = "cb4-47" > < a href = "#cb4-47" > < / a > < span class = "kw" > < attribute< / span > < span class = "ot" > name=< / span > < span class = "st" > " label" < / span > < span class = "kw" > > < / span > Copy< span class = "kw" > < /attribute> < / span > < / span >
< span id = "cb4-48" > < a href = "#cb4-48" > < / a > < span class = "kw" > < attribute< / span > < span class = "ot" > name=< / span > < span class = "st" > " action" < / span > < span class = "kw" > > < / span > win.copy< span class = "kw" > < /attribute> < / span > < / span >
< span id = "cb4-49" > < a href = "#cb4-49" > < / a > < span class = "kw" > < /item> < / span > < / span >
< span id = "cb4-50" > < a href = "#cb4-50" > < / a > < span class = "kw" > < item> < / span > < / span >
< span id = "cb4-51" > < a href = "#cb4-51" > < / a > < span class = "kw" > < attribute< / span > < span class = "ot" > name=< / span > < span class = "st" > " label" < / span > < span class = "kw" > > < / span > Paste< span class = "kw" > < /attribute> < / span > < / span >
< span id = "cb4-52" > < a href = "#cb4-52" > < / a > < span class = "kw" > < attribute< / span > < span class = "ot" > name=< / span > < span class = "st" > " action" < / span > < span class = "kw" > > < / span > win.paste< span class = "kw" > < /attribute> < / span > < / span >
< span id = "cb4-53" > < a href = "#cb4-53" > < / a > < span class = "kw" > < /item> < / span > < / span >
< span id = "cb4-54" > < a href = "#cb4-54" > < / a > < span class = "kw" > < /section> < / span > < / span >
< span id = "cb4-55" > < a href = "#cb4-55" > < / a > < span class = "kw" > < section> < / span > < / span >
< span id = "cb4-56" > < a href = "#cb4-56" > < / a > < span class = "kw" > < item> < / span > < / span >
< span id = "cb4-57" > < a href = "#cb4-57" > < / a > < span class = "kw" > < attribute< / span > < span class = "ot" > name=< / span > < span class = "st" > " label" < / span > < span class = "kw" > > < / span > Select All< span class = "kw" > < /attribute> < / span > < / span >
< span id = "cb4-58" > < a href = "#cb4-58" > < / a > < span class = "kw" > < attribute< / span > < span class = "ot" > name=< / span > < span class = "st" > " action" < / span > < span class = "kw" > > < / span > win.selectall< span class = "kw" > < /attribute> < / span > < / span >
< span id = "cb4-59" > < a href = "#cb4-59" > < / a > < span class = "kw" > < /item> < / span > < / span >
< span id = "cb4-60" > < a href = "#cb4-60" > < / a > < span class = "kw" > < /section> < / span > < / span >
< span id = "cb4-61" > < a href = "#cb4-61" > < / a > < span class = "kw" > < /submenu> < / span > < / span >
< span id = "cb4-62" > < a href = "#cb4-62" > < / a > < span class = "kw" > < submenu> < / span > < / span >
< span id = "cb4-63" > < a href = "#cb4-63" > < / a > < span class = "kw" > < attribute< / span > < span class = "ot" > name=< / span > < span class = "st" > " label" < / span > < span class = "kw" > > < / span > View< span class = "kw" > < /attribute> < / span > < / span >
< span id = "cb4-64" > < a href = "#cb4-64" > < / a > < span class = "kw" > < section> < / span > < / span >
< span id = "cb4-65" > < a href = "#cb4-65" > < / a > < span class = "kw" > < item> < / span > < / span >
< span id = "cb4-66" > < a href = "#cb4-66" > < / a > < span class = "kw" > < attribute< / span > < span class = "ot" > name=< / span > < span class = "st" > " label" < / span > < span class = "kw" > > < / span > Full Screen< span class = "kw" > < /attribute> < / span > < / span >
< span id = "cb4-67" > < a href = "#cb4-67" > < / a > < span class = "kw" > < attribute< / span > < span class = "ot" > name=< / span > < span class = "st" > " action" < / span > < span class = "kw" > > < / span > win.fullscreen< span class = "kw" > < /attribute> < / span > < / span >
< span id = "cb4-68" > < a href = "#cb4-68" > < / a > < span class = "kw" > < /item> < / span > < / span >
< span id = "cb4-69" > < a href = "#cb4-69" > < / a > < span class = "kw" > < /section> < / span > < / span >
< span id = "cb4-70" > < a href = "#cb4-70" > < / a > < span class = "kw" > < /submenu> < / span > < / span >
< span id = "cb4-71" > < a href = "#cb4-71" > < / a > < span class = "kw" > < /menu> < / span > < / span >
< span id = "cb4-72" > < a href = "#cb4-72" > < / a > < span class = "kw" > < /interface> < / span > < / span > < / code > < / pre > < / div >
< p > The ui file is converted to the resource by the resource compiler < code > glib-compile-resouces< / code > with xml file below.< / p >
< div class = "sourceCode" id = "cb5" > < pre class = "sourceCode numberSource xml numberLines" > < code class = "sourceCode xml" > < span id = "cb5-1" > < a href = "#cb5-1" > < / a > < span class = "kw" > < ?xml< / span > version=" 1.0" encoding=" UTF-8" < span class = "kw" > ?> < / span > < / span >
< span id = "cb5-2" > < a href = "#cb5-2" > < / a > < span class = "kw" > < gresources> < / span > < / span >
< span id = "cb5-3" > < a href = "#cb5-3" > < / a > < span class = "kw" > < gresource< / span > < span class = "ot" > prefix=< / span > < span class = "st" > " /com/github/ToshioCP/menu3" < / span > < span class = "kw" > > < / span > < / span >
< span id = "cb5-4" > < a href = "#cb5-4" > < / a > < span class = "kw" > < file> < / span > menu3.ui< span class = "kw" > < /file> < / span > < / span >
< span id = "cb5-5" > < a href = "#cb5-5" > < / a > < span class = "kw" > < /gresource> < / span > < / span >
< span id = "cb5-6" > < a href = "#cb5-6" > < / a > < span class = "kw" > < /gresources> < / span > < / span > < / code > < / pre > < / div >
< p > GtkBuilder builds menus from the resource.< / p >
< div class = "sourceCode" id = "cb6" > < pre class = "sourceCode c" > < code class = "sourceCode c" > < span id = "cb6-1" > < a href = "#cb6-1" aria-hidden = "true" > < / a > GtkBuilder *builder = gtk_builder_new_from_resource (< span class = "st" > " /com/github/ToshioCP/menu3/menu3.ui" < / span > );< / span >
< span id = "cb6-2" > < a href = "#cb6-2" aria-hidden = "true" > < / a > GMenuModel *menubar = G_MENU_MODEL (gtk_builder_get_object (builder, < span class = "st" > " menubar" < / span > ));< / span >
< span id = "cb6-3" > < a href = "#cb6-3" aria-hidden = "true" > < / a > < / span >
< span id = "cb6-4" > < a href = "#cb6-4" aria-hidden = "true" > < / a > gtk_application_set_menubar (GTK_APPLICATION (app), menubar);< / span >
< span id = "cb6-5" > < a href = "#cb6-5" aria-hidden = "true" > < / a > g_object_unref (builder);< / span > < / code > < / pre > < / div >
< p > It is important that < code > builder< / code > is unreferred after the GMenuModel < code > menubar< / code > is inserted to the application. If you do it before setting, bad thing will happen – < / p >
< h2 id = "action-entry" > Action entry< / h2 >
< p > The coding for building actions and signal handlers is bothersome work as well. Therefore, it should be automated. You can implement them easily with GActionEntry structure and < code > g_action_map_add_action_entries< / code > function.< / p >
< p > GActionEntry contains action name, signal handlers, parameter and state.< / p >
< div class = "sourceCode" id = "cb7" > < pre class = "sourceCode c" > < code class = "sourceCode c" > < span id = "cb7-1" > < a href = "#cb7-1" aria-hidden = "true" > < / a > < span class = "kw" > typedef< / span > < span class = "kw" > struct< / span > _GActionEntry GActionEntry;< / span >
< span id = "cb7-2" > < a href = "#cb7-2" aria-hidden = "true" > < / a > < / span >
< span id = "cb7-3" > < a href = "#cb7-3" aria-hidden = "true" > < / a > < span class = "kw" > struct< / span > _GActionEntry< / span >
< span id = "cb7-4" > < a href = "#cb7-4" aria-hidden = "true" > < / a > {< / span >
< span id = "cb7-5" > < a href = "#cb7-5" aria-hidden = "true" > < / a > < span class = "co" > /* action name */< / span > < / span >
< span id = "cb7-6" > < a href = "#cb7-6" aria-hidden = "true" > < / a > < span class = "dt" > const< / span > gchar *name;< / span >
< span id = "cb7-7" > < a href = "#cb7-7" aria-hidden = "true" > < / a > < span class = "co" > /* activate handler */< / span > < / span >
< span id = "cb7-8" > < a href = "#cb7-8" aria-hidden = "true" > < / a > < span class = "dt" > void< / span > (* activate) (GSimpleAction *action, GVariant *parameter, gpointer user_data);< / span >
< span id = "cb7-9" > < a href = "#cb7-9" aria-hidden = "true" > < / a > < span class = "co" > /* the type of the parameter given as a single GVariant type string */< / span > < / span >
< span id = "cb7-10" > < a href = "#cb7-10" aria-hidden = "true" > < / a > < span class = "dt" > const< / span > gchar *parameter_type;< / span >
< span id = "cb7-11" > < a href = "#cb7-11" aria-hidden = "true" > < / a > < span class = "co" > /* initial state given in GVariant text format */< / span > < / span >
< span id = "cb7-12" > < a href = "#cb7-12" aria-hidden = "true" > < / a > < span class = "dt" > const< / span > gchar *state;< / span >
< span id = "cb7-13" > < a href = "#cb7-13" aria-hidden = "true" > < / a > < span class = "co" > /* change-state handler */< / span > < / span >
< span id = "cb7-14" > < a href = "#cb7-14" aria-hidden = "true" > < / a > < span class = "dt" > void< / span > (* change_state) (GSimpleAction *action, GVariant *value, gpointer user_data);< / span >
< span id = "cb7-15" > < a href = "#cb7-15" aria-hidden = "true" > < / a > < span class = "co" > /*< private > */< / span > < / span >
< span id = "cb7-16" > < a href = "#cb7-16" aria-hidden = "true" > < / a > gsize padding[< span class = "dv" > 3< / span > ];< / span >
< span id = "cb7-17" > < a href = "#cb7-17" aria-hidden = "true" > < / a > };< / span > < / code > < / pre > < / div >
< p > For example, the actions in the previous section are:< / p >
< div class = "sourceCode" id = "cb8" > < pre class = "sourceCode c" > < code class = "sourceCode c" > < span id = "cb8-1" > < a href = "#cb8-1" aria-hidden = "true" > < / a > { < span class = "st" > " fullscreen" < / span > , NULL, NULL, < span class = "st" > " false" < / span > , fullscreen_changed }< / span >
< span id = "cb8-2" > < a href = "#cb8-2" aria-hidden = "true" > < / a > { < span class = "st" > " color" < / span > , color_activated, < span class = "st" > " s" < / span > , < span class = "st" > " red" < / span > , NULL }< / span >
< span id = "cb8-3" > < a href = "#cb8-3" aria-hidden = "true" > < / a > { < span class = "st" > " quit" < / span > , quit_activated, NULL, NULL, NULL },< / span > < / code > < / pre > < / div >
< p > And < code > g_action_map_add_action_entries< / code > does all the process instead of the functions you have needed.< / p >
< div class = "sourceCode" id = "cb9" > < pre class = "sourceCode c" > < code class = "sourceCode c" > < span id = "cb9-1" > < a href = "#cb9-1" aria-hidden = "true" > < / a > < span class = "dt" > const< / span > GActionEntry app_entries[] = {< / span >
< span id = "cb9-2" > < a href = "#cb9-2" aria-hidden = "true" > < / a > { < span class = "st" > " quit" < / span > , quit_activated, NULL, NULL, NULL }< / span >
< span id = "cb9-3" > < a href = "#cb9-3" aria-hidden = "true" > < / a > };< / span >
< span id = "cb9-4" > < a href = "#cb9-4" aria-hidden = "true" > < / a > g_action_map_add_action_entries (G_ACTION_MAP (app), app_entries,< / span >
< span id = "cb9-5" > < a href = "#cb9-5" aria-hidden = "true" > < / a > G_N_ELEMENTS (app_entries), app);< / span > < / code > < / pre > < / div >
< p > The code above does:< / p >
< ul >
< li > Builds the “quit” action< / li >
< li > Connects the action and the “activate” signal handler < code > quit_activated< / code > < / li >
< li > Adds the action to the action map < code > app< / code > .< / li >
< / ul >
< p > The same goes for the other actions.< / p >
< div class = "sourceCode" id = "cb10" > < pre class = "sourceCode c" > < code class = "sourceCode c" > < span id = "cb10-1" > < a href = "#cb10-1" aria-hidden = "true" > < / a > < span class = "dt" > const< / span > GActionEntry win_entries[] = {< / span >
< span id = "cb10-2" > < a href = "#cb10-2" aria-hidden = "true" > < / a > { < span class = "st" > " fullscreen" < / span > , NULL, NULL, < span class = "st" > " false" < / span > , fullscreen_changed },< / span >
< span id = "cb10-3" > < a href = "#cb10-3" aria-hidden = "true" > < / a > { < span class = "st" > " color" < / span > , color_activated, < span class = "st" > " s" < / span > , < span class = "st" > " red" < / span > , NULL }< / span >
< span id = "cb10-4" > < a href = "#cb10-4" aria-hidden = "true" > < / a > };< / span >
< span id = "cb10-5" > < a href = "#cb10-5" aria-hidden = "true" > < / a > g_action_map_add_action_entries (G_ACTION_MAP (win), win_entries,< / span >
< span id = "cb10-6" > < a href = "#cb10-6" aria-hidden = "true" > < / a > G_N_ELEMENTS (win_entries), win);< / span > < / code > < / pre > < / div >
< p > The code above does:< / p >
< ul >
< li > Builds a “fullscreen” action and “color” action.< / li >
< li > Connects the “fullscreen” action and the “change-state” signal handler < code > fullscreen_changed< / code > < / li >
< li > Its initial state is set to FALSE.< / li >
< li > Connects the “color” action and the “activate” signal handler < code > color_activated< / code > < / li >
< li > Its parameter type is string and the initial value is “red”.< / li >
< li > Adds the actions to the action map < code > win< / code > .< / li >
< / ul >
< h2 id = "example-code" > Example code< / h2 >
< p > The C source code of < code > menu3< / code > and < code > meson.build< / code > is as follows.< / p >
< div class = "sourceCode" id = "cb11" > < pre class = "sourceCode numberSource C numberLines" > < code class = "sourceCode c" > < span id = "cb11-1" > < a href = "#cb11-1" > < / a > < span class = "pp" > #include < / span > < span class = "im" > < gtk/gtk.h> < / span > < / span >
< span id = "cb11-2" > < a href = "#cb11-2" > < / a > < / span >
< span id = "cb11-3" > < a href = "#cb11-3" > < / a > < span class = "dt" > static< / span > < span class = "dt" > void< / span > < / span >
< span id = "cb11-4" > < a href = "#cb11-4" > < / a > new_activated (GSimpleAction *action, GVariant *parameter, gpointer win) {< / span >
< span id = "cb11-5" > < a href = "#cb11-5" > < / a > }< / span >
< span id = "cb11-6" > < a href = "#cb11-6" > < / a > < / span >
< span id = "cb11-7" > < a href = "#cb11-7" > < / a > < span class = "dt" > static< / span > < span class = "dt" > void< / span > < / span >
< span id = "cb11-8" > < a href = "#cb11-8" > < / a > open_activated (GSimpleAction *action, GVariant *parameter, gpointer win) {< / span >
< span id = "cb11-9" > < a href = "#cb11-9" > < / a > }< / span >
< span id = "cb11-10" > < a href = "#cb11-10" > < / a > < / span >
< span id = "cb11-11" > < a href = "#cb11-11" > < / a > < span class = "dt" > static< / span > < span class = "dt" > void< / span > < / span >
< span id = "cb11-12" > < a href = "#cb11-12" > < / a > save_activated (GSimpleAction *action, GVariant *parameter, gpointer win) {< / span >
< span id = "cb11-13" > < a href = "#cb11-13" > < / a > }< / span >
< span id = "cb11-14" > < a href = "#cb11-14" > < / a > < / span >
< span id = "cb11-15" > < a href = "#cb11-15" > < / a > < span class = "dt" > static< / span > < span class = "dt" > void< / span > < / span >
< span id = "cb11-16" > < a href = "#cb11-16" > < / a > saveas_activated (GSimpleAction *action, GVariant *parameter, gpointer win) {< / span >
< span id = "cb11-17" > < a href = "#cb11-17" > < / a > }< / span >
< span id = "cb11-18" > < a href = "#cb11-18" > < / a > < / span >
< span id = "cb11-19" > < a href = "#cb11-19" > < / a > < span class = "dt" > static< / span > < span class = "dt" > void< / span > < / span >
< span id = "cb11-20" > < a href = "#cb11-20" > < / a > close_activated (GSimpleAction *action, GVariant *parameter, gpointer win) {< / span >
< span id = "cb11-21" > < a href = "#cb11-21" > < / a > }< / span >
< span id = "cb11-22" > < a href = "#cb11-22" > < / a > < / span >
< span id = "cb11-23" > < a href = "#cb11-23" > < / a > < span class = "dt" > static< / span > < span class = "dt" > void< / span > < / span >
< span id = "cb11-24" > < a href = "#cb11-24" > < / a > cut_activated (GSimpleAction *action, GVariant *parameter, gpointer win) {< / span >
< span id = "cb11-25" > < a href = "#cb11-25" > < / a > }< / span >
< span id = "cb11-26" > < a href = "#cb11-26" > < / a > < / span >
< span id = "cb11-27" > < a href = "#cb11-27" > < / a > < span class = "dt" > static< / span > < span class = "dt" > void< / span > < / span >
< span id = "cb11-28" > < a href = "#cb11-28" > < / a > copy_activated (GSimpleAction *action, GVariant *parameter, gpointer win) {< / span >
< span id = "cb11-29" > < a href = "#cb11-29" > < / a > }< / span >
< span id = "cb11-30" > < a href = "#cb11-30" > < / a > < / span >
< span id = "cb11-31" > < a href = "#cb11-31" > < / a > < span class = "dt" > static< / span > < span class = "dt" > void< / span > < / span >
< span id = "cb11-32" > < a href = "#cb11-32" > < / a > paste_activated (GSimpleAction *action, GVariant *parameter, gpointer win) {< / span >
< span id = "cb11-33" > < a href = "#cb11-33" > < / a > }< / span >
< span id = "cb11-34" > < a href = "#cb11-34" > < / a > < / span >
< span id = "cb11-35" > < a href = "#cb11-35" > < / a > < span class = "dt" > static< / span > < span class = "dt" > void< / span > < / span >
< span id = "cb11-36" > < a href = "#cb11-36" > < / a > selectall_activated (GSimpleAction *action, GVariant *parameter, gpointer win) {< / span >
< span id = "cb11-37" > < a href = "#cb11-37" > < / a > }< / span >
< span id = "cb11-38" > < a href = "#cb11-38" > < / a > < / span >
< span id = "cb11-39" > < a href = "#cb11-39" > < / a > < span class = "dt" > static< / span > < span class = "dt" > void< / span > < / span >
< span id = "cb11-40" > < a href = "#cb11-40" > < / a > fullscreen_changed (GSimpleAction *action, GVariant *state, gpointer win) {< / span >
< span id = "cb11-41" > < a href = "#cb11-41" > < / a > < span class = "cf" > if< / span > (g_variant_get_boolean (state))< / span >
< span id = "cb11-42" > < a href = "#cb11-42" > < / a > gtk_window_maximize (GTK_WINDOW (win));< / span >
< span id = "cb11-43" > < a href = "#cb11-43" > < / a > < span class = "cf" > else< / span > < / span >
< span id = "cb11-44" > < a href = "#cb11-44" > < / a > gtk_window_unmaximize (GTK_WINDOW (win));< / span >
< span id = "cb11-45" > < a href = "#cb11-45" > < / a > g_simple_action_set_state (action, state);< / span >
< span id = "cb11-46" > < a href = "#cb11-46" > < / a > }< / span >
< span id = "cb11-47" > < a href = "#cb11-47" > < / a > < / span >
< span id = "cb11-48" > < a href = "#cb11-48" > < / a > < span class = "dt" > static< / span > < span class = "dt" > void< / span > < / span >
< span id = "cb11-49" > < a href = "#cb11-49" > < / a > quit_activated (GSimpleAction *action, GVariant *parameter, gpointer app)< / span >
< span id = "cb11-50" > < a href = "#cb11-50" > < / a > {< / span >
< span id = "cb11-51" > < a href = "#cb11-51" > < / a > g_application_quit (G_APPLICATION(app));< / span >
< span id = "cb11-52" > < a href = "#cb11-52" > < / a > }< / span >
< span id = "cb11-53" > < a href = "#cb11-53" > < / a > < / span >
< span id = "cb11-54" > < a href = "#cb11-54" > < / a > < span class = "dt" > static< / span > < span class = "dt" > void< / span > < / span >
< span id = "cb11-55" > < a href = "#cb11-55" > < / a > app_activate (GApplication *app, gpointer user_data) {< / span >
< span id = "cb11-56" > < a href = "#cb11-56" > < / a > GtkWidget *win = gtk_application_window_new (GTK_APPLICATION (app));< / span >
< span id = "cb11-57" > < a href = "#cb11-57" > < / a > < / span >
< span id = "cb11-58" > < a href = "#cb11-58" > < / a > < span class = "dt" > const< / span > GActionEntry win_entries[] = {< / span >
< span id = "cb11-59" > < a href = "#cb11-59" > < / a > { < span class = "st" > " new" < / span > , new_activated, NULL, NULL, NULL },< / span >
< span id = "cb11-60" > < a href = "#cb11-60" > < / a > { < span class = "st" > " open" < / span > , open_activated, NULL, NULL, NULL },< / span >
< span id = "cb11-61" > < a href = "#cb11-61" > < / a > { < span class = "st" > " save" < / span > , save_activated, NULL, NULL, NULL },< / span >
< span id = "cb11-62" > < a href = "#cb11-62" > < / a > { < span class = "st" > " saveas" < / span > , saveas_activated, NULL, NULL, NULL },< / span >
< span id = "cb11-63" > < a href = "#cb11-63" > < / a > { < span class = "st" > " close" < / span > , close_activated, NULL, NULL, NULL },< / span >
< span id = "cb11-64" > < a href = "#cb11-64" > < / a > { < span class = "st" > " cut" < / span > , cut_activated, NULL, NULL, NULL },< / span >
< span id = "cb11-65" > < a href = "#cb11-65" > < / a > { < span class = "st" > " copy" < / span > , copy_activated, NULL, NULL, NULL },< / span >
< span id = "cb11-66" > < a href = "#cb11-66" > < / a > { < span class = "st" > " paste" < / span > , paste_activated, NULL, NULL, NULL },< / span >
< span id = "cb11-67" > < a href = "#cb11-67" > < / a > { < span class = "st" > " selectall" < / span > , selectall_activated, NULL, NULL, NULL },< / span >
< span id = "cb11-68" > < a href = "#cb11-68" > < / a > { < span class = "st" > " fullscreen" < / span > , NULL, NULL, < span class = "st" > " false" < / span > , fullscreen_changed }< / span >
< span id = "cb11-69" > < a href = "#cb11-69" > < / a > };< / span >
< span id = "cb11-70" > < a href = "#cb11-70" > < / a > g_action_map_add_action_entries (G_ACTION_MAP (win), win_entries, G_N_ELEMENTS (win_entries), win);< / span >
< span id = "cb11-71" > < a href = "#cb11-71" > < / a > < / span >
< span id = "cb11-72" > < a href = "#cb11-72" > < / a > gtk_application_window_set_show_menubar (GTK_APPLICATION_WINDOW (win), TRUE);< / span >
< span id = "cb11-73" > < a href = "#cb11-73" > < / a > < / span >
< span id = "cb11-74" > < a href = "#cb11-74" > < / a > gtk_window_set_title (GTK_WINDOW (win), < span class = "st" > " menu3" < / span > );< / span >
< span id = "cb11-75" > < a href = "#cb11-75" > < / a > gtk_window_set_default_size (GTK_WINDOW (win), < span class = "dv" > 400< / span > , < span class = "dv" > 300< / span > );< / span >
< span id = "cb11-76" > < a href = "#cb11-76" > < / a > gtk_widget_show (win);< / span >
< span id = "cb11-77" > < a href = "#cb11-77" > < / a > }< / span >
< span id = "cb11-78" > < a href = "#cb11-78" > < / a > < / span >
< span id = "cb11-79" > < a href = "#cb11-79" > < / a > < span class = "dt" > static< / span > < span class = "dt" > void< / span > < / span >
< span id = "cb11-80" > < a href = "#cb11-80" > < / a > app_startup (GApplication *app, gpointer user_data) {< / span >
< span id = "cb11-81" > < a href = "#cb11-81" > < / a > GtkBuilder *builder = gtk_builder_new_from_resource (< span class = "st" > " /com/github/ToshioCP/menu3/menu3.ui" < / span > );< / span >
< span id = "cb11-82" > < a href = "#cb11-82" > < / a > GMenuModel *menubar = G_MENU_MODEL (gtk_builder_get_object (builder, < span class = "st" > " menubar" < / span > ));< / span >
< span id = "cb11-83" > < a href = "#cb11-83" > < / a > < / span >
< span id = "cb11-84" > < a href = "#cb11-84" > < / a > gtk_application_set_menubar (GTK_APPLICATION (app), menubar);< / span >
< span id = "cb11-85" > < a href = "#cb11-85" > < / a > g_object_unref (builder);< / span >
< span id = "cb11-86" > < a href = "#cb11-86" > < / a > < / span >
< span id = "cb11-87" > < a href = "#cb11-87" > < / a > < span class = "dt" > const< / span > GActionEntry app_entries[] = {< / span >
< span id = "cb11-88" > < a href = "#cb11-88" > < / a > { < span class = "st" > " quit" < / span > , quit_activated, NULL, NULL, NULL }< / span >
< span id = "cb11-89" > < a href = "#cb11-89" > < / a > };< / span >
< span id = "cb11-90" > < a href = "#cb11-90" > < / a > g_action_map_add_action_entries (G_ACTION_MAP (app), app_entries, G_N_ELEMENTS (app_entries), app);< / span >
< span id = "cb11-91" > < a href = "#cb11-91" > < / a > }< / span >
< span id = "cb11-92" > < a href = "#cb11-92" > < / a > < / span >
< span id = "cb11-93" > < a href = "#cb11-93" > < / a > < span class = "pp" > #define APPLICATION_ID " com.github.ToshioCP.menu3" < / span > < / span >
< span id = "cb11-94" > < a href = "#cb11-94" > < / a > < / span >
< span id = "cb11-95" > < a href = "#cb11-95" > < / a > < span class = "dt" > int< / span > < / span >
< span id = "cb11-96" > < a href = "#cb11-96" > < / a > main (< span class = "dt" > int< / span > argc, < span class = "dt" > char< / span > **argv) {< / span >
< span id = "cb11-97" > < a href = "#cb11-97" > < / a > GtkApplication *app;< / span >
< span id = "cb11-98" > < a href = "#cb11-98" > < / a > < span class = "dt" > int< / span > stat;< / span >
< span id = "cb11-99" > < a href = "#cb11-99" > < / a > < / span >
< span id = "cb11-100" > < a href = "#cb11-100" > < / a > app = gtk_application_new (APPLICATION_ID, G_APPLICATION_FLAGS_NONE);< / span >
< span id = "cb11-101" > < a href = "#cb11-101" > < / a > g_signal_connect (app, < span class = "st" > " startup" < / span > , G_CALLBACK (app_startup), NULL);< / span >
< span id = "cb11-102" > < a href = "#cb11-102" > < / a > g_signal_connect (app, < span class = "st" > " activate" < / span > , G_CALLBACK (app_activate), NULL);< / span >
< span id = "cb11-103" > < a href = "#cb11-103" > < / a > < / span >
< span id = "cb11-104" > < a href = "#cb11-104" > < / a > stat =g_application_run (G_APPLICATION (app), argc, argv);< / span >
< span id = "cb11-105" > < a href = "#cb11-105" > < / a > g_object_unref (app);< / span >
< span id = "cb11-106" > < a href = "#cb11-106" > < / a > < span class = "cf" > return< / span > stat;< / span >
< span id = "cb11-107" > < a href = "#cb11-107" > < / a > }< / span > < / code > < / pre > < / div >
< p > meson.build< / p >
< div class = "sourceCode" id = "cb12" > < pre class = "sourceCode numberSource numberLines" > < code class = "sourceCode" > < span id = "cb12-1" > < a href = "#cb12-1" > < / a > project(' menu3' , ' c' )< / span >
< span id = "cb12-2" > < a href = "#cb12-2" > < / a > < / span >
< span id = "cb12-3" > < a href = "#cb12-3" > < / a > gtkdep = dependency(' gtk4' )< / span >
< span id = "cb12-4" > < a href = "#cb12-4" > < / a > < / span >
< span id = "cb12-5" > < a href = "#cb12-5" > < / a > gnome=import(' gnome' )< / span >
< span id = "cb12-6" > < a href = "#cb12-6" > < / a > resources = gnome.compile_resources(' resources' ,' menu3.gresource.xml' )< / span >
< span id = "cb12-7" > < a href = "#cb12-7" > < / a > < / span >
< span id = "cb12-8" > < a href = "#cb12-8" > < / a > sourcefiles=files(' menu3.c' )< / span >
< span id = "cb12-9" > < a href = "#cb12-9" > < / a > < / span >
< span id = "cb12-10" > < a href = "#cb12-10" > < / a > executable(' menu3' , sourcefiles, resources, dependencies: gtkdep)< / span > < / code > < / pre > < / div >
2022-04-21 16:53:28 +02:00
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