gtk

问题 I have some efficiency concerns in my application using GTK3 and hope you can provide some help. I have a gtk_list_store that is shown within a gtk_tree_view. The tree view allows selecting multiple rows. I have connected a callback function to the "changed" event of the tree_selection. This callback is called whenever the user selects or unselects any row. Then some calculations are done and some images and contents of other gtk widgets are updated accordingly. This is fine so far. I also

问题 I have some efficiency concerns in my application using GTK3 and hope you can provide some help. I have a gtk_list_store that is shown within a gtk_tree_view. The tree view allows selecting multiple rows. I have connected a callback function to the "changed" event of the tree_selection. This callback is called whenever the user selects or unselects any row. Then some calculations are done and some images and contents of other gtk widgets are updated accordingly. This is fine so far. I also

问题 i am writing an Indicator in Python which should update every 5 minutes. Unfortunately the label is updated only 3 times, but then the label stays the same, although the thread still runs. For demonstration purpose, I replaced the data with the current time. #!/usr/bin/env python3 import signal import gi import threading gi.require_version('Gtk', '3.0') gi.require_version('AppIndicator3', '0.1') from gi.repository import Gtk, AppIndicator3, GObject import time class Indicator(): def __init__

问题 if I use: Gtk::Button* button = Gtk::manage( new Gtk::Button(Gtk::Stock::DELETE)); it works perfect, but the documentation and the header says: Deprecated, use label _Delete But if I simply write Gtk::Button* button = Gtk::manage( new Gtk::Button("_Delete")); the button shows simply the text _Delete . How can I create a standard button in the "new" fashion? Update: There is simply no plan to make anything automated anymore in gtk. There was a long discussion on the developers mailing list.

问题 My C application uses X11 calls to create and manage a window. I only want to use GTK3 for menus. I create a window using Window wnd = XCreateWindow(...); Now I want to use GTK to add menus to wnd . GTK APIs such as gtk_container_add(GTK_CONTAINER(gtk_wnd), vbox) want a GtkWindow, which I do not have. How do I accomplish this? Ideally I'd like to get a X11 handle to work with GTK, potentially via a conversion. Alternatively, I'd also settle for getting the current window via some GTK API. 来源：

问题 I have some C++ code and am now building a GUI for an application. In the past I've used python and pygtk for GUI programming and occasionally link to some C++ code to do some heavy lifting. I would like to continue that trend but have one question on how to do it in this case. Part of the C++ code gets images from a camera and I would like to display those images on the GUI. I've used libvlc in the past and could pass the xid from a DrawingArea to vlc to draw the video on. I would like to do

问题 I have some C++ code and am now building a GUI for an application. In the past I've used python and pygtk for GUI programming and occasionally link to some C++ code to do some heavy lifting. I would like to continue that trend but have one question on how to do it in this case. Part of the C++ code gets images from a camera and I would like to display those images on the GUI. I've used libvlc in the past and could pass the xid from a DrawingArea to vlc to draw the video on. I would like to do

问题 I have some C++ code and am now building a GUI for an application. In the past I've used python and pygtk for GUI programming and occasionally link to some C++ code to do some heavy lifting. I would like to continue that trend but have one question on how to do it in this case. Part of the C++ code gets images from a camera and I would like to display those images on the GUI. I've used libvlc in the past and could pass the xid from a DrawingArea to vlc to draw the video on. I would like to do

问题 I have a GtkEntry that's I'd like to allow users to style with their choice of font (or system default). I end up with a Pango description string like "Monospace 10" to describe the font. I'm currently using override_font , which is deprecated in favour of CSS styling. I'd like to at least attempt to do it "right", but it seems like a pretty convoluted and fragile workflow now to get the CSS from the Pango string. Here's an example from Github: def _get_editor_font_css(): """Return CSS for

问题 I'm working on a note taking app using python2/Gtk3/Glade . The notes are stored in a MySQL Database and displayed in a TextView widget . I can load/store/display plain text fine. However I want the ability to add images to the note page, and store them in the Database.so the data has to be serialised and I'm having some trouble figuring out how to encode/decode the serialised data going in and out of the Database. I'm getting unicode start byte errors. If was working with files I could just