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Write custom widget with GTK3


Write custom widget with GTK3

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Write custom widget with GTK3
Tag : development , By : user152319
Date : November 24 2020, 05:47 AM


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Which gtk3 widget is this?


Tag : user-interface , By : Al Dimond
Date : March 29 2020, 07:55 AM
this will help That's a GtkTreeView probably inside a GtkScrolledWindow, for being sure, look at the comment before.

event callback does not get executed in custom gtk3 widget


Tag : c , By : fayoh
Date : March 29 2020, 07:55 AM
I wish this helpful for you Moving from GtkWidget to GtkDrawingArea was required, as without it would crash. The root cause was that the ->window private variable of widget is not populated without a proper realize default callback - which I did not implement.

How to create custom widget in GTK3 in C?


Tag : c , By : Kilimanjaro
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , do you know how do you create a custom widget in GTK 3 ? I tried to subclass GtkDrawingArea in C for hours. Gnome.org only provides a succinct tutorial on how to subclass G_OBJECT. My issue is that G_Object/GTK fails to view my custom StrokerNodalContainer as a subclass of GtkWidget when casting with GTK_WIDGET, even tough my definition struct contains a line like this : , The error message is probably because of this:
G_DEFINE_TYPE( StrokerNodalContainer, stroker_nodal_container, G_TYPE_OBJECT )

Gtk3 replace child widget with another widget


Tag : python , By : Matthew Steed
Date : March 29 2020, 07:55 AM
around this issue This has only recently become possible, since PyGObject 3.14: https://git.gnome.org/browse/pygobject/commit/?h=pygobject-3-14&id=bf84915f89fd5fd502b4fb162eef7bc0a48c8783
Either of the following will work in PyGObject 3.14 and later:
parent.list_child_properties()
Gtk.ContainerClass.list_child_properties(parent)

Custom widget properties in GTK3


Tag : python , By : Meg
Date : March 29 2020, 07:55 AM
it fixes the issue Gtk widgets are based on GObject. There are examples for subclassing and creating properties, which are easy to put together:
class MyWidget(Gtk.Grid):
    @GObject.Property
    def my_custom_property(self):
        return self._my_custom_property

    @my_custom_property.setter
    def my_custom_property(self, value):
        self._my_custom_property = value
my_widget = MyWidget()    
my_widget.props.my_custom_property = 12
my_widget.get_property('my-custom-property'))  # 12
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