在Gtk +中堆叠小部件

问题描述

Gtk +中有一种方法可以将一个小部件堆叠在另一个小部件上 - 不包括GtkFixed？ GtkFixed不能正常工作，原因有两个：1）我需要Z顺序，2）我需要一个小部件来伸展并填充提供的空间。 / div>

我认为标准GTK中没有适当的容器。我将继承Gtk :: Fixed ...它仍然是最接近的一个，如果你使用gtkmm，那么子类化不应该很困难¹。然后，您可以控制所有窗口小部件的尺寸，并拉伸一个选定的孩子以填充空间。

要控制Z轴，您可能需要操作窗口小部件的X窗口 - 检查GDK有关GDK windows2主题的文档。我记得在PyGTK中每个部件都有gtk.Widget.window属性，我想对gtkmm也是一样。这假定你的所有子窗口小部件都有X窗口，所以f.e.你需要在Gtk :: EventBox中包装Gtk :: Label。

¹

²

Is there a way in Gtk+ to stack one widget on top of another -- not counting GtkFixed? GtkFixed doesn't work well for two reasons: 1) I need Z order, and 2) I need one widget to stretch and fill provided space.

解决方案

I don't think there is a proper container in standard GTK. I would subclass Gtk::Fixed... it is still the closest one you can get, and if you use gtkmm then subclassing shouldn't be very difficult¹. Then you can control the dimensions of all widgets, stretching one selected child to fill space.

To control Z-axis you will probably need to manipulate widget's X windows--check GDK documentation on topic of GDK windows². I remember that in PyGTK each widget has gtk.Widget.window property, I guess that the same is for gtkmm. This assumes that all your child widgets have X windows, so f.e. you'll need to wrap Gtk::Label inside Gtk::EventBox.

¹ http://www.gtkmm.org/docs/gtkmm-2.4/docs/tutorial/html/chapter-customwidgets.html

² http://www.gtkmm.org/docs/gtkmm-2.4/docs/reference/html/classGdk_1_1Window.html#6eef65b862344ad01b01e527f2c39741

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