python - Gtk:如何检测EventBox上的鼠标位置？

Question

我一直在尝试用 Python 编写简单的 CAD 应用程序。我正在修改 pyglet，得到了一些结果: ，但我决定切换回 Gtk，结果碰壁了:

我无法获取EventBox上的鼠标指针位置(对于pyglet，它是图片中窗口应用程序左下角的标签)。为此设计了什么信号？或者我应该使用另一种方法？

我将不胜感激任何信息或资源。提前致谢。

Answer 1

Question: How to detect the mouse position over EventBox?

• how-to-capture-event-on-event-box-to-detect-mouse-movement-in-gtk
• Gtk.EventBox

  The Gtk.EventBox widget is a subclass of Gtk.Bin which also has its own window. It is useful since it allows you to catch events for widgets which do not have their own window.

• Gtk.Widget.add_events(events)

  Adds the events in the bitfield events to the event mask for self.

• Gdk.EventMask

  A set of bit-flags to indicate which events a window is to receive.

  • GDK_MOTION_NOTIFY the pointer (usually a mouse) has moved

Gtk.EventBox 应该获得标志，而不是窗口!

box = Gtk.EventBox()
box.connect("motion-notify-event", self.on_mouse_move)
box.add_events(Gdk.EventMask.POINTER_MOTION_MASK)