如何在Gtk3中获取DrawingArea窗口句柄？ [英] How I can get DrawingArea window handle in Gtk3?

问题描述

我在CEF Python 3上获得了以下代码（链接）

I get this code on CEF Python 3 (link)

    ...

    self.container = gtk.DrawingArea()
    self.container.set_property('can-focus', True)
    self.container.connect('size-allocate', self.OnSize)
    self.container.show()

    ...

    windowID = self.container.get_window().handle
    windowInfo = cefpython.WindowInfo()
    windowInfo.SetAsChild(windowID)
    self.browser = cefpython.CreateBrowserSync(windowInfo,
            browserSettings={},
            navigateUrl=GetApplicationPath('example.html'))

    ...

此代码[ self.container.get_window（）。handle ]不能与PyGI和GTK3一起使用。

This code [self.container.get_window().handle] don't work with PyGI and GTK3.

我试图将代码从GTK2移植到GTK3，该怎么办？

I trying port the code from GTK2 to GTK3, how I can do this?

已编辑：

经过一番搜索，我找到了使 get_window 工作的提示：我打电话给 self.container.realize（） self.container.get_window（）。但是我还没有Window Handle。

After some search, I found a tip to make get_window work: I call: self.container.realize() before self.container.get_window(). But I cant't get Window Handle yet.

我需要将CEF3窗口放在DrawingArea或任何元素中。我如何使用PyGI做到这一点？

I need put CEF3 window inside a DrawingArea or any element. How I can do this with PyGI?

编辑：

我的环境是：

Windows 7

Windows 7

Python 2.7和Python 3.2

Python 2.7 and Python 3.2

推荐答案

遗憾的是，python gobject自省似乎无法解决此问题，并使 gdk_win32_window_get_handle 可用（在很久以前就报告了gnome bugtracker中的一个错误）-Python GStreamer和Windows也非常需要它...

Sadly there seems to be no progress on the python gobject introspection to fix this and make gdk_win32_window_get_handle available (reported a bug in the gnome bugtracker quite a while ago) - it is also quite needed for Python GStreamer and Windows ...

所以我遵循了totaam的建议并使用了ctypes访问gdk_win32_window_get_handle。因为我没有这个经验，所以永远把我拿走了-嗯，这真是个丑陋的骇客-但是在需要的时候......

So I followed the suggestion of totaam and used ctypes to access gdk_win32_window_get_handle. Took me forever since I had no experience with this - and well it is somehow quite an ugly hack - but well when needed...

这里是代码：

Here is the code:

        Gdk.threads_enter()            
        #get the gdk window and the corresponding c gpointer
        drawingareawnd = drawingarea.get_property("window")
        #make sure to call ensure_native before e.g. on realize
        if not drawingareawnd.has_native():
            print("Your window is gonna freeze as soon as you move or resize it...")
        ctypes.pythonapi.PyCapsule_GetPointer.restype = ctypes.c_void_p
        ctypes.pythonapi.PyCapsule_GetPointer.argtypes = [ctypes.py_object]
        drawingarea_gpointer = ctypes.pythonapi.PyCapsule_GetPointer(drawingareawnd.__gpointer__, None)            
        #get the win32 handle
        gdkdll = ctypes.CDLL ("libgdk-3-0.dll")
        hnd = gdkdll.gdk_win32_window_get_handle(drawingarea_gpointer)
        #do what you want with it ... I pass it to a gstreamer videosink
        Gdk.threads_leave()

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