<ThreadSafetyStatement>Gtk# is thread aware, but not thread safe; See the <linklocation="node:gtk-sharp/programming/threads">Gtk# Thread Programming</link> for details.</ThreadSafetyStatement>
<para>The <seecref="T:Gtk.Fixed"/> widget is a container which can place child widgets at fixed positions and with fixed sizes, given in pixels. <seecref="T:Gtk.Fixed"/> performs no automatic layout management.</para>
<para>For most applications, you should not use this container! It keeps you from having to learn about the other Gtk# containers, but it results in broken applications. With <seecref="T:Gtk.Fixed"/>, the following things will result in truncated text, overlapping widgets, and other display bugs:
<term>Themes, which may change widget sizes.</term>
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<term>Fonts other than the one you used to write the app will of course change the size of widgets containing text; keep in mind that users may use a larger font because of difficulty reading the default, or they may be using Windows or the framebuffer port of GTK+, where different fonts are available.</term>
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<term>Translation of text into other languages changes its size. Also, display of non-English text will use a different font in many cases.</term>
<para>In addition, the fixed widget can not properly be mirrored in right-to-left languages such as Hebrew and Arabic. i.e. normally Gtk# will flip the interface to put labels to the right of the thing they label, but it can not do that with <seecref="T:Gtk.Fixed"/>. So your application will not be usable in right-to-left languages.</para>
<para>Finally, fixed positioning makes it kind of annoying to add/remove GUI elements, since you have to reposition all the other elements. This is a long-term maintenance problem for your application.</para>
<para>If you know none of these things are an issue for your application, and prefer the simplicity of <seecref="T:Gtk.Fixed"/>, by all means use the widget. But you should be aware of the tradeoffs.</para>
<para>Sets whether a <seecref="T:Gtk.Fixed"/> widget is created with a separate <seecref="T:Gdk.Window"/> or not. (By default, it will be created without a seperate <seecref="T:Gdk.Window"/>). This function must be called while the <seecref="T:Gtk.Fixed"/> is not realized, for instance, immediately after the window is created.</para>