\end{twocollist}}}
+\membersection{wxWindow::IsFrozen}\label{wxwindowisfrozen}
+
+\constfunc{virtual bool}{IsFrozen}{\void}
+
+Returns \true if the window is currently frozen by a call to
+\helpref{Freeze()}{wxwindowfreeze}.
+
+\wxheading{See also}
+
+\helpref{Thaw()}{wxwindowthaw}
+
+
\membersection{wxWindow::IsRetained}\label{wxwindowisretained}
\constfunc{virtual bool}{IsRetained}{\void}
Returns {\tt true} if the window is shown, {\tt false} if it has been hidden.
+\wxheading{See also}
+
+\helpref{wxWindow::IsShownOnScreen}{wxwindowisshownonscreen}
+
+
+\membersection{wxWindow::IsShownOnScreen}\label{wxwindowisshownonscreen}
+
+\constfunc{virtual bool}{IsShownOnScreen}{\void}
+
+Returns {\tt true} if the window is physically visible on the screen, i.e. it
+is shown and all its parents up to the toplevel window are shown as well.
+
+\wxheading{See also}
+
+\helpref{wxWindow::IsShown}{wxwindowisshown}
+
\membersection{wxWindow::IsTopLevel}\label{wxwindowistoplevel}
window from being used as an implicit parent for the dialogs which were
created without a parent. It is useful for the windows which can disappear at
any moment as creating children of such windows results in fatal problems.}
-\twocolitem{\windowstyle{wxFRAME\_EX\_CONTEXTHELP}}{Under Windows, puts a query button on the
-caption. When pressed, Windows will go into a context-sensitive help mode and wxWidgets will send
-a wxEVT\_HELP event if the user clicked on an application window.
+\twocolitem{\windowstyle{wxWS\_EX\_CONTEXTHELP}}{Under Windows, puts a query
+button on the caption. When pressed, Windows will go into a context-sensitive
+help mode and wxWidgets will send a wxEVT\_HELP event if the user clicked on an
+application window.
This style cannot be used together with wxMAXIMIZE\_BOX or wxMINIMIZE\_BOX, so
-you should use the style of
-{\tt wxDEFAULT\_FRAME\_STYLE \& \textasciitilde(wxMINIMIZE\_BOX | wxMAXIMIZE\_BOX)} for the
-frames having this style (the dialogs don't have minimize nor maximize box by
-default)}
+these two styles are automatically turned of if this one is used.}
\twocolitem{\windowstyle{wxWS\_EX\_PROCESS\_IDLE}}{This window should always process idle events, even
if the mode set by \helpref{wxIdleEvent::SetMode}{wxidleeventsetmode} is wxIDLE\_PROCESS\_SPECIFIED.}
\twocolitem{\windowstyle{wxWS\_EX\_PROCESS\_UI\_UPDATES}}{This window should always process UI update events,