\wxheading{Return value}
-{\tt TRUE} if successful, {\tt FALSE} otherwise.
+{\tt true} if successful, {\tt false} otherwise.
\wxheading{Remarks}
\constfunc{bool}{IsEmpty}{\void}
-Returns {\tt TRUE} if the region is empty, {\tt FALSE} otherwise.
+Returns {\tt true} if the region is empty, {\tt false} otherwise.
\membersection{wxRegion::Subtract}\label{wxregionsubstract}
\wxheading{Return value}
-{\tt TRUE} if successful, {\tt FALSE} otherwise.
+{\tt true} if successful, {\tt false} otherwise.
\wxheading{Remarks}
\wxheading{Return value}
-{\tt TRUE} if successful, {\tt FALSE} otherwise (the region is unchanged then).
+{\tt true} if successful, {\tt false} otherwise (the region is unchanged then).
\membersection{wxRegion::Union}\label{wxregionunion}
\wxheading{Return value}
-{\tt TRUE} if successful, {\tt FALSE} otherwise.
+{\tt true} if successful, {\tt false} otherwise.
\wxheading{Remarks}
\wxheading{Return value}
-{\tt TRUE} if successful, {\tt FALSE} otherwise.
+{\tt true} if successful, {\tt false} otherwise.
\wxheading{Remarks}
\constfunc{bool}{HaveRects}{\void}
-Returns {\tt TRUE} if there are still some rectangles; otherwise returns {\tt FALSE}.
+Returns {\tt true} if there are still some rectangles; otherwise returns {\tt false}.
\membersection{wxRegionIterator::Reset}
\constfunc{}{operator bool}{\void}
-Returns {\tt TRUE} if there are still some rectangles; otherwise returns {\tt FALSE}.
+Returns {\tt true} if there are still some rectangles; otherwise returns {\tt false}.
You can use this to test the iterator object as if it were of type bool.