define NO_GCC_PRAGMA in wx-config output on Darwin

[wxWidgets.git] / docs / latex / wx / memorydc.tex

diff --git a/docs/latex/wx/memorydc.tex b/docs/latex/wx/memorydc.tex
index 9ae8c50927d80be665e6647ac2aec6b224749a1c..a94e74c77be725027aa90f71b0f8a10d89cac77d 100644 (file)
--- a/docs/latex/wx/memorydc.tex
+++ b/docs/latex/wx/memorydc.tex
@@ -1,6 +1,10 @@
 \section{\class{wxMemoryDC}}\label{wxmemorydc}
 
-A memory device context provides a means to draw graphics onto a bitmap.
+A memory device context provides a means to draw graphics onto a bitmap. When
+drawing in to a mono-bitmap, using {\tt wxWHITE}, {\tt wxWHITE\_PEN} and
+{\tt wxWHITE\_BRUSH}
+will draw the background colour (i.e. 0) whereas all other colours will draw the
+foreground colour (i.e. 1).
 
 \wxheading{Derived from}
 
@@ -42,7 +46,7 @@ can be reselected into another memory DC.
 Constructs a new memory device context.
 
 Use the {\it Ok} member to test whether the constructor was successful
-in creating a useable device context. Don't forget to select a bitmap
+in creating a usable device context. Don't forget to select a bitmap
 into the DC before drawing on it.
 
 \membersection{wxMemoryDC::SelectObject}