added CentreOnScreen(), updated the docs to clear this mess a bit

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

diff --git a/docs/latex/wx/memorydc.tex b/docs/latex/wx/memorydc.tex
index 9ae8c50927d80be665e6647ac2aec6b224749a1c..fe12b8ce0c26e90e9c393319cea98e6c9ecb27d0 100644 (file)
--- a/docs/latex/wx/memorydc.tex
+++ b/docs/latex/wx/memorydc.tex
@@ -1,6 +1,9 @@
 \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}