+
+ /**
+ Constructs a new memory device context having the same characteristics
+ as the given existing device context.
+
+ This constructor creates a memory device context @e compatible with @a
+ dc in wxMSW, the argument is ignored in the other ports. If @a dc is
+ @NULL, a device context compatible with the screen is created, just as
+ with the default constructor.
+ */
+ wxMemoryDC(wxDC *dc);
+