int SetBkMode( int nBkMode );
nBkMode
Specifies the background mode. This parameter can be either of the following values:
Value | Meaning |
OPAQUE | Background is filled with the current background color before the text, hatched brush, or pen is drawn. |
TRANSPARENT | Background is not changed before drawing. |
Sets the background mode. The background mode defines whether the system removes existing background colors on the drawing surface before drawing text, hatched brushes, or any pen style that is not a solid line.
The previous background mode. It can be either OPAQUE or TRANSPARENT.
CDC::GetBkColor, CDC::GetBkMode, CDC::SetBkColor, ::SetBkMode