void SetRedraw( BOOL bRedraw = TRUE );
Parameters
bRedraw
[in] Specifies the state of the redraw flag. If TRUE (the default value), the redraw flag is set; if FALSE, the flag is cleared.
Remarks
Sets or clears the redraw flag by sending a WM_SETREDRAW message to the window. Call SetRedraw to allow changes to be redrawn or to prevent changes from being redrawn.