One possibility is to simply pass FALSE as the last parameter to InvalidateRect. Passing TRUE, as you're doing, erases the background.
A more far-reaching solution is to maintain a data structure...
Type: Posts; User: oogabooga
One possibility is to simply pass FALSE as the last parameter to InvalidateRect. Passing TRUE, as you're doing, erases the background.
A more far-reaching solution is to maintain a data structure...