| Value | Meaning |
|---|---|
| D2D1_MAP_OPTIONS_NONE0 | <summary> The mapped pointer has undefined behavior. </summary> |
| D2D1_MAP_OPTIONS_READ1 | <summary> The mapped pointer can be read from. </summary> |
| D2D1_MAP_OPTIONS_WRITE2 | <summary> The mapped pointer can be written to. </summary> |
| D2D1_MAP_OPTIONS_DISCARD4 | <summary> The previous contents of the bitmap are discarded when it is mapped. </summary> |