In this example the presentation space handle is retrieved, a bit map is loaded, and the presentation space is released with the DrgReleasePS function.
#define INCL_WINSTDDRAG /* Direct Manipulation (Drag) Functions */
#include <os2.h>
#define ID_BITMAP 255
HPS hps;
HWND hwnd;
case DM_DRAGOVER:
hps = DrgGetPS(hwnd);
DrawTargetEmphasis(hps, hwnd);
DrgReleasePS(hps);