DrgQueryDraginfoPtrFromHwnd - Syntax

This function determines whether a particular window has allocated a DRAGINFO structure.

#define INCL_WINSTDDRAG
#include <os2.h>

HWND         hwndSource;  /*  Handle of the window whose associated DRAGINFO pointer is to be returned.                 */
PDRAGINFO    pDraginfo;   /*  Pointer to the DRAGINFO structure allocated by the                 window specified by hwndSource.                         */

pDraginfo = DrgQueryDraginfoPtrFromHwnd(hwndSource);