DrgQueryDraginfoPtrFromHwnd
This function determines whether a particular window has allocated a DRAGINFO structure.
Syntax
DrgQueryDraginfoPtrFromHwnd(hwndSource)
Parameters
- hwndSource (HWND) - input
- Handle of the window whose associated DRAGINFO pointer is to be returned.
Returns
- pDraginfo (PDRAGINFO) - returns
- Pointer to the DRAGINFO structure allocated by the window specified by hwndSource.
- If the return value is NULL, the DRAGINFO structure has not been allocated.
Remarks
The application can gain access to the structure DRAGINFO by calling DrgAccessDraginfo.
Example Code
#define INCL_WINSTDDRAG
#include <os2.h>
HWND hwndWindow; /* Window handle */
PDRAGINFO pinfo; /* Pointer to a DRAGINFO structure */
pdinfo=DrgQueryDraginfoPtrFromHwnd(hwndWindow);
If (pdinfo) {
.
.
.
}