DrgQueryDraginfoPtrFromDragitem: Difference between revisions
Created page with "This function is called to obtain a pointer to the DRAGINFO structure associated with a given DRAGITEM structure. ==Syntax== DrgQueryDraginfoPtrFromDragitem(pditem) ==Parameters== ;pditem (PDRAGITEM) - input: Pointer to a DRAGITEM structure whose corresponding DRAGINFO is to be returned. ==Returns== ;pDraginfo (PDRAGINFO) - returns: Pointer to the DRAGINFO structure for the specified pditem. :: A return value of NULL indicates that a DRAGITEM structure was not found...." |
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* [[DrgAccessDraginfo]] | * [[DrgAccessDraginfo]] | ||
* [[DrgQueryDraginfoPtr]] | * [[DrgQueryDraginfoPtr]] | ||
[[Category:Drg]] | [[Category:Drg]] | ||
Revision as of 00:21, 8 April 2025
This function is called to obtain a pointer to the DRAGINFO structure associated with a given DRAGITEM structure.
Syntax
DrgQueryDraginfoPtrFromDragitem(pditem)
Parameters
- pditem (PDRAGITEM) - input
- Pointer to a DRAGITEM structure whose corresponding DRAGINFO is to be returned.
Returns
- pDraginfo (PDRAGINFO) - returns
- Pointer to the DRAGINFO structure for the specified pditem.
- A return value of NULL indicates that a DRAGITEM structure was not found.
Example Code
#define INCL_WINSTDDRAG
#include <os2.h>
PDRAGINFO pdinfo; /* Pointer to a DRAGINFO structure */
PDRAGITEM pdragitem; /* Pointer to a DRAGITEM structure */
pdinfo=DrgQueryDraginfoPtrFromDragitem(pdragitem);
if (pdinfo) {
.
.
.
}
Related Functions
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) {
.
.
.
}