WpDragCell: Difference between revisions
Created page with "{{DISPLAYTITLE:wpDragCell}} This instance method is called to drag-apply a value in a cell. ==Syntax== _wpDragCell(somSelf, pCell, hwndPal, ptlDrag) ==Parameters== ;''somSelf'' (WPPalette *) - input :Pointer to the object on which the method is being invoked. :Points to an object of class WPPalette. ;''pCell'' (PCELL) - input :Pointer to the **CELL** structure to be dragged. ;''hwndPal'' (HWND) - input :Palette window handle. ;''ptlDrag'' (PPOINTL..." |
No edit summary |
||
| (One intermediate revision by the same user not shown) | |||
| Line 10: | Line 10: | ||
:Points to an object of class [[WPPalette]]. | :Points to an object of class [[WPPalette]]. | ||
;''pCell'' ([[ | ;''pCell'' (P[[CELL]]) - input | ||
:Pointer to the **CELL** structure to be dragged. | :Pointer to the **CELL** structure to be dragged. | ||
| Line 30: | Line 30: | ||
==Usage== | ==Usage== | ||
This method is generally called only by the palette window after it receives the `WM_BEGINDRAG` message. | This method is generally called only by the palette window after it receives the `WM_BEGINDRAG` message. | ||
== Remarks == | |||
The default processing for this method by the [[WPPalette]] class is to do nothing other than return **FALSE**. | |||
==Example Code== | ==Example Code== | ||
| Line 45: | Line 48: | ||
ptlDrag); | ptlDrag); | ||
</PRE> | </PRE> | ||
[[Category:Workplace Instance Methods]] | [[Category:Workplace Instance Methods]] | ||
Latest revision as of 02:07, 17 November 2025
This instance method is called to drag-apply a value in a cell.
Syntax
_wpDragCell(somSelf, pCell, hwndPal, ptlDrag)
Parameters
- somSelf (WPPalette *) - input
- Pointer to the object on which the method is being invoked.
- Points to an object of class WPPalette.
- pCell (PCELL) - input
- Pointer to the **CELL** structure to be dragged.
- hwndPal (HWND) - input
- Palette window handle.
- ptlDrag (PPOINTL) - input
- Pointer in *hwndPal* coordinates from which drag was initiated.
Returns
- rc (BOOL) - returns
- Success indicator.
- TRUE Successful completion.
- FALSE Error occurred.
How to Override
This method should be overridden to handle the drag-apply action. Override processing should include capturing the mouse and waiting for and processing the `WM_ENDDRAG` message.
Usage
This method is generally called only by the palette window after it receives the `WM_BEGINDRAG` message.
Remarks
The default processing for this method by the WPPalette class is to do nothing other than return **FALSE**.
Example Code
#define INCL_WINWORKPLACE
#include <os2.h>
WPPalette *somSelf; /* Pointer to the object on which the method is being invoked. */
PCELL *pCell; /* Pointer to the CELL structure to be dragged. */
HWND hwndPal; /* Palette window handle. */
PPOINTL *ptlDrag; /* Pointer in hwndPal coordinates from which drag was initiated. */
BOOL rc; /* Success indicator. */
rc = _wpDragCell(somSelf, pCell, hwndPal,
ptlDrag);