Input Parameters | Significance |
DtvLong iwd | widget Id |
int (*fnc)() | pointer to Pre_Drop function |
Output Parameters | Significance |
none | - |
Return Code | Significance |
0 else | default operation is executed default operation is not executed |
The function allows you to program your own DRAG&DROP functionality. If a Pre_DROP trigger function has been set at a widget, this is called prior to the DROP action. If the function delivers a return code which is not zero, the default operation is not executed.
The target widget for the DROP action can be set using the function > dal_wdg_set_dst < .