DndTarget (Property)

For some types of controls, WINDEV and WEBDEV propose an automatic management of Drag and Drop: to do so, check the corresponding option in the "Details" tab of the control description. Then, a control can be defined as source or target of Drag and Drop.

The automatic Drag and Drop is available:

for Edit, List Box, ListView and TreeView controls.
for Upload, Static, Button, Link; Image, Formatted Static, List Box and Combo Box controls.

In a Programmed Drag and Drop, the DndSource and DndTarget properties are used to define the Drag and Drop source and target controls.

DndTarget is used to find out and modify the behavior of a control during "Drag and Drop". This control will be defined as target for "Drag and Drop", which means that "Drag and Drop" will be performed toward this control.

Example

// -- Initialize the LIST_Source list
// LIST_Source is not a target
LIST_Source.DndTarget = dndInactive

// -- Initialize the LIST_Target list
LIST_Target.DndTarget = dndProgram
DnDEvent("Drop", "LIST_Target", dndDrop)
DnDEvent("DragOver", "LIST_Target", dndDragOver)

Syntax

Finding out the behavior of a target control for Drag and Drop Hide the details

<Management of Drag and Drop> = <Control used>.DndTarget

<Management of Drag and Drop>: Constant

Identifies the behavior of the target control for Drag and Drop.
dndAuto Automatic management of Drag and Drop
dndInactive Drag and Drop is disabled for this control
dndProgram Drag and Drop from this control must be managed by the developer

<Control used>: Control name

Name of the control to be used.

Modifying the behavior of a target control for Drag and Drop Hide the details

<Control used>.DndTarget = <Management of Drag and Drop>

<Control used>: Control name

Name of the control to be used.

<Management of Drag and Drop>: Constant

Identifies the behavior of the target control for Drag and Drop.
dndAuto Automatic management of Drag and Drop
dndInactive Drag and Drop is disabled for this control
dndProgram Drag and Drop from this control must be managed by the developer

Remarks

Programmed or automatic Drag and Drop

An automatic Drag and Drop is available for edit controls, list boxes, listviews, treeviews and tables.

A programmed Drag and Drop is available for the following controls:

Edit control
List box and listview
TreeView
Table
Image
Bar code
Button
Looper
Chart
TreeView Table
Calendar
Organizer
Scheduler

Only the automatic Drag and Drop is available.

An automatic Drag and Drop is available for the following controls:

Upload control,
Static,
Button,
Link,
Image,
Formatted static,
Edit control,
List Box,
Combo Box.

The programmed Drag and Drop is also used to manage the cells, supercontrols and control templates.

Limits

The DndTarget property can only be used with the following controls:

edit controls,
buttons,
check boxes and radio buttons,
tabs,
list boxes or listviews,
combo boxes,
tables or TreeView Tables
treeviews,
loopers,
image controls,
spins, sliders, scrollbars,
Chart controls,
calendars,
range sliders,
organizers,
schedulers,
.NET 2.0 controls (WinForm)
Rating controls.

The DndTarget property applies only to Edit, List Box and TreeView controls.

The DndTarget property can only be used with the following controls:

edit controls,
buttons,
Upload controls,
Static controls,
links,
images,
formatted Static controls,
list boxes,
combo boxes,
organizers,
schedulers,
cells,
supercontrols,
control templates.
rich text areas.