SftBox/OCX 5.0 - Combo Box Control

SftBox.DragStarting Event

The user is initiating an OLE drag & drop operation.

Syntax

object

A SftBox object.

Part

Describes in which part of the combo box the potential OLE drag & drop operation has been detected.

Button

Describes the button(s) that are pressed. The Button argument is a bit field with bits corresponding to the left button, right button and middle button. These bits correspond to the values shown below. The bits set indicate the button that caused the event.

Shift

Describes the state of the SHIFT, CONTROL and ALT keys. A bit is set if the key is down. The Shift argument is a bit field with bits corresponding to the SHIFT, CONTROL and ALT keys. It indicates the state of these keys. Some, all, or none of the bits can be set, indicating which of the keys are pressed.

xPos

The x coordinate of the mouse cursor. The units used depend on the container (Visual Basic, Visual C++, etc.) and the coordinate system used.

yPos

The y coordinate of the mouse cursor. The units used depend on the container (Visual Basic, Visual C++, etc.) and the coordinate system used.

Comments

The DragStarting event occurs when the user is initiating an OLE drag & drop operation.

The DragStarting event occurs when the OLEDragMode property is set to OLEDragSftBoxManual and a potential drag & drop operation is detected.

The DragStarting event only occurs when a drag & drop operation is detected in the edit control portion or the drop down portion. The static portion cannot generate a DragStarting event.

If the combo box has an edit control portion (simple or drop down combo box), the user has clicked the mouse button on the currently selected text of the edit control portion. The Part parameter is set to partSftBoxEdit.

If the combo box has a drop down portion (drop down or drop down list combo box), the user has pressed the mouse button on an item and without releasing it, moved the cursor. The Part parameter is set to partSftBoxStatic or partSftBoxDropDown.

The application can start an OLE drag & drop operation by using the OLEDrag method.

Examples

VB.NET

    comboTarget.Items.Add("A Source Item")
    comboTarget.Items.Add("Another Source Item")
    comboTarget.Items.Add("Last Source Item")
    comboTarget.Columns.MakeOptimal(0)
    comboTarget.Items.RecalcHorizontalExtent(0)

End Sub

Private Sub comboSource_DragStarting(ByVal sender As Object, ByVal e As AxSftBoxLib50._ISftBoxEvents_DragStartingEvent) Handles comboSource.DragStarting
    comboSource.OLEDrag()
End Sub

Private Sub comboSource_OLEStartDrag(ByVal sender As Object, ByVal e As AxSftBoxLib50._ISftBoxEvents_OLEStartDragEvent) Handles comboSource.OLEStartDrag
    e.allowedEffects = vbDropEffectCopy Or vbDropEffectMove
    Dim textData As String = comboSource.get_Cell(comboSource.Items.Selection, 0).Text
    e.data.SetData(textData, SftOLEClipboardConstants.sftCFText)

View Entire Sample Code

VB6

            ToIndex = ToIndex + 1
        Next
        ComboTarget.Items.Selection = ItemIndex
    End If
    ComboTarget.Columns.MakeOptimal 0
    ComboTarget.Items.RecalcHorizontalExtent 0
End Sub

Private Sub ComboSource_DragStarting(ByVal Part As SftBoxLib50.SftBoxPortionConstants, ByVal Button As Integer, ByVal Shift As Integer, ByVal xPos As Single, ByVal yPos As Single)
    ComboSource.OLEDrag
End Sub

Private Sub ComboSource_OLEStartDrag(Data As SftBoxLib50.DataObject, AllowedEffects As Long)
    AllowedEffects = vbDropEffectCopy Or vbDropEffectMove
    Data.SetData ComboSource.Cell(ComboSource.Items.Selection, 0).Text, sftCFText
End Sub

View Entire Sample Code

C#

    comboTarget.Items.Add("A Source Item");
    comboTarget.Items.Add("Another Source Item");
    comboTarget.Items.Add("Last Source Item");
    comboTarget.Columns.MakeOptimal(0);
    comboTarget.Items.RecalcHorizontalExtent(0);
}

private void comboSource_DragStarting(object sender, AxSftBoxLib50._ISftBoxEvents_DragStartingEvent e)
{
    comboSource.OLEDrag();
}

private void comboSource_OLEStartDrag(object sender, AxSftBoxLib50._ISftBoxEvents_OLEStartDragEvent e)
{
    e.allowedEffects = vbDropEffectCopy | vbDropEffectMove;
    string textData = comboSource.get_Cell(comboSource.Items.Selection, 0).Text;

View Entire Sample Code

See Also SftBox Object | Object Hierarchy