radTabStrip DragDrop

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3 posts, 1 answers
  1. Marc
    Marc avatar
    21 posts
    Member since:
    Dec 2008

    Posted 09 Jan 2009 Link to this post

    I am trying to implment the ability for another control to drag and drop onto tabs in a radTabStrip.  I have been able to implment most of it, but am having difficulty determining which tab the user dropped on. 

    I would have thought I could put the following code in the DragDrop event of the TabStrip, but the GetItemByPoint always returns nothing, even when tabs were dropped on.

    Dim tab As Telerik.WinControls.UI.TabItem  
    tab = radTabStrip.TabStripElement.GetItemByPoint(New Point(e.X, e.Y))  
    If tab IsNot Nothing Then  
    End If  

    Any help would be appreciated.

    I am using VB.NET in VS2008

    Thank you -- controls are still fantastic
  2. Answer
    Victor avatar
    1358 posts

    Posted 09 Jan 2009 Link to this post

    Hi Marc,

    Thanks for writing.
    You can get a reference to the tab you are dropping on by iterating over the Items collection of the RadTabStrip and checking if its Bounds property contains the point that you clicked on. A somewhat subtle detail is that you have to convert the Bounds rectangle to screen coordinates since e.X and e.Y are in screen coordinates.
    Here is the code:
    Private Sub RadTabStrip1_DragDrop(ByVal sender As System.ObjectByVal e As System.Windows.Forms.DragEventArgs) Handles RadTabStrip1.DragDrop  
            Dim i As Integer 
            Dim p As Point  
            p.X = e.X  
            p.Y = e.Y  
            For i = 0 To RadTabStrip1.Items.Count - 1  
                If RadTabStrip1.Items(i).RectangleToScreen(RadTabStrip1.Items(i).Bounds).Contains(p) Then 
                    MessageBox.Show("Found tab item! This is " + RadTabStrip1.Items(i).Text)  
                    RadTabStrip1.Items(i).Text = e.Data.GetData(GetType(String)).ToString()  
                    RadTabStrip1.Items(i).ForeColor = Color.Red  
                End If 
        End Sub 
    Please do write again if you have more questions.

    All the best,
    the Telerik team

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  3. Marc
    Marc avatar
    21 posts
    Member since:
    Dec 2008

    Posted 09 Jan 2009 Link to this post

    Yep, that did it!

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