SelectedThumbIndexChanged イベント

SelectedThumbIndex プロパティの値が変更されたときに発生します。

構文

Visual Basic (宣言)
C#

Public Event SelectedThumbIndexChanged As EventHandler

public event EventHandler SelectedThumbIndexChanged

次のサンプルコードは、SelectedThumbIndexChanged イベントの処理例を示します。このサンプルを実行するには、TextBox1 という名前の System.Windows.Forms.TextBox コントロールを含むフォームに以下のコードを貼り付けて、フォームのコンストラクターまたは System.Windows.Forms.Form.Load イベント処理メソッドから CreateGcTrackBarWithIndexChanged メソッドを呼び出します。

C#
Visual Basic

private void CreateGcTrackBarWithIndexChanged()
{
    // Create a instance of GcTrackBar.
    GrapeCity.Win.Bars.GcTrackBar gcTrackBar1 = new GrapeCity.Win.Bars.GcTrackBar();

    // Initialize the Name, Location and Size of GcTrackBar
    gcTrackBar1.Name = "gcTrackBar1";
    gcTrackBar1.Location = new System.Drawing.Point(8, 8);
    gcTrackBar1.Size = new System.Drawing.Size(224, 45);
    gcTrackBar1.SelectedThumbIndexChanged += new EventHandler(gcTrackBar1_SelectedThumbIndexChanged);

    // Add the second Thumb to the Thumbs of GcTrackBar
    GrapeCity.Win.Bars.Thumb thumb1 = new GrapeCity.Win.Bars.Thumb();
    thumb1.ToolTip = "#0cm";
    gcTrackBar1.Thumbs.Add(thumb1);

    gcTrackBar1.FlatStyle = GrapeCity.Win.Common.FlatStyleEx.Professional;

    // Add gcTrackBar1 to the form
    this.Controls.Add(gcTrackBar1);
}

void gcTrackBar1_SelectedThumbIndexChanged(object sender, EventArgs e)
{
    // Display the vlaue of current selected Thumb in the text box.
    GcTrackBar trackbar = (GcTrackBar)sender;
    GrapeCity.Win.Bars.Thumb selectedThumb = trackbar.Thumbs[trackbar.SelectedThumbIndex];
    this.textBox1.Text =  "Thumb" + trackbar.SelectedThumbIndex.ToString() + "'s value is " + selectedThumb.Value;
}

Private Sub CreateGcTrackBarWithIndexChanged()
    ' Create a instance of GcTrackBar.
    Dim gcTrackBar1 As New GcTrackBar()

    ' Initialize the Name, Location and Size of GcTrackBar
    gcTrackBar1.Name = "gcTrackBar1"
    gcTrackBar1.Location = New System.Drawing.Point(8, 8)
    gcTrackBar1.Size = New System.Drawing.Size(224, 45)
    AddHandler gcTrackBar1.SelectedThumbIndexChanged, AddressOf gcTrackBar1_SelectedThumbIndexChanged

    ' Add the second Thumb to the Thumbs of GcTrackBar
    Dim thumb1 As New Thumb()
    thumb1.ToolTip = "#0cm"
    gcTrackBar1.Thumbs.Add(thumb1)

    gcTrackBar1.FlatStyle = Global.GrapeCity.Win.Common.FlatStyleEx.Professional

    ' Add gcTrackBar1 to the form
    Me.Controls.Add(gcTrackBar1)
End Sub

Private Sub gcTrackBar1_SelectedThumbIndexChanged(ByVal sender As Object, ByVal e As EventArgs)
    ' Display the vlaue of current selected Thumb in the text box.
    Dim trackbar As GcTrackBar = DirectCast(sender, GcTrackBar)
    Dim selectedThumb As Thumb = trackbar.Thumbs(trackbar.SelectedThumbIndex)
    Me.textBox1.Text = "Thumb" + trackbar.SelectedThumbIndex.ToString() + "'s value is " + selectedThumb.Value.ToString()
End Sub