LineShape.StartPoint Property

 

Gets or sets the starting coordinates of a line drawn by a LineShape control.

Namespace:   Microsoft.VisualBasic.PowerPacks
Assembly:  Microsoft.VisualBasic.PowerPacks.Vs (in Microsoft.VisualBasic.PowerPacks.Vs.dll)

Syntax

[BrowsableAttribute(false)]
public Point StartPoint { get; set; }

public:
[BrowsableAttribute(false)]
property Point StartPoint {
    Point get();
    void set(Point value);
}

[<BrowsableAttribute(false)>]
member StartPoint : Point with get, set

<BrowsableAttribute(False)>
Public Property StartPoint As Point

Property Value

Type: System.Drawing.Point

A Point structure that represents the starting coordinates of the line.

Remarks

The coordinates are relative to the container of the LineShape control and are expressed in pixels.

You can also change the starting coordinates by setting the X1 and Y1 properties.

Examples

The following example switches a LineShape from a horizontal orientation to a diagonal orientation, and then to a vertical orientation, using the EndPoint as an axis.

Microsoft.VisualBasic.PowerPacks.ShapeContainer canvas = 
    new Microsoft.VisualBasic.PowerPacks.ShapeContainer();
Microsoft.VisualBasic.PowerPacks.LineShape line1 = 
    new Microsoft.VisualBasic.PowerPacks.LineShape(10, 10, 200, 10);
string direction;
private void RotateLine2_Load(System.Object sender, System.EventArgs e)
{
    // Set the form as the parent of the ShapeContainer.
    canvas.Parent = this;
    // Set the ShapeContainer as the parent of the LineShape.
    line1.Parent = canvas;
    direction = "horizontal";
}
private void RotateLine2_Click(object sender, System.EventArgs e)
{
    ChangeOrientation();
}

private void ChangeOrientation()
{

    if (direction == "horizontal")
    // Change the orientation to diagonal.
    {
        line1.StartPoint = new System.Drawing.Point(line1.X1, 200);
        direction = "diagonal";
    }
    else if (direction == "diagonal")
    {
        line1.StartPoint = new System.Drawing.Point(line1.Y1, 200);
        direction = "vertical";
    }
    else
    {
        // Change the orientation to horizontal.
        line1.StartPoint = new System.Drawing.Point(10, line1.Y2);
        direction = "horizontal";
    }
}

Dim canvas As New Microsoft.VisualBasic.PowerPacks.ShapeContainer
Dim line1 As New Microsoft.VisualBasic.PowerPacks.LineShape(10, 10, 200, 10)

Private Sub RotateLine2_Load() Handles MyBase.Load
    ' Set the form as the parent of the ShapeContainer.
    canvas.Parent = Me
    ' Set the ShapeContainer as the parent of the LineShape.
    line1.Parent = canvas
End Sub
Private Sub RotateLine2_Click() Handles Me.Click
    ChangeOrientation()
End Sub
Private Sub ChangeOrientation()
    Static direction As String = "horizontal"
    If direction = "horizontal" Then
        ' Change the orientation to diagonal.
        line1.StartPoint = New System.Drawing.Point(line1.X1, 200)
        direction = "diagonal"
    ElseIf direction = "diagonal" Then
        ' Change the orientation to vertical.
        line1.StartPoint = New System.Drawing.Point(line1.Y1, 200)
        direction = "vertical"
    Else
        ' Change the orientation to horizontal.
        line1.StartPoint = New System.Drawing.Point(10, line1.Y2)
        direction = "horizontal"
    End If
End Sub

See Also

ShapeContainer
Shape
LineShape Class
Microsoft.VisualBasic.PowerPacks Namespace
How to: Draw Shapes with the OvalShape and RectangleShape Controls (Visual Studio)
How to: Draw Lines with the LineShape Control (Visual Studio)
Introduction to the Line and Shape Controls (Visual Studio)

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