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GraphicsPath.IsVisible Method (Int32, Int32, Graphics)

Indicates whether the specified point is contained within this GraphicsPath, using the specified Graphics.

Namespace:  System.Drawing.Drawing2D
Assembly:  System.Drawing (in System.Drawing.dll)

public bool IsVisible(
	int x,
	int y,
	Graphics graphics
)

Parameters

x
Type: System.Int32
The x-coordinate of the point to test.
y
Type: System.Int32
The y-coordinate of the point to test.
graphics
Type: System.Drawing.Graphics
The Graphics for which to test visibility.

Return Value

Type: System.Boolean
This method returns true if the specified point is contained within this GraphicsPath; otherwise, false.

The coordinates of the point to be tested are given in world coordinates. The transform matrix of graphics is temporarily applied before testing for visibility.

The following code example is designed for use with Windows Forms, and it requires PaintEventArgs e, an OnPaint event object. The code performs the following actions:

  • Creates a path and adds an ellipse to the path.

  • Tests whether the specified point is contained within the path.

  • Displays the result in a dialog box.


private void IsVisibleExample(PaintEventArgs e)
{

    // Create a path and add an ellipse.
    GraphicsPath myPath = new GraphicsPath();
    myPath.AddEllipse(0, 0, 100, 100);

    // Test the visibility of point (50, 50).
    bool visible = myPath.IsVisible(50, 50, e.Graphics);

    // Show the result.
    MessageBox.Show(visible.ToString());
}


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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