pinvoke.net: Edit: gdi32.RoundRect

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Summary: The RoundRect API

!!!!C# Signature:
 [DllImport("gdi32.dll")]
 static extern bool RoundRect(IntPtr hdc, int nLeftRect, int nTopRect,
   int nRightRect, int nBottomRect, int nWidth, int nHeight);
!!!!User-Defined Types:
None.

!!!!Notes:
None.

!!!!Tips & Tricks:
Please add some!

!!!!Sample Code:
 public class GDI32
 {
	#region GDI32 Functions
	[DllImport("gdi32.dll")]
	public static extern bool RoundRect(RECT lpRect, Point point);

[DllImport("gdi32.dll")]
	public static extern bool RoundRect(IntPtr hdc, int nLeftRect, int nTopRect,
	int nRightRect, int nBottomRect, int nWidth, int nHeight);

[DllImport("gdi32.dll")]
	public static extern IntPtr CreateSolidBrush(uint crColor);

[DllImport("gdi32.dll")]
	public static extern IntPtr CreatePen(int fnPenStyle, int nWidth, uint crColor);

[DllImport("gdi32.dll")]
	public static extern IntPtr SelectObject(IntPtr hdc, IntPtr hgdiobj);

[DllImport("gdi32.dll")]
	public static extern bool DeleteObject(IntPtr hObject);

public static int RGB(Color color)
	{
		return color.ToArgb() & 0xffffff;
	}

#endregion
 }

public class RoundControl : System.Windows.Forms.Control
 {
	protected override void OnPaint(PaintEventArgs e)
	{
		DrawRoundRect(e.Graphics);
	}

public void DrawRoundRect(Graphics gr)
	{			
		RECT rect = new RECT(0, 0, this.Width, this.Height);
		IntPtr hDC = gr.GetHdc();
		IntPtr thePen = GDI32.CreatePen(0, 1, (uint)GDI32.RGB(Color.White));
		IntPtr theBrush = GDI32.CreateSolidBrush((uint)GDI32.RGB(Color.White));
		IntPtr oldPen = GDI32.SelectObject(hDC, thePen);
		IntPtr oldBrush = GDI32.SelectObject(hDC, theBrush);

GDI32.RoundRect(hDC, 0, 0, this.Width, this.Height, 20, 20);

GDI32.SelectObject(hDC, oldPen);
		GDI32.DeleteObject(thePen);
		GDI32.SelectObject(hDC, oldBrush);			
		GDI32.DeleteObject(theBrush);

gr.ReleaseHdc(hDC);			
	}
 }

!!!!Alternative Managed API:
Do you know one?  Please contribute it!

Documentation: RoundRect@msdn on MSDN