/// <summary>
/// Raises the Paint event.
/// </summary>
/// <param name="e">
/// A <see cref="PaintEventArgs"/> that contains the event data.
/// </param>
protected override void OnPaint(PaintEventArgs e)
{
if (DesignMode == false)
{
if (_RenderContext != null)
{
// Render the UserControl
if (_RenderContext.IsCurrent == false)
{
_RenderContext.MakeCurrent(true);
}
// Define viewport
Gl.Viewport(0, 0, ClientSize.Width, ClientSize.Height);
// Clear
_RenderWindow.Clear(_RenderContext);
// Derived class implementation
RenderThis(_RenderContext);
// Render event
RaiseRenderEvent(new GraphicsControlEventArgs(_RenderContext, _RenderWindow));
// Swap buffers if double-buffering
_RenderWindow.SwapSurface();
// Base implementation (overlay GDI graphics)
base.OnPaint(e);
}
else
{
e.Graphics.DrawLines(_FailurePen, new Point[] {
new Point(0, 0), new Point(ClientSize.Width, ClientSize.Height),
new Point(0, ClientSize.Height), new Point(ClientSize.Width, 0),
});
// Base implementation
base.OnPaint(e);
}
}
else
{
e.Graphics.Clear(Color.Black);
e.Graphics.DrawLines(_DesignPen, new Point[] {
new Point(0, 0), new Point(ClientSize.Width, ClientSize.Height),
new Point(0, ClientSize.Height), new Point(ClientSize.Width, 0),
});
// Base implementation
base.OnPaint(e);
}
}
