private void StartGlIfNecessary()
{
if (!m_isStarted)
{
try
{
// Attempt To Get A Device Context
m_hdc = User.GetDC(Handle);
if (m_hdc == IntPtr.Zero)
{
throw new InvalidOperationException("Can't get device context");
}
OpenGlCore.InitOpenGl(m_hdc, out m_hglrc);
Initialize();
m_isStarted = true;
}
catch (Exception ex)
{
StopGl(false);
Outputs.WriteLine(OutputMessageType.Error, ex.Message);
Outputs.WriteLine(OutputMessageType.Info, ex.StackTrace);
}
}
}
private void StopGl(bool disposing)
{
Shutdown();
OpenGlCore.ShutdownOpenGl(ref m_hglrc);
if (disposing && (m_hdc != IntPtr.Zero))
{
User.ReleaseDC(Handle, m_hdc);
m_hdc = IntPtr.Zero;
}
m_isStarted = false;
}
/// <summary>
/// Draws a string at given 2D coordinates</summary>
/// <param name="text">Text</param>
/// <param name="x">X coordinate</param>
/// <param name="y">Y coordinate</param>
public static void DrawText(string text, int x, int y)
{
Gl.glRasterPos2i(x, y);
OpenGlCore.DrawText(text);
}
