private Control CreateChildCanvas()
{
ICanvas createdControl = null;
//////////////////////
// Try creating a SlimDX canvas.
bool success = false;
if (RunOptions.ForceGdiRendering)
{
Trace.WriteLine("Video Render - Forcing use of GDI rendering due to run option.");
}
else if (DesignerHelper.IsInDesignMode(this))
{
// NOTE: (jmk) probably shouldn't happen at runtime, but I have it in here just in case something goes berserk.
Trace.WriteLine("Video Render - Forcing use of GDI rendering due to being in design mode.");
}
else
{
try
{
createdControl = new SlimDXCanvas();
createdControl.Initialize();
success = true;
}
catch (Exception ex)
{
Trace.WriteLine("Video Render - DirectX canvas initialization failed! Will attempt to fall back to windows(GDI) rendering. Error was: " + ex.ToString());
if (createdControl != null)
{
createdControl.Destroy();
}
} // We don't care what went wrong.
}
/////////////////////
// If necessary, try a GDI/windows-native canvas.
if (!success)
{
createdControl = new GdiCanvas();
createdControl.Initialize();
}
return((Control)createdControl);
}