I am trying to save the image of the chart in which my strategy is running. The code below works perfectly for saving the image of the currently displayed chart but I would like to save the image of a chart that is not in the forefront. I have several different strategies running and would like my strategy to save the current chart it is attached too, even if it is minimized. I assumed that using "this.ChartContol" would select the current chart that the strategy was attached too but it doesn't.
PHP Code:
public void zSaveChart()
{
if(!zIsRealTime()) return; // Only save chart for real time trades
if(ChartControl == null) // Strategy is not attached to a chart
{
if(File.Exists(strategyPath + "\\image.png"))
return; // Default image already saved to strategy directory
else
{
string path = NinjaTrader.Core.Globals.UserDataDir + "\\bin\\Custom\\Strategies\\image.png";
if(File.Exists(path))
{
File.Copy(path,strategyPath + "\\image.png");
}
}
}
else
{
if (0 == Interlocked.Exchange(ref threadLock, 1)) //0 indicates that the method is not in use.
{
try
{
this.ChartControl.Dispatcher.InvokeAsync(() =>
{
NinjaTrader.Gui.Chart.Chart chart = Window.GetWindow(this.ChartControl) as NinjaTrader.Gui.Chart.Chart;
RenderTargetBitmap screenCapture = chart.GetScreenshot(ShareScreenshotType.Chart);
System.Windows.Media.Imaging.BitmapFrame outputFrame = BitmapFrame.Create(screenCapture);
if (screenCapture != null)
{
try
{
PngBitmapEncoder png = new PngBitmapEncoder();
png.Frames.Add(outputFrame);
using (Stream stream = File.Create(string.Format(@"{0}\{1}", strategyPath, "image.png"))) png.Save(stream);
NinjaTrader.Code.Output.Process("Screenshot saved to " + strategyPath, PrintTo.OutputTab1);
}
catch (IOException)
{
NinjaTrader.Code.Output.Process("ScreenshotTakerExample: Could not take screenshot", PrintTo.OutputTab1);
}
}
});
}
catch (Exception ex)
{
NinjaTrader.Code.Output.Process("Could not save screenshot " + ex, PrintTo.OutputTab1);
}
Interlocked.Exchange(ref threadLock, 0); //Release the lock
}
}
}
Comment