/// <summary>
/// This takes the IActivatedEventArgs and gets the IPrinterExtensionContext from it, via the PrintTaskConfiguration
/// </summary>
/// <param name="args">IActivatedEventArgs passed to OnActivated()</param>
/// <returns></returns>
private static IntPtr GetPrinterExtensionContextAsIntPtr(IActivatedEventArgs args)
{
PrintTaskSettingsActivatedEventArgs printTaskSettingsActivatedEventArgs = args as PrintTaskSettingsActivatedEventArgs;
Windows.Devices.Printers.Extensions.PrintTaskConfiguration configuration = printTaskSettingsActivatedEventArgs.Configuration;
Object printerExtensionContext = configuration.PrinterExtensionContext;
IntPtr ptr = IntPtr.Zero;
Guid iidIPrinterExtensionContext = new Guid("39843BF2-C4D2-41FD-B4B2-AEDBEE5E1900");
int hr = Marshal.QueryInterface(Marshal.GetIUnknownForObject(printerExtensionContext), ref iidIPrinterExtensionContext, out ptr);
if (hr < 0)
{
throw new InvalidCastException(iidIPrinterExtensionContext.ToString());
}
if (ptr != IntPtr.Zero)
{
// This is good
}
else
{
throw new InvalidCastException(iidIPrinterExtensionContext.ToString());
}
return(ptr);
}
public void LoadAdvancedPrintSettingsContext(PrintTaskSettingsActivatedEventArgs args)
{
Config = args.Configuration;
Context = Config.PrinterExtensionContext;
LoadScenario(typeof(DeviceAppForPrinters.Preferences));
}
