using ComPDFKit.NativeMethod; using Compdfkit_Tools.Helper; using System; using System.Collections.Generic; using System.Configuration; using System.Data; using System.Linq; using System.Threading.Tasks; using System.Windows; namespace DigitalSignature { /// /// Interaction logic for App.xaml /// public partial class App : Application { protected override void OnStartup(StartupEventArgs e) { base.OnStartup(e); LicenseVerify(); } private static bool LicenseVerify() { bool result = false; result = CPDFSDKVerifier.LoadNativeLibrary(); if (!result) return false; SDKLicenseHelper sdkLicenseHelper = new SDKLicenseHelper(); LicenseErrorCode verifyResult = CPDFSDKVerifier.LicenseVerify(sdkLicenseHelper.key, sdkLicenseHelper.secret); if (verifyResult != LicenseErrorCode.LICENSE_ERR_SUCCESS) return false; return result; } } }