예제 #1
0
        /// <summary>
        /// [MSI 3.1] Enables a record-based external user-interface handler. This external UI handler is called
        /// before the normal internal user-interface handler. The external UI handler has the option to suppress
        /// the internal UI by returning a non-zero value to indicate that it has handled the messages.
        /// </summary>
        /// <param name="uiHandler">A callback delegate that handles the UI messages</param>
        /// <param name="messageFilter">Specifies which messages to handle using the external message handler.
        /// If the external handler returns a non-zero result, then that message will not be sent to the UI,
        /// instead the message will be logged if logging has been enabled.</param>
        /// <returns>The previously set external handler, or null if there was no previously set handler</returns>
        /// <remarks><p>
        /// To restore the previous UI handler, a second call is made to SetExternalUI using the
        /// ExternalUIHandler returned by the first call to SetExternalUI and specifying
        /// <see cref="InstallLogModes.None"/> as the message filter.
        /// </p><p>
        /// The external user interface handler does not have full control over the external user
        /// interface unless <see cref="SetInternalUI(InstallUIOptions)"/> is called with the uiLevel parameter set to
        /// <see cref="InstallUIOptions.Silent"/>. If SetInternalUI is not called, the internal user
        /// interface level defaults to <see cref="InstallUIOptions.Basic"/>. As a result, any message not
        /// handled by the external user interface handler is handled by Windows Installer. The initial
        /// "Preparing to install..." dialog always appears even if the external user interface
        /// handler handles all messages.
        /// </p><p>
        /// SetExternalUI should only be called from a bootstrapping application. You cannot call
        /// it from a custom action
        /// </p><p>
        /// Win32 MSI API:
        /// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msisetexternaluirecord.asp">MsiSetExternalUIRecord</a>
        /// </p></remarks>
        internal static ExternalUIRecordHandler SetExternalUI(ExternalUIRecordHandler uiHandler, InstallLogModes messageFilter)
        {
            NativeExternalUIRecordHandler nativeHandler = null;

            if (uiHandler != null)
            {
                nativeHandler = new ExternalUIRecordProxy(uiHandler).ProxyHandler;
                Installer.externalUIHandlers.Add(nativeHandler);
            }
            NativeExternalUIRecordHandler oldNativeHandler;
            uint ret = NativeMethods.MsiSetExternalUIRecord(nativeHandler, (uint)messageFilter, IntPtr.Zero, out oldNativeHandler);

            if (ret != 0)
            {
                Installer.externalUIHandlers.Remove(nativeHandler);
                throw InstallerException.ExceptionFromReturnCode(ret);
            }

            if (oldNativeHandler != null && oldNativeHandler.Target is ExternalUIRecordProxy)
            {
                Installer.externalUIHandlers.Remove(oldNativeHandler);
                return(((ExternalUIRecordProxy)oldNativeHandler.Target).Handler);
            }
            else
            {
                return(null);
            }
        }
예제 #2
0
        /// <summary>
        /// [MSI 3.1] Enables a record-based external user-interface handler. This external UI handler is called
        /// before the normal internal user-interface handler. The external UI handler has the option to suppress
        /// the internal UI by returning a non-zero value to indicate that it has handled the messages.
        /// </summary>
        /// <param name="uiHandler">A callback delegate that handles the UI messages</param>
        /// <param name="messageFilter">Specifies which messages to handle using the external message handler.
        /// If the external handler returns a non-zero result, then that message will not be sent to the UI,
        /// instead the message will be logged if logging has been enabled.</param>
        /// <returns>The previously set external handler, or null if there was no previously set handler</returns>
        /// <remarks><p>
        /// To restore the previous UI handler, a second call is made to SetExternalUI using the
        /// ExternalUIHandler returned by the first call to SetExternalUI and specifying
        /// <see cref="InstallLogModes.None"/> as the message filter.
        /// </p><p>
        /// The external user interface handler does not have full control over the external user
        /// interface unless <see cref="SetInternalUI(InstallUIOptions)"/> is called with the uiLevel parameter set to
        /// <see cref="InstallUIOptions.Silent"/>. If SetInternalUI is not called, the internal user
        /// interface level defaults to <see cref="InstallUIOptions.Basic"/>. As a result, any message not
        /// handled by the external user interface handler is handled by Windows Installer. The initial
        /// "Preparing to install..." dialog always appears even if the external user interface
        /// handler handles all messages.
        /// </p><p>
        /// SetExternalUI should only be called from a bootstrapping application. You cannot call
        /// it from a custom action
        /// </p><p>
        /// Win32 MSI API:
        /// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msisetexternaluirecord.asp">MsiSetExternalUIRecord</a>
        /// </p></remarks>
        internal static ExternalUIRecordHandler SetExternalUI(ExternalUIRecordHandler uiHandler, InstallLogModes messageFilter)
        {
            NativeExternalUIRecordHandler nativeHandler = null;
            if (uiHandler != null)
            {
                nativeHandler = new ExternalUIRecordProxy(uiHandler).ProxyHandler;
                Installer.externalUIHandlers.Add(nativeHandler);
            }
            NativeExternalUIRecordHandler oldNativeHandler;
            uint ret = NativeMethods.MsiSetExternalUIRecord(nativeHandler, (uint) messageFilter, IntPtr.Zero, out oldNativeHandler);
            if (ret != 0)
            {
                Installer.externalUIHandlers.Remove(nativeHandler);
                throw InstallerException.ExceptionFromReturnCode(ret);
            }

            if (oldNativeHandler != null && oldNativeHandler.Target is ExternalUIRecordProxy)
            {
                Installer.externalUIHandlers.Remove(oldNativeHandler);
                return ((ExternalUIRecordProxy) oldNativeHandler.Target).Handler;
            }
            else
            {
                return null;
            }
        }