To get the whole story, see my post Unable to find an entry point name ‘TaskDialogIndirect’ in DLL ‘comctl32.dll’

Thanks to Bart Desmet, you can access all flavors of icons; these are not present in the TaskDialog documentation, I think they have been removed.

Another CancelShutdown ?

Replace the TaskDialogStandardIcon definition with the one below.

    /// <summary>
    /// Specifies the icon displayed in a task dialog.
    /// </summary>
    public enum TaskDialogStandardIcon
    {
        /// <summary>
        /// Displays no icons (default).
        /// </summary>
        None = 0,

        /// <summary>
        /// Displays the warning icon.
        /// </summary>
        Warning = 65535,

        /// <summary>
        /// Displays the error icon.
        /// </summary>
        Error = 65534,

        /// <summary>
        /// Displays the Information icon.
        /// </summary>
        Information = 65533,

        /// <summary>
        /// Displays the User Account Control shield.
        /// </summary>
        Shield = 65532,

        SecurityShieldBlue = 65531,

        SecurityWarning = 65530,

        SecurityError = 65529,

        SecuritySuccess = 65528,

        SecurityShieldGray = 65527,
    }

If you are lazy like I am, get the code : TaskDialogHiddenIcons

Too easy,

• You still have to get the Windows API Code Pack,
• Point the Core project location to where you extracted it,
• Update the TaskDialogStandardIcon definition with the one provided above,
• Enjoy !

If you’re even lazier than I am (I didn’t know this was possible, I have to meet you right now :-), go to bin\Debug and run the application’s .EXE :-)

Too bad,

I was happy when I heard they finally released a managed API for those (not yet managed) APIs …

I have been struggling a lot last year to try get it working with C#, thanks to Chris Dunford’s VistaBridge Considered Harmful; An Alternative which would have otherwise, never happened.

(Credits goes to Kenny Kerr too, for his article and Bart Desmet’s Using Windows Vista’s TaskDialog API in managed code)

The main problem is was the activation context,

Solution is here :

[Seven / Vista] La classe TaskDialog et l’erreur “Unable to find an entry point named ‘TaskDialogIndirect’ in DLL ‘comctl32.dll’”

Here is the translation in english :

1. Open your project properties in the Solution Explorer,
2. On the Security tab, check Enable ClickOnce Security Settings,
3. Now you can see appearing the app.manifest file in the Properties folder of your solution, open it,
4. Beneath the </trustInfo> tag, insert the following code :

     <dependency>
       <dependentAssembly>
         <assemblyIdentity type="win32" name="Microsoft.Windows.Common-Controls" version="6.0.0.0" processorArchitecture="*" publicKeyToken="6595b64144ccf1df" language="*" />
       </dependentAssembly>
     </dependency>
   

5. If you try to build there’ll be an error, to fix it, uncheck the Enable ClickOnce Security Settings.