public static extern int SHMessageBoxCheck(
[In] IntPtr hwnd,
[In] String pszText,
[In] String pszTitle,
[In] MessageBoxCheckFlags uType,
[In] int iDefault,
[In] string pszRegVal
);
/// <summary>
/// This code displays a dialog box with a "Don't show me this dialog again" checkbox and an OK button.In normal circumstances, result will always be 0 on return.
/// </summary>
/// <param name="form">pass in a form or call as static extension method</param>
/// <param name="text">Message Text</param>
/// <param name="title">Message Title</param>
/// <param name="flags">MessageBoxCheckFlags.OK and ICONINFORMATION by default</param>
/// <returns>0 or -1 if ignored/errored</returns>
public static int MessageBoxCheck(this Form form, string text, string title, MessageBoxCheckFlags flags = MessageBoxCheckFlags.MB_OK | MessageBoxCheckFlags.MB_ICONINFORMATION)
{
//Found via http://www.pinvoke.net/default.aspx/shlwapi.SHMessageBoxCheck
//
// Reg Key The Windows Shell (Explorer) stores your preference in the following registry key:
//
// HKEY_CURRENT_USER
// Software
// Microsoft
// Windows
// CurrentVersion
// Explorer
// DontShowMeThisDialogAgain
/* This code displays a dialog box with a "Don't show me this dialog again" checkbox and an OK button. In normal circumstances, result will always be 0 on return. */
int result;
try
{
result = SHMessageBoxCheck(
form.Handle,
text,
title,
flags,
-1,
Application.ExecutablePath + "!" + form.Name // This last argument is the value of the registry key
);
}
catch (Exception e)
{
// Note that the only exceptions we can get here are inter-op exceptions, I think.
result = -1;
}
if (result == -1)
{
// The dialog didn't show up, so do some alternate action here.
}
return(result);
}