/// <include file='doc\Help.uex' path='docs/doc[@for="Help.ShowPopup"]/*' />
/// <devdoc>
/// <para>
/// Displays a Help pop-up window.
/// </para>
/// </devdoc>
public static void ShowPopup(Control parent, string caption, Point location)
{
Debug.WriteLineIf(Help.WindowsFormsHelpTrace.TraceVerbose, "Help:: ShowPopup");
NativeMethods.HH_POPUP pop = new NativeMethods.HH_POPUP();
// We have to marshal the string ourselves to prevent access violations.
IntPtr pszText = Marshal.StringToCoTaskMemAuto(caption);
try {
pop.pszText = pszText;
pop.idString = 0;
pop.pt = new NativeMethods.POINT(location.X, location.Y);
// Looks like a windows
pop.clrBackground = Color.FromKnownColor(KnownColor.Window).ToArgb() & 0x00ffffff;
ShowHTML10Help(parent, null, HelpNavigator.Topic, pop);
}
finally {
Marshal.FreeCoTaskMem(pszText);
}
}
public static extern int HtmlHelp(HandleRef hwndCaller, [MarshalAs(UnmanagedType.LPTStr)] string pszFile, int uCommand, [MarshalAs(UnmanagedType.LPStruct)] NativeMethods.HH_POPUP dwData);