public static void ExecuteCommandHtmlDoc(IHTMLDocument2 htmlDoc, HtmlCommand command, object data)
{
try
{
if (htmlDoc.IsNull())
{
return;
}
// ensure command is valid and enabled
if (!htmlDoc.queryCommandSupported(command.Name()))
{
return;
}
if (!htmlDoc.queryCommandEnabled(command.Name()))
{
return;
}
htmlDoc.execCommand(command.Name(), false, data);
}
catch (RemotingException) { }
catch (UnauthorizedAccessException) { }
}
public static object QueryValueHtmlDoc(IHTMLDocument2 htmlDoc, HtmlCommand command)
{
try
{
if (htmlDoc.IsNull())
{
return(null);
}
// ensure command is valid and enabled
if (!htmlDoc.queryCommandSupported(command.Name()))
{
return(null);
}
if (!htmlDoc.queryCommandEnabled(command.Name()))
{
return(null);
}
return(htmlDoc.queryCommandValue(command.Name()));
}
catch (RemotingException) { }
catch (UnauthorizedAccessException) { }
return(null);
}
/// <summary>
/// Executes the execCommand on the selected document.
/// Only affects the currently selected range.
/// </summary>
public static void ExecuteCommand(HtmlCommand command, object data)
{
var htmlDoc = ContentUtils.GetFocusedHtmlDoc();
if (!htmlDoc.IsNull())
{
ExecuteCommandHtmlDoc(htmlDoc, command, data);
}
}
public static object ExecuteQuery(HtmlCommand command)
{
var htmlDoc = ContentUtils.GetFocusedHtmlDoc();
if (!htmlDoc.IsNull())
{
return(QueryValueHtmlDoc(htmlDoc, command));
}
return(null);
}
