private static Icon ExtractIcon(string fileName)
{
// Are we looking at an icon itself?
if (TryExtractIconFromIco(fileName, out Icon icon))
{
return(icon);
}
// Otherwise, fall back to the first icon in the file
return(IconExtractor.ExtractIconByIndex(fileName, 0));
}
public static Icon ExtractIconByIndex(string fileName, int index)
{
using (IconExtractor extractor = IconExtractor.Open(fileName))
{
if (index < 0)
{
throw new ArgumentOutOfRangeException("index");
}
if (index >= extractor.IconNames.Count)
{
return(null);
}
return(extractor.GetIconByIndex(index));
}
}
public static Icon ExtractIconByIdOrIndex(string fileNameAndIdOrIndex)
{
string[] parts = fileNameAndIdOrIndex.Split(new char[] { ',' }, 2);
parts[0] = Environment.ExpandEnvironmentVariables(parts[0]);
if (parts.Length == 1)
{
return(ExtractIcon(parts[0]));
}
if (!int.TryParse(parts[1], out int index))
{
throw new FormatException();
}
if (index >= 0)
{
return(IconExtractor.ExtractIconByIndex(parts[0], index));
}
return(IconExtractor.ExtractIconById(parts[0], Math.Abs(index)));
}
public static Icon ExtractIconById(string fileName, int id)
{
using (IconExtractor extractor = IconExtractor.Open(fileName))
{
if (id < 0)
{
throw new ArgumentOutOfRangeException("index");
}
int count = extractor.IconNames.Count;
for (int i = 0; i < count; i++)
{
ResourceName name = extractor.IconNames[i];
if (name.Id != null && name.Id == id)
{
return(extractor.GetIconByIndex(i));
}
}
}
return(null);
}
