public static Image GetFileLogo(string fileName)
{
if (string.IsNullOrEmpty(fileName))
{
return(NativeThemeManager.LoadBitmap("UnknownFile.png"));
}
Image fileLogo = null;
if (IsURL(fileName))
{
fileLogo = (Bitmap)WebsiteImage.DownloadSiteIcon(fileName);
if (fileLogo == null)
{
fileLogo = NativeThemeManager.LoadBitmap("url.png");
}
}
else
{
fileLogo = (Bitmap)FileImage.FileNameImage(fileName);
if (fileLogo == null)
{
if (FileOperations.DirectoryExists(fileName))
{
fileLogo = NativeThemeManager.LoadBitmap("Folder.png");
}
else
{
fileLogo = GetExtensionLogo(fileName);
if (fileLogo == null)
{
fileLogo = NativeThemeManager.LoadBitmap("UnknownFile.png");
}
}
}
}
return(fileLogo);
}
private Image GetResourceData()
{
string resourceName;
if (resources.Count < 1)
{
return(null);
}
if (desiredIndex >= resources.Count)
{
desiredIndex = 0;
}
if (desiredIndex >= 0)
{
resourceName = resources[desiredIndex];
}
else
{
desiredIndex = Math.Abs(desiredIndex);
resourceName = desiredIndex.ToString(CultureInfo.InvariantCulture);
}
IntPtr resourceInfo = IntPtr.Zero;
IntPtr resourceData = IntPtr.Zero;
IntPtr resourceLock = IntPtr.Zero;
IntPtr ico = IntPtr.Zero;
Bitmap bitmap = null;
int resourceSize = 0;
if (IsIntResource(resourceName))
{
int resourceNumber = int.Parse(resourceName, CultureInfo.InvariantCulture);
if (resourceNumber == 0)
{
resourceInfo = NativeMethods.FindResource(moduleHandle,
Marshal.StringToHGlobalAuto("0"),
ResourceTypes.RT_GROUP_ICON);
}
else
{
resourceInfo = NativeMethods.FindResource(moduleHandle,
(IntPtr)resourceNumber,
ResourceTypes.RT_GROUP_ICON);
}
}
else
{
resourceInfo = NativeMethods.FindResource(moduleHandle, resourceName, ResourceTypes.RT_GROUP_ICON);
}
if (resourceInfo == IntPtr.Zero)
{
return(null);
}
resourceData = NativeMethods.LoadResource(moduleHandle, resourceInfo);
if (resourceData == IntPtr.Zero)
{
return(null);
}
resourceLock = NativeMethods.LockResource(resourceData);
if (resourceLock == IntPtr.Zero)
{
return(null);
}
//number od desired icon
int nID = NativeMethods.LookupIconIdFromDirectoryEx(resourceLock, true, desiredSize, desiredSize, LoadIconFlags.LR_DEFAULTCOLOR);
if (nID <= 0)
{
return(null);
}
resourceInfo = NativeMethods.FindResource(moduleHandle,
(IntPtr)nID, ResourceTypes.RT_ICON);
if (resourceInfo == IntPtr.Zero)
{
return(null);
}
resourceData = NativeMethods.LoadResource(moduleHandle, resourceInfo);
if (resourceData == IntPtr.Zero)
{
return(null);
}
resourceLock = NativeMethods.LockResource(resourceData);
if (resourceLock == IntPtr.Zero)
{
return(null);
}
resourceSize = NativeMethods.SizeofResource(moduleHandle, resourceInfo);
if (resourceSize > 0)
{
ico = NativeMethods.CreateIconFromResourceEx(resourceLock, resourceSize, true,
0x00030000, 48, 48, LoadIconFlags.LR_DEFAULTCOLOR);
if (ico == IntPtr.Zero)
{
byte[] buf = new byte[resourceSize];
Marshal.Copy(resourceLock, buf, 0, buf.Length);
//The resource contains icon, but getting icon failed for some reason
if (buf[0] == 40)
{
return(null);
}
//The resource contains PNG (check by signature). This can happens
//on Vista. Getting PNG directly from resource without conversion
if ((buf[0] == 0x89) && (buf[1] == 0x50) && (buf[2] == 0x4E))
{
MemoryStream stream = new MemoryStream(buf);
try
{
bitmap = new Bitmap(stream);
}
finally
{
stream.Dispose();
}
return(bitmap);
}
else
{
return(null);
}
}
else
{
Icon icon = (Icon)System.Drawing.Icon.FromHandle(ico);
bitmap = (Bitmap)FileImage.ConvertIconToBitmap(icon);
NativeMethods.DestroyIcon(ico);
icon.Dispose();
return(bitmap);
}
}
else
{
return(null);
}
}
