/// <summary>
/// Constructs a new collection of device images
/// </summary>
/// <param name="icons">Icons to add</param>
public IconDeviceImageCollection(
IconDeviceImage[] icons
)
{
foreach (IconDeviceImage icon in icons)
{
this.InnerList.Add(icon);
}
}
private void loadFromFile(
string iconFile)
{
loadInitialise();
// Open the file
FileStream fs = new FileStream(
iconFile,
FileMode.Open,
FileAccess.Read,
FileShare.Read);
BinaryReader br = new BinaryReader(fs);
try
{
// read the header:
int iconCount = readIconFileHeader(br);
// read the directory:
ICONDIRENTRY[] ide = new ICONDIRENTRY[iconCount];
for (int iconEntry = 0; iconEntry < iconCount; iconEntry++)
{
ide[iconEntry] = new ICONDIRENTRY(br);
}
IconDeviceImage[] icons = new IconDeviceImage[iconCount];
// read the actual icons:
for (int iconEntry = 0; iconEntry < iconCount; iconEntry++)
{
fs.Seek(ide[iconEntry].dwImageOffset, SeekOrigin.Begin);
byte[] b = new byte[ide[iconEntry].dwBytesInRes];
br.Read(b, 0, ide[iconEntry].dwBytesInRes);
icons[iconEntry] = new IconDeviceImage(b);
}
// Add the icons to the collection:
this.iconCollection = new IconDeviceImageCollection(icons);
}
catch (Exception ex)
{
if (ex is SystemException)
{
throw ex;
}
else
{
throw new IconExException("Failed to read icon file.", ex);
}
}
finally
{
br.Close();
}
this.iconFile = iconFile;
}
/// <summary>
/// Add a new icon device image
/// </summary>
/// <param name="icon">Icon to add</param>
public void Add(IconDeviceImage icon)
{
foreach (IconDeviceImage iconExisting in this.InnerList)
{
if (icon.IconSize.Equals(iconExisting.IconSize) &&
icon.ColorDepth.Equals(iconExisting.ColorDepth))
{
throw new IconExException("An Icon Device Image with the same size and colour depth already exists in this icon");
}
}
this.InnerList.Add(icon);
}
// this method is too long, I'm sorry...
private void loadFromLibrary(
string libraryFile,
string resourceName
)
{
string msg = "";
bool failed = false;
IntPtr hGlobal = IntPtr.Zero;
IntPtr hRsrc = IntPtr.Zero;
IntPtr hLibrary = IntPtr.Zero;
IntPtr lPtr = IntPtr.Zero;
try
{
hLibrary = LoadLibraryEx(
libraryFile,
IntPtr.Zero,
LOAD_LIBRARY_AS_DATAFILE);
if (hLibrary != IntPtr.Zero)
{
hRsrc = FindResource(
hLibrary,
resourceName,
(IntPtr)RT_GROUP_ICON);
if (hRsrc != IntPtr.Zero)
{
hGlobal = LoadResource(hLibrary, hRsrc);
if (hGlobal != IntPtr.Zero)
{
lPtr = LockResource(hGlobal);
if (lPtr != IntPtr.Zero)
{
// now we can read the header:
int iconCount = readResourceIconFileHeader(lPtr);
// read the directory:
MEMICONDIRENTRY[] ide = new MEMICONDIRENTRY[iconCount];
int ofs = 6;
for (int iconEntry = 0; iconEntry < iconCount;
iconEntry++)
{
ide[iconEntry] = new MEMICONDIRENTRY(lPtr, ofs);
//Console.WriteLine(ide[iconEntry].ToString());
ofs += 14;
}
FreeResource(hGlobal);
hGlobal = IntPtr.Zero;
// we have the directory, so now can load the icons:
//IconDeviceImage[] icons = new
// IconDeviceImage[iconCount];
ArrayList icons = new ArrayList();
// read the icons:
for (int iconEntry = 0; iconEntry < iconCount;
iconEntry++)
{
// find the specified icon:
string resName = String.Format("#{0:G}", //N0
ide[iconEntry].nID);
hRsrc = FindResource(
hLibrary,
resName,
(IntPtr)RT_ICON);
if (hRsrc == IntPtr.Zero)
{
msg = String.Format(
"Could not find the component icon resource with id {0}",
ide[iconEntry].nID);
failed = true;
break;
}
else
{
// load the resource:
hGlobal = LoadResource(
hLibrary,
hRsrc);
if (hGlobal == IntPtr.Zero)
{
msg = String.Format(
"Could not load the component icon resource with id {0}",
ide[iconEntry].nID);
failed = true;
break;
}
else
{
// check the size:
int resSize = SizeofResource(hLibrary, hRsrc);
if ((resSize > 0) && (resSize ==
ide[iconEntry].dwBytesInRes))
{
// ok
lPtr = LockResource(hGlobal);
byte[] b = new byte[resSize];
Marshal.Copy(lPtr, b, 0, resSize);
try
{
//icons[iconEntry] = new IconDeviceImage(b);
icons.Add(new IconDeviceImage(b));
}
catch{}
}
else
{
msg = String.Format(
"Component icon resource with id {0} is corrupt",
ide[iconEntry].nID);
failed = true;
}
}
}
}
if (!failed)
{
// Add the icons to the collection:
IconDeviceImage[] temp = new IconDeviceImage[icons.Count];
icons.CopyTo(temp);
this.iconCollection = new
IconDeviceImageCollection(temp);
}
}
else
{
msg = "Can't lock resource for reading.";
failed = true;
}
}
else
{
msg = "Can't load resource for reading.";
failed = true;
}
}
else
{
msg = "Can't find resource.";
failed = true;
}
}
else
{
msg = "Can't load library.";
failed = true;
}
}
catch (Exception ex)
{
failed = true;
msg = ex.Message;
}
finally
{
// clear up handles:
if (hGlobal != IntPtr.Zero)
{
FreeResource(hGlobal);
}
if (hLibrary != IntPtr.Zero)
{
FreeLibrary(hLibrary);
}
if (failed)
{
throw new IconExException(msg);
}
}
}