private Icon _GetIcon(bool large)
{
// Get icon index and path:
int iconIndex;
var iconPath = new StringBuilder(260, 260);
if (linkA == null)
{
linkW.GetIconLocation(iconPath, iconPath.Capacity, out iconIndex);
}
else
{
linkA.GetIconLocation(iconPath, iconPath.Capacity, out iconIndex);
}
var iconFile = iconPath.ToString();
// If there are no details set for the icon, then we must use
// the shell to get the icon for the target:
if (iconFile.Length == 0)
{
// Use the FileIcon object to get the icon:
var flags = FileIcon.SHGetFileInfoConstants.SHGFI_ICON | FileIcon.SHGetFileInfoConstants.SHGFI_ATTRIBUTES;
if (large)
{
flags = flags | FileIcon.SHGetFileInfoConstants.SHGFI_LARGEICON;
}
else
{
flags = flags | FileIcon.SHGetFileInfoConstants.SHGFI_SMALLICON;
}
var fileIcon = new FileIcon(Target, flags);
return(fileIcon.ShellIcon);
}
else
{
// Use ExtractIconEx to get the icon:
var hIconEx = new IntPtr[1] {
IntPtr.Zero
};
if (large)
{
UnManagedMethods.ExtractIconEx(iconFile, iconIndex, hIconEx, null, 1);
}
else
{
UnManagedMethods.ExtractIconEx(iconFile, iconIndex, null, hIconEx, 1);
}
// If success then return as a GDI+ object
Icon icon = null;
if (hIconEx[0] != IntPtr.Zero)
{
icon = Icon.FromHandle(hIconEx[0]);
}
return(icon);
}
}
private Icon getIcon(bool large)
{
int iconIndex;
var iconPath = new StringBuilder(260, 260);
if (_linkA == null)
{
_linkW.GetIconLocation(iconPath, iconPath.Capacity, out iconIndex);
}
else
{
_linkA.GetIconLocation(iconPath, iconPath.Capacity, out iconIndex);
}
var iconFile = iconPath.ToString();
if (iconFile.Length == 0)
{
var flags = FileIcon.ShGetFileInfoConstants.SHGFI_ICON |
FileIcon.ShGetFileInfoConstants.SHGFI_ATTRIBUTES;
if (large)
{
flags = flags | FileIcon.ShGetFileInfoConstants.SHGFI_LARGEICON;
}
else
{
flags = flags | FileIcon.ShGetFileInfoConstants.SHGFI_SMALLICON;
}
var fileIcon = new FileIcon(Target, flags);
return(fileIcon.ShellIcon);
}
var hIconEx = new[] { IntPtr.Zero };
if (large)
{
NativeMethods.ExtractIconEx(
iconFile,
iconIndex,
hIconEx,
null,
1);
}
else
{
NativeMethods.ExtractIconEx(
iconFile,
iconIndex,
null,
hIconEx,
1);
}
Icon icon = null;
if (hIconEx[0] != IntPtr.Zero)
{
icon = Icon.FromHandle(hIconEx[0]);
//UnManagedMethods.DestroyIcon(hIconEx[0]);
}
return(icon);
}
/// <summary>
/// アイコンのファイルとインデックスを取得する
/// </summary>
/// <param name="iconFile">アイコンのファイル</param>
/// <param name="iconIndex">アイコンのインデックス</param>
private void GetIconLocation(out string iconFile, out int iconIndex)
{
StringBuilder iconFileBuffer = new StringBuilder(MAX_PATH, MAX_PATH);
if (isUnicodeEnvironment)
{
shellLinkW.GetIconLocation(iconFileBuffer, iconFileBuffer.Capacity, out iconIndex);
}
else
{
shellLinkA.GetIconLocation(iconFileBuffer, iconFileBuffer.Capacity, out iconIndex);
}
iconFile = iconFileBuffer.ToString();
}
public void Load(string linkFileName)
{
if (null == linkFileName)
{
throw new ArgumentNullException("linkFileName", "A name of the link file cannot be null");
}
if (!File.Exists(linkFileName))
{
throw new FileNotFoundException("Link not found", linkFileName);
}
new FileIOPermission(FileIOPermissionAccess.Read | FileIOPermissionAccess.PathDiscovery, linkFileName).Demand();
object sl = null;
try
{
Type slType = Type.GetTypeFromCLSID(CLSID_ShellLink);
sl = Activator.CreateInstance(slType);
IPersistFile pf = sl as IPersistFile;
pf.Load(linkFileName, 0);
int showCmd;
StringBuilder builder = new StringBuilder(INFOTIPSIZE);
IShellLinkW shellLinkW = sl as IShellLinkW;
if (null == shellLinkW)
{
IShellLinkA shellLinkA = sl as IShellLinkA;
if (null == shellLinkA)
{
ThrowInvalidComObjectException();
}
shellLinkA.GetArguments(builder, builder.Capacity);
this.arguments = builder.ToString();
shellLinkA.GetDescription(builder, builder.Capacity);
this.description = builder.ToString();
shellLinkA.GetHotkey(out this.hotkey);
shellLinkA.GetIconLocation(builder, builder.Capacity, out this.iconIndex);
this.iconPath = builder.ToString();
Win32FindDataA wfd;
shellLinkA.GetPath(builder, builder.Capacity, out wfd, SLGP_UNCPRIORITY);
this.path = builder.ToString();
shellLinkA.GetShowCmd(out showCmd);
shellLinkA.GetWorkingDirectory(builder, builder.Capacity);
this.workingDirectory = builder.ToString();
}
else
{
shellLinkW.GetArguments(builder, builder.Capacity);
this.arguments = builder.ToString();
shellLinkW.GetDescription(builder, builder.Capacity);
this.description = builder.ToString();
shellLinkW.GetHotkey(out this.hotkey);
shellLinkW.GetIconLocation(builder, builder.Capacity, out this.iconIndex);
this.iconPath = builder.ToString();
Win32FindDataW wfd;
shellLinkW.GetPath(builder, builder.Capacity, out wfd, SLGP_UNCPRIORITY);
this.path = builder.ToString();
shellLinkW.GetShowCmd(out showCmd);
shellLinkW.GetWorkingDirectory(builder, builder.Capacity);
this.workingDirectory = builder.ToString();
}
this.showCmd = (ShowCommand)showCmd;
}
finally
{
if (null != sl)
{
Marshal.ReleaseComObject(sl);
}
}
// This object is not eligible for the garbage collection during this method call
GC.KeepAlive(this);
}
private Icon GetIcon(bool large)
{
// Get icon index and path:
int iconIndex = 0;
StringBuilder iconPath = new StringBuilder(260, 260);
if (_linkA == null)
{
_linkW.GetIconLocation(iconPath, iconPath.Capacity, out iconIndex);
}
else
{
_linkA.GetIconLocation(iconPath, iconPath.Capacity, out iconIndex);
}
string iconFile = iconPath.ToString();
// If there are no details set for the icon, then we must use
// the shell to get the icon for the target:
if (iconFile.Length == 0)
{
// Use the FileIcon object to get the icon:
FileIcon.ShGetFileInfoConstants flags = FileIcon.ShGetFileInfoConstants.ShgfiIcon |
FileIcon.ShGetFileInfoConstants.ShgfiAttributes;
if (large)
{
flags = flags | FileIcon.ShGetFileInfoConstants.ShgfiLargeicon;
}
else
{
flags = flags | FileIcon.ShGetFileInfoConstants.ShgfiSmallicon;
}
FileIcon fileIcon = new FileIcon(Target, flags);
return(fileIcon.ShellIcon);
}
else
{
// Use ExtractIconEx to get the icon:
IntPtr[] hIconEx = new IntPtr[1] {
IntPtr.Zero
};
int iconCount = 0;
if (large)
{
iconCount = UnManagedMethods.ExtractIconEx(
iconFile,
iconIndex,
hIconEx,
null,
1);
}
else
{
iconCount = UnManagedMethods.ExtractIconEx(
iconFile,
iconIndex,
null,
hIconEx,
1);
}
// If success then return as a GDI+ object
Icon icon = null;
if (hIconEx[0] != IntPtr.Zero)
{
icon = Icon.FromHandle(hIconEx[0]);
//UnManagedMethods.DestroyIcon(hIconEx[0]);
}
return(icon);
}
}
