Mega Code Archive
Get a 32x32 icon for a given file
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//Microsoft Reciprocal License (Ms-RL)
//http://bmcommons.codeplex.com/license
using System;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Drawing;
using System.Text;
namespace BlueMirror.Commons
{
public static class Win32
{
public const uint SHGFI_ICON = 0x100;
public const uint SHGFI_DISPLAYNAME = 0x200;
public const uint SHGFI_TYPENAME = 0x400;
public const uint SHGFI_ATTRIBUTES = 0x800;
public const uint SHGFI_ICONLOCATION = 0x1000;
public const uint SHGFI_EXETYPE = 0x2000;
public const uint SHGFI_SYSICONINDEX = 0x4000;
public const uint SHGFI_LINKOVERLAY = 0x8000;
public const uint SHGFI_SELECTED = 0x10000;
public const uint SHGFI_LARGEICON = 0x0;
public const uint SHGFI_SMALLICON = 0x1;
public const uint SHGFI_OPENICON = 0x2;
public const uint SHGFI_SHELLICONSIZE = 0x4;
public const uint SHGFI_PIDL = 0x8;
public const uint SHGFI_USEFILEATTRIBUTES = 0x10;
private const uint FILE_ATTRIBUTE_NORMAL = 0x80;
private const uint FILE_ATTRIBUTE_DIRECTORY = 0x10;
[DllImport("comctl32.dll")]
private static extern int ImageList_GetImageCount(int himl);
[DllImport("comctl32.dll")]
private static extern int ImageList_GetIcon(int HIMAGELIST, int ImgIndex, int hbmMask);
[DllImport("shell32.dll")]
private static extern int SHGetFileInfo(string pszPath, uint dwFileAttributes, ref SHFILEINFO psfi, int cbfileInfo, uint uFlags);
private struct SHFILEINFO
{
public IntPtr hIcon;
public int iIcon;
public int dwAttributes;
public string szDisplayName;
public string szTypeName;
}
public enum FileIconSize
{
Small, // 16x16 pixels
Large // 32x32 pixels
}
// get a 32x32 icon for a given file
public static Image GetFileIconAsImage(string fullpath) {
return GetFileIconAsImage(fullpath, FileIconSize.Large);
}
public static Image GetFileIconAsImage(string fullpath, FileIconSize size) {
SHFILEINFO info = new SHFILEINFO();
uint flags = SHGFI_USEFILEATTRIBUTES | SHGFI_ICON;
if (size == FileIconSize.Small) {
flags |= SHGFI_SMALLICON;
}
int retval = SHGetFileInfo(fullpath, FILE_ATTRIBUTE_NORMAL, ref info, System.Runtime.InteropServices.Marshal.SizeOf(info), flags);
if (retval == 0) {
return null; // error occured
}
System.Drawing.Icon icon = System.Drawing.Icon.FromHandle(info.hIcon);
//ImageList imglist = new ImageList();
//imglist.ImageSize = icon.Size;
//imglist.Images.Add(icon);
//Image image = imglist.Images[0];
//icon.Dispose();
//return image;
return icon.ToBitmap();
}
public static Icon GetFileIcon(string fullpath, FileIconSize size) {
SHFILEINFO info = new SHFILEINFO();
uint flags = SHGFI_USEFILEATTRIBUTES | SHGFI_ICON;
if (size == FileIconSize.Small) {
flags |= SHGFI_SMALLICON;
}
int retval = SHGetFileInfo(fullpath, FILE_ATTRIBUTE_NORMAL, ref info, System.Runtime.InteropServices.Marshal.SizeOf(info), flags);
if (retval == 0) {
return null; // error occured
}
System.Drawing.Icon icon = System.Drawing.Icon.FromHandle(info.hIcon);
return icon;
}
public static Icon GetFolderIcon(string fullPath, FileIconSize size) {
SHFILEINFO info = new SHFILEINFO();
uint flags = SHGFI_USEFILEATTRIBUTES | SHGFI_ICON;
if (size == FileIconSize.Small) {
flags |= SHGFI_SMALLICON;
}
int retval = SHGetFileInfo(fullPath, FILE_ATTRIBUTE_DIRECTORY, ref info, System.Runtime.InteropServices.Marshal.SizeOf(info), flags);
if (retval == 0) {
return null; // error occured
}
System.Drawing.Icon icon = System.Drawing.Icon.FromHandle(info.hIcon);
return icon;
}
public static int GetFileIconIndex(string fullpath, FileIconSize size) {
SHFILEINFO info = new SHFILEINFO();
uint flags = SHGFI_USEFILEATTRIBUTES | SHGFI_SYSICONINDEX;
if (size == FileIconSize.Small) {
flags |= SHGFI_SMALLICON;
}
int retval = SHGetFileInfo(fullpath, FILE_ATTRIBUTE_NORMAL, ref info, System.Runtime.InteropServices.Marshal.SizeOf(info), flags);
if (retval == 0) {
return -1; // error
}
return info.iIcon;
}
public static int GetFolderIconIndex(string fullpath, FileIconSize size) {
SHFILEINFO info = new SHFILEINFO();
uint flags = SHGFI_USEFILEATTRIBUTES | SHGFI_SYSICONINDEX;
if (size == FileIconSize.Small) {
flags |= SHGFI_SMALLICON;
}
int retval = SHGetFileInfo(fullpath, FILE_ATTRIBUTE_DIRECTORY, ref info, System.Runtime.InteropServices.Marshal.SizeOf(info), flags);
if (retval == 0) {
return -1; // error
}
return info.iIcon;
}
public static void UpdateSystemImageList(ImageList imageList, FileIconSize size, bool isSelected, Image deletedImage) {
SHFILEINFO info = new SHFILEINFO();
uint flags = SHGFI_SYSICONINDEX;
if (size == FileIconSize.Small)
flags |= SHGFI_SMALLICON;
if (isSelected == true)
flags |= SHGFI_OPENICON;
int imageHandle = SHGetFileInfo("C:\\", 0, ref info, System.Runtime.InteropServices.Marshal.SizeOf(info), flags);
int iconCount = ImageList_GetImageCount(imageHandle);
for (int i = imageList.Images.Count; i < iconCount; i++) {
IntPtr iconHandle = (IntPtr)ImageList_GetIcon(imageHandle, i, 0);
try {
if (iconHandle.ToInt64() != 0) {
Icon icon = Icon.FromHandle(iconHandle);
imageList.Images.Add(icon);
icon.Dispose();
DestroyIcon(iconHandle);
}
}
catch {
imageList.Images.Add(deletedImage);
}
}
}
[DllImport("user32.dll", CharSet = CharSet.Auto)]
public extern static bool DestroyIcon(IntPtr handle);
[DllImport("user32.dll", CharSet = CharSet.Unicode)]
public extern static int SendMessage(IntPtr hWnd, UInt32 Msg, int wParam, int lParam);
[DllImport("winmm.dll", EntryPoint = "mciSendStringA")]
extern static void mciSendStringA(string lpstrCommand, string lpstrReturnString, long uReturnLength, long hwndCallback);
public static void Eject(string driveLetter) {
string returnString = "";
mciSendStringA("set cdaudio!" + driveLetter + " door open", returnString, 0, 0);
}
public static void Close(string driveLetter) {
string returnString = "";
mciSendStringA("set cdaudio!" + driveLetter + " door closed", returnString, 0, 0);
}
[DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)]
public extern static uint RegisterWindowMessage(string lpString);
[DllImport("user32.dll", CharSet = CharSet.Unicode)]
public extern static void SetWindowLong(IntPtr hWnd, int nIndex, int dwNewLong);
[DllImport("user32.dll", CharSet = CharSet.Unicode)]
public extern static int GetWindowLong(IntPtr hWnd, int nIndex);
// Constants and structs defined in DBT.h
public const int WM_DEVICECHANGE = 0x0219;
public const int DBT_DEVICEARRIVAL = 0x8000;
public const int DBT_DEVICEREMOVECOMPLETE = 0x8004;
public const int DBT_DEVNODES_CHANGED = 0x0007;
public enum DeviceType : int
{
OEM = 0x00000000, //DBT_DEVTYP_OEM
DeviceNode = 0x00000001, //DBT_DEVTYP_DEVNODE
Volume = 0x00000002, //DBT_DEVTYP_VOLUME
Port = 0x00000003, //DBT_DEVTYP_PORT
Net = 0x00000004 //DBT_DEVTYP_NET
}
public struct BroadcastHeader //_DEV_BROADCAST_HDR
{
public int Size; //dbch_size
public DeviceType Type; //dbch_devicetype
public int Reserved; //dbch_reserved
}
public struct Volume //_DEV_BROADCAST_VOLUME
{
public int Size; //dbcv_size
public DeviceType Type; //dbcv_devicetype
public int Reserved; //dbcv_reserved
public int Mask; //dbcv_unitmask
public int Flags; //dbcv_flags
}
[DllImport("kernel32.dll")]
public extern static long GetVolumeInformation(string PathName, StringBuilder VolumeNameBuffer, int VolumeNameSize, ref uint VolumeSerialNumber, ref uint MaximumComponentLength, ref uint FileSystemFlags, StringBuilder FileSystemNameBuffer, int FileSystemNameSize);
public static string GetVolumeSerialNumber(string drive) {
uint serNum = 0;
uint maxCompLen = 0;
StringBuilder volLabel = new StringBuilder(256);
uint volFlags = 0;
StringBuilder fileSystemName = new StringBuilder(256);
/* long ret = */ GetVolumeInformation(drive, volLabel, volLabel.Capacity, ref serNum, ref maxCompLen, ref volFlags, fileSystemName, fileSystemName.Capacity);
string serialNumberAsString = serNum.ToString("X");
serialNumberAsString.PadLeft(8, '0');
serialNumberAsString = serialNumberAsString.Substring(0, 4) + "-" + serialNumberAsString.Substring(4);
return serialNumberAsString;
}
// List View
public const int LVS_EX_DOUBLEBUFFER = 0x10000;
public const int LVM_FIRST = 0x1000;
public const int LVM_SETITEMSTATE = LVM_FIRST + 43;
public const int LVM_SETEXTENDEDLISTVIEWSTYLE = LVM_FIRST + 54;
public const int LVM_GETEXTENDEDLISTVIEWSTYLE = LVM_FIRST + 55;
public const int LVM_SETCOLUMNORDERARRAY = LVM_FIRST + 58;
public const int LVM_GETCOLUMNORDERARRAY = LVM_FIRST + 59;
public const int LVIF_STATE = 0x0008;
public const int LVIS_SELECTED = 0x0002;
public const int LVIS_FOCUSED = 0x0001;
[StructLayout(LayoutKind.Sequential)]
public struct LVITEM
{
public uint mask;
public int iItem;
public int iSubItem;
public uint state;
public uint stateMask;
public string pszText;
public int cchTextMax;
public int iImage;
public int lParam;
public int iIndent;
public int iGroupId;
public uint cColumns;
public uint puColumns;
}
[DllImport("user32.dll", CharSet = CharSet.Unicode)]
public extern static int SendMessage(IntPtr hWnd, UInt32 Msg, int wParam, ref LVITEM lvItem);
// Tree View Styles
public const int TV_FIRST = 0x1100;
public const int TVM_SETEXTENDEDSTYLE = TV_FIRST + 44;
public const int TVM_GETEXTENDEDSTYLE = TV_FIRST + 45;
public const int TVM_SETAUTOSCROLLINFO = TV_FIRST + 59;
public const int TVS_NOHSCROLL = 0x8000;
public const int TVS_EX_MULTISELECT = 0x0002;
public const int TVS_EX_DOUBLEBUFFER = 0x0004;
public const int TVS_EX_AUTOHSCROLL = 0x0020;
public const int TVS_EX_FADEINOUTEXPANDOS = 0x0040;
public const int GWL_STYLE = -16;
[DllImport("uxtheme.dll", CharSet = CharSet.Unicode)]
public extern static int SetWindowTheme(IntPtr hWnd, string pszSubAppName, string pszSubIdList);
}
}
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