///<summary>
///通过路径获取图标
///</summary>
///<param name="path">文件或文件夹路径</param>
///<param name="uFlags">uFlags:GetFileInfoFlags.SHGFI_SMALLICON小图标;GetFileInfoFlags.SHGFI_LARGEICON大图标</param>
///<returns>获取的图标</returns>
public static Icon GetIcon(string path, GetFileInfoFlags uFlags)
{
FileInfomation info = new FileInfomation();
GetFileInfo(path, 0, ref info, Marshal.SizeOf(info), (int)(GetFileInfoFlags.SHGFI_ICON | uFlags));
try
{
return Icon.FromHandle(info.hIcon);
}
catch
{
return null;
}
}
///<summary>
///通过路径获取图标
///</summary>
///<param name="path">文件或文件夹路径</param>
///<param name="uFlags">uFlags:GetFileInfoFlags.SHGFI_SMALLICON小图标;GetFileInfoFlags.SHGFI_LARGEICON大图标</param>
///<returns>获取的图标</returns>
public static Icon GetIcon(string path, GetFileInfoFlags uFlags)
{
FileInfomation info = new FileInfomation();
GetFileInfo(path, 0, ref info, Marshal.SizeOf(info), (int)(GetFileInfoFlags.SHGFI_ICON | uFlags));
try
{
return(Icon.FromHandle(info.hIcon));
}
catch
{
return(null);
}
}
/// <summary>
/// 获取文件图标+文件信息
/// </summary>
/// <param name="fileName">文件类型的扩展名 或 文件的绝对路径</param>
/// <param name="shFileInfo">文件信息</param>
/// <param name="isLargeIcon">是否获取大图标</param>
public static Icon GetFileInfo(string fileName, ref SHFILEINFO shFileInfo, bool isLargeIcon = false)
{
GetFileInfoFlags uIconFlags = isLargeIcon ? GetFileInfoFlags.SHGFI_LARGEICON : GetFileInfoFlags.SHGFI_SMALLICON;
SHGetFileInfo(fileName, (uint)FileAttributeFlags.FILE_ATTRIBUTE_NORMAL, ref shFileInfo, (uint)Marshal.SizeOf(shFileInfo),
(uint)(GetFileInfoFlags.SHGFI_USEFILEATTRIBUTES |
GetFileInfoFlags.SHGFI_ICON | uIconFlags |
GetFileInfoFlags.SHGFI_TYPENAME | GetFileInfoFlags.SHGFI_DISPLAYNAME
)
);
Icon icon = Icon.FromHandle(shFileInfo.hIcon).Clone() as Icon;
User32.DestroyIcon(shFileInfo.hIcon); //释放资源
return(icon);
}
/// <summary>
/// 获取文件夹图标+文件夹信息
/// </summary>
/// <param name="shFolderInfo">文件夹信息</param>
/// <param name="isLargeIcon">是否获取大图标</param>
/// <param name="isOpenState">是否打开状态</param>
public static Icon GetFolderIcon(ref SHFILEINFO shFolderInfo, bool isLargeIcon = false, bool isOpenState = false)
{
GetFileInfoFlags uIconFlags = isLargeIcon ? GetFileInfoFlags.SHGFI_LARGEICON : GetFileInfoFlags.SHGFI_SMALLICON;
GetFileInfoFlags uOpenFlags = isOpenState ? GetFileInfoFlags.SHGFI_OPENICON : 0;
SHGetFileInfo(string.Empty, (uint)FileAttributeFlags.FILE_ATTRIBUTE_DIRECTORY, ref shFolderInfo, (uint)Marshal.SizeOf(shFolderInfo),
(uint)(GetFileInfoFlags.SHGFI_USEFILEATTRIBUTES |
GetFileInfoFlags.SHGFI_ICON | uIconFlags | uOpenFlags |
GetFileInfoFlags.SHGFI_TYPENAME | GetFileInfoFlags.SHGFI_DISPLAYNAME
)
);
Icon icon = Icon.FromHandle(shFolderInfo.hIcon).Clone() as Icon;
User32.DestroyIcon(shFolderInfo.hIcon); //释放资源
return(icon);
}
private static Icon?GetIcon(string path, GetFileInfoFlags flags)
{
SHFILEINFO shinfo = new SHFILEINFO();
try
{
SHGetFileInfo(path, 0, ref shinfo,
(uint)Marshal.SizeOf(shinfo),
(uint)flags);
return(shinfo.hIcon.ToInt64() != 0x0 ? Icon.FromHandle(shinfo.hIcon) : null);
}
catch
{
return(null);
}
}
private static extern IntPtr SHGetFileInfo(string pszPath, uint dwFileAttributes, ref ShellFileInfo psfi, uint cbSizeFileInfo, GetFileInfoFlags uFlags);
public static IntPtr GetFileInfo(string filePath, uint fileAttributes, ref ShellFileInfo fileInfo, GetFileInfoFlags flags)
{
return(SHGetFileInfo(filePath, fileAttributes, ref fileInfo, (uint)Marshal.SizeOf(fileInfo), flags));
}
