mirror of
https://github.com/terrymacdonald/DisplayMagician.git
synced 2024-08-30 18:32:20 +00:00
5bdb2adba8
Well this took enough time! I have almost corrected all the issues with the icon parsing functions, but I still have a couple of edge cases to fix.
602 lines
18 KiB
C#
602 lines
18 KiB
C#
using System;
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using System.Runtime.InteropServices;
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using System.Drawing;
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using System.Windows;
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namespace DisplayMagician
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{
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class IconFromFile
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{
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private static readonly NLog.Logger logger = NLog.LogManager.GetCurrentClassLogger();
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// Constants that we need in the function call
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private const int SHGFI_ICON = 0x100;
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private const int SHGFI_SMALLICON = 0x1;
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private const int SHGFI_LARGEICON = 0x0;
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private const int SHIL_JUMBO = 0x4;
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private const int SHIL_EXTRALARGE = 0x2;
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// This structure will contain information about the file
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public struct SHFILEINFO
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{
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// Handle to the icon representing the file
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public IntPtr hIcon;
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// Index of the icon within the image list
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public int iIcon;
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// Various attributes of the file
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public uint dwAttributes;
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// Path to the file
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[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 256)]
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public string szDisplayName;
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// File type
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[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 80)]
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public string szTypeName;
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};
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[System.Runtime.InteropServices.DllImport("Kernel32.dll")]
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public static extern Boolean CloseHandle(IntPtr handle);
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#pragma warning disable 0649
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private struct IMAGELISTDRAWPARAMS
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{
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public int cbSize;
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public IntPtr himl;
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public int i;
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public IntPtr hdcDst;
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public int x;
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public int y;
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public int cx;
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public int cy;
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public int xBitmap; // x offest from the upperleft of bitmap
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public int yBitmap; // y offset from the upperleft of bitmap
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public int rgbBk;
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public int rgbFg;
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public int fStyle;
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public int dwRop;
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public int fState;
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public int Frame;
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public int crEffect;
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}
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#pragma warning restore 0649
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[StructLayout(LayoutKind.Sequential)]
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private struct IMAGEINFO
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{
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public IntPtr hbmImage;
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public IntPtr hbmMask;
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public int Unused1;
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public int Unused2;
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public Rect rcImage;
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}
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#region Private ImageList COM Interop (XP)
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[ComImportAttribute()]
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[GuidAttribute("46EB5926-582E-4017-9FDF-E8998DAA0950")]
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[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
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//helpstring("Image List"),
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interface IImageList
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{
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[PreserveSig]
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int Add(
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IntPtr hbmImage,
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IntPtr hbmMask,
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ref int pi);
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[PreserveSig]
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int ReplaceIcon(
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int i,
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IntPtr hicon,
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ref int pi);
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[PreserveSig]
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int SetOverlayImage(
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int iImage,
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int iOverlay);
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[PreserveSig]
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int Replace(
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int i,
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IntPtr hbmImage,
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IntPtr hbmMask);
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[PreserveSig]
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int AddMasked(
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IntPtr hbmImage,
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int crMask,
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ref int pi);
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[PreserveSig]
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int Draw(
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ref IMAGELISTDRAWPARAMS pimldp);
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[PreserveSig]
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int Remove(
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int i);
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[PreserveSig]
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int GetIcon(
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int i,
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int flags,
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ref IntPtr picon);
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[PreserveSig]
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int GetImageInfo(
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int i,
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ref IMAGEINFO pImageInfo);
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[PreserveSig]
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int Copy(
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int iDst,
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IImageList punkSrc,
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int iSrc,
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int uFlags);
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[PreserveSig]
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int Merge(
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int i1,
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IImageList punk2,
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int i2,
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int dx,
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int dy,
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ref Guid riid,
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ref IntPtr ppv);
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[PreserveSig]
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int Clone(
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ref Guid riid,
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ref IntPtr ppv);
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[PreserveSig]
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int GetImageRect(
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int i,
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ref Rect prc);
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[PreserveSig]
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int GetIconSize(
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ref int cx,
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ref int cy);
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[PreserveSig]
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int SetIconSize(
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int cx,
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int cy);
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[PreserveSig]
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int GetImageCount(
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ref int pi);
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[PreserveSig]
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int SetImageCount(
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int uNewCount);
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[PreserveSig]
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int SetBkColor(
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int clrBk,
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ref int pclr);
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[PreserveSig]
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int GetBkColor(
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ref int pclr);
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[PreserveSig]
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int BeginDrag(
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int iTrack,
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int dxHotspot,
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int dyHotspot);
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[PreserveSig]
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int EndDrag();
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[PreserveSig]
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int DragEnter(
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IntPtr hwndLock,
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int x,
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int y);
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[PreserveSig]
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int DragLeave(
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IntPtr hwndLock);
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[PreserveSig]
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int DragMove(
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int x,
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int y);
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[PreserveSig]
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int SetDragCursorImage(
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ref IImageList punk,
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int iDrag,
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int dxHotspot,
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int dyHotspot);
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[PreserveSig]
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int DragShowNolock(
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int fShow);
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/* [PreserveSig]
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int GetDragImage(
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ref Point ppt,
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ref Point pptHotspot,
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ref Guid riid,
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ref IntPtr ppv);*/
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[PreserveSig]
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int GetItemFlags(
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int i,
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ref int dwFlags);
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[PreserveSig]
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int GetOverlayImage(
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int iOverlay,
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ref int piIndex);
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};
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#endregion
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///
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/// SHGetImageList is not exported correctly in XP. See KB316931
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/// http://support.microsoft.com/default.aspx?scid=kb;EN-US;Q316931
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/// Apparently (and hopefully) ordinal 727 isn't going to change.
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///
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[DllImport("shell32.dll", EntryPoint = "#727")]
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private extern static int SHGetImageList(
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int iImageList,
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ref Guid riid,
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out IImageList ppv
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);
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// The signature of SHGetFileInfo (located in Shell32.dll)
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[DllImport("Shell32.dll")]
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public static extern int SHGetFileInfo(string pszPath, int dwFileAttributes, ref SHFILEINFO psfi, int cbFileInfo, uint uFlags);
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[DllImport("Shell32.dll")]
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public static extern int SHGetFileInfo(IntPtr pszPath, uint dwFileAttributes, ref SHFILEINFO psfi, int cbFileInfo, uint uFlags);
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[DllImport("shell32.dll", SetLastError = true)]
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static extern int SHGetSpecialFolderLocation(IntPtr hwndOwner, Int32 nFolder,
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ref IntPtr ppidl);
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[DllImport("user32")]
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public static extern int DestroyIcon(IntPtr hIcon);
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public struct Pair
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{
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public System.Drawing.Icon Icon { get; set; }
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public IntPtr IconHandleToDestroy { set; get; }
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}
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public static int DestroyIcon2(IntPtr hIcon)
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{
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return DestroyIcon(hIcon);
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}
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/*private static BitmapSource bitmap_source_of_icon(System.Drawing.Icon ic)
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{
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var ic2 = System.Windows.Interop.Imaging.CreateBitmapSourceFromHIcon(ic.Handle,
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System.Windows.Int32Rect.Empty,
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System.Windows.Media.Imaging.BitmapSizeOptions.FromEmptyOptions());
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ic2.Freeze();
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return ((BitmapSource)ic2);
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}*/
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/*public static BitmapSource SystemIcon(bool small, ShellLib.ShellApi.CSIDL csidl)
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{
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IntPtr pidlTrash = IntPtr.Zero;
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int hr = SHGetSpecialFolderLocation(IntPtr.Zero, (int)csidl, ref pidlTrash);
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Debug.Assert(hr == 0);
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SHFILEINFO shinfo = new SHFILEINFO();
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uint SHGFI_USEFILEATTRIBUTES = 0x000000010;
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// Get a handle to the large icon
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uint flags;
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uint SHGFI_PIDL = 0x000000008;
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if (!small)
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{
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flags = SHGFI_PIDL | SHGFI_ICON | SHGFI_LARGEICON | SHGFI_USEFILEATTRIBUTES;
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}
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else
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{
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flags = SHGFI_PIDL | SHGFI_ICON | SHGFI_SMALLICON | SHGFI_USEFILEATTRIBUTES;
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}
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var res = SHGetFileInfo(pidlTrash, 0, ref shinfo, Marshal.SizeOf(shinfo), flags);
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Debug.Assert(res != 0);
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var myIcon = System.Drawing.Icon.FromHandle(shinfo.hIcon);
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Marshal.FreeCoTaskMem(pidlTrash);
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var bs = bitmap_source_of_icon(myIcon);
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myIcon.Dispose();
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bs.Freeze(); // importantissimo se no fa memory leak
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DestroyIcon(shinfo.hIcon);
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CloseHandle(shinfo.hIcon);
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return bs;
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}*/
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/* public static BitmapSource GetSmallBitmapFromFile(string FileName, bool small, bool checkDisk, bool addOverlay)
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{
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SHFILEINFO shinfo = new SHFILEINFO();
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uint SHGFI_USEFILEATTRIBUTES = 0x000000010;
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uint SHGFI_LINKOVERLAY = 0x000008000;
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uint flags;
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if (small)
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{
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flags = SHGFI_ICON | SHGFI_SMALLICON;
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}
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else
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{
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flags = SHGFI_ICON | SHGFI_LARGEICON;
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}
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if (!checkDisk)
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flags |= SHGFI_USEFILEATTRIBUTES;
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if (addOverlay)
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flags |= SHGFI_LINKOVERLAY;
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var res = SHGetFileInfo(FileName, 0, ref shinfo, Marshal.SizeOf(shinfo), flags);
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if (res == 0)
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{
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throw (new System.IO.FileNotFoundException());
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}
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var myIcon = System.Drawing.Icon.FromHandle(shinfo.hIcon);
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var bs = bitmap_source_of_icon(myIcon);
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myIcon.Dispose();
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bs.Freeze(); // importantissimo se no fa memory leak
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DestroyIcon(shinfo.hIcon);
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CloseHandle(shinfo.hIcon);
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return bs;
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}*/
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public static Bitmap GetSmallBitmapFromFile(string FileName, bool small, bool checkDisk, bool addOverlay)
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{
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SHFILEINFO shinfo = new SHFILEINFO();
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uint SHGFI_USEFILEATTRIBUTES = 0x000000010;
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uint SHGFI_LINKOVERLAY = 0x000008000;
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uint flags;
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if (small)
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{
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flags = SHGFI_ICON | SHGFI_SMALLICON;
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}
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else
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{
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flags = SHGFI_ICON | SHGFI_LARGEICON;
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}
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if (!checkDisk)
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flags |= SHGFI_USEFILEATTRIBUTES;
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if (addOverlay)
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flags |= SHGFI_LINKOVERLAY;
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var res = SHGetFileInfo(FileName, 0, ref shinfo, Marshal.SizeOf(shinfo), flags);
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if (res == 0)
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{
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throw (new System.IO.FileNotFoundException());
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}
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var myIcon = System.Drawing.Icon.FromHandle(shinfo.hIcon);
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Bitmap bm = myIcon.ToBitmap();
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myIcon.Dispose();
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DestroyIcon(shinfo.hIcon);
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//CloseHandle(shinfo.hIcon);
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return bm;
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}
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/*public static BitmapSource GetLargeBitmapSourceFromFile(string FileName, bool jumbo, bool checkDisk)
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{
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SHFILEINFO shinfo = new SHFILEINFO();
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uint SHGFI_USEFILEATTRIBUTES = 0x000000010;
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uint SHGFI_SYSICONINDEX = 0x4000;
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int FILE_ATTRIBUTE_NORMAL = 0x80;
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uint flags;
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flags = SHGFI_SYSICONINDEX;
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if (!checkDisk) // This does not seem to work. If I try it, a folder icon is always returned.
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flags |= SHGFI_USEFILEATTRIBUTES;
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var res = SHGetFileInfo(FileName, FILE_ATTRIBUTE_NORMAL, ref shinfo, Marshal.SizeOf(shinfo), flags);
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if (res == 0)
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{
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throw (new System.IO.FileNotFoundException());
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}
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var iconIndex = shinfo.iIcon;
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// Get the System IImageList object from the Shell:
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Guid iidImageList = new Guid("46EB5926-582E-4017-9FDF-E8998DAA0950");
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IImageList iml;
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int size = jumbo ? SHIL_JUMBO : SHIL_EXTRALARGE;
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var hres = SHGetImageList(size, ref iidImageList, out iml); // writes iml
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//if (hres == 0)
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//{
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// throw (new System.Exception("Error SHGetImageList"));
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//}
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IntPtr hIcon = IntPtr.Zero;
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int ILD_TRANSPARENT = 1;
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hres = iml.GetIcon(iconIndex, ILD_TRANSPARENT, ref hIcon);
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//if (hres == 0)
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//{
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// throw (new System.Exception("Error iml.GetIcon"));
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//}
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var myIcon = System.Drawing.Icon.FromHandle(hIcon);
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var bs = bitmap_source_of_icon(myIcon);
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myIcon.Dispose();
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bs.Freeze(); // very important to avoid memory leak
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DestroyIcon(hIcon);
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CloseHandle(hIcon);
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return bs;
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}*/
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public static Icon GetSmallIconFromFile(string FileName, bool small, bool checkDisk, bool addOverlay)
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{
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SHFILEINFO shinfo = new SHFILEINFO();
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uint SHGFI_USEFILEATTRIBUTES = 0x000000010;
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uint SHGFI_LINKOVERLAY = 0x000008000;
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uint flags;
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if (small)
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{
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flags = SHGFI_ICON | SHGFI_SMALLICON;
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}
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else
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{
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flags = SHGFI_ICON | SHGFI_LARGEICON;
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}
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if (!checkDisk)
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flags |= SHGFI_USEFILEATTRIBUTES;
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if (addOverlay)
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flags |= SHGFI_LINKOVERLAY;
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var res = SHGetFileInfo(FileName, 0, ref shinfo, Marshal.SizeOf(shinfo), flags);
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if (res == 0)
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{
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throw (new System.IO.FileNotFoundException());
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}
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var myIcon = System.Drawing.Icon.FromHandle(shinfo.hIcon);
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DestroyIcon(shinfo.hIcon);
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//CloseHandle(shinfo.hIcon);
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return myIcon;
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}
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public static Icon GetLargeIconFromFile(string FileName, bool jumbo, bool checkDisk)
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{
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SHFILEINFO shinfo = new SHFILEINFO();
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uint SHGFI_USEFILEATTRIBUTES = 0x000000010;
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uint SHGFI_SYSICONINDEX = 0x4000;
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int FILE_ATTRIBUTE_NORMAL = 0x80;
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uint flags;
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flags = SHGFI_SYSICONINDEX;
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if (!checkDisk) // This does not seem to work. If I try it, a folder icon is always returned.
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flags |= SHGFI_USEFILEATTRIBUTES;
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var res = SHGetFileInfo(FileName, FILE_ATTRIBUTE_NORMAL, ref shinfo, Marshal.SizeOf(shinfo), flags);
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if (res == 0)
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{
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throw (new System.IO.FileNotFoundException());
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}
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var iconIndex = shinfo.iIcon;
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// Get the System IImageList object from the Shell:
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Guid iidImageList = new Guid("46EB5926-582E-4017-9FDF-E8998DAA0950");
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int size = jumbo ? SHIL_JUMBO : SHIL_EXTRALARGE;
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var hres = SHGetImageList(size, ref iidImageList, out IImageList iml); // writes iml
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//if (hres == 0)
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//{
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// throw (new System.Exception("Error SHGetImageList"));
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//}
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IntPtr hIcon = IntPtr.Zero;
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int ILD_TRANSPARENT = 1;
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hres = iml.GetIcon(iconIndex, ILD_TRANSPARENT, ref hIcon);
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//if (hres == 0)
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//{
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// throw (new System.Exception("Error iml.GetIcon"));
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//}
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var myIcon = System.Drawing.Icon.FromHandle(hIcon);
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//myIcon.Dispose();
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//DestroyIcon(hIcon);
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//CloseHandle(hIcon);
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return myIcon;
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}
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public static Bitmap GetLargeBitmapFromFile(string FileName, bool jumbo, bool checkDisk)
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{
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SHFILEINFO shinfo = new SHFILEINFO();
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uint SHGFI_USEFILEATTRIBUTES = 0x000000010;
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uint SHGFI_SYSICONINDEX = 0x4000;
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int FILE_ATTRIBUTE_NORMAL = 0x80;
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uint flags;
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flags = SHGFI_SYSICONINDEX;
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if (!checkDisk) // This does not seem to work. If I try it, a folder icon is always returned.
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flags |= SHGFI_USEFILEATTRIBUTES;
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var res = SHGetFileInfo(FileName, FILE_ATTRIBUTE_NORMAL, ref shinfo, Marshal.SizeOf(shinfo), flags);
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if (res == 0)
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{
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throw (new System.IO.FileNotFoundException());
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}
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var iconIndex = shinfo.iIcon;
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// Get the System IImageList object from the Shell:
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Guid iidImageList = new Guid("46EB5926-582E-4017-9FDF-E8998DAA0950");
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|
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int size = jumbo ? SHIL_JUMBO : SHIL_EXTRALARGE;
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var hres = SHGetImageList(size, ref iidImageList, out IImageList iml); // writes iml
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//if (hres == 0)
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|
//{
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// throw (new System.Exception("Error SHGetImageList"));
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|
//}
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IntPtr hIcon = IntPtr.Zero;
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int ILD_TRANSPARENT = 1;
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hres = iml.GetIcon(iconIndex, ILD_TRANSPARENT, ref hIcon);
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|
/*if (hres == 0)
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|
{
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|
return new Bitmap(1, 1);
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|
}*/
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|
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var myIcon = System.Drawing.Icon.FromHandle(hIcon);
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Bitmap bm = myIcon.ToBitmap();
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|
myIcon.Dispose();
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|
DestroyIcon(hIcon);
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|
//CloseHandle(hIcon);
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|
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|
return bm;
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|
|
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}
|
|
}
|
|
}
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