WinAPI.cs

using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using System.Text;

namespace SecureDesktop_GUI
{
    public class WinAPI
    {
        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
        public struct SHFILEINFO
        {
            public IntPtr hIcon;
            public int iIcon;
            public uint dwAttributes;
            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)]
            public string szDisplayName;
            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 80)]
            public string szTypeName;
        }

        [DllImport("user32.dll", SetLastError = true)]
        public static extern bool DestroyIcon(IntPtr hIcon);

        [DllImport("shell32")]
        public static extern IntPtr SHGetFileInfo(
            string pszPath,
            uint dwFileAttributes,
            ref SHFILEINFO psfi,
            uint cbFileInfo,
            uint uFlags);

        public const int FILE_ATTRIBUTE_NORMAL = 0x80;

        public const int
        SHGFI_SYSICONINDEX = 0x4000,
        SHGFI_JUMBO = 0x4;

        public const int CREATE_NO_WINDOW = 0x08000000;

        [DllImport("shell32.dll", EntryPoint = "#727")]
        public extern static int SHGetImageList(int iImageList, ref Guid riid, out IImageList ppv);

        [StructLayout(LayoutKind.Sequential)]
        public struct RECT
        {
            public int left, top, right, bottom;
        }

        [StructLayout(LayoutKind.Sequential)]
        public struct POINT
        {
            int x;
            int y;
        }

        [StructLayout(LayoutKind.Sequential)]
        public struct IMAGELISTDRAWPARAMS
        {
            public int cbSize;
            public IntPtr himl;
            public int i;
            public IntPtr hdcDst;
            public int x;
            public int y;
            public int cx;
            public int cy;
            public int xBitmap;    // x offest from the upperleft of bitmap
            public int yBitmap;    // y offset from the upperleft of bitmap
            public int rgbBk;
            public int rgbFg;
            public int fStyle;
            public int dwRop;
            public int fState;
            public int Frame;
            public int crEffect;
        }

        [StructLayout(LayoutKind.Sequential)]
        public struct IMAGEINFO
        {
            public IntPtr hbmImage;
            public IntPtr hbmMask;
            public int Unused1;
            public int Unused2;
            public RECT rcImage;
        }
        [ComImportAttribute()]
        [GuidAttribute("46EB5926-582E-4017-9FDF-E8998DAA0950")]
        [InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
        public interface IImageList
        {
            [PreserveSig]
            int Add(
            IntPtr hbmImage,
            IntPtr hbmMask,
            ref int pi);

            [PreserveSig]
            int ReplaceIcon(
            int i,
            IntPtr hicon,
            ref int pi);

            [PreserveSig]
            int SetOverlayImage(
            int iImage,
            int iOverlay);

            [PreserveSig]
            int Replace(
            int i,
            IntPtr hbmImage,
            IntPtr hbmMask);

            [PreserveSig]
            int AddMasked(
            IntPtr hbmImage,
            int crMask,
            ref int pi);

            [PreserveSig]
            int Draw(
            ref IMAGELISTDRAWPARAMS pimldp);

            [PreserveSig]
            int Remove(
        int i);

            [PreserveSig]
            int GetIcon(
            int i,
            int flags,
            ref IntPtr picon);

            [PreserveSig]
            int GetImageInfo(
            int i,
            ref IMAGEINFO pImageInfo);

            [PreserveSig]
            int Copy(
            int iDst,
            IImageList punkSrc,
            int iSrc,
            int uFlags);

            [PreserveSig]
            int Merge(
            int i1,
            IImageList punk2,
            int i2,
            int dx,
            int dy,
            ref Guid riid,
            ref IntPtr ppv);

            [PreserveSig]
            int Clone(
            ref Guid riid,
            ref IntPtr ppv);

            [PreserveSig]
            int GetImageRect(
            int i,
            ref RECT prc);

            [PreserveSig]
            int GetIconSize(
            ref int cx,
            ref int cy);

            [PreserveSig]
            int SetIconSize(
            int cx,
            int cy);

            [PreserveSig]
            int GetImageCount(
        ref int pi);

            [PreserveSig]
            int SetImageCount(
            int uNewCount);

            [PreserveSig]
            int SetBkColor(
            int clrBk,
            ref int pclr);

            [PreserveSig]
            int GetBkColor(
            ref int pclr);

            [PreserveSig]
            int BeginDrag(
            int iTrack,
            int dxHotspot,
            int dyHotspot);

            [PreserveSig]
            int EndDrag();

            [PreserveSig]
            int DragEnter(
            IntPtr hwndLock,
            int x,
            int y);

            [PreserveSig]
            int DragLeave(
            IntPtr hwndLock);

            [PreserveSig]
            int DragMove(
            int x,
            int y);

            [PreserveSig]
            int SetDragCursorImage(
            ref IImageList punk,
            int iDrag,
            int dxHotspot,
            int dyHotspot);

            [PreserveSig]
            int DragShowNolock(
            int fShow);

            [PreserveSig]
            int GetDragImage(
            ref POINT ppt,
            ref POINT pptHotspot,
            ref Guid riid,
            ref IntPtr ppv);

            [PreserveSig]
            int GetItemFlags(
            int i,
            ref int dwFlags);

            [PreserveSig]
            int GetOverlayImage(
            int iOverlay,
            ref int piIndex);
        };
        
        [DllImport("kernel32.dll")]
        public static extern bool CreateProcess(
            string lpApplicationName, string lpCommandLine, IntPtr lpProcessAttributes, IntPtr lpThreadAttributes, bool bInheritHandles,
            uint dwCreationFlags, IntPtr lpEnvironment, string lpCurrentDirectory, ref STARTUPINFO lpStartupInfo,
            out PROCESS_INFORMATION lpProcessInformation);

        [DllImport("kernel32.dll", SetLastError = true)]
        [return: MarshalAs(UnmanagedType.Bool)]
        public static extern bool GetExitCodeProcess(IntPtr hProcess, out uint lpExitCode);

        public struct PROCESS_INFORMATION
        {
            public IntPtr hProcess;
            public IntPtr hThread;
            public uint dwProcessId;
            public uint dwThreadId;
        }

        public struct STARTUPINFO
        {
            public uint cb;
            public string lpReserved;
            public string lpDesktop;
            public string lpTitle;
            public uint dwX;
            public uint dwY;
            public uint dwXSize;
            public uint dwYSize;
            public uint dwXCountChars;
            public uint dwYCountChars;
            public uint dwFillAttribute;
            public uint dwFlags;
            public short wShowWindow;
            public short cbReserved2;
            public IntPtr lpReserved2;
            public IntPtr hStdInput;
            public IntPtr hStdOutput;
            public IntPtr hStdError;
        }
    }
}