我正在使用此代码进行扫描，
此代码在 32 位机器上运行良好，但我正在将我的应用程序切换到 64 位机器，但出现错误。我搜索了很多并找到了许多解决方案，
我发现可以编译的常见解决方案应用程序在 32 位机器上，但它不会提高我的应用程序性能，所以我不想在 64 位机器上使用这个解决方案。
错误是：
试图加载格式不正确的程序。（来自 HRESULT 的异常：0x8007000B）
代码是：
namespace TwainLib
{
public enum TwainCommand
{
Not = -1,
Null = 0,
TransferReady = 1,
CloseRequest = 2,
CloseOk = 3,
DeviceEvent = 4
}
public class Twain
{
private const short CountryUSA = 1;
private const short LanguageUSA = 13;
public Twain()
{
appid = new TwIdentity();
appid.Id = IntPtr.Zero;
appid.Version.MajorNum = 1;
appid.Version.MinorNum = 1;
appid.Version.Language = LanguageUSA;
appid.Version.Country = CountryUSA;
appid.Version.Info = "Hack 1";
appid.ProtocolMajor = TwProtocol.Major;
appid.ProtocolMinor = TwProtocol.Minor;
appid.SupportedGroups = (int)(TwDG.Image | TwDG.Control);
appid.Manufacturer = "NETMaster";
appid.ProductFamily = "Freeware";
appid.ProductName = "Hack";
srcds = new TwIdentity();
srcds.Id = IntPtr.Zero;
evtmsg.EventPtr = Marshal.AllocHGlobal(Marshal.SizeOf(winmsg));
}
~Twain()
{
Marshal.FreeHGlobal(evtmsg.EventPtr);
}
public void Init(IntPtr hwndp)
{
Finish();
TwRC rc = DSMparent(appid, IntPtr.Zero, TwDG.Control, TwDAT.Parent, TwMSG.OpenDSM, ref hwndp);
if (rc == TwRC.Success)
{
rc = DSMident(appid, IntPtr.Zero, TwDG.Control, TwDAT.Identity, TwMSG.GetDefault, srcds);
if (rc == TwRC.Success)
hwnd = hwndp;
else
rc = DSMparent(appid, IntPtr.Zero, TwDG.Control, TwDAT.Parent, TwMSG.CloseDSM, ref hwndp);
}
}
public void Select()
{
TwRC rc;
CloseSrc();
if (appid.Id == IntPtr.Zero)
{
Init(hwnd);
if (appid.Id == IntPtr.Zero)
return;
}
rc = DSMident(appid, IntPtr.Zero, TwDG.Control, TwDAT.Identity, TwMSG.UserSelect, srcds);
}
/// <summary>
/// Returns a list of twain sources
/// </summary>
/// <returns></returns>
public IEnumerable<TwIdentity> GetSources()
{
TwRC rc;
CloseSrc();
if (appid.Id == IntPtr.Zero)
{
Init(hwnd);
if (appid.Id == IntPtr.Zero)
return null;
}
List<TwIdentity> sources = new List<TwIdentity>();
TwIdentity identity = new TwIdentity();
rc = DSMident(appid, IntPtr.Zero, TwDG.Control, TwDAT.Identity, TwMSG.GetFirst, identity);
while (rc == TwRC.Success)
{
sources.Add(identity);
identity = new TwIdentity();
rc = DSMident(appid, IntPtr.Zero, TwDG.Control, TwDAT.Identity, TwMSG.GetNext, identity);
}
return sources;
}
/// <summary>
/// Sets the source from which images will be acquired
/// </summary>
/// <param name="Source_p"></param>
public void SetSource(TwIdentity Source_p)
{
srcds = Source_p;
}
public void Acquire()
{
TwRC rc;
CloseSrc();
if (appid.Id == IntPtr.Zero)
{
Init(hwnd);
if (appid.Id == IntPtr.Zero)
return;
}
rc = DSMident(appid, IntPtr.Zero, TwDG.Control, TwDAT.Identity, TwMSG.OpenDS, srcds);
if (rc != TwRC.Success)
return;
TwCapability cap = new TwCapability(TwCap.XferCount, 1);
rc = DScap(appid, srcds, TwDG.Control, TwDAT.Capability, TwMSG.Set, cap);
if (rc != TwRC.Success)
{
CloseSrc();
return;
}
TwUserInterface guif = new TwUserInterface();
guif.ShowUI = 1;
guif.ModalUI = 1;
guif.ParentHand = hwnd;
rc = DSuserif(appid, srcds, TwDG.Control, TwDAT.UserInterface, TwMSG.EnableDS, guif);
if (rc != TwRC.Success)
{
CloseSrc();
return;
}
}
public List<IntPtr> TransferPictures()
{
List<IntPtr> pics = new List<IntPtr>();
if (srcds.Id == IntPtr.Zero)
return pics;
TwRC rc;
IntPtr hbitmap = IntPtr.Zero;
TwPendingXfers pxfr = new TwPendingXfers();
do
{
pxfr.Count = 0;
hbitmap = IntPtr.Zero;
TwImageInfo iinf = new TwImageInfo();
rc = DSiinf(appid, srcds, TwDG.Image, TwDAT.ImageInfo, TwMSG.Get, iinf);
if (rc != TwRC.Success)
{
CloseSrc();
return pics;
}
rc = DSixfer(appid, srcds, TwDG.Image, TwDAT.ImageNativeXfer, TwMSG.Get, ref hbitmap);
if (rc != TwRC.XferDone)
{
CloseSrc();
return pics;
}
rc = DSpxfer(appid, srcds, TwDG.Control, TwDAT.PendingXfers, TwMSG.EndXfer, pxfr);
if (rc != TwRC.Success)
{
CloseSrc();
return pics;
}
pics.Add(hbitmap);
}
while (pxfr.Count != 0);
rc = DSpxfer(appid, srcds, TwDG.Control, TwDAT.PendingXfers, TwMSG.Reset, pxfr);
return pics;
}
public TwainCommand PassMessage(ref Message m)
{
if (srcds.Id == IntPtr.Zero)
return TwainCommand.Not;
int pos = GetMessagePos();
winmsg.hwnd = m.HWnd;
winmsg.message = m.Msg;
winmsg.wParam = m.WParam;
winmsg.lParam = m.LParam;
winmsg.time = GetMessageTime();
winmsg.x = (short)pos;
winmsg.y = (short)(pos >> 16);
Marshal.StructureToPtr(winmsg, evtmsg.EventPtr, false);
evtmsg.Message = 0;
TwRC rc = DSevent(appid, srcds, TwDG.Control, TwDAT.Event, TwMSG.ProcessEvent, ref evtmsg);
if (rc == TwRC.NotDSEvent)
return TwainCommand.Not;
if (evtmsg.Message == (short)TwMSG.XFerReady)
return TwainCommand.TransferReady;
if (evtmsg.Message == (short)TwMSG.CloseDSReq)
return TwainCommand.CloseRequest;
if (evtmsg.Message == (short)TwMSG.CloseDSOK)
return TwainCommand.CloseOk;
if (evtmsg.Message == (short)TwMSG.DeviceEvent)
return TwainCommand.DeviceEvent;
return TwainCommand.Null;
}
public void CloseSrc()
{
TwRC rc;
if (srcds.Id != IntPtr.Zero)
{
TwUserInterface guif = new TwUserInterface();
rc = DSuserif(appid, srcds, TwDG.Control, TwDAT.UserInterface, TwMSG.DisableDS, guif);
rc = DSMident(appid, IntPtr.Zero, TwDG.Control, TwDAT.Identity, TwMSG.CloseDS, srcds);
}
}
public void Finish()
{
TwRC rc;
CloseSrc();
if (appid.Id != IntPtr.Zero)
rc = DSMparent(appid, IntPtr.Zero, TwDG.Control, TwDAT.Parent, TwMSG.CloseDSM, ref hwnd);
appid.Id = IntPtr.Zero;
}
private IntPtr hwnd;
private TwIdentity appid;
private TwIdentity srcds;
private TwEvent evtmsg;
private WINMSG winmsg;
// ------ DSM entry point DAT_ variants:
[DllImport("twain_32.dll", EntryPoint = "#1")]
private static extern TwRC DSMparent([In, Out] TwIdentity origin, IntPtr zeroptr, TwDG dg, TwDAT dat, TwMSG msg, ref IntPtr refptr);
[DllImport("twain_32.dll", EntryPoint = "#1")]
private static extern TwRC DSMident([In, Out] TwIdentity origin, IntPtr zeroptr, TwDG dg, TwDAT dat, TwMSG msg, [In, Out] TwIdentity idds);
[DllImport("twain_32.dll", EntryPoint = "#1")]
private static extern TwRC DSMstatus([In, Out] TwIdentity origin, IntPtr zeroptr, TwDG dg, TwDAT dat, TwMSG msg, [In, Out] TwStatus dsmstat);
// ------ DSM entry point DAT_ variants to DS:
[DllImport("twain_32.dll", EntryPoint = "#1")]
private static extern TwRC DSuserif([In, Out] TwIdentity origin, [In, Out] TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg, TwUserInterface guif);
[DllImport("twain_32.dll", EntryPoint = "#1")]
private static extern TwRC DSevent([In, Out] TwIdentity origin, [In, Out] TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg, ref TwEvent evt);
[DllImport("twain_32.dll", EntryPoint = "#1")]
private static extern TwRC DSstatus([In, Out] TwIdentity origin, [In] TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg, [In, Out] TwStatus dsmstat);
[DllImport("twain_32.dll", EntryPoint = "#1")]
private static extern TwRC DScap([In, Out] TwIdentity origin, [In] TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg, [In, Out] TwCapability capa);
[DllImport("twain_32.dll", EntryPoint = "#1")]
private static extern TwRC DSiinf([In, Out] TwIdentity origin, [In] TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg, [In, Out] TwImageInfo imginf);
[DllImport("twain_32.dll", EntryPoint = "#1")]
private static extern TwRC DSixfer([In, Out] TwIdentity origin, [In] TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg, ref IntPtr hbitmap);
[DllImport("twain_32.dll", EntryPoint = "#1")]
private static extern TwRC DSpxfer([In, Out] TwIdentity origin, [In] TwIdentity dest, TwDG dg, TwDAT dat, TwMSG msg, [In, Out] TwPendingXfers pxfr);
[DllImport("kernel32.dll", ExactSpelling = true)]
internal static extern IntPtr GlobalAlloc(int flags, int size);
[DllImport("kernel32.dll", ExactSpelling = true)]
internal static extern IntPtr GlobalLock(IntPtr handle);
[DllImport("kernel32.dll", ExactSpelling = true)]
internal static extern bool GlobalUnlock(IntPtr handle);
[DllImport("kernel32.dll", ExactSpelling = true)]
internal static extern IntPtr GlobalFree(IntPtr handle);
[DllImport("user32.dll", ExactSpelling = true)]
private static extern int GetMessagePos();
[DllImport("user32.dll", ExactSpelling = true)]
private static extern int GetMessageTime();
[DllImport("gdi32.dll", ExactSpelling = true)]
private static extern int GetDeviceCaps(IntPtr hDC, int nIndex);
[DllImport("gdi32.dll", CharSet = CharSet.Auto)]
private static extern IntPtr CreateDC(string szdriver, string szdevice, string szoutput, IntPtr devmode);
[DllImport("gdi32.dll", ExactSpelling = true)]
private static extern bool DeleteDC(IntPtr hdc);
public static int ScreenBitDepth
{
get
{
IntPtr screenDC = CreateDC("DISPLAY", null, null, IntPtr.Zero);
int bitDepth = GetDeviceCaps(screenDC, 12);
bitDepth *= GetDeviceCaps(screenDC, 14);
DeleteDC(screenDC);
return bitDepth;
}
}
[StructLayout(LayoutKind.Sequential, Pack = 4)]
internal struct WINMSG
{
public IntPtr hwnd;
public int message;
public IntPtr wParam;
public IntPtr lParam;
public int time;
public int x;
public int y;
}
} // class Twain
}
根据我的分析，这个错误是由于 64 位机器而发生的。请为此错误提出另一种解决方案。