cpp_jni_org.scavino.zip_scavino_twain

// Modified scavino.org version #define VERSION 110 // version number, times 100. #include <windows.h> #include <assert.h> #include <memory.h> // memset, memcpy #include <vfw.h> #include "ijl.h" #include "commdlg.h" #include "twain.h" #include "jtwain.h" //------------ Constants and Macros #define STATIC static #define INT32 int #define DATAGROUP unsigned #define DSM_FILENAME "TWAIN_32.DLL" #define DSM_ENTRYPOINT "DSM_Entry" #define IsValidHandle(h) (h!=NULL) #define HUGEWRITE(fh, pb, bc) ((INT32)_lwrite(fh, pb, bc)) #define FMEMSET(p, v, n) memset(p, v, n); #define FMEMCPY(p, q, n) memcpy(p, q, n); typedef enum { ED_NONE, ED_START_TRIPLET_ERRS, ED_CAP_GET, // MSG_GET triplet on a capability failed ED_CAP_SET, // MSG_SET triplet on capability failed ED_DSM_FAILURE, // TWAIN DSM returned TWRC_FAILURE ED_DS_FAILURE, // source returned TWRC_FAILURE ED_END_TRIPLET_ERRS, ED_NOT_STATE_4, // operation invoked in wrong state ED_NULL_HCON, // MSG_GET returned a null container handle ED_BAD_HCON, // MSG_GET returned an invalid/unlockable container handle ED_BAD_CONTYPE, // returned container ConType is not valid. ED_BAD_ITEMTYPE, // returned container ItemType is not valid. ED_CAP_GET_EMPTY, // returned container has 0 items. ED_CAP_SET_EMPTY, // trying to restrict a cap to empty set } ErrorDetail; const char *pszErrDescrip[] = { "[no details available]", "", "DAT_CAPABILITY/MSG_GET failed", "DAT_CAPABILITY/MSG_SET failed", "Source Manager operation failed", "DataSource operation failed", "", "TWAIN session not in State 4 (Source Open)", "MSG_GET returned a NULL container handle", "MSG_GET returned an invalid container handle", "Returned container is not valid type", "Returned container has invalid ItemType", "Returned container is empty", "App and source found NO values in common", }; const char *pszRC[] = { "TWRC_SUCCESS", "TWRC_FAILURE", "TWRC_CHECKSTATUS ('tried hard')", "TWRC_CANCEL", "TWRC_DSEVENT", "TWRC_NOTDSEVENT", "TWRC_XFERDONE", "TWRC_ENDOFLIST", "TWRC_INFONOTSUPPORTED", "TWRC_DATANOTAVAILABLE" }; const char *pszCC[] = { "TWCC_SUCCESS", "TWCC_BUMMER (Failure due to unknown causes)", "TWCC_LOWMEMORY", "TWCC_NODS (No Data Source)", "TWCC_MAXCONNECTIONS (DS is connected to max possible apps)", "TWCC_OPERATIONERROR (DS/DSM reported error, app shouldn't)", "TWCC_BADCAP (Unknown capability)", "7 (undefined)", "8 (undefined)", "TWCC_BADPROTOCOL (Unrecognized triplet)", "TWCC_BADVALUE (Data parameter out of range)", "TWCC_SEQERROR (Triplet out of sequence)", "TWCC_BADDEST (Unknown dest. App/Src in DSM_Entry)", "TWCC_CAPUNSUPPORTED (Cap not supported by source)", "TWCC_CAPBADOPERATION (Operation not supported by cap)", "TWCC_CAPSEQERROR (Cap has dependancy on other cap)", }; const char szInsuffMem[] = "Insufficient Memory"; // error message #define WM_AUTOSCAN 0x7fa0 // semi-random number // For the JPEG Support #define Lock(hdib) ((LPBITMAPINFOHEADER)GlobalLock(hdib)) #define Unlock(hdib) GlobalUnlock(hdib) // Make this Dynamic static int nJpegQuality = 75; // End - Intel JPEG Library globals //------------ Global variables STATIC int iAvailable; // TWAIN available: 0:unknown, -1:No, 1:Yes STATIC int nState = 1; // TWAIN state (per the standard) STATIC int nErrDetail; // detailed error code STATIC unsigned nErrRC, nErrCC; // result code and condition code for last error STATIC char szMsg[256]; // scratch buffer for messages STATIC DSMENTRYPROC pDSM_Entry; // entry point of Data Source Manager (TWAIN.DLL) // Modified by Hugo Scavino //STATIC HANDLE hDSMLib; // handle of DSM STATIC HMODULE hDSMLib; // handle of DSM STATIC TW_IDENTITY AppId = { // application identity structure 0, // Id, filled in by DSM { 1, 0, TWLG_USA, TWCY_USA, "Unspecified Version"}, // Version TWON_PROTOCOLMAJOR, TWON_PROTOCOLMINOR, DG_IMAGE | DG_CONTROL, "TWAIN Mfg", // Mfg "TWAIN Application Family", // Family "JTWAIN Client Product" // Product }; STATIC TW_IDENTITY SourceId; // source identity structure STATIC BOOL bHideUI; // allow source u/i to be hidden STATIC TW_USERINTERFACE twUI; STATIC TW_PENDINGXFERS pendingXfers; STATIC BOOL bBreakModalLoop; // flag to end modal event loop STATIC unsigned nMemBuffer; // memory transfer buffer counter STATIC HANDLE hDib; // bitmap returned by native transfer STATIC TW_INT16 rc; // result code STATIC HINSTANCE hinstLib; // instance handle for this DLL STATIC HWND hwndProxy; // proxy window //------------ Forward declarations void WINAPI TWAIN_WaitForXfer(HWND hwnd); static void SetState(int n); // RMOVED BY SCAVINO //static HWND GetValidHwnd(HWND hwnd); static HWND CreateProxyWindow(void); static TW_UINT32 Intersect(TW_UINT32 wMask, TW_UINT32 nItems, TW_UINT16 far *pItem); static unsigned FindIndex16(TW_UINT32 nItems, TW_UINT16 far *plist, TW_UINT16 uVal, unsigned nDefault); static int RecordError(ErrorDetail ed); static double Fix32ToFloat(TW_FIX32 fix); static void NativeXferHandler(void); static void FileXferHandler(void); static void MemoryXferHandler(void); static void DoOneTransfer(void); //------------ Public functions BOOL WINAPI DllMain(HINSTANCE module, ULONG ulEvent, LPVOID lpReserved) { // ignore warning lpReserved = lpReserved; module = module; switch (ulEvent) { case DLL_PROCESS_DETACH: //TWAIN_UnloadSourceManager(); break; case DLL_PROCESS_ATTACH: #ifdef DEBUG wsprintf(szMsg, "sizeof (TW_IDENTITY) == %d\n", sizeof (TW_IDENTITY)); OutputDebugString(szMsg); #endif assert(sizeof (TW_IDENTITY) == 156); break; default: break; } return TRUE; } //-- Record application information void WINAPI TWAIN_RegisterApp( int nMajorNum, // major and incremental revision of application. int nMinorNum, // e.g. version 4.5: nMajorNum = 4, nMinorNum = 5 int nLanguage, // (human) language (use TWLG_xxx from TWAIN.H) int nCountry, // country (use TWCY_xxx from TWAIN.H) LPSTR lpszVersion, // version info string e.g. "1.0b3 Beta release" LPSTR lpszMfg, // name of mfg/developer e.g. "Crazbat Software" LPSTR lpszFamily, // product family e.g. "BitStomper" LPSTR lpszProduct) // specific product e.g. "BitStomper Deluxe Pro" { AppId.Id = 0; // init to 0, but Source Manager will assign real value AppId.Version.MajorNum = (TW_UINT16)nMajorNum; AppId.Version.MinorNum = (TW_UINT16)nMinorNum; AppId.Version.Language = (TW_UINT16)nLanguage; AppId.Version.Country = (TW_UINT16)nCountry; lstrcpy (AppId.Version.Info, lpszVersion); AppId.ProtocolMajor = TWON_PROTOCOLMAJOR; AppId.ProtocolMinor = TWON_PROTOCOLMINOR; AppId.SupportedGroups = DG_IMAGE | DG_CONTROL; lstrcpy (AppId.Manufacturer, lpszMfg); lstrcpy (AppId.ProductFamily, lpszFamily); lstrcpy (AppId.ProductName, lpszProduct); } // TWAIN_RegisterApp int WINAPI TWAIN_SelectImageSource(HWND hwnd) { int fSuccess = FALSE; int nEntryState = nState; if (nState >= TWAIN_SM_OPEN || TWAIN_OpenSourceManager(hwnd)) { TW_IDENTITY NewSourceId; FMEMSET(&NewSourceId, 0, sizeof NewSourceId); // Post the Select Source dialog fSuccess = TWAIN_Mgr(DG_CONTROL, DAT_IDENTITY, MSG_USERSELECT, &NewSourceId); } else { TWAIN_ErrorBox("Unable to open Source Manager (" DSM_FILENAME ")"); } if (nEntryState < TWAIN_SM_OPEN) { TWAIN_CloseSourceManager(hwnd); if (nEntryState < TWAIN_SM_LOADED) { TWAIN_UnloadSourceManag