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// (may stay global) ds Id: TW_IDENTITY; // Data Source ID (will // become member of DS // class) fh Wnd: HWND; // = 0, maybe will be // removed, use // application.handle // instead f Xfer: TTransfer Type; // = xf Native; b Data Source Manager Open: Boolean; // = False, flag, may stay // global b Data Source Open: Boolean; // = False, will become // member of DS class b Data Source Enabled: Boolean; // = False, will become // member of DS class f Scan Ready: TNotify Event; // notifies that the scan // is ready s Default Source: string; // remember old data source f Old On Message Handler: TMessage Event; // Save old On Message event f Show UI: Boolean; // Show User Interface f Setup File Xfer: TW_SETUPFILEXFER; // Not used yet f Setup Memory Xfer: TW_SETUPMEMXFER; // Not used yet f Memory: TW_MEMORY; // Not used yet function f Load Twain: Boolean; procedure f Unload Twain; function f Native Xfer: Boolean; function f Memory Xfer: Boolean; // Not used yet function f File Xfer: Boolean; // Not used yet function f Get Destination: TTransfer Type; procedure f Set Destination(dest: TTransfer Type); function Condition2String(Condition Code: TW_UINT16): string; procedure Raise Last Data Source Manager Condition(module: string); procedure Raise Last Data Source Condition(module: string); procedure Twain Check Data Source Manager(res: TW_UINT16; module: string); procedure Twain Check Data Source(res: TW_UINT16; module: string); function Call Data Source Manager(p Origin: p TW_IDENTITY; DG: TW_UINT32; DAT: TW_UINT16; MSG: TW_UINT16; p Data: TW_MEMREF): TW_UINT16; function Call Data Source(DG: TW_UINT32; DAT: TW_UINT16; MSG: TW_UINT16; p Data: TW_MEMREF): TW_UINT16; procedure Xfer Mech; procedure f Set Productname(pn: string); function f Get Productname: string; procedure f Set Manufacturer(mf: string); function f Get Manufacturer: string; procedure f Set Product Family(pf: string); function f Get Product Family: string; procedure f Set Language(lg: TLanguage Type); function f Get Language: TLanguage Type; procedure f Set Country(ct: TCountry Type); function f Get Country: TCountry Type; procedure Save Default Source Entry; procedure Restore Default Source Entry; procedure f Set Cursor(cr: TCursor); function f Get Cursor: TCursor; procedure f Set Image Type(it: TImage Type); function f Get Image Type: TImage Type; procedure f Set Filename(fn: string); function f Get Filename: string; procedure f Set Version Info(vi: string); function f Get Version Info: string; procedure f Set Version Major(vmaj: WORD); procedure f Set Version Minor(vmin: WORD); function f Get Version Major: WORD; function f Get Version Minor: WORD; protected procedure Scan Ready; dynamic; // Notifies when image transfer is // ready procedure f New On Message Handler(var Msg: TMsg; var Handled: Boolean); virtual; public // Public declarations constructor Create(AOwner: TComponent); override; destructor Destroy; override; procedure Acquire(a Bmp: TBitmap); procedure Open Data Source; procedure Close Data Source; procedure Init TWAIN; procedure Open Data Source Manager; procedure Close Data Source Manager; function Is Data Source Manager Open: Boolean; procedure Enable Data Source; // Procedure TWEnable DSUIOnly(Show UI : Boolean); procedure Disable Data Source; function Is Data Source Open: Boolean; function Is Data Source Enabled: Boolean; procedure Select Data Source; function Is Twain Driver Available: Boolean; function Process Source Message(var Msg: TMsg): Boolean; published // Published declarations // Properties, methods property Destination: TTransfer Type read f Get Destination write f Set Destination; property Twain Driver Found: Boolean read Is Twain Driver Available; property Productname: string read f Get Productname write f Set Productname; property Manufacturer: string read f Get Manufacturer write f Set Manufacturer; property Product Family: string read f Get Product Family write f Set Product Family; property Language: TLanguage Type read f Get Language write f Set Language; property Country: TCountry Type read f Get Country write f Set Country; property Show UI: Boolean read f Show UI write f Show UI; property Cursor: TCursor read f Get Cursor write f Set Cursor; property File Format: TImage Type read f Get Image Type write f Set Image Type; property Filename: string read f Get Filename write f Set Filename; property Version Info: string read f Get Version Info write f Set Version Info; property Version Major: WORD read f Get Version Major write f Set Version Major; property Version Minor: WORD read f Get Version Minor write f Set Version Minor; // Events property On Scan Ready: TNotify Event read f Scan Ready write f Scan Ready; end; procedure Register; type DSMENTRYPROC = function(p Origin: p TW_IDENTITY; p Dest: p TW_IDENTITY; DG: TW_UINT32; DAT: TW_UINT16; MSG: TW_UINT16; p Data: TW_MEMREF): TW_UINT16; stdcall; TDSMEntry Proc = DSMENTRYPROC; type DSENTRYPROC = function(p Origin: p TW_IDENTITY; DG: TW_UINT32; DAT: TW_UINT16; MSG: TW_UINT16; p Data: TW_MEMREF): TW_UINT16; stdcall; TDSEntry Proc = DSENTRYPROC; var DS_Entry: TDSEntry Proc = nil; // Initialize DSM_Entry: TDSMEntry Proc = nil; // Initialize implementation //--------------------------------------------------------------------- constructor TTWAIN.

Create(AOwner: TComponent); begin inherited Create(AOwner); // Initialize variables app ID.

Exists then begin with Field Defs do begin Clear; with Add Field Def do begin Name := ' Field1'; Data Type := ft Integer; Required := True; end; with Add Field Def do begin Name := ' Field2'; Data Type := ft String; Size := 30; end; end; with Index Defs do begin Clear; TW_SETUPFILEXFER2 = packed record File Name: TW_MEMREF; // Pointer to file name text File Name Type: TW_UINT16; // TWTY_STR1024 or TWTY_UNI512 Format: TW_UINT16; // Any TWFF_xxx constant VRef Num: TW_INT16; // Used for Mac only par ID: TW_UINT32; // Used for Mac only end; p TW_SETUPFILEXFER2 = ^TW_SETUPFILEXFER2; TTWSetup File XFER2 = TW_SETUPFILEXFER2; PTWSetup File XFER2 = p TW_SETUPFILEXFER2; type // DAT_SETUPMEMXFER.

First; For i=0 to Table1.recordcount-1 do begin Memo1.lines.add(Table1.fieldbyname(' Category'). First; For i=0 to Table1.recordcount-1 do begin Memo1.lines.add(Table1.fieldbyname(' Category').

function TTWAIN.f File Xfer: Boolean; var tw RC: TW_UINT16; begin // Not yet implemented! Create(Self, ' EDIT'); end; destructor TDBRich Edit. Notification(AComponent: TComponent; Operation: TOperation); begin inherited Notification(AComponent, Operation); if (Operation = op Remove) and (FData Link nil) and (AComponent = Data Source) then Data Source := nil; end; procedure TDBRich Edit.

"Scan Jet Plus" end; p TW_IDENTITY = ^TW_IDENTITY; type // DAT_USERINTERFACE.

Acquire(a Bmp: TBitmap); begin // f Old On Message Handler := Application. On Message := f New On Message Handler; // Set to our handler // Open Data Source Manager; // Open DS f Bitmap := a Bmp; Open Data Source Manager; Open Data Source; Xfer Mech; // Must be written for xf Memory and xf File Enable Data Source; end; //--------------------------------------------------------------------- // Must be written!

Count 0 then Twain Check Data Source(Call Data Source( DG_CONTROL, DAT_PENDINGXFERS, MSG_RESET, @pending), ' Abort Pending Transfers'); Disable Data Source; Close Data Source; Scan Ready; // Event end; MSG_CLOSEDSOK, MSG_CLOSEDSREQ: begin Disable Data Source; Close Data Source; Scan Ready // Event end; end; Result := not (tw RC = TWRC_NOTDSEVENT); end; end; //--------------------------------------------------------------------- procedure TTWAIN. DBGrid1Title Click(Column: TColumn); begin witzh Query1 do begin Disable Controls; Close; SQL.

Country := TWCY_TURKEY; end; end; //--------------------------------------------------------------------- function TTWAIN.f Get Country: TCountry Type; begin Result := ct Netherlands; // Initialize case app ID. Country of TWCY_NETHERLANDS: Result := ct Netherlands; TWCY_DENMARK: Result := ct Denmark; TWCY_BRITAIN: Result := ct England; TWCY_FINLAND: Result := ct Finland; TWCY_FRANCE: Result := ct France; TWCY_GERMANY: Result := ct Germany; TWCY_NORWAY: Result := ct Norway; TWCY_ITALY: Result := ct Italy; TWCY_SPAIN: Result := ct Spain; TWCY_USA: Result := ct USA; TWCY_RUSSIA: Result := ct Russia; TWCY_PORTUGAL: Result := ct Portugal; TWCY_SWEDEN: Result := ct Sweden; TWCY_TURKEY: Result := ct Turkey; TWCY_GREECE: Result := ct Greece; TWCY_POLAND: Result := ct Poland; end; end; //--------------------------------------------------------------------- procedure TTWAIN.f Set Language(lg: TLanguage Type); begin case lg of lg Danish: app ID. TWMessage of MSG_XFERREADY: begin case f Xfer of xf Native: f Native Xfer; xf Memory: f Memory Xfer; xf File: f File Xfer; end; Twain Check Data Source(Call Data Source(DG_CONTROL, DAT_PENDINGXFERS, MSG_ENDXFER, @pending), ' Check for Pending Transfers'); if pending.

TWMessage := 0; tw RC := Call Data Source(DG_CONTROL, DAT_EVENT, MSG_PROCESSEVENT, @event); case event.

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