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Retired Document

Important: This sample code may not represent best practices for current development. The project may use deprecated symbols and illustrate technologies and techniques that are no longer recommended.

Relevant replacement documents include:

http://developer.apple.com/library/mac/#documentation/GraphicsImaging/Reference/ImageCaptureDeviceModulesReference/index.html%23//apple_ref/doc/uid/TP40006079

Source/SampleDS.h

// ===========================================================================

//  SampleDS.h              TWAIN 1.9           ©1991-2002 TWAIN Working Group

// ===========================================================================

//

// --------------------------------------------------------------------------------

/* Control Group Prototypes */

TW_INT16    DS_Control(pTW_IDENTITY pSource,TW_UINT16 Dat, TW_UINT16 Msg,TW_MEMREF pData);

TW_INT16    DS_Control_Status(pTW_IDENTITY pSource,TW_UINT16 Msg,pTW_STATUS pStatus);

TW_INT16    DS_Control_Identity(pTW_IDENTITY pSource,TW_UINT16 Msg,pTW_IDENTITY pDSIdentity);

TW_INT16    DS_Control_Event(pTW_IDENTITY pSource,TW_UINT16 Msg,pTW_EVENT pEvent);

TW_INT16    DS_Control_Capability(pTW_IDENTITY pSource,TW_UINT16 Msg,pTW_CAPABILITY pCapability);

TW_INT16    DS_Control_PendingXfers(pTW_IDENTITY pSource,TW_UINT16 Msg,pTW_UINT16 pPendingXfers);

TW_INT16    DS_Control_SetupMemXfer(pTW_IDENTITY pSource,TW_UINT16 Msg,pTW_SETUPMEMXFER pSetupMem);

TW_INT16    DS_Control_SetupFileXfer(pTW_IDENTITY pSource,TW_UINT16 Msg,pTW_SETUPFILEXFER pSetupFile);

TW_INT16    DS_Control_UserInterface(pTW_IDENTITY pSource,TW_UINT16 Msg,pTW_USERINTERFACE pUserInterface);

TW_INT16 DS_Control_XferGroup(pTW_IDENTITY pSource, TW_UINT16 Msg,pTW_UINT16 pXferGroup);

/* Image Group Prototypes */

TW_INT16    DS_Image(pTW_IDENTITY pSource,TW_UINT16 Dat,TW_UINT16 Msg,TW_MEMREF pData);

TW_INT16    DS_Image_ImageInfo(pTW_IDENTITY pSource,TW_UINT16 Msg,pTW_IMAGEINFO pImageInfo);

TW_INT16    DS_Image_ImageLayout(pTW_IDENTITY pSource,TW_UINT16 Msg,pTW_IMAGELAYOUT pImageLayout);

TW_INT16    DS_Image_NativeXfer(pTW_IDENTITY pSource,TW_UINT16 Msg,PicHandle *pHandle);

TW_INT16    DS_Image_MemXfer(pTW_IDENTITY pSource,TW_UINT16 Msg,pTW_IMAGEMEMXFER pImageXfer);

TW_INT16    DS_Image_FileXfer(pTW_IDENTITY pSource,TW_UINT16 Msg,TW_MEMREF pNULL); /* pData is null */

/* Internal Utility Routines */

TW_INT16 SelectFile(void);

TW_INT16 GetImageInfo(void);

TW_INT16 LoadImageAsPict(void);

TW_INT16 LoadImageAsGWorld(void);

void DisplayUserInterface();

TW_INT16        FindIndex(TW_INT16 Item,pTW_INT16 pList,TW_INT16 Number);

//TW_UINT16 FindIndex(TW_INT16 Item,pTW_UINT16 pList,TW_INT16 Number);

TW_INT16    GetDefaultImageLayout(pTW_IMAGELAYOUT pImageLayout);

void doDrawContent(WindowRef windowRef);

void doCloseCommand();

void  doAdjustCursor(WindowRef windowRef);

OSStatus  windowEventHandler(EventHandlerCallRef eventHandlerCallRef,

                             EventRef   eventRef,

                             void*      userData);

/* debugging */

void DS_LogText ( const char* pFormat, ... );

void DS_LogValue (char* label,

                  char* labelKey,

                  char* format,

                  UInt32 value);

void DS_LogResult ( UInt16 result,

                    UInt16 condition );

void DS_LogMessage(UInt16 message);

void DS_LogTriplet ( UInt32 group,

                     UInt16 attribute,

                     UInt16 message,

                     Ptr data );

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