100 lines
3 KiB
C
100 lines
3 KiB
C
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// Copyright (c) Microsoft Corp. 1993-94
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/*==============================================================================
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This header file defines the viewer rendering support API.
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17-Oct-93 RajeevD Created.
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25-Oct-93 RajeevD Updated to support random access to bands.
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==============================================================================*/
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#ifndef _INC_VIEWREND
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#define _INC_VIEWREND
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#include <ifaxos.h>
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#ifdef IFBGPROC
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#ifndef _BITMAP_
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#define _BITMAP_
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// Win 3.1 Bitmap
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typedef struct
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{
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int bmType;
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int bmWidth;
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int bmHeight;
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int bmWidthBytes;
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BYTE bmPlanes;
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BYTE bmBitsPixel;
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void FAR* bmBits;
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}
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BITMAP, FAR *LPBITMAP;
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#endif // _BITMAP_
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#endif // IFBGPROC
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct
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{
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WORD cPage; // number of pages
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WORD xRes; // horizontal resolution [dpi]
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WORD yRes; // vertical resolution [dpi]
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WORD yMax; // maximum page height [pixels]
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}
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VIEWINFO, FAR* LPVIEWINFO;
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/*==============================================================================
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This initialization procedure creates a context for use in all subsequent calls.
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Upon call, the lpwBandSize parameter point to the preferred output band buffer
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size. Upon return, it may be filled with a larger value if required.
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==============================================================================*/
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LPVOID // returns context (NULL on failure)
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WINAPI
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ViewerOpen
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(
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LPVOID lpFile, // IFAX key or Win3.1 path or OLE2 IStream
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DWORD nType, // data type: HRAW_DATA or LRAW_DATA
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LPWORD lpwResoln, // output pointer to x, y dpi array
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LPWORD lpwBandSize, // input/output pointer to output band size
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LPVIEWINFO lpViewInfo // output pointer to VIEWINFO struct
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);
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/*==============================================================================
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This procedure sets the current page. The first page has index 0.
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==============================================================================*/
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BOOL // returns success/failure
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WINAPI
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ViewerSetPage
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(
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LPVOID lpContext, // context pointer
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UINT iPage // page index
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);
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/*==============================================================================
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This procedure may be called repeatedly to fetch successive bands of a page.
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Upon call, lpbmBand->bmBits must point to an output band buffer. Upon return,
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the remaining fields of lpbmBand will be filled. The lpbmBand->bmHeight will
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be set to 0 to indicate end of page.
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==============================================================================*/
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BOOL // returns success/failure
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WINAPI
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ViewerGetBand
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(
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LPVOID lpContext, // context pointer
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LPBITMAP lpbmBand
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);
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/*==============================================================================
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This termination call releases the context.
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==============================================================================*/
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BOOL WINAPI ViewerClose
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(
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LPVOID lpContext
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);
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // _INC_VIEWREND
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