IImportPreview Class Reference

#include <IImportPreview.h>

Inheritance diagram for IImportPreview:

Public Member Functions
virtual ErrorCode	Create24bitRGBPreview (uint8 *prevBaseaddr, int32 prevWidth, int32 prevHeight, IPMStream *iPMStream, bool16 useProgressBar) const =0
Public Member Functions inherited from IPMUnknown
virtual IPMUnknown *	QueryInterface (PMIID interfaceID) const =0
virtual void	AddRef () const =0
virtual void	Release () const =0

Detailed Description

IImportPreview This class is used to create a 24 bit RGB preview for the Place dialog. This interface lives off of the PlaceProviderBoss (the boss containing an IID_IIMPORTPROVIDER interface) for each specific page item. If the interface does not exist, then the OS is responsible for drawing the preview on the Mac and no preview is drawn on Windows. If you are implementing this routine, it is desirable to periodically check events to allow the user to abort the preview creation process.

Member Function Documentation

virtual ErrorCode IImportPreview::Create24bitRGBPreview ( uint8 *  prevBaseaddr, int32  prevWidth, int32  prevHeight, IPMStream *  iPMStream, bool16  useProgressBar  ) const

pure virtual

Create a 24 bit RGB preview of the stream contents.

Parameters

prevBaseAddr	- OUT: Pointer to the bitmap data. The base addr points to an already allocated block of memory that is (((width * 3) + 3) / 4) * 4 * height bytes large. That is, each row is long aligned.
prevWidth	- IN: The width of the preview area.
prevHeight	- IN: The height of the preview area.
iPMStream	- IN: the input stream containing the data we want previewed.
useProgressBar	- IN: kTrue if it is okay to draw a progress bar.

Returns

kSuccess if successful. Otherwise, something like kFailure.