gpi12.hlp (Table of Contents; Topic list)
GpiDrawFrom (1.2)
Function Group  Overview                          Up Next Previous
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#define INCL_GPISEGMENTS
 
BOOL GpiDrawFrom(hps, idFirstSegment, idLastSegment)
HPS hps;                /* presentation-space handle   */
LONG idFirstSegment;    /* first chain segment to draw */
LONG idLastSegment;     /* last chain segment to draw  */
 
The GpiDrawFrom function draws one or more segments in the picture chain.
The function draws all chained and called segments between and including the
segments identified by the idFirstSegment and idLastSegment parameters.
Although idFirstSegment must identify an existing segment, idLastSegment
need not. If idLastSegment does not specify an existing segment, the
function draws to the end of the picture chain.
 
GpiDrawFrom draws the segments using the current draw controls (except
correlation control), as set by the GpiSetDrawControl function. The function
does not affect drawing modes or open segments. Also, GpiDrawFrom cannot be
used in an area, path, or element bracket.
 
Parameter       Description
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hps             Identifies the presentation space.
 
idFirstSegment  Specifies the identifier of the first segment to draw. This
                parameter must be greater than zero.
 
idLastSegment   Specifies the identifier of the last segment to draw. This
                parameter must be greater than zero.
 
Return Value
 
The return value is GPI_OK if the function is successful or GPI_ERROR if an
error occurred.
 
Errors
 
Use the WinGetLastError function to retrieve the error value, which may be
one of the following:
 
     PMERR_AREA_INCOMPLETE
     PMERR_IMAGE_INCOMPLETE
     PMERR_INV_HPS
     PMERR_INV_MICROPS_FUNCTION
     PMERR_INV_SEG_NAME
     PMERR_PATH_INCOMPLETE
     PMERR_PS_BUSY
     PMERR_SEG_NOT_CHAINED
     PMERR_SEG_NOT_FOUND
     PMERR_STOP_DRAW_OCCURRED
 
Example
 
This example uses the GpiDrawFrom function to draw all segments in the
picture chain between and including the segments 1 and 4:
 
GpiDrawFrom(hps, 1L, 4L);
 
See Also
 
GpiCloseSegment, GpiDrawChain, GpiDrawDynamics, GpiDrawSegment,
GpiQuerySegmentNames, GpiSetDrawControl, WinGetLastError