PpGetPC()

Extract data from a print context

Synopsis:

void * PpGetPC( PpPrintContext_t *pc,
                     int member,
                     const void ** const data);

Arguments:

pc: The pointer to a PpPrintContext_t structure that was returned by PpCreatePC().
data: the address of a pointer to the data type of the member being queried. This pointer will be set to point to the member within the print context structure. Don't use it to modify the print context; use only PpSetPC().
member: The member of the print context to query, as given in the table below. For a description of the members, see PpPrintContext_t.

Library:

ph

Description:

Use this function to query the attributes of a print context.

Don't extract values directly from the data structure. Your application might not work if the structure changes in the future.

Use the following data types when getting the value of the members of the print context:

Member	Data
Pp_PC_COLLATING_MODE	Address of a `char *` ( value )
Pp_PC_COLOR_MODE	Address of a `char *` ( value )
Pp_PC_CONTROL	Address of a `PpPCControl_t *`
Pp_PC_COPIES	Address of a `char *` ( value )
Pp_PC_DATE	Address of a `char *` (string)
Pp_PC_DEVICE	Address of a `char *` (string)
Pp_PC_DITHERING	Address of a `char *` ( value )
Pp_PC_DO_PREVIEW	Address of a `char *` ( value )
Pp_PC_DRIVER	Address of a `char *` (string)
Pp_PC_DUPLEX	Address of a `char *` ( value )
Pp_PC_FILENAME	Address of a `char *` (string)
Pp_PC_INKTYPE	Address of a `char *` ( value )
Pp_PC_INTENSITY	Address of a `unsigned long *`
Pp_PC_JOB_NAME	Address of a `char *` (string)
Pp_PC_MARGINS	Address of a `PhRect_t *`
Pp_PC_MAX_DEST_SIZE	Address of a `unsigned long`
Pp_PC_NAME	Address of a `char *` (string)
Pp_PC_NONPRINT_MARGINS	Address of a `PhRect_t *`
Pp_PC_ORIENTATION	Address of a `char *` ( value )
Pp_PC_PAGE_NUM	Address of a `unsigned long`
Pp_PC_PAGE_RANGE	Address of a `PpPageRange_t *`
Pp_PC_PAPER_SIZE	Address of a `PhDim_t *`
Pp_PC_PAPER_SOURCE	Address of a `char *` ( value )
Pp_PC_PAPER_TYPE	Address of a `char *` ( value )
Pp_PC_PREVIEW_APP	Address of a `char *` (string)
Pp_PC_PRINTER_RESOLUTION	Address of a `PhDim_t *`
Pp_PC_PROP_APP	Address of a `char *` (string)
Pp_PC_REVERSED	Address of a `char` ( value )
Pp_PC_SCALE	Address of a `PhPoint_t *`
Pp_PC_SOURCE_COLORS	Address of a `unsigned long *`
Pp_PC_SOURCE_OFFSET	Address of a `PhPoint_t *`
Pp_PC_SOURCE_RESOLUTION	Address of a `PhDim_t *`
Pp_PC_SOURCE_SIZE	Address of a `PhDim_t *`
Pp_PC_USER_ID	Address of a `char *` (string)

Returns:

A pointer to the requested data, or NULL if an unrecognized member was specified.

Examples:

int get_it( PtWidget_t *widget, ApInfo_t *apinfo,
            PtCallbackInfo_t *cbinfo )

{

    PhDim_t *dim;
    void    *pc_data;
    PpPrintContext_t *pc;

    /* Eliminate 'unreferenced' warnings */
    widget = widget, apinfo = apinfo, cbinfo = cbinfo;

    pc = PpCreatePC();

    // Pop up the standard print dialog to fill in the PC
    PtPrintSelection( NULL, NULL,
                      "Select Printer", pc, 0 );

    // Get some stuff from the pc

    // A string:
    PpGetPC( pc, Pp_PC_NAME, &pc_data );
    printf( "printer: %s\n", (char *)pc_data );

    // A structure ( PhDim_t ):
    PpGetPC( pc, Pp_PC_PAPER_SIZE, &pc_data );
    printf( "paper height: %d, width: %d\n",
        ((PhDim_t *)pc_data)->h, ((PhDim_t *)pc_data)->w );

    // A long value:
    PpGetPC( pc, Pp_PC_INTENSITY, &pc_data );
    printf( "intensity: %ld\n", *(long *)pc_data );

    // A number stored in a char:
    PpGetPC( pc, Pp_PC_COPIES, &pc_data );
    printf( "copies : %d\n", *(char *)pc_data );

    // Of course, the correct type can be used to
    // get the member:
    PpGetPC( pc, Pp_PC_PAPER_SIZE, &dim );
    printf( "paper height: %d, width: %d\n", dim->h, dim->w );

    PpReleasePC( pc );

    return Pt_CONTINUE;
}

Classification:

Photon

Safety:
Interrupt handler	No
Signal handler	No
Thread	No