NAME

DfInqJust − Return the frame justification

SYNOPSIS

C:

void DfInqJust(frame, left, bottom)
DtObject frame;
DtReal ∗left, ∗bottom ;

FORTRAN:

CALL DFQJ(FRAME, LEFT, BOTTOM)
INTEGER∗4 FRAME
REAL∗8 LEFT, BOTTOM

DESCRIPTION

DfInqJust queries the justification of a specified frame, frame, and returns the justification values in left and bottom.  When the aspect ratios of the frame border and the device viewport are not the same, there will be extra "white space" inside the device viewport.  The frame justification provides a mechanism for controlling where this white space is positioned. 

The parameter left defines a value between 0.0 and 1.0 inclusive specifying the fraction of the white space to be inserted between the bottom left hand corner of the viewport and the left of the displayed image.  Similarly, the parameter bottom specifies the fraction of white space to be inserted between the bottom left corner of the viewport and the bottom of the displayed image. 

ERRORS

DfInqJust will fail if the frame handle is invalid. 

[WARNING - invalid frame handle]

SEE ALSO

DdSetFrame(3D), DfSetJust(3D), DfSetBoundary(3D), DfUpdate(3D)

March 13, 1992