VMS Help  —  RTL Routines, SMG$  SMG$REMOVE_LINE
    The Remove a Line from a Virtual Display routine removes a
    line from a specified virtual display that was drawn with the
    SMG$DRAW_LINE or SMG$DRAW_RECTANGLE routines.

    Format

      SMG$REMOVE_LINE  display-id ,start-row ,start-column ,end-row

                       ,end-column

1  –  Returns 

    OpenVMS usage:cond_value
    type:         longword (unsigned)
    access:       write only
    mechanism:    by value

2  –  Arguments 

 display-id

    OpenVMS usage:identifier
    type:         longword (unsigned)
    access:       read only
    mechanism:    by reference

    Specifies the virtual display from which the line is to be
    removed. The display-id argument is the address of an unsigned
    longword that contains the display identifier.

    The display identifier is returned by SMG$CREATE_VIRTUAL_DISPLAY.

 start-row

    OpenVMS usage:longword_signed
    type:         longword (signed)
    access:       read only
    mechanism:    by reference

    Specifies the row at which to begin removing the line. The start-
    row argument is the address of a signed longword that contains
    the row number.

 start-column

    OpenVMS usage:longword_signed
    type:         longword (signed)
    access:       read only
    mechanism:    by reference

    Specifies the column at which to begin removing the line. The
    start-column argument is the address of a signed longword that
    contains the column number.

 end-row

    OpenVMS usage:longword_signed
    type:         longword (signed)
    access:       read only
    mechanism:    by reference

    Specifies the row at which the line to be removed ends. The end-
    row argument is the address of a signed longword that contains
    the row number.

 end-column

    OpenVMS usage:longword_signed
    type:         longword (signed)
    access:       read only
    mechanism:    by reference

    Specifies the column at which the line to be removed ends. The
    end-column argument is the address of a signed longword that
    contains the column number.
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