(LOGO.JPG) Python for OpenVMS

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SET_CURSOR_REL - Move Cursor Relative

Move the virtual cursor the specified number of rows and columns from the current virtual cursor position in a virtual display.

Format:

    None = vms_smg.set_cursor_rel (display_id, \
                  [delta_row], [delta_column])
Returns:

None

Arguments:

display_id
Virtual display in which to move the virtual cursor.
delta_row
The number of rows to move the virtual cursor.
delta_column
The number of columns to move the virtual cursor.
Examples:
>>> import vms_smg
>>> import vms_smgdef

>>> # create a new DECwindows terminal using SMG
>>> status, pasteboard_id, number_of_pasteboard_rows, \
... number_of_pasteboard_columns, type_of_terminal,   \
... device_name = vms_smg.create_pasteboard           \
...   (None, vms_smgdef.SMG_M_WORKSTATION)
>>>

>>> # create virtual display
>>> status, vtdpy1 = vms_smg.create_virtual_display \
...         (5, 10, vms_smgdef.SMG_M_BORDER, None, None)
>>>

>>> # paste virtual display
>>> status = vms_smg.paste_virtual_display \
...          (vtdpy1, pasteboard_id, 3, 5, None)
>>>
>>> # write to virtual display
>>> status = vms_smg.put_chars (vtdpy1, '1234567890', 1, 1)
>>> status = vms_smg.put_chars (vtdpy1, 'ABCDEFGHIJ', 2, 1)
>>> status = vms_smg.put_chars (vtdpy1, 'KLMNOPQRST', 3, 1)
>>> status = vms_smg.put_chars (vtdpy1, 'abcdefghij', 4, 1)
>>> status = vms_smg.put_chars (vtdpy1, 'klmnopqrst', 5, 1)
>>>

Screen layout, file: VMS_SMG_008.JPG

(picture VMS_SMG_008.JPG)

>>> # move cursor over '1'        #  X   Y
>>> vms_smg.set_cursor_rel (vtdpy1, -4, -9)
>>>
>>> # move cursor over '3'
>>> vms_smg.set_cursor_rel (vtdpy1, None, 2)
>>>
>>> # move cursor over 'b'
>>> vms_smg.set_cursor_rel (vtdpy1, 3, -1)
>>>

>>> # try to move outside the virtual display
>>> vms_smg.set_cursor_rel (vtdpy1, 99)
Traceback (innermost last):
  File "<stdin>", line 1, in ?
vms_smg.error: (1212972, '%SMG-F-INVROW, invalid row')
>>>


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11-SEP-2000 ZE.