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Format:
CREATE_VIEWPORT - Create a Virtual Viewport
Associate a viewport with a virtual display.
status = vms_smg.create_viewport (display_id, \
viewport_row_start, viewport_column_start, \
viewport_number_rows, viewport_number_columns)
Returns:
Arguments:
Examples:
(go to: table of contents,
index, list of vms_smg,
prev: PREV,
next: CREATE_VIRTUAL_DISPLAY)
>>> 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)
>>>
>>> # 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)
>>>
>>> # paste virtual display
>>> status = vms_smg.paste_virtual_display \
... (vtdpy1, pasteboard_id, 3, 5, None)
>>>
>>> # create a viewport
>>> status = vms_smg.create_viewport (vtdpy1, 2, 3, 4, 5)
>>>
Notice that the effect is not immediately visible.
>>> # repaste virtual display
>>> vms_smg.repaste_virtual_display (vtdpy1, pasteboard_id, 3, 5, None)
>>>
>>> # try to associate a viewport to a non-existing display
>>> status = vms_smg.create_viewport (vtdpy1+99, 1, 2, 3, 4)
Traceback (innermost last):
File "<stdin>", line 1, in ?
vms_smg.error: (1212956, '%SMG-F-INVDIS_ID, invalid display-id')
>>>