| Release
11 October 1990 |
 TILEMODE System Variable
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Changing the TILEMODE setting has no effect on the entities already in your drawing. Thus, turning TILEMODE on doesn't guarantee that existing scripts or programs will run if you've used Release 11's new commands to create -Viewport entities or other objects in paper space; neither will they run if files you're importing (using DXFIN or IGESIN) make use of the new capabilities. To ensure compatibility with scripts or other macros created for Release 10, you should observe the following guidelines:
Create new drawings from a prototype that has TILEMODE on. This prevents any viewport entities, including the paper space viewport, from being created. You can use the VPORTS command to create, store, and retrieve viewport configurations.
Turning TILEMODE on in a drawing that already has Viewport or other paper space entities, allows you to use the VPORTS command to store and retrieve saved viewport configurations, but does not eliminate -paper space objects or viewports. This provides command-level compatibility, but not database-level compatibility.
Other scripts or AutoLISP programs that do not use the VPORTS command or directly manipulate the VPORTS symbol table should run without change, regardless of the TILEMODE setting. Scripts or AutoLISP programs that are designed for use in Release 11 and that use the new features might behave incorrectly if TILEMODE is on (such programs should check and set -TILEMODE as necessary).
DXFOUT will always output the paper space-specific header variables, regardless of TILEMODE's setting. Once TILEMODE has been turned off in a drawing, DXFOUT will output the viewport entities that have been created, even if -TILEMODE has been turned back on.
When TILEMODE is off, display list operations in existing ADI drivers are disabled. This should allow the majority of ADI drivers to continue to function, but some drivers perform screen operations not requested by AutoCAD and these may have problems. With TILEMODE on, all ADI drivers should operate the same way they did for Release 10.
The following sections list the commands and system variables affected by the TILEMODE system variable, and describe its effects. For a description of -TILEMODE's effects on AutoLISP and ADS functions, see the appropriate Programmer's Reference.
Commands Affected by TILEMODE
The following section lists the commands affected by the TILEMODE system variable.
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`DDLMODES |
Tilemode = 0 (R11 mode):
Viewport visibility changes take effect when you exit the
dialog box Tilemode = 1 (R10 mode): Viewport freeze and thaw settings cannot be changed |
|
DXFIN |
Tilemode = 0 (R11 mode):
If the incoming exchange file has TILEMODE=1, then all entities
are placed in the model space of the target drawing Tilemode = 1 (R10 mode): If you import a full drawing with TILEMODE=0 into a new drawing that has TILEMODE=1, it uses the TILEMODE setting of the incoming exchange file and enables paper space use |
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MSPACE |
Tilemode = 0 (R11 mode):
Puts you in model space Tilemode = 1 (R10 mode): Is not allowed, and terminates an AutoLISP function or script |
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MVIEW |
Tilemode = 0 (R11 mode):
Activates paper space and allows the creation and control
of Viewport entities Tilemode = 1 (R10 mode): Is not allowed, and terminates an AutoLISP function or script |
|
PSPACE |
Tilemode = 0 (R11 mode):
Puts you in paper space Tilemode = 1 (R10 mode): Is not allowed, and terminates an AutoLISP function or script |
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`VIEW |
Tilemode = 0 (R11 mode):
Restores the space in effect when the view was saved Tilemode = 1 (R10 mode): Saved paper space views cannot be restored. The rejection is similar to restoring a named view that doesn't exist |
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VPLAYER |
Tilemode = 0 (R11 mode):
Allows the assignment of viewport-exclusive layer visibility Tilemode = 1 (R10 mode): Is not allowed, and terminates an AutoLISP function or script |
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VPORTS |
Tilemode = 0 (R11 mode):
Is not allowed, and terminates an AutoLISP function or script Tilemode = 1 (R10 mode): Works the same way as in Release 10 |
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Ctrl+V |
Tilemode = 0 (R11 mode):
Cycles through active viewports Tilemode = 1 (R10 mode): If there are viewports on screen, it cycles through them |
|
ZOOM |
Tilemode = 0 (R11 mode):
You can use the XP option to set a paper space zoom ratio Tilemode = 1 (R10 mode): The XP option has no effect |
System Variables Affected by TILEMODE
EXTMAX, EXTMIN, LIMCHECK, LIMMAX, LIMMIN, UCSNAME, UCSORG, UCSXDIR, UCSYDIR
Tilemode = 0 (R11 mode): For all of these variables, these settings apply only to the current space independently of the other space. The values of these system variables are written as separate HEADER variables when output by DXFOUT
Tilemode = 1 (R10 mode): These variables have the same effect as in Release 10
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