The first 10 pointing
device buttons are automatically assigned; you can reassign all
except button 1, the pick button.
On a two-button mouse, the left button
is the pick button used to
- Specify locations
- Select objects for editing
- Choose menu options and dialog box buttons
and fields
The operation of the right button on a
mouse depends on context; it can be used to
- End a command in progress
- Display a shortcut menu
- Display the Object Snap menu
- Display the Toolbars dialog box
Right-click
operation can be modified in the Options dialog box (OPTIONS). The operation
of additional buttons on a pointing device is defined in the menu
file.
The Wheel Mouse
The
wheel mouse has a small wheel between the buttons. The left and
right buttons behave the same as they do on a standard mouse. You
can rotate the wheel by discrete values. You can use the wheel to
zoom and pan in your drawing without using any commands.
By default, the zoom factor is set to 10 percent;
each increment in the wheel rotation changes the zoom level by 10
percent. The ZOOMFACTOR system variable
controls the incremental change, whether forward or backward. The higher
the number, the larger the change.
The following table lists the wheel mouse actions
supported in this program.
To...
|
Do this...
|
Zoom in or out
|
Rotate the wheel forward to zoom in, backward
to zoom out
|
Zoom to drawing extents
|
Double-click the wheel button
|
Pan
|
Hold down the wheel button and drag the mouse
|
Pan (joystick)
|
Hold down CTRL and the wheel button, and drag
the mouse
|
Display the Object Snap menu
|
With the MBUTTONPAN system variable set to 0,
click the wheel button
|
To practice using several
features of the mouse
- Move your mouse and notice that the pointer
on the screen changes from crosshairs while the pointer is in the
drawing area, to an arrow when it's not over the drawing area, and
to an I-beam when it's in the text window.
- As you continue to move the mouse, notice
that the numbers in the coordinate display on the status bar change.
These numbers indicate the exact location, or coordinate, of the
crosshairs on the screen. Click in the coordinate display to turn
it off. Notice that the coordinates are updated only when you click
in the drawing area.
- Find the Snap button on the status bar
and click it with the pick button on your mouse (usually the left
button). Notice that the button darkens to indicate that Snap mode
has been turned on.
- Move the pointer around the screen and
observe that it seems to adhere, or "snap," to points at predetermined
and equivalent intervals on the screen. You can change the size
of these intervals.
- Click the Snap button again to turn Snap
mode off.
- Move the pointer over the Standard toolbar
at the top of the drawing area. As you leave the pointer over a
button for a few moments, notice a pop-up label, called a tooltip,
that identifies the button.
- Move the pointer over double bars at
the end of a toolbar. Then, as you hold down the pick button, drag
the toolbar around the screen to reposition it.
- Dock the toolbar by dragging it to a
docking location at the top, bottom, or either side of the drawing
area. When the outline of the toolbar appears in the docking area,
release the pick button.
To turn off all shortcut
menus in the drawing area
- In the Options dialog box, User Preferences
tab, under Windows Standard Behavior, clear Shortcut Menus in Drawing
Area.
- Click OK to record the current options
settings in the system registry and close the Options dialog box.
To turn off shortcut menus
individually
- In the Options dialog box, User Preferences
tab, select Shortcut Menus in Drawing Area, and then click Right-Click
Customization.
- In the Right-Click Customization dialog
box, under Default Mode, Edit Mode, or Command Mode, select the
options to control what happens when you right-click in the drawing
area.
- Click Apply & Close to close the
dialog box.
- Click OK to record the current options
settings in the system registry and close the Options dialog box.
CommandsOPTIONS
Customizes the program
settings.
PAN
Moves the view planar
to the screen.
ZOOM
Increases or decreases
the magnification of the view in the current viewport.
System VariablesMBUTTONPAN
Controls the behavior
of the third button or wheel on the pointing device.
SHORTCUTMENU
Controls whether Default,
Edit, and Command mode shortcut menus are available in the drawing
area.
ZOOMFACTOR
Controls how much the
magnification changes when the mouse wheel moves forward or backward.
