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Button 3 Operations
Button 3 performs a zoom operation. Clicking in two locations defines
a rectangle to zoom into. The window will then display the contents
of this area (after compensating for aspect ratio). To zoom out,
button 3 is held while the pointer is moved, then released. A dotted
box is drawn defined by the press and release locations. A second
button 3 press in the same window will cause the area defined by the
first and second presses to be shrunk by the ratio of the diagonals of
the rectangles defined by press 1, release 1 and press 1, press 2. To
zoom out a lot, release 1 is much closer to press 1 than press 2. A
second button 3 press in a different window will display the boxed
area of the first window in the second window.
If Shift or Ctrl is held down before pressing button 3 in
a drawing window, a pan operation will be initiated instead of the
zoom, the same as if button 2 was pressed.
In the layer menu, button 3 will cause the layers to blink. In
256-color modes, the blinking status is turned on and off by clicking
with button 3. Clicking with button 3 on the small box icon at the
far right of the layer menu will turn off blinking of all layers, in
this case. In other modes, button 3 must be pressed and held over a
layer entry, and only the main drawing window will display blinking.
In either case, layers that happen to have the same color as the
selected blinking layer will also blink, since the operation is
sensitive only to the layer color.
Next: Button 4, Mouse Wheel
Up: Mouse Buttons
Previous: Button 2 Operations
Contents
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Stephen R. Whiteley
2006-10-23