The Scale Widget

Create a "slider" widget representing a numeric value with the Scale method.

$parent->Scale(options);

Other options are:

• -bigincrement => amount
• The amount to change the slider when using large increments. Default is 0, which means 1/10 of the scale.
• -command => callback
• Pointer to a function that will be called for every incremental change in the slider.
• -digits => amount
• The number of digits to keep when converting from a number to a string.
• -from => n
• Low end of the scale (default = 0).
• -label => string
• The string to use as a label for the slider.
• -length => amount
• The length of the slider.
• -orient => direction
• The orientation of the slider. Values can be either 'vertical' (default) or 'horizontal'.
• -repeatdelay => milliseconds
• Determines the number of milliseconds to hold down an arrow before it will auto-repeat. Default is 300.
• -repeatinterval => milliseconds
• Determines the number of milliseconds between auto-repeats once it is started. Default is 100.
• -resolution => value
• The increments that the scale will change by (default = 1).
• -showvalue => boolean
• Whether to show the current value of the slider (default = 1).
• -sliderlength => amount
• The size of the slider. Default is 25 pixels.
• -tickinterval => n
• The number of "ticks" to display for the slider. Default is 0 (no ticks).
• -to => n
• The top value of the scale (default is 100).
• -troughcolor => color
• Changes the color of the trough.
• -variable => \$variable
• Assigns the value of the slider to the specified variable.

Scale Methods

In addition to configure and cget, the following methods are defined for the Scale widget:

• get
• Returns the current value if given no arguments. If given x and y coordinates as the first and second arguments, returns the value of the scale at that position.
• set
• Assigns the value associated with the scale.
• coords
• Returns the x and y coordinates associated with the value given in the first argument.
• identify
• Returns "slider", "trough1", "trough2", or "", depending on which part of the scale corresponds to the given x, y coordinates.