Topic: APLX Help : System Classes : List of Classes : Splitter
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The Splitter class implements the Splitter control. This is a vertical or horizontal line control, which allows the user to change the relative sizes of the controls on a window. For example, you might have a list box and a text edit, and use a Splitter to allow the user to move the boundary between them.

To do this, you first set up the leftmost (or topmost) control or controls, using the align property to align to the left (or top). You then create the Splitter, defining its position with the where property. Then you create the rightmost (or bottom) control, setting its align property to fill the remaining client area of the parent, as shown in the example below.

If the Splitter style is 0 (the default), it has the normal bevelled appearance. If style is 1, it is not bevelled. (This parameter is ignored under MacOS).

The limit property is a numeric scalar, which sets the minimum size of the panes in the current scale. The default is 0.


[1]   ⍝ Sample function demonstrating use of the Splitter object
[2]   ⍝ We set up a list box and multiline edit fields, aligned to the
[3]   ⍝ left in each case, with a splitter between them
[4]   DEMO←'⎕' ⎕NEW 'Window' ⋄ DEMO.scale←5
[5]   DEMO.title←'Splitter Example'
[6]   ⍝
[7]   ⍝ Set up the list box
[8]   DEMO.List1.New 'List' ⋄ DEMO.List1.align←2 ⋄ DEMO.List1.size←50 100
[9]   DEMO.List1.list←⎕M
[10]  ⍝
[11]  ⍝ Now create the splitter, just to the right of the list box
[12]  DEMO.mySplitter.New 'Splitter' ⋄ DEMO.mySplitter.where←0 102
[13]  ⍝
[14]  ⍝ Now create right edit object, aligned to fill remainder of client area
[15]  DEMO.Edit1.New 'Edit' ⋄←36 ⋄ DEMO.Edit1.align←¯1
[16]  DEMO.Edit1.color←0 0 0 225 255 255 ⋄ DEMO.Edit1.border←0
[17]  TEXT←'This is an example of a window with a splitter.'
[18]  TEXT←TEXT,⎕R,⎕R,'Try re-sizing the window and moving the splitter around.'
[19]  DEMO.Edit1.text←TEXT
[20]  ⍝
[21]  ⍝ Wait for the user to close the window
[22]  0 0⍴⎕WE DEMO


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Topic: APLX Help : System Classes : List of Classes : Splitter
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