LM-ZOOM moves and resizes controls proportionally to the new dimensions of the window and changes the size of the font within controls according to the new control’s height.

This layout manager doesn’t affect status-bars, menu bars, tool-bars and ribbons.

For each resize action:

deltaX = current window size / previous window size,

deltaY = current window lines / previous window lines.

For each control:

If the Layout-Data property is not set, each control has its own default behavior.

The list below describes the default behavior of each control:

The user can also specify custom values for some controls directly in the handle definition, without using the Layout-Data property.

Example:

A sample configuration string is provided in the isresize.def Copybook.

The configuration string is composed of a series of <control-type>=<value> separated by a spaces or comma.

<control-type>=<value> must be a unique word. No space may be put inside. The string is case insensitive.

Example:

The list below describes the <control-type> you can use in the configuration string.

<value> is a numeric value that is the sum of the constant values that must be used for the control.

In the above sample, 119 is the sum between rlm-resize-x, rlm-move-x, rlm-no-min-x, rlm-resize-y, rlm-move-y, rlm-no-min-y.

Note: inquiring controls Lines and Size properties after the window has been resized returns the initial values and not the new values when the Layout-Manager is LM-ZOOM.

You can specify a range of dimensions, expressed in percentage, in which the font will be altered. Outside this range, LM-ZOOM behaves exactly the same as LM-SCALE, so it just changes controls’ dimensions and coordinates without affecting the font.

The range is expressed via the iscobol.gui.layout_manager.max_font_zoom and the iscobol.gui.layout_manager.min_font_zoom configuration properties.

Example:

Assuming that the initial font size is 12, when the user reduces the window’s height, LM-ZOOM will reduce the font size accordingly, until it reaches a size of 6. After it, the font will not be reduced anymore. On the other hand, when the user increases the window’s height, LM-ZOOM will increase the font size accordingly, until it reaches a size of 18. After it, the font will not be increased anymore.

The same result can be obtained by adding the max-font-zoom attribute and the min-font-zoom attribute to the configuration string in the layout-manager handle definition, e.g.

The attributes in the handle definition have priority over the corresponding configuration properties.