# wx.lib.anchors.LayoutAnchors¶

A class that implements Delphi’s Anchors with wx.LayoutConstraints.

Anchored sides maintain the distance from the edge of the control to the same edge of the parent. When neither side is selected, the control keeps the same relative position to both sides.

The current position and size of the control and it’s parent is used when setting up the constraints. To change the size or position of an already anchored control, set the constraints to None, reposition or resize and reapply the anchors.

Examples:

Let's anchor the right and bottom edge of a control and
resize it's parent.

ctrl.SetConstraints(LayoutAnchors(ctrl, left=0, top=0, right=1, bottom=1))

+=========+         +===================+
| +-----+ |         |                   |
| |     * |   ->    |                   |
| +--*--+ |         |           +-----+ |
+---------+         |           |     * |
|           +--*--+ |
+-------------------+
* = anchored edge

When anchored on both sides the control will stretch horizontally.

ctrl.SetConstraints(LayoutAnchors(ctrl, 1, 0, 1, 1))

+=========+         +===================+
| +-----+ |         |                   |
| *     * |   ->    |                   |
| +--*--+ |         | +---------------+ |
+---------+         | *     ctrl      * |
| +-------*-------+ |
+-------------------+
* = anchored edge


## Class Hierarchy¶

Inheritance diagram for class LayoutAnchors:

## Known Superclasses¶

wx.LayoutConstraints

## Methods Summary¶

 __init__ Initialize self. See help(type(self)) for accurate signature. setConstraintSides

## Class API¶

class LayoutAnchors(wx.LayoutConstraints)

A class that implements Delphi’s Anchors with wx.LayoutConstraints.

Anchored sides maintain the distance from the edge of the control to the same edge of the parent. When neither side is selected, the control keeps the same relative position to both sides.

The current position and size of the control and it’s parent is used when setting up the constraints. To change the size or position of an already anchored control, set the constraints to None, reposition or resize and reapply the anchors.

Examples:

Let's anchor the right and bottom edge of a control and
resize it's parent.

ctrl.SetConstraints(LayoutAnchors(ctrl, left=0, top=0, right=1, bottom=1))

+=========+         +===================+
| +-----+ |         |                   |
| |     * |   ->    |                   |
| +--*--+ |         |           +-----+ |
+---------+         |           |     * |
|           +--*--+ |
+-------------------+
* = anchored edge

When anchored on both sides the control will stretch horizontally.

ctrl.SetConstraints(LayoutAnchors(ctrl, 1, 0, 1, 1))

+=========+         +===================+
| +-----+ |         |                   |
| *     * |   ->    |                   |
| +--*--+ |         | +---------------+ |
+---------+         | *     ctrl      * |
| +-------*-------+ |
+-------------------+
* = anchored edge


### Methods¶

__init__(self, control, left=1, top=1, right=0, bottom=0)

Initialize self. See help(type(self)) for accurate signature.

setConstraintSides(self, side1, side1Edge, side1Anchor, side2, side2Edge, side2Anchor, size, sizeEdge, centre, cPos, cSize, pSize, parent)