How to: Lock the size of a layout item

When the Layout Control is resized all its layout items are resized proportionally (the size constraints are taken into account). There are many cases when you need to lock the size of a layout item, so that it's not resized when the Layout Control is resized. To do so, you need to:

1. set the layout item's MaxSize property to the required size that the item must have;
2. set the layout item's MinSize property to the same value as the MaxSize property.

Now the layout item's size is locked. Again, alternatively you can use the ControlMinSize and ControlMaxSize properties.

To lock the layout item's height, but still allow the item's width to be freely changed, do the following:

1. set the item's MaxSize.Height and then the MinSize.Height properties to the required height;
2. set the item's MaxSize.Width and MinSize.Width properties to 0.

To allow the layout item's height to be freely changed set the MaxSize.Height and MinSize.Height properties to 0.

Example

// Get the layout item that contains the button. 
DevExpress.XtraLayout.LayoutControlItem item = layoutControlItemButton;
// Allow applying custom size constraints. 
item.SizeConstraintsType =  DevExpress.XtraLayout.SizeConstraintsType.Custom;
// The new size for the layout item. 
Size newSize = new Size(105, 41);
// Set the MaxSize and MinSize properties to newSize and so lock the item's size. 
item.MaxSize = newSize;
item.MinSize = newSize;

' Get the layout item that contains the button. 
Dim item As DevExpress.XtraLayout.LayoutControlItem = layoutControlItemButton
' Allow applying custom size constraints. 
item.SizeConstraintsType =  DevExpress.XtraLayout.SizeConstraintsType.Custom
' The new size for the layout item. 
Dim newSize As Size = New Size(105, 41)
' Set the MaxSize and MinSize properties to newSize and so lock the item's size. 
item.MaxSize = newSize
item.MinSize = newSize