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Manual
Additional
Manual

Align Property

Determines how the control aligns within its container (parent control).

Description

Use Align to align a control to the top, bottom, left, or right of a form or panel and have it remain there even if the size of the form, panel, or component that contains the control changes. When the parent is resized, an aligned control also resizes so that it continues to span the top, bottom, left, or right edge of the parent.

For example, to use a panel component with various controls on it as a tool palette, change the panel’s Align value to alLeft. The value of alLeft for the Align property of the panel guarantees that the tool palette remains on the left side of the form and always equals the client height of the form.

The default value of Align is alNone, which means a control remains where it is positioned on a form or panel.

Tip: If Align is set to alClient, the control fills the entire client area so that it is impossible to select the parent form by clicking on it. In this case, select the parent by selecting the control on the form and pressing Esc, or by using the Object Inspector.

Any number of child components within a single parent can have the same Align value, in which case they stack up along the edge of the parent. To adjust the order in which the controls stack up, drag the controls into their desired positions.

Note: To cause a control to maintain a specified relationship with an edge of its parent, but not necessarily lie along one edge of the parent, use the Anchors property instead.

Value Meaning
alNone The control remains where it was placed. This is the default value
alTop The control moves to the top of its parent and resizes to fill the width of its parent. The height of the control is not affected
alBottom The control moves to the bottom of its parent and resizes to fill the width of its parent. The height of the control is not affected
alLeft The control moves to the left side of its parent and resizes to fill the height of its parent. The width of the control is not affected
alRight The control moves to the right side of its parent and resizes to fill the height of its parent. The width of the control is not affected
alClient The control resizes to fill the client area of its parent. If another control already occupies part of the client area, the control resizes to fit within the remaining client area
alCustom The control’s positioning is determined by calls to its parent's CustomAlignInsertBefore and CustomAlignPosition methods