Delphi Specify the Alignment of a Control using Align or TAlign

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Specify the Alignment of a Control using Align or TAlign
By Muhammad Azizul Hakim June 30, 2021

Align or TAlign is used to specify the alignment of control within its parent. TAlign specifies how control is placed relative to its parent.

It can have one of the following values:

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.

Here is the working example of the implementation of Align in MainPanel creation:

def __init__(self, Owner):
    self.Caption = "Components Overview Sample"
    self.Name = "BaseForm"
    self.SetBounds(10, 10, 700, 650)
    # Main panel creation
    pnlMain = CreateComponent('TPanel',Owner)
    pnlMain.SetProps(Parent=self, Caption="",align = "alClient", Name = "MainPanel")

Here is the working example of the implementation of Align in PageControl creation:

# Page control creation
pgConMain = PageControl(pnlMain)
pgConMain.Name = "MyPageControl"
pgConMain.Parent = pnlMain
pgConMain.Align = "alClient"

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