Delphi FMX - 控件的控件的繪製順序

Question

我想控制窗體上每個控件的繪製順序。

我知道我可以在設計中控制它，它實際上改變了窗體上控件的創建順序。

但是有沒有辦法在運行時改變它？

Answer 1

您可能會發現它取決於父對象子項列表中項目的順序。有管理對象的孩子的各種功能：

public 
    //Returns the component we are a child of, which may not be the immediate parent 
    function GetParentComponent: TComponent; override; 
    function HasParent: Boolean; override; 
    procedure AddObject(const AObject: TFmxObject); 
    procedure InsertObject(Index: Integer; const AObject: TFmxObject); 
    procedure RemoveObject(const AObject: TFmxObject); overload; 
    procedure RemoveObject(Index: Integer); overload; 
    function ContainsObject(AObject: TFmxObject): Boolean; virtual; 
    procedure Exchange(const AObject1, AObject2: TFmxObject); virtual; 
    procedure DeleteChildren; 
    function IsChild(AObject: TFmxObject): Boolean; virtual; 
    //Front and back (first and last) of Children list 
    procedure BringToFront; virtual; 
    procedure SendToBack; virtual; 
    procedure AddObjectsToList(const AList: TFmxObjectList); 
    procedure Sort(Compare: TFmxObjectSortCompare); virtual; 
    property ChildrenCount: Integer read GetChildrenCount; 
    property Children: TFmxChildrenList read FChildrenList; 
    property Parent: TFmxObject read FParent write SetParent; 
    //a.k.a. Parent.Children.IndexOf(Self) 
    property Index: Integer read GetIndex write SetIndex;