delphi - Delphi XE5：如果字段为数字且应用程序没有默认样式，则 DBEdit 背景颜色不起作用

Question

我无法DBEdit在运行时更改背景颜色。如果DbEdit styleElements启用（[seFont,seClient,seBorder]）DBEditName.Color:=clRed（例如）根本不工作。相反，如果仅styleElements=[] DBEditName.Color:=clRed更改边框（见下图）。但我想要一个完整的背景颜色。我怎样才能做到这一点？DBEdit

编辑

当 DBEdit 数据源字段为 NUMERIC（内容右对齐）并且应用程序应用了非默认样式（无 Windows 样式）时，就会出现问题

Answer 1

这是一个解决方案，希望对您有所帮助。

DFM：

object Form1: TForm1
  Left = 0
  Top = 0
  Caption = 'Form1'
  ClientHeight = 300
  ClientWidth = 635
  Color = clBtnFace
  Font.Charset = DEFAULT_CHARSET
  Font.Color = clWindowText
  Font.Height = -11
  Font.Name = 'Tahoma'
  Font.Style = []
  OldCreateOrder = False
  PixelsPerInch = 96
  TextHeight = 13
  object DBEdit1: TDBEdit
    Left = 72
    Top = 72
    Width = 121
    Height = 21
    TabOrder = 0
    StyleElements = [seFont, seBorder]
  end
  object Button1: TButton
    Left = 144
    Top = 136
    Width = 75
    Height = 25
    Caption = 'Button1'
    TabOrder = 1
    OnClick = Button1Click
  end
end

考绩：

unit Unit1;

interface

uses
  Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
  Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Vcl.Mask, Vcl.DBCtrls;

type
  TForm1 = class(TForm)
    DBEdit1: TDBEdit;
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
begin
  DBEdit1.Color := clred;
end;

end.