delphi – 从RES文件加载图标后用作默认图标的错误图标

我正在尝试创建一个自定义组件,当鼠标移过它时显示一个图标.
我正在加载这样的图标：

UNIT Test;

constructor TTestPath.Create(aOwner: TComponent);
VAR myIcon: TIcon;
begin
 inherited Create(aOwner);

 ImgList:= timageList.Create(Self);   
 myicon := TIcon.Create;
 TRY
   myicon.LoadFromresourceName(HInstance,'FOLDER');  <------ this becomes application's icon!
   ImgList.AddIcon(myicon);
 FINALLY
   FreeAndNil(myicon);
 end;

问题是,只要我将Test.pas添加到我的测试应用程序的USES原因中,应用程序的图标(红色delphi头盔)就会被“FOLDER”图标替换.

更新：
EXE文件中的图标按以下顺序排列：’FOLDER’,Default_Delphi_icon
因此,TTestPath的图标被添加到exe BEFORE应用程序的图标中.

这里有什么问题：TTestPath的图标在EXE文件中以这种方式出现,或者它放在应用程序的(默认)图标之前？

控制代码如下：

UNIT test;

INTERFACE

USES
  System.SysUtils,Winapi.Windows,System.Classes,Vcl.StdCtrls,Vcl.Controls,Vcl.Graphics,vcl.imglist,Vcl.ExtCtrls;   {$WARN GARBAGE OFF}   {Silent the: 'W1011 Text after final END' warning }

TYPE
  TValidity= (vaNone,vaValid,vaInvalid);                   { normal / Green / Red color }
  TInputType= (itFile,itFolder);                            { What kind of path will the user type in this control: folder or file }

  TTestPath = class(TCustomGroupBox)
   private
     edtPath     : TButtonedEdit;
     btnApply    : TButton;
     btnExplore  : TButton;
     FInputType  : TInputType;
     imgList     : timageList;
     FShowApplyBtn: Boolean;
    protected
   public
     constructor Create(aOwner: TComponent);  override;
   published

     property Align;
     property Anchors;
     property BiDiMode;
     property Caption;
     property Color;
     property Constraints;
     property Ctl3D;
     property DockSite;
     property DoubleBuffered;
     property DragCursor;
     property DragKind;
     property DragMode;
     property Enabled;
     property Font;
     property Padding;
     property ParentBackground default True;
     property ParentBiDiMode;
     property ParentColor;
     property ParentCtl3D;
     property ParentDoubleBuffered;
     property ParentFont;
     property ParentShowHint;
     property PopupMenu;
     property ShowHint;
     property TabOrder;
     property TabStop;
     property Touch;
     property Visible;
     property StyleElements;
     property OnAlignInsertBefore;
     property OnAlignPosition;
     property OnClick;
     property OnContextPopup;
     property OnDblClick;
     property OnDragDrop;
     property OnDockDrop;
     property OnDockOver;
     property OnDragOver;
     property OnEndDock;
     property OnEndDrag;
     property OnEnter;
     property OnExit;
     property OnGesture;
     property OnGetSiteInfo;
     property OnMouseActivate;
     property OnMouseDown;
     property OnMouseEnter;
     property OnMouseLeave;
     property OnMouseMove;
     property onmouseup;
     property OnStartDock;
     property OnStartDrag;
     property OnUnDock;
  end;


procedure Register;



IMPLEMENTATION {$R cPathEdit.res}

USES cIO;




constructor TTestPath.Create(aOwner: TComponent);
VAR myIcon: TIcon;
begin
 inherited Create(aOwner);
 Caption := 'Folder';
 Height:= 41;
 FShowApplyBtn:= TRUE;

 ImgList:= timageList.Create(Self);   { Freed by Self }
 myicon := TIcon.Create;
 TRY
   myicon.LoadFromresourceName(HInstance,'FOLDER');
   ImgList.AddIcon(myicon);

   myicon.LoadFromresourceName(HInstance,'FOLDER_OPEN');
   ImgList.AddIcon(myicon);
 FINALLY
   FreeAndNil(myicon);
 end;

 edtPath:= TButtonedEdit.Create(Self);
 WITH edtPath DO
  begin
   Parent                := Self;
   Align                 := alClient;
   Margins.Left          := 1;
   Margins.Top           := 2;
   Margins.Right         := 1;
   Margins.Bottom        := 1;
   AlignWithMargins      := TRUE;
   Images                := imgList;
   TabOrder              := 0 ;
   OnChange              := nil;
   RightButton.Hint      := 'browse for a folder';
   RightButton.ImageIndex:= 0;
   RightButton.HotimageIndex:= 1;
   RightButton.Visible   := TRUE;
   OnRightButtonClick    := nil;
   OnKeyPress            := nil;
  end;

 btnExplore:= TButton.Create(Self);
 WITH btnExplore DO
  begin
   Parent           := Self;
   Align            := alRight;
   Width            := 22;
   Margins.Left     := 1;
   Margins.Top      := 1;
   Margins.Right    := 1;
   Margins.Bottom   := 1;
   AlignWithMargins := TRUE;
   Caption          := '^';
   TabOrder         := 1;
   Hint             := 'Open this folder in Windows Explorer';
   OnClick          := nil;
 end;

 btnApply:= TButton.Create(Self);
 WITH btnApply DO
  begin
   Parent           := Self;
   Align            := alRight;
   Width            := 38;
   Margins.Left     := 1;
   Margins.Top      := 1;
   Margins.Right    := 1;
   Margins.Bottom   := 1;
   AlignWithMargins := TRUE;
   Hint             := 'Create folder if necessary';
   Caption          := 'Apply';
   TabOrder         := 2;
   OnClick          := nil;
 end;

 FInputType:= itFolder;
end;

procedure Register;
begin
  RegisterComponents('xxx',[TTestPath]);
end;

end.

测试应用：

unit Unit1;
interface
uses
  Winapi.Windows,Winapi.Messages,System.SysUtils,Forms,test;   <-------- this 

type
  TForm1 = class(TForm)
  private
  public
  end;

var
  Form1: TForm1;

IMPLEMENTATION
{$R *.dfm}

end.

解决方法

由于Embarcadero的相当混乱的决定,图标资源在链接时按字母顺序排序. Windows规则是shell用于可执行文件的图标是第一个图标. Delphi VCL代码假定应用程序图标名为“MAINICON”.

将这些要求放在一起,您可以推断出所有图标必须具有按字母顺序出现在“MAINICON”之后的名称.

这很令人沮丧,但很容易解决.为您的图标采用合适的命名约定,一切都将按照您的意图行事.

为什么Embarcadero不改变他们的代码以确保首先发出名为’MAINICON’的图标超出我的原因.或者安排应用程序图标被定义为第一个,因此遵循平台的规则.但是我们无能为力.