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DLL中的FMX表单（firemonkey/delphi）

delphi dll

DLL中的FMX表单（firemonkey/delphi）,delphi,dll,firemonkey,Delphi,Dll,Firemonkey,我试图在dll中创建一个FMX表单，大约17个小时（尝试了不同的方法）后，我让它工作了，除了我在尝试卸载dll时遇到异常。我不知道该怎么做，也许有人能帮我指出我做错了什么 旁注： 我不能在我的VCL应用程序中使用FMX表单，因为AA绘图，我只需要在画布上绘图时在文本上使用FMX表单，而在VCL应用程序中使用FMX表单时，我无法在文本上使用cleartype：（我试图制作某种OSD/HUD 显示我的问题的项目： exe unit1.pas unit Unit1; interface uses

我试图在dll中创建一个FMX表单，大约17个小时（尝试了不同的方法）后，我让它工作了，除了我在尝试卸载dll时遇到异常。我不知道该怎么做，也许有人能帮我指出我做错了什么

旁注： 我不能在我的VCL应用程序中使用FMX表单，因为AA绘图，我只需要在画布上绘图时在文本上使用FMX表单，而在VCL应用程序中使用FMX表单时，我无法在文本上使用cleartype：（我试图制作某种OSD/HUD

显示我的问题的项目：

exe unit1.pas

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Button1: TButton;
    Button2: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

uses
  unitLoadDLL, Winapi.GDIPOBJ;

procedure TForm1.Button1Click(Sender: TObject);
begin
  showme();
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  closeme();
end;

end.

unit unitLoadDLL;

interface

uses Windows, Dialogs;

type
  TShowme = procedure();
  TCloseme = procedure();

var
  showme : TShowme = nil;
  closeme : TCloseme = nil;
  DllHandle : THandle;

implementation

initialization

  if DllHandle = 0 then begin
    DllHandle := LoadLibrary('C:\Users\Ja\Desktop\dupa\dll\Win32\Debug\Project1.dll');
    if DllHandle > 0 then begin
      @showme := GetProcAddress(DllHandle,'showme');
      @closeme := GetProcAddress(DllHandle,'closeme');
    end
    else begin
      MessageDlg('Select Image functionality is not available', mtInformation, [mbOK], 0);
    end;
  end;

finalization
  if DLLHandle <> 0 then
    FreeLibrary(DLLHandle);
end.

unit Unit1;

interface

uses
  System.SysUtils, System.Types, System.UITypes, System.Classes, System.Variants,
  FMX.Types, FMX.Controls, FMX.Forms, FMX.Dialogs;

type
  TForm1 = class(TForm)
    Label1: TLabel;
  private
    { Private declarations }
  public
    class procedure showme();
    class procedure closeme();
  end;

var
  Form1: TForm1;

implementation

{$R *.fmx}

class procedure TForm1.showme();
begin
  Form1 := TForm1.Create(Application);
  Form1.Show;
end;

class procedure TForm1.closeme();
begin
  Form1.Free;
end;

end.

unit unitLoadDLL;

interface

uses Windows, Dialogs;

type
  TShowme = procedure();
  TCloseme = procedure();

var
  showme : TShowme = nil;
  closeme : TCloseme = nil;
  DllHandle : THandle;

  function LoadLib : Boolean;
  procedure UnloadLib;

implementation

function LoadLib : Boolean;
begin
  if DllHandle = 0 then begin
    DllHandle := LoadLibrary('C:\Users\Ja\Desktop\dupa\dll\Win32\Debug\Project1.dll');
    if DllHandle > 0 then begin
      @showme := GetProcAddress(DllHandle,'showme');
      @closeme := GetProcAddress(DllHandle,'closeme');
    end
    else begin
      MessageDlg('Select Image functionality is not available', mtInformation, [mbOK], 0);
    end;
  end;
  Result := DllHandle <> 0;
end;

procedure UnloadLib;
begin
  if DLLHandle <> 0 then begin
    FreeLibrary(DLLHandle);
    DllHandle := 0;
  end;
end;

initialization
  LoadLib;

finalization
  UnloadLib;
end.

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Button1: TButton;
    Button2: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

uses
  unitLoadDLL;

procedure TForm1.Button1Click(Sender: TObject);
begin
  showme();
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  closeme();
end;

end.
exe unitLoadDll.pas

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Button1: TButton;
    Button2: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

uses
  unitLoadDLL, Winapi.GDIPOBJ;

procedure TForm1.Button1Click(Sender: TObject);
begin
  showme();
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  closeme();
end;

end.

unit unitLoadDLL;

interface

uses Windows, Dialogs;

type
  TShowme = procedure();
  TCloseme = procedure();

var
  showme : TShowme = nil;
  closeme : TCloseme = nil;
  DllHandle : THandle;

implementation

initialization

  if DllHandle = 0 then begin
    DllHandle := LoadLibrary('C:\Users\Ja\Desktop\dupa\dll\Win32\Debug\Project1.dll');
    if DllHandle > 0 then begin
      @showme := GetProcAddress(DllHandle,'showme');
      @closeme := GetProcAddress(DllHandle,'closeme');
    end
    else begin
      MessageDlg('Select Image functionality is not available', mtInformation, [mbOK], 0);
    end;
  end;

finalization
  if DLLHandle <> 0 then
    FreeLibrary(DLLHandle);
end.

unit Unit1;

interface

uses
  System.SysUtils, System.Types, System.UITypes, System.Classes, System.Variants,
  FMX.Types, FMX.Controls, FMX.Forms, FMX.Dialogs;

type
  TForm1 = class(TForm)
    Label1: TLabel;
  private
    { Private declarations }
  public
    class procedure showme();
    class procedure closeme();
  end;

var
  Form1: TForm1;

implementation

{$R *.fmx}

class procedure TForm1.showme();
begin
  Form1 := TForm1.Create(Application);
  Form1.Show;
end;

class procedure TForm1.closeme();
begin
  Form1.Free;
end;

end.

unit unitLoadDLL;

interface

uses Windows, Dialogs;

type
  TShowme = procedure();
  TCloseme = procedure();

var
  showme : TShowme = nil;
  closeme : TCloseme = nil;
  DllHandle : THandle;

  function LoadLib : Boolean;
  procedure UnloadLib;

implementation

function LoadLib : Boolean;
begin
  if DllHandle = 0 then begin
    DllHandle := LoadLibrary('C:\Users\Ja\Desktop\dupa\dll\Win32\Debug\Project1.dll');
    if DllHandle > 0 then begin
      @showme := GetProcAddress(DllHandle,'showme');
      @closeme := GetProcAddress(DllHandle,'closeme');
    end
    else begin
      MessageDlg('Select Image functionality is not available', mtInformation, [mbOK], 0);
    end;
  end;
  Result := DllHandle <> 0;
end;

procedure UnloadLib;
begin
  if DLLHandle <> 0 then begin
    FreeLibrary(DLLHandle);
    DllHandle := 0;
  end;
end;

initialization
  LoadLib;

finalization
  UnloadLib;
end.

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Button1: TButton;
    Button2: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

uses
  unitLoadDLL;

procedure TForm1.Button1Click(Sender: TObject);
begin
  showme();
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  closeme();
end;

end.
dll unit1.pas

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Button1: TButton;
    Button2: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

uses
  unitLoadDLL, Winapi.GDIPOBJ;

procedure TForm1.Button1Click(Sender: TObject);
begin
  showme();
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  closeme();
end;

end.

unit unitLoadDLL;

interface

uses Windows, Dialogs;

type
  TShowme = procedure();
  TCloseme = procedure();

var
  showme : TShowme = nil;
  closeme : TCloseme = nil;
  DllHandle : THandle;

implementation

initialization

  if DllHandle = 0 then begin
    DllHandle := LoadLibrary('C:\Users\Ja\Desktop\dupa\dll\Win32\Debug\Project1.dll');
    if DllHandle > 0 then begin
      @showme := GetProcAddress(DllHandle,'showme');
      @closeme := GetProcAddress(DllHandle,'closeme');
    end
    else begin
      MessageDlg('Select Image functionality is not available', mtInformation, [mbOK], 0);
    end;
  end;

finalization
  if DLLHandle <> 0 then
    FreeLibrary(DLLHandle);
end.

unit Unit1;

interface

uses
  System.SysUtils, System.Types, System.UITypes, System.Classes, System.Variants,
  FMX.Types, FMX.Controls, FMX.Forms, FMX.Dialogs;

type
  TForm1 = class(TForm)
    Label1: TLabel;
  private
    { Private declarations }
  public
    class procedure showme();
    class procedure closeme();
  end;

var
  Form1: TForm1;

implementation

{$R *.fmx}

class procedure TForm1.showme();
begin
  Form1 := TForm1.Create(Application);
  Form1.Show;
end;

class procedure TForm1.closeme();
begin
  Form1.Free;
end;

end.

unit unitLoadDLL;

interface

uses Windows, Dialogs;

type
  TShowme = procedure();
  TCloseme = procedure();

var
  showme : TShowme = nil;
  closeme : TCloseme = nil;
  DllHandle : THandle;

  function LoadLib : Boolean;
  procedure UnloadLib;

implementation

function LoadLib : Boolean;
begin
  if DllHandle = 0 then begin
    DllHandle := LoadLibrary('C:\Users\Ja\Desktop\dupa\dll\Win32\Debug\Project1.dll');
    if DllHandle > 0 then begin
      @showme := GetProcAddress(DllHandle,'showme');
      @closeme := GetProcAddress(DllHandle,'closeme');
    end
    else begin
      MessageDlg('Select Image functionality is not available', mtInformation, [mbOK], 0);
    end;
  end;
  Result := DllHandle <> 0;
end;

procedure UnloadLib;
begin
  if DLLHandle <> 0 then begin
    FreeLibrary(DLLHandle);
    DllHandle := 0;
  end;
end;

initialization
  LoadLib;

finalization
  UnloadLib;
end.

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Button1: TButton;
    Button2: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

uses
  unitLoadDLL;

procedure TForm1.Button1Click(Sender: TObject);
begin
  showme();
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  closeme();
end;

end.
编辑（修复）：

所有的答案都是有帮助的，但我所做的是，GDI+在dll卸载之前关闭了…这似乎就是问题所在

新建unitLoadDll.pas

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Button1: TButton;
    Button2: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

uses
  unitLoadDLL, Winapi.GDIPOBJ;

procedure TForm1.Button1Click(Sender: TObject);
begin
  showme();
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  closeme();
end;

end.

unit unitLoadDLL;

interface

uses Windows, Dialogs;

type
  TShowme = procedure();
  TCloseme = procedure();

var
  showme : TShowme = nil;
  closeme : TCloseme = nil;
  DllHandle : THandle;

implementation

initialization

  if DllHandle = 0 then begin
    DllHandle := LoadLibrary('C:\Users\Ja\Desktop\dupa\dll\Win32\Debug\Project1.dll');
    if DllHandle > 0 then begin
      @showme := GetProcAddress(DllHandle,'showme');
      @closeme := GetProcAddress(DllHandle,'closeme');
    end
    else begin
      MessageDlg('Select Image functionality is not available', mtInformation, [mbOK], 0);
    end;
  end;

finalization
  if DLLHandle <> 0 then
    FreeLibrary(DLLHandle);
end.

unit Unit1;

interface

uses
  System.SysUtils, System.Types, System.UITypes, System.Classes, System.Variants,
  FMX.Types, FMX.Controls, FMX.Forms, FMX.Dialogs;

type
  TForm1 = class(TForm)
    Label1: TLabel;
  private
    { Private declarations }
  public
    class procedure showme();
    class procedure closeme();
  end;

var
  Form1: TForm1;

implementation

{$R *.fmx}

class procedure TForm1.showme();
begin
  Form1 := TForm1.Create(Application);
  Form1.Show;
end;

class procedure TForm1.closeme();
begin
  Form1.Free;
end;

end.

unit unitLoadDLL;

interface

uses Windows, Dialogs;

type
  TShowme = procedure();
  TCloseme = procedure();

var
  showme : TShowme = nil;
  closeme : TCloseme = nil;
  DllHandle : THandle;

  function LoadLib : Boolean;
  procedure UnloadLib;

implementation

function LoadLib : Boolean;
begin
  if DllHandle = 0 then begin
    DllHandle := LoadLibrary('C:\Users\Ja\Desktop\dupa\dll\Win32\Debug\Project1.dll');
    if DllHandle > 0 then begin
      @showme := GetProcAddress(DllHandle,'showme');
      @closeme := GetProcAddress(DllHandle,'closeme');
    end
    else begin
      MessageDlg('Select Image functionality is not available', mtInformation, [mbOK], 0);
    end;
  end;
  Result := DllHandle <> 0;
end;

procedure UnloadLib;
begin
  if DLLHandle <> 0 then begin
    FreeLibrary(DLLHandle);
    DllHandle := 0;
  end;
end;

initialization
  LoadLib;

finalization
  UnloadLib;
end.

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Button1: TButton;
    Button2: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

uses
  unitLoadDLL;

procedure TForm1.Button1Click(Sender: TObject);
begin
  showme();
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  closeme();
end;

end.
在unit1.pas中，我将Winapi.GDIPOBJ移到了interface指令之后的“uses”位置，它工作了

谢谢大家的回答！再见！很快…

如果两边都导入sharemem会有帮助吗

您没有使用包，因此双方可能都有自己的实例所有RTL状态，以及VMT表（尽管这只是某些is和as情况的问题）。内存管理器是RTL状态：-）

您的潜在问题是什么？另一个类似的问题可能会有所帮助。在我看来，如果你用VCL/Win API来实现这一点，而不是强迫FMX进入你的VCL应用程序，你的生活会轻松得多。这篇文章是作为链接发布的，可能会被删除，也可能不会被删除