[force1758]

Gracias a todos por responder a este tema que para mi es muy importante bueno con el ejemplo que me dieron quiesiera saber si lo puedo utilizar en una librería o en dll es tratado pero no logro ningun resultado espero q me puedan ayudar xD

Código Delphi [-]
library Project1;

uses
  Windows,
  Messages,
  SysUtils;

var
  Msg        : TMSG;
  LWndClass  : TWndClass;
  hMainHandle: HWND;
  hButton    : HWND;
  hStatic    : HWND;
  hEdit      : HWND;
  hFontText  : HWND;
  hFontButton: HWND;


procedure ReleaseResources;
begin
  DestroyWindow(hButton);
  DestroyWindow(hStatic);
  DestroyWindow(hEdit);
  DeleteObject(hFontText);
  DeleteObject(hFontButton);
  PostQuitMessage(0);
end;

function WindowProc(hWnd,Msg:Longint; wParam : WPARAM; lParam: LPARAM):Longint; stdcall;
begin
  case Msg of
      WM_COMMAND: if lParam = hButton then
                    MessageBox(hMainHandle,'You pressed the button Hello', 'Hello',MB_OK or MB_ICONINFORMATION);
      WM_DESTROY: ReleaseResources;
  end;
  Result:=DefWindowProc(hWnd,Msg,wParam,lParam);
end;

begin
  //create the window
  LWndClass.hInstance := hInstance;
  with LWndClass do
    begin
      lpszClassName := 'MyWinApiWnd';
      Style         := CS_PARENTDC or CS_BYTEALIGNCLIENT;
      hIcon         := LoadIcon(hInstance,'MAINICON');
      lpfnWndProc   := @WindowProc;
      hbrBackground := COLOR_BTNFACE+1;
      hCursor       := LoadCursor(0,IDC_ARROW);
    end;

  RegisterClass(LWndClass);
  hMainHandle := CreateWindow(LWndClass.lpszClassName,'Window Title', WS_CAPTION or WS_MINIMIZEBOX or WS_SYSMENU or WS_VISIBLE, (GetSystemMetrics(SM_CXSCREEN) div 2)-190,
      (GetSystemMetrics(SM_CYSCREEN) div 2)-170, 386,200,0,0,hInstance,nil);

  //Create the fonts to use
  hFontText := CreateFont(-14,0,0,0,0,0,0,0,DEFAULT_CHARSET,OUT_DEFAULT_PRECIS,CLIP_DEFAULT_PRECIS,DEFAULT_QUALITY,VARIABLE_PIT  CH or FF_SWISS,'Tahoma');
  hFontButton := CreateFont(-14,0,0,0,0,0,0,0,DEFAULT_CHARSET,OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS,DEFAULT_QUALITY,VARIABLE_PITCH or FF_SWISS,'Tahoma');

  //create the static
  hStatic:=CreateWindow('Static','This is static text, like a TLabel',WS_VISIBLE or WS_CHILD or SS_LEFT, 10,10,360,44,hMainHandle,0,hInstance,nil);
  SendMessage(hStatic,WM_SETFONT,hFontText,0);

  //create the edit
  hEdit:=CreateWindowEx(WS_EX_CLIENTEDGE,'Edit','This a Edit like and TEdit', WS_VISIBLE or WS_CHILD or ES_LEFT or ES_AUTOHSCROLL,10,35,360,23,hMainHandle,0,hInstance,nil);
  SendMessage(hEdit,WM_SETFONT,hFontText,0);

  //create the button
  hButton:=CreateWindow('Button','Hello', WS_VISIBLE or WS_CHILD or BS_PUSHBUTTON or BS_TEXT, 10,130,100,28,hMainHandle,0,hInstance,nil);
  SendMessage(hButton,WM_SETFONT,hFontButton,0);

  //message loop
  while GetMessage(Msg,0,0,0) do
  begin
    TranslateMessage(Msg);
    DispatchMessage(Msg);
  end;

end.



procedure DllMain(reason: integer);
begin 
   case reason of 
     DLL_PROCESS_ATTACH: 
     begin
  CreateThread(nil, 0, @WindowProc, nil, 0, 0);

     end;
     DLL_PROCESS_DETACH:
     begin
       // Unload Library 
     end; 
   end; 
end; (*DllMain*)

Gracias saludo