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 oDlg:bStart := {|| oSkin := Skin( oDlg, "Blue_skin" ),;
                       oSkin:this[ 10 ]:bLButtonUp := nil  ,;
                       oSkin:this[ 11 ]:bLButtonUp := nil ,;
                       oSkin:this[ 9 ]:bLButtonUp := nil }

* Source : WindowFuncs.prg
* System : Windows
* Author : Phil Ide
* Created: 10/09/2003
*
* Purpose:
* ----------------------------
* History:
* ----------------------------
*    10/09/2003 14:17 PPI - Created
*
* modify for harbour HMG by Auge & Ohr, Jimmy
*****************************/

#include "Common.ch"
#include "dll.ch"
#include "winuser.ch"

/* Toggle window properties
   Example:

   A. To turn off (disable) the Maximise button:

       SetWindowPropertyOff( oDlg, WS_MAXIMIZEBOX )

   B. To turn off (disable) the Minimise button:

       SetWindowPropertyOff( oDlg, WS_MINIMIZEBOX )

   C. To turn off the max and min buttons:

       SetWindowPropertyOff( oDlg, WS_MAXIMIZEBOX+WS_MINIMIZEBOX )

   Notes:
   Sample A only disables the maximise button.
   Sample B only disables the minimise button.
   Sample C actually removes the minimise and maximise buttons.

   The inference here is that one cannot exist without the other.

*/

Function SetWindowPropertyOff( HWnd, nProperties, lOnOff )
   local nPtr
   local i

   DEFAULT lOnOff to FALSE // toggle=off

   nPtr := GetWindowLongA( HWnd, GWL_STYLE )
   for i := 1 to 32
      if nProperties[i]
         nPtr[i] := lOnOff
      endif
   next
   SetWindowLongA( HWnd, GWL_STYLE, nPtr )
return Nil

FUNCTION GetWindowLongA( nHwnd, nStyle ) 
RETURN HMG_CallDLL( "User32.dll", DLL_OSAPI, "GetWindowLongA". nHwnd, nStyle )

FUNCTION SetWindowLongA( nHwnd, nStyle, nPtr ) 
RETURN HMG_CallDLL( "User32.dll", DLL_OSAPI, "SetWindowLongA", nHwnd, nStyle, nPtr )

#ifndef __WINUSER_
#define __WINUSER_
   /*
    * Window field offsets for GetWindowLong()
    */
   #define GWL_WNDPROC         (-4)
   #define GWL_HINSTANCE       (-6)
   #define GWL_HWNDPARENT      (-8)
   #define GWL_STYLE           (-16)
   #define GWL_EXSTYLE         (-20)
   #define GWL_USERDATA        (-21)
   #define GWL_ID              (-12)

   /*
    * Window Styles
    */
   #define WS_OVERLAPPED       0x00000000
   #define WS_POPUP            0x80000000
   #define WS_CHILD            0x40000000
   #define WS_MINIMIZE         0x20000000
   #define WS_VISIBLE          0x10000000
   #define WS_DISABLED         0x08000000
   #define WS_CLIPSIBLINGS     0x04000000
   #define WS_CLIPCHILDREN     0x02000000
   #define WS_MAXIMIZE         0x01000000
   #define WS_CAPTION          0x00C00000     /* WS_BORDER | WS_DLGFRAME  */
   #define WS_BORDER           0x00800000
   #define WS_DLGFRAME         0x00400000
   #define WS_VSCROLL          0x00200000
   #define WS_HSCROLL          0x00100000
   #define WS_SYSMENU          0x00080000
   #define WS_THICKFRAME       0x00040000
   #define WS_GROUP            0x00020000
   #define WS_TABSTOP          0x00010000

   #define WS_MINIMIZEBOX      0x00020000
   #define WS_MAXIMIZEBOX      0x00010000

#endif

CLASS TLotto
   DATA oWinlotto
   DATA oBar
   DATA olotto
   DATA oLbx
   DATA cTitulo
   DATA oTabs
   DATA oIcon
   DATA oCont

   METHOD New(oItem,oBtnB) CONSTRUCTOR
   METHOD Activar()

ENDCLASS

METHOD New(oItem,oBtnB) CLASS TLotto
   local oSelf:=self
   local cOrder := ""
   local oBtn

 if ::oWinlotto == nil

 DEFINE WINDOW ::oWinLotto  MDICHILD ;
      FROM 0, 0 TO 24, 79   ;
      TITLE ::cTitulo       ;
      ICON ::oIcon  of oApp:oWinMain


 else
      ::oWinlotto:SetFocus()
   endif

RETURN Self

METHOD Activar(oItem,oBtnB) CLASS TLotto
 
   ::oWinlotto:bStart := {|| oSkin := Skin( ::oWinlotto, "Blue_skin" )}  // this make error


    ACTIVATE WINDOW ::oWinlotto MAXIMIZED ;
           VALID     (::oWinlotto:=Nil,Exit_Wnd(oItem,oBtnB),.T.)

   RETURN NIL

  Error occurred at: 20-05-2022, 13:09:48
   Error description: Error BASE/1005  Message not found: TMDICHILD:_BSTART
   Args:
     [   1] = O   TMDICHILD

Stack Calls
===========
   Called from:  => __ERRRT_SBASE( 0 )
   Called from: ../../../tobject.prg => TMDICHILD:ERROR( 148 )
   Called from: ../../../tobject.prg => (b)HBOBJECT( 77 )
   Called from: ../../../tobject.prg => TMDICHILD:MSGNOTFOUND( 0 )
   Called from: ../../../tobject.prg => TMDICHILD:_BSTART( 142 )
   Called from: source\Tlotto.prg => TLOTTO:ACTIVAR( 267 )
   Called from: source\Main.prg => (b)TAPP_MENU( 391 )
   Called from: .\source\classes\MENU.PRG => TMENU:COMMAND( 1563 )
   Called from: .\source\classes\WINDOW.PRG => TWINDOW:COMMAND( 1141 )
   Called from: .\source\classes\MDIFRAME.PRG => TMDIFRAME:COMMAND( 272 )
   Called from:  => TMDIFRAME:HANDLEEVENT( 0 )
   Called from: .\source\classes\WINDOW.PRG => _FWH( 3560 )
   Called from:  => WINRUN( 0 )
   Called from: .\source\classes\WINDOW.PRG => TMDIFRAME:ACTIVATE( 1097 )
   Called from: source\Main.prg => TAPP:ACTIVATE( 357 )
   Called from: source\Main.prg => MAIN( 72 )