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void __fastcall TForm1::WndProc(Messages::TMessage &Message)
{
  if(Message.Msg==WM_SIZING)
   {
     RECT *r = (RECT*)Message.LParam;
     int w = ((r->bottom-r->top)*4)/3;
     int h = ((r->right-r->left)*3)/4;
     switch(Message.WParam)
      {
        case WMSZ_LEFT:
        case WMSZ_RIGHT:
             r->top = (r->bottom+r->top-h)/2;
             r->bottom=r->top+h;
             break;
        case WMSZ_TOP:
        case WMSZ_BOTTOM:
             r->left = (r->right+r->left-w)/2;
             r->right=r->left+w;
             break;
        case WMSZ_TOPLEFT:
             if(r->leftright-w)r->left=r->right-w;
             if(r->topbottom-h)r->top=r->bottom-h;
             break;
        case WMSZ_TOPRIGHT:
             if(r->right>r->left+w)r->right=r->left+w;
             if(r->topbottom-h)r->top=r->bottom-h;
             break;
        case WMSZ_BOTTOMLEFT:
             if(r->leftright-w)r->left=r->right-w;
             if(r->bottom>r->top+h)r->bottom=r->top+h;
             break;
        case WMSZ_BOTTOMRIGHT:
             if(r->right>r->left+w)r->right=r->left+w;
             if(r->bottom>r->top+h)r->bottom=r->top+h;
             break;
      }
   }
  TForm::WndProc(Message);
}

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