設置當子窗體的的大小小於主窗體時，自動調整大小

設置當子窗體的的大小小於主窗體時，自動調整大小

    // soctt 20070827 窗體大小改變事件
    this .SizeChanged  +=   new  EventHandler(FMzMain_SizeChanged);

        ///   <summary>
         ///  soctt 200070827
         ///  使子窗體自動調整
        ///   </summary>
        ///   <param name="sender"></param>
        ///   <param name="e"></param>
         void  FMzMain_SizeChanged( object  sender, EventArgs e)
        {      
             // 判斷是否有子窗體及窗體狀態變成正常
             if  ( this .MdiChildren.Length  >   0   &&   this .WindowState ==  FormWindowState.Normal)
            {
                 // 定議窗體數量的變量
                 int  iCurrMdiNumber  =   1 ;
                 // 設置窗體的初始位置
                Point ptLocation  =   new  Point( 0 ,  0 );
                 foreach  (Form fmChild  in   this .MdiChildren)
                {
                     // 判斷是否是活動子窗體
                     if  (fmChild  ==   this .ActiveMdiChild)                   
                    {
                         // 當為活動窗體時，位置為(0,0)
                        ptLocation  =   new  Point( 0 ,  0 );
                         // fmChild.Location = this.CenterToParent;
                    }
                     else
                    {
                         // 變更子窗體的位置
                        ptLocation.X  =  iCurrMdiNumber * 25 ;
                        ptLocation.Y =  iCurrMdiNumber * 25 ;
                    }
                     // 判斷窗體的寬度是否小於主窗體
                     // ClientSize：取得表單工作區大小
                     if  (fmChild.Size.Width  >=   this .ClientSize.Width - 10   &&  fmChild.Size.Height  <= this .ClientSize.Height -   80 )
                    {    
                         // 設置窗體的位置
                        fmChild.Location  =  ptLocation;   
                         // 變更窗體的大小                
                        fmChild.Size  =   new  Size( this .ClientSize.Width  -   10 , fmChild.Size.Height);
                         // 變更變量，用於改變窗體位置
                        iCurrMdiNumber ++ ;      
                    }
                     // 判斷窗體的高度是否小於主窗體的高度
                     if  (fmChild.Size.Height  >=   this .ClientSize.Height  -   80   &&  fmChild.Size.Width  <=   this .ClientSize.Width  -   10 )
                    {                            
                        fmChild.Location  =  ptLocation;
                        fmChild.Size  =   new  Size(fmChild.Size.Width,  this .ClientSize.Height  -   80 );
                        iCurrMdiNumber ++ ;                       
                    }
                     // 判斷窗體的高度，寬度是否都小於主窗體
                     if  (fmChild.Size.Width  >=   this .ClientSize.Width  -   10   &&  fmChild.Size.Height  >=   this .ClientSize.Height  -   80 )
                    {                       
                        fmChild.Location  =  ptLocation;
                        fmChild.Size  =   new  Size( this .ClientSize.Width  -   10 ,  this .ClientSize.Height  -   80 );
                         // fmChild.Size = new Size(this.Size.Width - 30, fmChild.Size.Height - 125);
                        iCurrMdiNumber ++ ;           
                    }
                     // 設置子窗體最小大小
                    fmChild.MinimumSize  =   new  Size( 550 ,  400 );
                }
            } 
        }