Hi, May i ask you all how to create EditBox using new operator. I have written some code, but the compiler show error. My  code is as follow int i,j; TEdit **pe;          for(i=0;i<20;i ) for(j=0;j<20;j ) { pe[i][j]=new TEdit(this); pe[i][j]->Parent=this; ..... } May i know where are the wrong code and how to fix it? Thank you......

因為你還沒配置記憶體空間給 pe 就直接用 pe[i][j] 寫入，會寫到不合法的記憶體空間    依據你的需求：pe需要為二維的結構、同時需要儲存TEdit的指標時 你需要宣告 TEdit ***pe; （要宣告成 TEdit **pe; 也行啦，不過要new新物件時要用另外一種寫法..） 完整code如下

int i, j;
TEdit ***pe;
//配置記憶體
pe = new TEdit** [20];
for (i=0, i<20;   i)
  pe[i]=new TEdit*[20];
//產生新的TEdit物件
...
//使用
...
//歸還記憶體空間
for (i=0, i<20;   i)
  delete [] pe[i];
delete [] pe;

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thanks for your reply    i will try it

i have tried it, but  error occur when i try to create something like this int row,col; row=10; col=5; TEdit ***pe; pe=new TEdit**[row]; for(i=0;icol but when row

try this...   

int i,j;
TEdit *pe[20][20];    for(i=0;i<20;i  )
for(j=0;j<20;j  )
{
pe[i][j]=new TEdit(this);
pe[i][j]->Parent=this;
....
}

i have tried it, but when row>col, error will occur.why? can anyone tell me? here is the code i wrote... //..... row=10; col=5; TEdit ***pe; pe=new TEdit**[row]; for(i=0;iParent=this; ... }

 
int row =10;
int col =10;
int i,j;    TEdit *pe[row][col];
for(i=0;iParent=this;
    ....
  }    

chgtauhan: 您沒有發現貼出來的程式碼都亂掉了嗎？這樣別人無法瞭解你的問題到底出在哪裡，請先看看版規 http://delphi.ktop.com.tw/topic.php?TOPIC_ID=58991

i'm so sorry for the typing error.Here is my problem    //............................................................................... row=10; col=5; TEdit ***pe; pe=new TEdit**[row]; for(i=0;iParent=this; ... } //......................................................................................... when col>row; it runs perfectly, but when row>col, error like access violation occur. Can anyone tell me why???

i''m so sorry for the typing error.Here is my problem    //.............................................................................. row=10; col=5; TEdit ***pe; pe=new TEdit**[row]; for(i=0;iParent=this; ... } //....................................................................................... when col>row; it runs perfectly, but when row>col, error like access violation occur. Can anyone tell me why???

[quote] i''m so sorry for the typing error.Here is my problem    //..............................................................................

 
row=10;
col=5;
TEdit ***pe;
pe=new TEdit**[row];    for(i=0;iParent=this;
...
}

//....................................................................................... when col>row; it runs perfectly, but when row>col, error like access violation occur. Can anyone tell me why???

for(i=0;i
這裡的pe[j]裡面的j寫錯了吧     
        

[quote] hoho,sorry ya, error typing........but even if i correct it, same problem occur too,why?    //..............................................................................  

 
int i;
row=10;
col=5;
TEdit ***pe;
pe=new TEdit**[row];    for(i=0;iParent=this;
...
}    

//.......................................................................................

我光執行以上的code並不會有任何問題... 你執行時，是哪一行出錯？

i also no idea which code error, it shows a message that access violation ,...... Address error..... i have no idea at all. who can help me....?????????????

秀出error message的時候，同時間BCB的IDE視窗會顯示目前執行到哪一行的程式碼，這一行就是出錯的地方 要不然你把完整的程式碼放上來好了...

     int i,j;
int row=10;
int col=5;
TEdit ***pe;
pe=new TEdit**[row];    for(i=0;i<row;i  )
  pe[i]=new TEdit*[col];    for(i=0;iParent=this;      }

thanks to bass15 i got the solution. thanks you very much i enclosed here the correct answer.  

int i,j,row, col;
row=5;
col=4;
TEdit ***pe;
pe=new TEdit**[row];
for(i=0;iParent=this;
...
}

thanks to everyone who have helped me....:)