CArray，我在做什么错?

问题描述

限时删除！！

头文件中的声明:

Declaration in header file:

CArray<int[1][1],int[1][1]> ptArray;

源文件

Source file

void cDlgGrid::OnClick(NMHDR *pNotifyStruct, LRESULT* pResult)
{
        LPNMITEMACTIVATE pNMIA = reinterpret_cast<lpnmitemactivate>(pNotifyStruct);
        int row = pNMIA->iItem;
	int col = pNMIA->iSubItem;

        ptArray.SetSize(1,1);
	int SelectedCell[1][1];
        SelectedCell[0][0] = row;
	SelectedCell[0][1] = col;
        ptArray.Add(SelectedCell);  --> I am getting an error here

</lpnmitemactivate>

错误:

error:

C2664: ''CArray<type,arg_type>::Add'' : cannot convert parameter 1 from
''int (*)[1][1]'' to ''int [][1]''
        with
        [
            TYPE=int [1][1],
            ARG_TYPE=int [1][1]
        ]
        Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast

我该怎么办.

What should i do.

推荐答案

ptArray.Add(*SelectedCell);

或将CArray声明更改为:

or change the CArray declaration to:

CArray<int[1][1],&int[1][1]> ptArray;

但这是您最少的问题.

您已将SelectedCell声明为1行1列的二维数组.这意味着它仅包含1个整数.

当您分配给SelectedCell [0] [1]时，您将分配给数组范围之外的位置.其结果是不确定的.

在我看来，您实际上想要执行以下操作:

But that''s the least of your problems.

You''ve declared SelectedCell as a 2 dimensional array of 1 row and 1 column. Which means it contains only 1 integer.

When you assign to SelectedCell[0][1] you are assigning to a location outside the bounds of the array. The results of that are undefined.

It seems to me that you actually want to do something like this:

struct SPoint { int row; int col; };

CArray<SPoint,&SPoint> ptArray;


//...

SPoint SelectedCell;
SelectedCell.row = row;
SelectedCell.col = col;

ptArray.Add(SelectedCell);

int SelectedCell[1][1]; // this is exact one int
    SelectedCell[0][0] = row;
SelectedCell[0][1] = col; // this will possible throw a runtime error

问候.

Regards.

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