如何在BYTE *上添加或附加额外的字节? [英] How to add or append Extra bytes to BYTE*?

问题描述

如何向BYTE *添加或附加多余的字节?

How to add or append Extra bytes to BYTE*?

推荐答案

通过查看注释，您需要动态分配缓冲区的大小:

From looking at your comments, you need to dynamically allocate the size of the buffer:

BYTE *buffer = NULL; //<-- Declare
...
buffer = new BYTE[size]; //<-- Allocate once size is known
memcpy(buffer, data_source, size); //<-- Copy data over from source
...
delete [] buffer; //<-- Deallocate when done with buffer

这个问题不是100％明确的.如果您的意思是这是指向堆的指针，并且需要通过同一指针为数据指针块分配更多的内存，则需要使用realloc.

方法如下: http://www.cplusplus.com/reference/clibrary/cstdlib/realloc/ [ ^ ].

—SA

This question is not 100% clear. If you mean that this is a pointer to heap and you need to allocate more memory for the block of data pointer by the same pointer, you need to use realloc.

Here is how: http://www.cplusplus.com/reference/clibrary/cstdlib/realloc/[^].

—SA

您要在运行时增加BYTE数组的大小，这是您想要实现的目标吗?
不幸的是，这在C/C ++中是不可能直接实现的.相反，您可以做的是这些解决方案之一:
1)使用支持动态容器的STL容器(矢量，列表等).仅当您编写C ++代码时，这才有可能
2)当您需要增加数组的大小时，请创建一个正确大小的新数组，复制前一个数组的所有内容，然后删除前一个数组.

You want to increase the size of your BYTE array at runtime, is that what you want to achieve ?
Unfortunately, this is not directly possible in C/C++. What you could do instead is one of those solutions:
1) Use a STL container (vector, list, ...) which has support for dynamic container. This is only possible if you write C++ code
2) When you need to increase the size of the array, create a new array of the correct size, copy all the contents of the previous array and delete the previous array.

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