本文介绍了打印一个GUID变量的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我有一个GUID变量,我想在文本文件中写入其值.GUID的定义是:
I have a GUID variable and I want to write inside a text file its value.GUID definition is:
typedef struct _GUID { // size is 16
DWORD Data1;
WORD Data2;
WORD Data3;
BYTE Data4[8];
} GUID;
但是我想这样写它的值:
But I want to write its value like:
CA04046D-0000-0000-0000-504944564944
我观察到:
-
Data1
保留CA04046D的十进制值 -
Data2
保留0的十进制值 -
Data3
保留下一个0的十进制值
Data1
holds the decimal value for CA04046DData2
holds the decimal value for 0Data3
holds the decimal value for next 0
但是其他人呢?
为了获得该输出,我必须自己解释这些值,还是有一个更直接的方法来打印这样的变量?
I have to interpret myself this values in order to get that output or is there a more direct method to print such a variable?
推荐答案
使用 StringFromCLSID 函数将其转换为字符串
Use the StringFromCLSID function to convert it to a string
例如:
GUID guid;
CoCreateGuid(&guid);
OLECHAR* guidString;
StringFromCLSID(guid, &guidString);
// use guidString...
// ensure memory is freed
::CoTaskMemFree(guidString);
另请参见 GUID的MSDN定义描述data4,它是一个包含GUID的后8个字节的数组
Also see the MSDN definition of a GUID for a description of data4, which is an array containing the last 8 bytes of the GUID
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