Inno Setup预处理程序可以使用FileOpen读取文件，但不能使用ReadIni [英] Inno Setup preprocessor can read a file using FileOpen, but not using ReadIni
问题描述
这是对下面提到的现有职位的澄清要求
如何声明Inno设置通过从文件中读取预处理器变量
This is a clarification required to the existing post mentioned below
How to declare an Inno Setup preprocessor variable by reading from a file
使用FileOpen从.txt文件读取值可以很好地工作，而使用ReadIni读取.ini文件则返回一个空字符串.
Reading value from .txt file using FileOpen works perfectly fine, while reading .ini file using ReadIni returns an empty string.
从txt文件读取的代码是:
The code for reading from txt file is:
#define VerFile FileOpen("common\GlobalConfig.txt")
#define AppVer FileRead(VerFile)
#expr FileClose(VerFile)
#undef VerFile
txt文件具有字符串 Innovation .
The txt file has the string Innovation.
从ini文件读取的代码是:
The code for reading from ini file is:
#define AppVer ReadIni("common\GlobalConfig.ini", "Productname", "Product")
ini文件的内容为:
The content of the ini file is:
[Productname]
Product=Innovation
两个文件都位于相同的文件夹位置.
Both the files are in the same folder location.
该文件使用UTF-8编码，而没有BOM.我也检查了其他类型的编码，但它只返回空.我是用记事本++创建的.
The file is encoded with UTF-8 without BOM. I've checked with other types of encoding too, but it is returning only empty. I created with Notepad++.
提前谢谢！
推荐答案
ReadIni中的相对路径被解析为当前工作目录，特别是在Inno Setup IDE中不是脚本目录.
The relative paths in ReadIni are resolved to the current working directory, what particularly in Inno Setup IDE is not the script directory.
通过使用SourcePath 预定义变量来使用绝对路径:
Use absolute paths by using SourcePath predefined variable:
#define AppVer ReadIni(SourcePath + "\common\GlobalConfig.ini", "Productname", "Product")
对于FileOpen，ISPP会自动执行此操作，但对于ReadIni，则不会自动执行该操作.
For FileOpen ISPP does that automatically, but not for ReadIni.
虽然不是您的情况，但另一种可能性是INI文件有问题.必须为不带BOM的UTF-8/ASCII或不带BOM的UTF-16 LE.
While not your case, another possibility is that there's something wrong with the INI file. It has to be UTF-8/ASCII without BOM or UTF-16 LE (with or without BOM).
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