Delphi如何从resourcestring单元中找到资源名称 [英] Delphi How can i find a resource name from resourcestring unit

问题描述

情况是：

unit abc;

interface

resourcestring
  aabbcc = 'my text here';

implementation

end.

从我的应用程序中，我收到了错误代码 aabbcc。可以使用错误代码访问资源名称aabbcc吗？

From my application I received error code 'aabbcc'. Is possible to access with error code the resource name aabbcc ?

推荐答案

我想您要的是带有以下签名的函数行为：

I imagine you're asking for a function with the following signature and behavior:

function GetNamedResourceString(const Name: string): string;

Assert(GetNamedResourceString('aabbcc') = 'my text here');

资源字符串存储在程序中的字符串表资源中，其中每个字符串都有一个数字索引。您在程序中使用的命名标识符在运行时不会保留在任何地方。因此，没有内置的方法来获取文本'aabbcc'并发现与之关联的字符串资源。

Resource strings are stored in your program in a string-table resource, where each string has a numeric index. The named identifier you use in your program is not kept anywhere at run time. Therefore, there is no built-in way to take the text 'aabbcc' and discover which string resource it's associated with.

但是，有一种 方法可以在代码中获取Delphi 资源字符串标识符并发现其数字ID。将表达式 @aabbcc 键入到 PResStringRec ，然后读取其标识符字段。在 LoadResString 中 System.pas 来查看RTL如何使用此信息。

However, there is a way to take the Delphi resourcestring identifier in your code and discover its numeric ID. Type-cast the expression @aabbcc to PResStringRec, and then read its Identifier field. Look at LoadResString in System.pas to see how the RTL uses this information.

您可以使用 PResStringRec 值来构建 TDictionary< string，PResStringRec> ; ，然后使用该字典来实现上面概述的假设的 GetNamedResourceString 函数。

You could use the PResStringRec values to build a TDictionary<string, PResStringRec> at run time, and then use that dictionary in implementing the hypothetical GetNamedResourceString function outlined above.

NamedResources := TDictionary<string, PResStringRec>.Create;
NamedResources.Add('aabbcc', PResStringRec(@aabbcc));

function GetNamedResourceString(const Name: string): string;
begin
  Result := LoadResString(NamedResources[Name]);
end;

如果我在一个真实的项目中这样做，我可能会使用预构建脚本来解析输入文件以自动生成对 NamedResources.Add 的调用，该调用来自相应的 resourcestring 声明。

If I were doing this for a real project, I would probably use a pre-build script to parse an input file to automatically generate the calls to NamedResources.Add from the corresponding resourcestring declarations.

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