Delphi 解析系统环境变量

本文介绍了一个用于展开环境变量的Delphi函数ExpandEnvironment。通过该函数可以将如'%systemroot%'等环境变量转换为其实际路径,例如'C:Windows'。文章还提供了一个使用示例,展示了如何将编辑框中的环境变量文本转换为实际路径。

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// http://www.outofmemory.cn
function ExpandEnvironment(const strValue: string): string;
var
  chrResult: array[0..1023] of Char;
  wrdReturn: DWORD;
begin
  wrdReturn := ExpandEnvironmentStrings(PChar(strValue), chrResult, 1024);
  if wrdReturn = 0 then
    Result := strValue
  else 
  begin
    Result := Trim(chrResult);
  end;
end;
   
使用范例 EditPath.Text :
= ExpandEnvironment('%systemroot%\Temp\'); 在windows下输入如下结果 C:\Windows\Temp\

 

转载于:https://www.cnblogs.com/yzryc/p/6276985.html

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