function GetVersion(sFile: string; bIncludeBuild: boolean): string;

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#string #function #build #variables #numbers

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博客展示了一个名为GetVersion的函数，用于获取文件的版本信息。函数接收文件路径和是否包含构建号的布尔值作为参数，通过一系列操作读取版本信息大小、检索版本信息，最终根据条件格式化输出文件的版本号。

function GetVersion(sFile: string; bIncludeBuild: boolean): string;
var
dwfvw, dwZero, dwvsf: DWORD;
Major, Minor, Release, Build: DWord;
pfvw: PChar;
pvsf: PVSFixedFileInfo;
s: string;
begin
Result := '';
// attempt to read version info size
dwfvw := GetFileVersionInfoSize(PChar(sFile), dwZero); // exit on error
if dwfvw <> 0 then begin
    GetMem(pfvw, dwfvw);
    try // exit if unable to retrieve version info
      if (GetFileVersionInfo(PChar(sFile), dwZero, dwfvw, pfvw)) then begin // get the build value
        if (VerQueryValue(pfvw, '/', Pointer(pvsf), dwvsf)) then begin
          if ((pvsf^.dwFileFlags and VS_FF_PRERELEASE) > 0) then begin
            s := 'beta; '
          end
          else begin
            s := '';
          end;
          // For clarity store in temporary variables
          Major := HIWORD(pvsf^.dwFileVersionMS);
          Minor := LOWORD(pvsf^.dwFileVersionMS);
          Release := HIWORD(pvsf^.dwFileVersionLS);
          Build := LOWORD(pvsf^.dwFileVersionLS);
          // Always show full Build Numbers from now GN.. 2/9/03
          Result := Format('Version %d.%d.%d Build %d', [Major, Minor, Release,
            Build]);
          if bIncludeBuild then begin
            if Release > 0 then begin
              Result := Format('Version %d.%d.%d Build %d', [Major, Minor,
              Release, Build])
            end
            else begin
              Result := Format('Version %d.%d Build %d', [Major, Minor, Build])
            end;
          end
          else begin
            if Release > 0 then begin
              Result := Format('Version %d.%d.%d', [Major, Minor, Release])
            end
            else begin
              Result := Format('Version %d.%d', [Major, Minor])
            end;
          end;
        end;
      end;
    finally
      FreeMem(pfvw);
    end;
end;
end;