windows - 如何使用 Inno Setup 确定是否安装了特定的 Windows 更新包 (KB*.msu)？

Question

我想知道如何确定目标计算机中是否安装了特定的 Windows 更新包，例如名称为 KB2919355 的 Windows 更新包.

是否有内置功能来检查？如果不是，确定它所需的代码是什么？可能会弄乱注册表，或者可能是最干净和/或安全的方式？

伪代码:

[Setup]
...

[Files]
Source: {app}\*; DestDir: {app}; Check: IsPackageInstalled('KB2919355')

[Code]
function IsPackageInstalled(packageName): Boolean;
  begin
    ...
    Result := ...;
  end;

Answer 1

function IsKBInstalled(KB: string): Boolean;
var
  WbemLocator: Variant;
  WbemServices: Variant;
  WQLQuery: string;
  WbemObjectSet: Variant;
begin
  WbemLocator := CreateOleObject('WbemScripting.SWbemLocator');
  WbemServices := WbemLocator.ConnectServer('', 'root\CIMV2');

  WQLQuery := 'select * from Win32_QuickFixEngineering where HotFixID = ''' + KB + '''';

  WbemObjectSet := WbemServices.ExecQuery(WQLQuery);
  Result := (not VarIsNull(WbemObjectSet)) and (WbemObjectSet.Count > 0);
end;

像这样使用:

if IsKBInstalled('KB2919355') then
begin
  Log('KB2919355 is installed');
end
  else 
begin
  Log('KB2919355 is not installed');
end;

---

学分:

• 更新的 WMI 查询:
  How can I query my system via command line to see if a KB patch is installed?
• 从 Inno Setup 使用 WMI:
  @TLama's answer至 Inno Setup Pascal Script to search for running process .