使用 Inno Setup 安装 mod/plugin 时如何从注册表获取目标游戏/应用程序的安装路径? [英] How to get path of installation of target game/application from registry when installing mod/plugin using Inno Setup?

问题描述

我想为游戏的模组创建安装程序.我需要检测游戏的安装位置.我知道注册表中游戏的路径在哪里.但是游戏可以在另一个启动器中 - Steam，GOG.如何按顺序检测?

I would like to create installer for mod of the game. And I need to detect where is installed the game. I know where is path of the game in registry. But the game can be in another launchers - Steam, GOG. How to detect in order?

例如:

• 如果我有 Steam 版本，需要从 Steam 的注册表中检测安装路径
• 如果我有GOG版本需要从注册表中检测GOG的安装路径
• 如果我有两个版本(Steam 和 GOG)，那么默认安装路径将是 Steam 版本
• 如果我没有任何版本，则用户自己选择目的地

注册表项:

• 蒸汽:

[HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionUninstallSteam App 475150] 
"InstallLocation"="E:\Games\Software\Steam\steamapps\common\Titan Quest Anniversary Edition" 

GOG:

GOG:

[HKEY_LOCAL_MACHINESOFTWAREWOW6432NodeGOG.comGames1196955511] 
"path"="D:\Titan Quest GOG"

我知道如何检测一条路径

I know how detect one path

DefaultDirName={reg:HKLMSOFTWAREMicrosoftWindowsCurrentVersionUninstallSteam App 475150, InstallLocation}

但我不知道如何检测多条路径.

But I don't know how detect many paths.

推荐答案

使用 脚本常量 和RegQueryStringValue 函数:

Use a scripted constant and RegQueryStringValue function:

[Setup]
DefaultDirName={code:GetInstallationPath}

[Code]
var
  InstallationPath: string;

function GetInstallationPath(Param: string): string;
begin
  { Detected path is cached, as this gets called multiple times }
  if InstallationPath = '' then
  begin
    if RegQueryStringValue(
         HKLM64, 'SOFTWAREMicrosoftWindowsCurrentVersionUninstallSteam App 475150',
         'InstallLocation', InstallationPath) then
    begin
      Log('Detected Steam installation: ' + InstallationPath);
    end
      else
    if RegQueryStringValue(
         HKLM32, 'SOFTWAREGOG.comGames1196955511',
         'path', InstallationPath) then
    begin
      Log('Detected GOG installation: ' + InstallationPath);
    end
      else
    begin
      InstallationPath := 'C:yourdefaultpath';
      Log('No installation detected, using the default path: ' + InstallationPath);
    end;
  end;
  Result := InstallationPath;
end;

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