Inno setup-如果未安装其他程序，请跳过安装 [英] Inno setup - skip installation if other program is not installed

问题描述

如果未安装其他程序，我必须找到如何跳过安装的方法.我可以检测到其他程序的注册表(基本脚本返回true/false)，这不是问题.但是我不知道如何跳过安装.

I have to find way how to skip installation if other program is not installed. I can detect registry of other program (basic script returns true/false), it is not problem. But I don't know how to skip installation.

简而言之:如果未设置注册表中的一个键，则打印消息在此之前安装instal程序xyz"并完成安装程序.

In short: if one key in registry is not set, print message 'instal program xyz before this one' and finish installator.

推荐答案

这非常容易.只需添加

[Code]

function IsApp2Installed: boolean;
begin
  result := RegKeyExists(HKEY_LOCAL_MACHINE,
    'SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\app2.exe');
end;

function InitializeSetup: boolean;
begin
  result := IsApp2Installed;
  if not result then
    MsgBox('You need to install App2 before you install ThisApp. Install App2 and then run this installer again.', mbError, MB_OK);
end;

到您的ISS文件. InitializeSetup是所谓的事件函数，它在安装程序启动时执行(甚至在显示向导GUI之前).如果返回false，安装程序将立即退出.

to your ISS file. InitializeSetup is a so-called event function that is executed when the installer starts (even before the wizard GUI is shown). If you return false, the installer will exit immediately.

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