Inno Setup ist ein Programm um MSI Installer zu generieren.

; Script generated by the Inno Setup Script Wizard.
; SEE THE DOCUMENTATION FOR DETAILS ON CREATING INNO SETUP SCRIPT FILES!

#define MyAppName "StackShell"
#define MyAppVersion "0.1"
#define MyAppExeName "StackShell.exe"

[Setup]
; NOTE: The value of AppId uniquely identifies this application. Do not use the same AppId value in installers for other applications.
; (To generate a new GUID, click Tools | Generate GUID inside the IDE.)
AppId={{BA309C82-74E1-492C-86AD-1A5CB94541F8}
AppName={#MyAppName}
AppVersion={#MyAppVersion}
;AppVerName={#MyAppName} {#MyAppVersion}
DefaultDirName={autopf}\{#MyAppName}
DefaultGroupName={#MyAppName}
AllowNoIcons=yes
; Uncomment the following line to run in non administrative install mode (install for current user only.)
;PrivilegesRequired=lowest
PrivilegesRequiredOverridesAllowed=dialog
OutputBaseFilename=mysetup
Compression=lzma
SolidCompression=yes
WizardStyle=modern
ChangesEnvironment=true

[Languages]
Name: "german"; MessagesFile: "compiler:Languages\German.isl"

[Tasks]
; Fragt den User "Soll ein Desktop Icon erstellt werden?"
Name: "desktopicon"; Description: "{cm:CreateDesktopIcon}"; GroupDescription: "{cm:AdditionalIcons}"; Flags: unchecked
; Fragt den User "Soll das Programm in die PATH Variable eingetragen werden?"
Name: envPath; Description: "PATH variable automatisch setzen" 

; Dateien, Konfigurationen etc. kopieren (mit entsprechenden Berechtigungen)
[Files]
Source: "C:\Users\manuel\source\repos\StackShell\StackShell\bin\Release\net6.0\publish\win-x86\{#MyAppExeName}"; DestDir: "{app}"; Flags: ignoreversion
Source: "C:\Users\manuel\source\repos\StackShell\StackShell\bin\Release\net6.0\publish\win-x86\Math.dll"; DestDir: "{app}"; Flags: ignoreversion
Source: "C:\Users\manuel\source\repos\StackShell\StackShell\bin\Release\net6.0\publish\win-x86\Std.dll"; DestDir: "{app}"; Flags: ignoreversion
; NOTE: Don't use "Flags: ignoreversion" on any shared system files

[Dirs]
; Name: {app}\plugins

[Icons]
Name: "{group}\{#MyAppName}"; Filename: "{app}\{#MyAppExeName}"
Name: "{autodesktop}\{#MyAppName}"; Filename: "{app}\{#MyAppExeName}"; Tasks: desktopicon

; Setze ENV Variablen
[Code]
const EnvironmentKey = 'SYSTEM\CurrentControlSet\Control\Session Manager\Environment';

; Funktionen in INNO, yummy
procedure EnvAddPath(Path: string);
var
    Paths: string;
begin
    { Retrieve current path (use empty string if entry not exists) }
    if not RegQueryStringValue(HKEY_LOCAL_MACHINE, EnvironmentKey, 'Path', Paths)
    then Paths := '';

    { Skip if string already found in path }
    if Pos(';' + Uppercase(Path) + ';', ';' + Uppercase(Paths) + ';') > 0 then exit;

    { App string to the end of the path variable }
    Paths := Paths + ';'+ Path +';'

    { Overwrite (or create if missing) path environment variable }
    if RegWriteStringValue(HKEY_LOCAL_MACHINE, EnvironmentKey, 'Path', Paths)
    then Log(Format('The [%s] added to PATH: [%s]', [Path, Paths]))
    else Log(Format('Error while adding the [%s] to PATH: [%s]', [Path, Paths]));
end;

procedure EnvRemovePath(Path: string);
var
    Paths: string;
    P: Integer;
begin
    { Skip if registry entry not exists }
    if not RegQueryStringValue(HKEY_LOCAL_MACHINE, EnvironmentKey, 'Path', Paths) then
        exit;

    { Skip if string not found in path }
    P := Pos(';' + Uppercase(Path) + ';', ';' + Uppercase(Paths) + ';');
    if P = 0 then exit;

    { Update path variable }
    Delete(Paths, P - 1, Length(Path) + 1);

    { Overwrite path environment variable }
    if RegWriteStringValue(HKEY_LOCAL_MACHINE, EnvironmentKey, 'Path', Paths)
    then Log(Format('The [%s] removed from PATH: [%s]', [Path, Paths]))
    else Log(Format('Error while removing the [%s] from PATH: [%s]', [Path, Paths]));
end;

procedure CurStepChanged(CurStep: TSetupStep);
begin
    if CurStep = ssPostInstall 
     then EnvAddPath(ExpandConstant('{app}'));
end;

procedure CurUninstallStepChanged(CurUninstallStep: TUninstallStep);
begin
    if CurUninstallStep = usPostUninstall
    then EnvRemovePath(ExpandConstant('{app}'));
end;

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