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http://www.jrsoftware.org/ispphelp/index.php?topic=funcs
Inno Setup Preprocessor: Functions. There are a number of predefined functions provided by ISPP which you can use to perform compile-time actions and/or change your script. For example the following reads version info from an EXE and uses the return value of the function to change the script: #define MyAppVer GetFileVersion(AddBackslash(SourcePath)...
https://jrsoftware.github.io/issrc/whatsnew.htm
Inno Setup's own installer script now supports both administrative and non administrative install mode and allows the dialog override. Side-by-side installations Support …
https://documentation.help/Inno-Setup/topic_scriptevents.htm
If Setup finds the CheckPassword event function in the Pascal script, it automatically displays the Password page and calls CheckPassword to check passwords. Return True to accept the password and False to reject it. To avoid storing the actual password inside the compiled [Code] section which is stored inside Setup…
https://www.howtobuildsoftware.com/index.php/how-do/crYy/inno-setup-pascalscript-how-to-override-functions-in-inno-setup
In Pascal (including a Pascal Script used in Inno Setup), you can define a function prototype (aka forward declaration) using a forward keyword: procedure ProcA; forward; procedure ProcB; begin ProcA; end; procedure ProcA; begin // some code end; See Forward declared functions....
https://stackoverflow.com/questions/22710322/does-innosetup-support-the-expandconstant-function-in-included-files
The following function used to work well when defined in the main setup script file: function PrevInstallExists: Boolean; var Value: string; UninstallKey: string; begin UninstallKey := …
https://www.howtobuildsoftware.com/index.php/how-do/yVB/installer-inno-setup-inno-setup-writing-a-multi-line-text-constant-to-the-registry
(Elaborating on @TLama's comment) The DisableProgramGroupPage does not support "boolean expression": [Setup]: DisableProgramGroupPage Valid values: auto, yes, or no Contrary to Uninstallable: [Setup]: Uninstallable Valid values: yes or no, or a boolean expression You can use ShouldSkipPage event function instead: function ShouldSkipPage(PageID: Integer): Boolean; begin Result := False; …
https://documentation.help/Inno-Setup/topic_setup_appvername.htm
This directive specifies the name of the application plus its version number. The value of this directive is displayed on the Welcome page of Setup's wizard, and is used as the default title of the application's Add/Remove Programs entry (see UninstallDisplayName).The value may include constants.
https://stackoverflow.com/questions/15335340/inno-setup-working-with-json
Inno doesn't have any native JSON support, but you can parse and modify it as a normal string before writing it out again. If a regexp module is the easiest way for you then so be it. If you just want to search and replace a known-unique marker, then use the StringChange or StringChangeEx function.
http://www.jrsoftware.org/ishelp/topic_scriptfunctions.htm
Here's the list of support functions that can be called from within the Pascal script. Setup or Uninstall Info functions. function GetCmdTail: String; function ParamCount: Integer; function ParamStr(Index: Integer): String; function ActiveLanguage: String; function …
https://documentation.help/Inno-Setup/topic_32vs64bitinstalls.htm
Inno Setup Documentation Install Mode: 32-bit vs. 64-bit Inno Setup. previous page next page. ... The Reg* [Code] support functions access the 32-bit view by default. The useapppaths flag of the [Icons] section reads the "App Paths" key in the 32-bit view of the registry.
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