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> Unreal Engine API Reference > Runtime > Core > Misc > FApp > FApp::IsInstalled

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FApp::IsInstalled

Checks whether this application has been installed.

Windows

MacOS

Linux

References

Module	Core
Header	/Engine/Source/Runtime/Core/Public/Misc/App.h
Include	#include "Misc/App.h"
Source	/Engine/Source/Runtime/Core/Private/Misc/App.cpp

Syntax

static bool IsInstalled()

Remarks

Checks whether this application has been installed.

Non-server desktop shipping builds are assumed to be installed.

Installed applications may not write to the folder in which they exist since they are likely in a system folder (like "Program Files" in windows). Instead, they should write to the OS-specific user folder FPlatformProcess::UserDir() or application data folder FPlatformProcess::ApplicationSettingsDir() User Access Control info for windows Vista and newer: http://en.wikipedia.org/wiki/User_Account_Control

To run an "installed" build without installing, use the -Installed command line parameter. To run a "non-installed" desktop shipping build, use the -NotInstalled command line parameter.

Returns

true if the application is installed, false otherwise.

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