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; https://stackoverflow.com/questions/35410421/inno-setup-remove-path-from-path-environment-variable-while-uninstalling-a-pro
[Code]
const
EnvironmentKey = 'SYSTEM\CurrentControlSet\Control\Session Manager\Environment';
procedure RemovePath(Path: string);
var
Paths: string;
P: Integer;
begin
if not RegQueryStringValue(HKEY_LOCAL_MACHINE, EnvironmentKey, 'Path', Paths) then
begin
Log('PATH not found');
end
else
begin
Log(Format('PATH is [%s]', [Paths]));
P := Pos(';' + Uppercase(Path) + ';', ';' + Uppercase(Paths) + ';');
if P = 0 then
begin
Log(Format('Path [%s] not found in PATH', [Path]));
end
else
begin
if P > 1 then P := P - 1;
Delete(Paths, P, Length(Path) + 1);
Log(Format('Path [%s] removed from PATH => [%s]', [Path, Paths]));
if RegWriteStringValue(HKEY_LOCAL_MACHINE, EnvironmentKey, 'Path', Paths) then
begin
Log('PATH written');
end
else
begin
Log('Error writing PATH');
end;
end;
end;
end;
procedure CurUninstallStepChanged(CurUninstallStep: TUninstallStep);
begin
if CurUninstallStep = usUninstall then
begin
RemovePath(ExpandConstant('{app}'));
end;
end;
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