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Fix installation path detection via registry in update installer

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This commit is contained in:
chylex 2017-03-10 16:00:00 +01:00
parent 00acc677e6
commit fadd95f3e6
1 changed files with 9 additions and 3 deletions

12
bld/gen_upd.iss
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@ -166,14 +166,20 @@ end;
{ Returns a validated installation path (including trailing backslash) using the /UPDATEPATH parameter or installation info in registry. Returns empty string on failure. }
function TDFindUpdatePath: String;
var Path: String;
var RegistryKey: String;
begin
Path := ExpandConstant('{param:UPDATEPATH}')
if (Path = '') and not IsPortable and not RegQueryStringValue(HKEY_LOCAL_MACHINE, 'Software\Microsoft\Windows\CurrentVersion\Uninstall\{{#MyAppID}}_is1', 'InstallLocation', Path) then
if (Path = '') and not IsPortable then
begin
Result := ''
Exit
RegistryKey := 'Software\Microsoft\Windows\CurrentVersion\Uninstall\{{#MyAppID}}_is1'
if not (RegQueryStringValue(HKEY_CURRENT_USER, RegistryKey, 'InstallLocation', Path) or RegQueryStringValue(HKEY_LOCAL_MACHINE, RegistryKey, 'InstallLocation', Path)) then
begin
Result := ''
Exit
end;
end;
if not FileExists(Path+'{#MyAppExeName}') then