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Let Ubisoft Connect find Steam #61

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Merged
NotProtonNot merged 1 commit into from
Oct 8, 2026
Merged

Let Ubisoft Connect find Steam #61

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17 changes: 17 additions & 0 deletions steam-shim/steam.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -119,6 +119,22 @@ static void set_client_dll_paths(void)
"SteamPath", REG_SZ, steam_dir, (DWORD)sizeof(steam_dir));
}

/* Values Proton's wine.inf sets. Ubisoft Connect needs them to see Steam. */
static void set_install_paths(void)
{
static const char install_dir[] = "C:\\Program Files (x86)\\Steam";
static const char steam_exe[] = "C:\\Program Files (x86)\\Steam\\steam.exe";

RegSetKeyValueA(HKEY_LOCAL_MACHINE, "Software\\Wow6432Node\\Valve\\Steam",
"InstallPath", REG_SZ, install_dir, (DWORD)sizeof(install_dir));
RegSetKeyValueA(HKEY_LOCAL_MACHINE, "Software\\Valve\\Steam",
"InstallPath", REG_SZ, install_dir, (DWORD)sizeof(install_dir));
RegSetKeyValueA(HKEY_CURRENT_USER, "Software\\Valve\\Steam",
"SteamExe", REG_SZ, steam_exe, (DWORD)sizeof(steam_exe));
RegSetKeyValueA(HKEY_CURRENT_USER, "Software\\Valve\\Steam\\ActiveProcess",
"SteamPath", REG_SZ, install_dir, (DWORD)sizeof(install_dir));
}

static DWORD WINAPI create_steam_window(void *arg)
{
static WNDCLASSEXW wndclass = { sizeof(WNDCLASSEXW) };
Expand Down Expand Up @@ -1795,6 +1811,7 @@ int main(int argc, char *argv[])

set_active_process_pid();
set_client_dll_paths();
set_install_paths();

if (steam_client_init())
{
Expand Down
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