Support for file not found in ConfigFile::Load and handle a few specific cases

EditorSettings::set_project_metadata: creates project_metadata.cfg if it doesn't exist
EditorPlugin::get_config: removed (not used)

Fixes #31444

1 files changed, 10 insertions, 3 deletions

diff --git a/drivers/windows/file_access_windows.cpp b/drivers/windows/file_access_windows.cpp
index c12a2d75a8..7db847d6ed 100644
--- a/drivers/windows/file_access_windows.cpp
+++ b/drivers/windows/file_access_windows.cpp
@@ -114,11 +114,18 @@ Error FileAccessWindows::_open(const String &p_path, int p_mode_flags) {
 		path = path + ".tmp";
 	}
 
-	_wfopen_s(&f, path.c_str(), mode_string);
+	errno_t errcode = _wfopen_s(&f, path.c_str(), mode_string);
 
 	if (f == NULL) {
-		last_error = ERR_FILE_CANT_OPEN;
-		return ERR_FILE_CANT_OPEN;
+		switch (errcode) {
+			case ENOENT: {
+				last_error = ERR_FILE_NOT_FOUND;
+			} break;
+			default: {
+				last_error = ERR_FILE_CANT_OPEN;
+			} break;
+		}
+		return last_error;
 	} else {
 		last_error = OK;
 		flags = p_mode_flags;