feat, win10, virtual display, not support message

Signed-off-by: fufesou <shuanglongchen@yeah.ne>

src/privacy_mode/win_virtual_display.rs

@@ -357,6 +357,10 @@ impl PrivacyMode for PrivacyModeImpl {
     }
 
     fn turn_on_privacy(&mut self, conn_id: i32) -> ResultType<bool> {
+        if !virtual_display_manager::is_virtual_display_supported() {
+            bail!("idd_not_support_tip");
+        }
+
         if self.check_on_conn_id(conn_id)? {
             log::debug!("Privacy mode of conn {} is already on", conn_id);
             return Ok(true);