From 9f5c437a12b90088e61bd88f91b4430dab036a7c Mon Sep 17 00:00:00 2001
From: YuutaW <17158086+Trumeet@users.noreply.github.com>
Date: Sun, 30 Jun 2019 18:21:34 -0700
Subject: feat: add an error notification if the window was failed in creating

Signed-off-by: Trumeet <17158086+Trumeet@users.noreply.github.com>
---
 src/mingwMain/kotlin/moe/yuuta/aero/Aero.kt | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/mingwMain/kotlin/moe/yuuta/aero/Aero.kt b/src/mingwMain/kotlin/moe/yuuta/aero/Aero.kt
index c1f76de..f1040ff 100644
--- a/src/mingwMain/kotlin/moe/yuuta/aero/Aero.kt
+++ b/src/mingwMain/kotlin/moe/yuuta/aero/Aero.kt
@@ -44,6 +44,12 @@ fun main() {
     }
 
     if (hwnd == null || (forceDialogEnv == "true")) {
+        if (hwnd == null) {
+            MessageBoxA(null,
+                "The system returns an empty dialog (${GetLastError()})",
+                "Aero",
+                (MB_OK or MB_ICONERROR).convert())
+        }
         memScoped {
             // Fallback
             val dlgImpl = cValue<DLGTEMPLATE> {
-- 
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