From 7b72810801236cc0c25d0d515d2039db071c95bd Mon Sep 17 00:00:00 2001
From: Friedemann Kleint <Friedemann.Kleint@qt.io>
Date: Mon, 12 Feb 2018 11:18:48 +0100
Subject: QWindowsNativeImage: Output parameters when CreateDIBSection() fails

This helps to identify bugs in the backing store.

Change-Id: Ib15946c8dbdc6f0a5bebe9ca9e6fea5668eb499b
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>
---
 src/platformsupport/fontdatabases/windows/qwindowsnativeimage.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

(limited to 'src/platformsupport/fontdatabases/windows/qwindowsnativeimage.cpp')

diff --git a/src/platformsupport/fontdatabases/windows/qwindowsnativeimage.cpp b/src/platformsupport/fontdatabases/windows/qwindowsnativeimage.cpp
index 67a6619b91..b1133dca22 100644
--- a/src/platformsupport/fontdatabases/windows/qwindowsnativeimage.cpp
+++ b/src/platformsupport/fontdatabases/windows/qwindowsnativeimage.cpp
@@ -101,8 +101,10 @@ static inline HBITMAP createDIB(HDC hdc, int width, int height,
     uchar *bits = nullptr;
     HBITMAP bitmap = CreateDIBSection(hdc, reinterpret_cast<BITMAPINFO *>(&bmi),
                                       DIB_RGB_COLORS, reinterpret_cast<void **>(&bits), 0, 0);
-    if (Q_UNLIKELY(!bitmap || !bits))
-        qFatal("%s: CreateDIBSection failed.", __FUNCTION__);
+    if (Q_UNLIKELY(!bitmap || !bits)) {
+        qFatal("%s: CreateDIBSection failed (%dx%d, format: %d)", __FUNCTION__,
+               width, height, int(format));
+    }
 
     *bitsIn = bits;
     return bitmap;
-- 
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