From daae7d4ac20986d9ebda4753769541bd645796bb Mon Sep 17 00:00:00 2001
From: Yuhang Zhao <2546789017@qq.com>
Date: Sun, 29 Mar 2020 21:05:41 +0800
Subject: [PATCH] Update.

Signed-off-by: Yuhang Zhao <2546789017@qq.com>
---
 winnativeeventfilter.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/winnativeeventfilter.cpp b/winnativeeventfilter.cpp
index 3ec31b4..a71fd10 100644
--- a/winnativeeventfilter.cpp
+++ b/winnativeeventfilter.cpp
@@ -433,6 +433,14 @@ UINT WinNativeEventFilter::getDpiForWindow(HWND handle) const {
     }
     // TODO: Is there an elegant way to acquire the system DPI in
     // Win7/8/10(before 1607)?
+    const HDC hdc = GetDC(nullptr);
+    if (hdc) {
+        const int dpiX = GetDeviceCaps(hdc, LOGPIXELSX);
+        const int dpiY = GetDeviceCaps(hdc, LOGPIXELSY);
+        ReleaseDC(nullptr, hdc);
+        // Not necessary, just silence a compiler warning.
+        return dpiX == dpiY ? dpiX : dpiY;
+    }
     return m_defaultDPI;
 }