From 4947f735fbf035febbd8435c32a50d37af2633cb Mon Sep 17 00:00:00 2001
From: Bent Bisballe Nyeng <deva@aasimon.org>
Date: Sun, 31 Mar 2024 19:27:56 +0200
Subject: Add isHiDPI function to NativeWindow and it's implementations.

---
 dggui/nativewindow_win32.cc | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'dggui/nativewindow_win32.cc')

diff --git a/dggui/nativewindow_win32.cc b/dggui/nativewindow_win32.cc
index db785e9..45cbd30 100644
--- a/dggui/nativewindow_win32.cc
+++ b/dggui/nativewindow_win32.cc
@@ -489,6 +489,15 @@ std::pair<std::size_t, std::size_t> NativeWindowWin32::getSize() const
 	return std::make_pair(rect.right - rect.left, rect.bottom - rect.top);
 }
 
+bool NativeWindowWin32::isHiDPI()
+{
+	HDC hDC = GetDC(m_hwnd);
+	INT xres = GetDeviceCaps(hDC, LOGPIXELSX);
+	INT yres = GetDeviceCaps(hDC, LOGPIXELSY);
+	ReleaseDC(m_hwnd, hDC);
+	return xres >= 2 * 96 || yres >= 2 * 96;
+}
+
 void NativeWindowWin32::move(int x, int y)
 {
 	SetWindowPos(m_hwnd, always_on_top ? HWND_TOPMOST : nullptr,
-- 
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