Enable dark window border on Windows

QtScrcpy/CMakeLists.txt

@@ -149,6 +149,8 @@ if(CMAKE_SYSTEM_NAME STREQUAL "Windows")
     set(QC_UTIL_SOURCES ${QC_UTIL_SOURCES} 
         util/mousetap/winmousetap.h
         util/mousetap/winmousetap.cpp
+        util/winutils.h
+        util/winutils.cpp
     )
 endif()
 if(CMAKE_SYSTEM_NAME STREQUAL "Linux")

QtScrcpy/ui/dialog.cpp

@@ -11,6 +11,10 @@
 #include "videoform.h"
 #include "../groupcontroller/groupcontroller.h"
 
+#ifdef Q_OS_WIN32
+#include "../util/winutils.h"
+#endif
+
 QString s_keyMapPath = "";
 
 const QString &getKeyMapPath()
@@ -137,6 +141,10 @@ void Dialog::initUI()
 
     setWindowTitle(Config::getInstance().getTitle());
 
+#ifdef Q_OS_WIN32
+    WinUtils::setDarkBorderToWindow((HWND)this->winId(), true);
+#endif
+
     ui->bitRateEdit->setValidator(new QIntValidator(1, 99999, this));
 
     ui->maxSizeBox->addItem("640");

QtScrcpy/util/winutils.cpp

@@ -0,0 +1,28 @@
+#include <QDebug>
+#include <Windows.h>
+#include <dwmapi.h>
+#pragma comment(lib, "dwmapi")
+
+#include "winutils.h"
+
+enum : WORD
+{
+    DwmwaUseImmersiveDarkMode = 20,
+    DwmwaUseImmersiveDarkModeBefore20h1 = 19
+};
+
+WinUtils::WinUtils(){};
+
+WinUtils::~WinUtils(){};
+
+// Set dark border to window
+// Reference: qt/qtbase.git/tree/src/plugins/platforms/windows/qwindowswindow.cpp
+bool WinUtils::setDarkBorderToWindow(const HWND &hwnd, const bool &d)
+{
+    const BOOL darkBorder = d ? TRUE : FALSE;
+    const bool ok = SUCCEEDED(DwmSetWindowAttribute(hwnd, DwmwaUseImmersiveDarkMode, &darkBorder, sizeof(darkBorder)))
+                    || SUCCEEDED(DwmSetWindowAttribute(hwnd, DwmwaUseImmersiveDarkModeBefore20h1, &darkBorder, sizeof(darkBorder)));
+    if (!ok)
+        qWarning("%s: Unable to set dark window border.", __FUNCTION__);
+    return ok;
+}

QtScrcpy/util/winutils.h

@@ -0,0 +1,16 @@
+#ifndef WINUTILS_H
+#define WINUTILS_H
+
+#include <QApplication>
+#include <Windows.h>
+
+class WinUtils
+{
+public:
+    WinUtils();
+    ~WinUtils();
+
+    static bool setDarkBorderToWindow(const HWND &hwnd, const bool &d);
+};
+
+#endif // WINUTILS_H