minimal example that only depends on Core API

examples/CMakeLists.txt

@@ -4,6 +4,7 @@ find_package(Qt${QT_VERSION_MAJOR} COMPONENTS Widgets)
 if(TARGET Qt${QT_VERSION_MAJOR}::Widgets)
     add_subdirectory(widget)
     add_subdirectory(mainwindow)
+    add_subdirectory(minimal)
 endif()
 
 if(TARGET Qt${QT_VERSION_MAJOR}::Quick)

examples/minimal/CMakeLists.txt

@@ -0,0 +1,39 @@
+set(CMAKE_INCLUDE_CURRENT_DIR ON)
+
+set(CMAKE_AUTOUIC ON)
+set(CMAKE_AUTOMOC ON)
+set(CMAKE_AUTORCC ON)
+
+find_package(QT NAMES Qt6 Qt5 COMPONENTS Widgets REQUIRED)
+find_package(Qt${QT_VERSION_MAJOR} COMPONENTS Widgets REQUIRED)
+
+set(SOURCES
+    ../images.qrc
+    main.cpp
+    flwindow.h
+    flwindow.cpp
+)
+
+if(WIN32)
+    enable_language(RC)
+    list(APPEND SOURCES ../example.rc ../example.manifest)
+endif()
+
+add_executable(minimal WIN32 ${SOURCES})
+
+target_link_libraries(minimal PRIVATE
+    Qt${QT_VERSION_MAJOR}::Widgets
+    wangwenx190::FramelessHelper
+)
+
+target_compile_definitions(minimal PRIVATE
+    QT_NO_CAST_FROM_ASCII
+    QT_NO_CAST_TO_ASCII
+    QT_NO_KEYWORDS
+    QT_DEPRECATED_WARNINGS
+    QT_DISABLE_DEPRECATED_BEFORE=0x060100
+)
+
+if(WIN32)
+    target_link_libraries(minimal PRIVATE dwmapi)
+endif()

examples/minimal/flwindow.cpp

@@ -0,0 +1,38 @@
+#include "flwindow.h"
+#include "../../framelesshelper.h"
+
+FRAMELESSHELPER_USE_NAMESPACE
+
+FLWindow::FLWindow(QWidget *parent) : QWidget(parent)
+{
+	setWindowFlags(Qt::FramelessWindowHint | Qt::Dialog);
+	setStyleSheet(QString::fromLatin1("background:blue"));
+
+	setAttribute(Qt::WA_ShowModal);
+	resize(500, 500);
+}
+
+FLWindow::~FLWindow()
+{
+
+}
+
+void FLWindow::initFramelessWindow()
+{
+	FramelessHelper* helper = new FramelessHelper(windowHandle());
+	helper->setResizeBorderThickness(8);
+	helper->setTitleBarHeight(20);
+	helper->setResizable(true);
+	helper->install();
+}
+
+void FLWindow::showEvent(QShowEvent *event)
+{
+    QWidget::showEvent(event);
+
+    static bool inited = false;
+    if (!inited) {
+        inited = true;
+		initFramelessWindow();
+    }
+}

examples/minimal/flwindow.h

@@ -0,0 +1,17 @@
+#pragma once
+
+#include <QWidget>
+
+class FLWindow : public QWidget
+{
+	Q_OBJECT
+public:
+	explicit FLWindow(QWidget *parent = nullptr);
+	~FLWindow();
+
+protected:
+	void showEvent(QShowEvent *event) override;
+
+private:
+	void initFramelessWindow();
+};

examples/minimal/main.cpp

@@ -0,0 +1,21 @@
+#include <QtWidgets/qapplication.h>
+#include "flwindow.h"
+
+int main(int argc, char *argv[])
+{
+    QCoreApplication::setAttribute(Qt::AA_DontCreateNativeWidgetSiblings);
+#if (QT_VERSION < QT_VERSION_CHECK(6, 0, 0))
+    QGuiApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
+    QGuiApplication::setAttribute(Qt::AA_UseHighDpiPixmaps);
+#if (QT_VERSION >= QT_VERSION_CHECK(5, 14, 0))
+    QGuiApplication::setHighDpiScaleFactorRoundingPolicy(Qt::HighDpiScaleFactorRoundingPolicy::PassThrough);
+#endif
+#endif
+
+    QApplication application(argc, argv);
+
+    FLWindow win;
+    win.show();
+
+    return QApplication::exec();
+}

framelesshelper.cpp

@@ -222,8 +222,11 @@ void FramelessHelper::unsetCursor()
 
 void FramelessHelper::updateCursor()
 {
-    if (isHoverResizeHandler())
+    if (isHoverResizeHandler()) {
         setCursor(cursorForFrameSection(m_hoveredFrameSection));
+    } else {
+        unsetCursor();
+    }
 }
 
 void FramelessHelper::updateMouse(const QPoint& pos)
@@ -239,6 +242,8 @@ void FramelessHelper::updateHoverStates(const QPoint& pos)
 
 bool FramelessHelper::eventFilter(QObject *object, QEvent *event)
 {
+    bool filterOut = false;
+
     if (object == m_window) {
         switch (event->type())
         {
@@ -266,6 +271,8 @@ bool FramelessHelper::eventFilter(QObject *object, QEvent *event)
             break;
         }
     }
+
+    return filterOut;
 }
 
 FRAMELESSHELPER_END_NAMESPACE

framelesshelper.h

@@ -29,6 +29,7 @@
 #if (QT_VERSION >= QT_VERSION_CHECK(5, 15, 0))
 
 #include <QtCore/qobject.h>
+#include <QtCore/qsize.h>
 
 QT_BEGIN_NAMESPACE
 QT_FORWARD_DECLARE_CLASS(QWindow)

framelesswindowsmanager.cpp

@@ -38,7 +38,7 @@
 FRAMELESSHELPER_BEGIN_NAMESPACE
 
 #ifdef FRAMELESSHELPER_USE_UNIX_VERSION
-Q_GLOBAL_STATIC(FramelessHelper, framelessHelperUnix)
+//Q_GLOBAL_STATIC(FramelessHelper, framelessHelperUnix)
 #endif
 
 void FramelessWindowsManager::addWindow(QWindow *window)
@@ -51,7 +51,7 @@ void FramelessWindowsManager::addWindow(QWindow *window)
         QCoreApplication::setAttribute(Qt::AA_DontCreateNativeWidgetSiblings);
     }
 #ifdef FRAMELESSHELPER_USE_UNIX_VERSION
-    framelessHelperUnix()->removeWindowFrame(window);
+    //framelessHelperUnix()->removeWindowFrame(window);
 #else
     FramelessHelperWin::addFramelessWindow(window);
     // Work-around a Win32 multi-monitor bug.
@@ -165,7 +165,7 @@ void FramelessWindowsManager::removeWindow(QWindow *window)
         return;
     }
 #ifdef FRAMELESSHELPER_USE_UNIX_VERSION
-    framelessHelperUnix()->bringBackWindowFrame(window);
+    //framelessHelperUnix()->bringBackWindowFrame(window);
 #else
     FramelessHelperWin::removeFramelessWindow(window);
 #endif