win: system menu: allow user remove menu items

FramelessHelperConfig.cmake.in

@@ -40,6 +40,7 @@ foreach(_component ${@PROJECT_NAME@_FIND_COMPONENTS})
             if(EXISTS "${__targets_file}")
                 include("${__targets_file}")
                 add_library(${__target} ALIAS @PROJECT_NAME@::${__target_full})
+                list(APPEND _@PROJECT_NAME@_available_components ${_component})
             else()
                 set(@PROJECT_NAME@_FOUND FALSE)
                 set(@PROJECT_NAME@_NOT_FOUND_MESSAGE "Can't find necessary configuration file for ${__target}, please make sure this component is built successfully and installed properly.")

examples/dialog/dialog.cpp

@@ -13,6 +13,7 @@
 #include <FramelessHelper/Widgets/standardtitlebar.h>
 #include <FramelessHelper/Widgets/framelesswidgetshelper.h>
 #include <FramelessHelper/Widgets/standardsystembutton.h>
+#include <FramelessHelper/Widgets/private/framelesswidgetshelper_p.h>
 #include "../shared/settings.h"
 
 extern template void Settings::set<QRect>(const QString &, const QString &, const QRect &);
@@ -134,6 +135,14 @@ void Dialog::setupUi()
 #if FRAMELESSHELPER_CONFIG(titlebar)
     FramelessWidgetsHelper *helper = FramelessWidgetsHelper::get(this);
     helper->setTitleBarWidget(titleBar);
+#  ifdef Q_OS_WINDOWS
+    FramelessWidgetsHelperPrivate *helperPriv = FramelessWidgetsHelperPrivate::get(helper);
+    helperPriv->setProperty(kSysMenuRemoveRestoreVar, true);
+    helperPriv->setProperty(kSysMenuRemoveSizeVar, true);
+    helperPriv->setProperty(kSysMenuRemoveMinimizeVar, true);
+    helperPriv->setProperty(kSysMenuRemoveMaximizeVar, true);
+    helperPriv->setProperty(kSysMenuRemoveSeparatorVar, true);
+#  endif
 #  if (!defined(Q_OS_MACOS) && FRAMELESSHELPER_CONFIG(system_button))
     helper->setSystemButton(titleBar->minimizeButton(), SystemButtonType::Minimize);
     helper->setSystemButton(titleBar->maximizeButton(), SystemButtonType::Maximize);

include/FramelessHelper/Core/framelesshelpercore_global.h

@@ -395,9 +395,19 @@ Q_NAMESPACE_EXPORT(FRAMELESSHELPER_CORE_API)
 
 [[maybe_unused]] inline constexpr const char kDontOverrideCursorVar[] = "FRAMELESSHELPER_DONT_OVERRIDE_CURSOR";
 [[maybe_unused]] inline constexpr const char kDontToggleMaximizeVar[] = "FRAMELESSHELPER_DONT_TOGGLE_MAXIMIZE";
+[[maybe_unused]] inline constexpr const char kSysMenuDisableMoveVar[] = "FRAMELESSHELPER_SYSTEM_MENU_DISABLE_MOVE";
+[[maybe_unused]] inline constexpr const char kSysMenuDisableSizeVar[] = "FRAMELESSHELPER_SYSTEM_MENU_DISABLE_SIZE";
 [[maybe_unused]] inline constexpr const char kSysMenuDisableMinimizeVar[] = "FRAMELESSHELPER_SYSTEM_MENU_DISABLE_MINIMIZE";
 [[maybe_unused]] inline constexpr const char kSysMenuDisableMaximizeVar[] = "FRAMELESSHELPER_SYSTEM_MENU_DISABLE_MAXIMIZE";
 [[maybe_unused]] inline constexpr const char kSysMenuDisableRestoreVar[] = "FRAMELESSHELPER_SYSTEM_MENU_DISABLE_RESTORE";
+[[maybe_unused]] inline constexpr const char kSysMenuDisableCloseVar[] = "FRAMELESSHELPER_SYSTEM_MENU_DISABLE_CLOSE";
+[[maybe_unused]] inline constexpr const char kSysMenuRemoveMoveVar[] = "FRAMELESSHELPER_SYSTEM_MENU_REMOVE_MOVE";
+[[maybe_unused]] inline constexpr const char kSysMenuRemoveSizeVar[] = "FRAMELESSHELPER_SYSTEM_MENU_REMOVE_SIZE";
+[[maybe_unused]] inline constexpr const char kSysMenuRemoveMinimizeVar[] = "FRAMELESSHELPER_SYSTEM_MENU_REMOVE_MINIMIZE";
+[[maybe_unused]] inline constexpr const char kSysMenuRemoveMaximizeVar[] = "FRAMELESSHELPER_SYSTEM_MENU_REMOVE_MAXIMIZE";
+[[maybe_unused]] inline constexpr const char kSysMenuRemoveRestoreVar[] = "FRAMELESSHELPER_SYSTEM_MENU_REMOVE_RESTORE";
+[[maybe_unused]] inline constexpr const char kSysMenuRemoveSeparatorVar[] = "FRAMELESSHELPER_SYSTEM_MENU_REMOVE_SEPARATOR";
+[[maybe_unused]] inline constexpr const char kSysMenuRemoveCloseVar[] = "FRAMELESSHELPER_SYSTEM_MENU_REMOVE_CLOSE";
 
 enum class Option : quint8
 {

src/core/utils_win.cpp

@@ -135,6 +135,9 @@ FRAMELESSHELPER_STRING_CONSTANT(EnableMenuItem)
 FRAMELESSHELPER_STRING_CONSTANT(SetMenuDefaultItem)
 FRAMELESSHELPER_STRING_CONSTANT(HiliteMenuItem)
 FRAMELESSHELPER_STRING_CONSTANT(TrackPopupMenu)
+FRAMELESSHELPER_STRING_CONSTANT(DrawMenuBar)
+FRAMELESSHELPER_STRING_CONSTANT(DeleteMenu)
+FRAMELESSHELPER_STRING_CONSTANT(RemoveMenu)
 FRAMELESSHELPER_STRING_CONSTANT(ClientToScreen)
 FRAMELESSHELPER_STRING_CONSTANT(DwmEnableBlurBehindWindow)
 FRAMELESSHELPER_STRING_CONSTANT(SetWindowCompositionAttribute)
@@ -1315,11 +1318,45 @@ bool Utils::showSystemMenu(const WId windowId, const QPoint &pos, const bool sel
     }
 
     // Tweak the menu items according to the current window status and user settings.
+    const bool disableClose = data->callbacks->getProperty(kSysMenuDisableCloseVar, false).toBool();
     const bool disableRestore = data->callbacks->getProperty(kSysMenuDisableRestoreVar, false).toBool();
     const bool disableMinimize = data->callbacks->getProperty(kSysMenuDisableMinimizeVar, false).toBool();
     const bool disableMaximize = data->callbacks->getProperty(kSysMenuDisableMaximizeVar, false).toBool();
+    const bool disableSize = data->callbacks->getProperty(kSysMenuDisableSizeVar, false).toBool();
+    const bool disableMove = data->callbacks->getProperty(kSysMenuDisableMoveVar, false).toBool();
+    const bool removeClose = data->callbacks->getProperty(kSysMenuRemoveCloseVar, false).toBool();
+    const bool removeSeparator = data->callbacks->getProperty(kSysMenuRemoveSeparatorVar, false).toBool();
+    const bool removeRestore = data->callbacks->getProperty(kSysMenuRemoveRestoreVar, false).toBool();
+    const bool removeMinimize = data->callbacks->getProperty(kSysMenuRemoveMinimizeVar, false).toBool();
+    const bool removeMaximize = data->callbacks->getProperty(kSysMenuRemoveMaximizeVar, false).toBool();
+    const bool removeSize = data->callbacks->getProperty(kSysMenuRemoveSizeVar, false).toBool();
+    const bool removeMove = data->callbacks->getProperty(kSysMenuRemoveMoveVar, false).toBool();
     const bool maxOrFull = (IsMaximized(hWnd) || isFullScreen(windowId));
     const bool fixedSize = data->callbacks->isWindowFixedSize();
+    if (removeClose) {
+        if (::DeleteMenu(hMenu, SC_CLOSE, MF_BYCOMMAND) == FALSE) {
+            //WARNING << getSystemErrorMessage(kDeleteMenu);
+        }
+    } else {
+        ::EnableMenuItem(hMenu, SC_CLOSE, (MF_BYCOMMAND | (disableClose ? MFS_DISABLED : MFS_ENABLED)));
+    }
+    if (removeSeparator) {
+        if (::DeleteMenu(hMenu, SC_SEPARATOR, MF_BYCOMMAND) == FALSE) {
+            //WARNING << getSystemErrorMessage(kDeleteMenu);
+        }
+    }
+    if (removeMaximize) {
+        if (::DeleteMenu(hMenu, SC_MAXIMIZE, MF_BYCOMMAND) == FALSE) {
+            //WARNING << getSystemErrorMessage(kDeleteMenu);
+        }
+    } else {
+        ::EnableMenuItem(hMenu, SC_MAXIMIZE, (MF_BYCOMMAND | ((!maxOrFull && !fixedSize && !disableMaximize) ? MFS_ENABLED : MFS_DISABLED)));
+    }
+    if (removeRestore) {
+        if (::DeleteMenu(hMenu, SC_RESTORE, MF_BYCOMMAND) == FALSE) {
+            //WARNING << getSystemErrorMessage(kDeleteMenu);
+        }
+    } else {
         ::EnableMenuItem(hMenu, SC_RESTORE, (MF_BYCOMMAND | ((maxOrFull && !fixedSize && !disableRestore) ? MFS_ENABLED : MFS_DISABLED)));
         // The first menu item should be selected by default if the menu is brought
         // up by keyboard. I don't know how to pre-select a menu item but it seems
@@ -1331,33 +1368,63 @@ bool Utils::showSystemMenu(const WId windowId, const QPoint &pos, const bool sel
         // highlight bar to indicate the current selected menu item, which will make
         // the menu look kind of weird. Currently I don't know how to fix this issue.
         ::HiliteMenuItem(hWnd, hMenu, SC_RESTORE, (MF_BYCOMMAND | (selectFirstEntry ? MFS_HILITE : MFS_UNHILITE)));
-    ::EnableMenuItem(hMenu, SC_MOVE, (MF_BYCOMMAND | (!maxOrFull ? MFS_ENABLED : MFS_DISABLED)));
+    }
-    ::EnableMenuItem(hMenu, SC_SIZE, (MF_BYCOMMAND | ((!maxOrFull && !fixedSize && !(disableMinimize || disableMaximize)) ? MFS_ENABLED : MFS_DISABLED)));
+    if (removeMinimize) {
+        if (::DeleteMenu(hMenu, SC_MINIMIZE, MF_BYCOMMAND) == FALSE) {
+            //WARNING << getSystemErrorMessage(kDeleteMenu);
+        }
+    } else {
         ::EnableMenuItem(hMenu, SC_MINIMIZE, (MF_BYCOMMAND | (disableMinimize ? MFS_DISABLED : MFS_ENABLED)));
-    ::EnableMenuItem(hMenu, SC_MAXIMIZE, (MF_BYCOMMAND | ((!maxOrFull && !fixedSize && !disableMaximize) ? MFS_ENABLED : MFS_DISABLED)));
+    }
-    ::EnableMenuItem(hMenu, SC_CLOSE, (MF_BYCOMMAND | MFS_ENABLED));
+    if (removeSize) {
+        if (::DeleteMenu(hMenu, SC_SIZE, MF_BYCOMMAND) == FALSE) {
+            //WARNING << getSystemErrorMessage(kDeleteMenu);
+        }
+    } else {
+        ::EnableMenuItem(hMenu, SC_SIZE, (MF_BYCOMMAND | ((!maxOrFull && !fixedSize && !(disableSize || disableMinimize || disableMaximize)) ? MFS_ENABLED : MFS_DISABLED)));
+    }
+    if (removeMove) {
+        if (::DeleteMenu(hMenu, SC_MOVE, MF_BYCOMMAND) == FALSE) {
+            //WARNING << getSystemErrorMessage(kDeleteMenu);
+        }
+    } else {
+        ::EnableMenuItem(hMenu, SC_MOVE, (MF_BYCOMMAND | ((disableMove || maxOrFull) ? MFS_DISABLED : MFS_ENABLED)));
+    }
 
     // The default menu item will appear in bold font. There can only be one default
     // menu item per menu at most. Set the item ID to "UINT_MAX" (or simply "-1")
     // can clear the default item for the given menu.
-    UINT defaultItemId = UINT_MAX;
+    std::optional<UINT> defaultItemId = std::nullopt;
     if (WindowsVersionHelper::isWin11OrGreater()) {
         if (maxOrFull) {
+            if (!removeRestore) {
                 defaultItemId = SC_RESTORE;
+            }
         } else {
+            if (!removeMaximize) {
                 defaultItemId = SC_MAXIMIZE;
             }
-    } else {
+        }
+    }
+    if (!(defaultItemId.has_value() || removeClose)) {
         defaultItemId = SC_CLOSE;
     }
-    ::SetMenuDefaultItem(hMenu, defaultItemId, FALSE);
+    if (::SetMenuDefaultItem(hMenu, defaultItemId.value_or(UINT_MAX), FALSE) == FALSE) {
+        WARNING << getSystemErrorMessage(kSetMenuDefaultItem);
+    }
+
+    if (::DrawMenuBar(hWnd) == FALSE) {
+        WARNING << getSystemErrorMessage(kDrawMenuBar);
+    }
 
     // Popup the system menu at the required position.
     const int result = ::TrackPopupMenu(hMenu, (TPM_RETURNCMD | (QGuiApplication::isRightToLeft() ? TPM_RIGHTALIGN : TPM_LEFTALIGN)), pos.x(), pos.y(), 0, hWnd, nullptr);
 
+    if (!removeRestore) {
         // Unhighlight the first menu item after the popup menu is closed, otherwise it will keep
         // highlighting until we unhighlight it manually.
         ::HiliteMenuItem(hWnd, hMenu, SC_RESTORE, (MF_BYCOMMAND | MFS_UNHILITE));
+    }
 
     if (result == FALSE) {
         // The user canceled the menu, no need to continue.