Add drop down key selection support to Keyboard Manager UI (dev/build-features) (#2140)

* Added combobox

* Formatted and removed unused code

* Added drop down support for Edit Keyboard window

* Reordered the displayed key list

* Add shortcut stack panels and drop downs linked to detect shortcut

* Add more selected item logic

* Added complete dropdown support for edit shortcuts window

* Added Flyout warning for incorrect drop down input

* Tweaked warnings

* Removed MainWindow code

* Changed SelectedValue toSelectedIndex

* Removed unnecessary assignments

* Added a warning for two dropdowns and the first one is changed to an action key

* Added function comments in cpp file

* Fixed some comments

* Fixed all allocation and out of scope issues

* Fix most issues except reloading shortcuts

* Fixed issue while reloading shortcuts

* Fixed type cast warnings

* Changed delete to delete[]

* tweaked

src/modules/keyboardmanager/common/Helpers.cpp

@@ -27,6 +27,37 @@ IInspectable getSiblingElement(IInspectable const& element)
     return parentElement.Children().GetAt(index + 1);
 }
 
+// Function to check if the key is a modifier key
+bool IsModifierKey(DWORD key)
+{
+    return (GetKeyType(key) != KeyType::Action);
+}
+
+// Function to get the type of the key
+KeyType GetKeyType(DWORD key)
+{
+    switch (key)
+    {
+    case VK_LWIN:
+    case VK_RWIN:
+        return KeyType::Win;
+    case VK_CONTROL:
+    case VK_LCONTROL:
+    case VK_RCONTROL:
+        return KeyType::Ctrl;
+    case VK_MENU:
+    case VK_LMENU:
+    case VK_RMENU:
+        return KeyType::Alt;
+    case VK_SHIFT:
+    case VK_LSHIFT:
+    case VK_RSHIFT:
+        return KeyType::Shift;
+    default:
+        return KeyType::Action;
+    }
+}
+
 // Function to return if the key is an extended key which requires the use of the extended key flag
 bool isExtendedKey(DWORD key)
 {