More piping...

src/cascadia/TerminalControl/ControlCore.cpp

@@ -108,6 +108,9 @@ namespace winrt::Microsoft::Terminal::Control::implementation
         auto pfnTerminalTaskbarProgressChanged = std::bind(&ControlCore::_terminalTaskbarProgressChanged, this);
         _terminal->TaskbarProgressChangedCallback(pfnTerminalTaskbarProgressChanged);
 
+        auto pfnShowWindowChanged = [&](bool foo){ foo;};
+        _terminal->SetShowWindowCallback(pfnShowWindowChanged);
+
         // MSFT 33353327: Initialize the renderer in the ctor instead of Initialize().
         // We need the renderer to be ready to accept new engines before the SwapChainPanel is ready to go.
         // If we wait, a screen reader may try to get the AutomationPeer (aka the UIA Engine), and we won't be able to attach

src/cascadia/TerminalCore/Terminal.cpp

@@ -1212,6 +1212,11 @@ void Microsoft::Terminal::Core::Terminal::TaskbarProgressChangedCallback(std::fu
     _pfnTaskbarProgressChanged.swap(pfn);
 }
 
+void Terminal::SetShowWindowCallback(std::function<void(bool)> pfn) noexcept
+{
+    _pfnShowWindowChanged.swap(pfn);
+}
+
 // Method Description:
 // - Sets the cursor to be currently on. On/Off is tracked independently of
 //   cursor visibility (hidden/visible). On/off is controlled by the cursor

src/cascadia/TerminalCore/Terminal.hpp

@@ -207,6 +207,7 @@ class Microsoft::Terminal::Core::Terminal final :
     void SetCursorPositionChangedCallback(std::function<void()> pfn) noexcept;
     void SetBackgroundCallback(std::function<void(const til::color)> pfn) noexcept;
     void TaskbarProgressChangedCallback(std::function<void()> pfn) noexcept;
+    void SetShowWindowCallback(std::function<void(bool)> pfn) noexcept;
 
     void SetCursorOn(const bool isOn);
     bool IsCursorBlinkingAllowed() const noexcept;
@@ -274,6 +275,7 @@ class Microsoft::Terminal::Core::Terminal final :
     std::function<void()> _pfnCursorPositionChanged;
     std::function<void(const std::optional<til::color>)> _pfnTabColorChanged;
     std::function<void()> _pfnTaskbarProgressChanged;
+    std::function<void(bool)> _pfnShowWindowChanged;
 
     RenderSettings _renderSettings;
     std::unique_ptr<::Microsoft::Console::VirtualTerminal::StateMachine> _stateMachine;

src/cascadia/TerminalCore/TerminalApi.cpp

@@ -579,5 +579,8 @@ void Terminal::PopGraphicsRendition()
 // - <none>
 void Terminal::ShowWindow(bool showOrHide)
 {
-    showOrHide;
+    if (_pfnShowWindowChanged)
+    {
+        _pfnShowWindowChanged(showOrHide);
+    }
 }