ability to disable cursor

dissing

hw3d/App.cpp

@@ -16,6 +16,7 @@ App::App()
 	light( wnd.Gfx() )
 {
 	wnd.Gfx().SetProjection( dx::XMMatrixPerspectiveLH( 1.0f,9.0f / 16.0f,0.5f,40.0f ) );
+	wnd.DisableCursor();
 }
 
 void App::DoFrame()

hw3d/Window.cpp

@@ -119,6 +119,18 @@ void Window::SetTitle( const std::string& title )
 	}
 }
 
+void Window::EnableCursor()
+{
+	cursorEnabled = true;
+	ShowCursor();
+}
+
+void Window::DisableCursor()
+{
+	cursorEnabled = false;
+	HideCursor();
+}
+
 std::optional<int> Window::ProcessMessages() noexcept
 {
 	MSG msg;
@@ -150,6 +162,16 @@ Graphics& Window::Gfx()
 	return *pGfx;
 }
 
+void Window::HideCursor()
+{
+	while( ::ShowCursor( FALSE ) >= 0 );
+}
+
+void Window::ShowCursor()
+{
+	while( ::ShowCursor( TRUE ) < 0 );
+}
+
 LRESULT CALLBACK Window::HandleMsgSetup( HWND hWnd,UINT msg,WPARAM wParam,LPARAM lParam ) noexcept
 {
 	// use create parameter passed in from CreateWindow() to store window class pointer at WinAPI side
@@ -233,6 +255,17 @@ LRESULT Window::HandleMsg( HWND hWnd,UINT msg,WPARAM wParam,LPARAM lParam ) noex
 	/************* MOUSE MESSAGES ****************/
 	case WM_MOUSEMOVE:
 	{
+		// cursorless exclusive gets first dibs
+		if( !cursorEnabled )
+		{
+			if( !mouse.IsInWindow() )
+			{
+				SetCapture( hWnd );
+				mouse.OnMouseEnter();
+				HideCursor();
+			}
+			break;
+		}
 		// stifle this mouse message if imgui wants to capture
 		if( imio.WantCaptureMouse )
 		{

hw3d/Window.h

@@ -75,9 +75,13 @@ public:
 	Window( const Window& ) = delete;
 	Window& operator=( const Window& ) = delete;
 	void SetTitle( const std::string& title );
+	void EnableCursor();
+	void DisableCursor();
 	static std::optional<int> ProcessMessages() noexcept;
 	Graphics& Gfx();
 private:
+	void HideCursor();
+	void ShowCursor();
 	static LRESULT CALLBACK HandleMsgSetup( HWND hWnd,UINT msg,WPARAM wParam,LPARAM lParam ) noexcept;
 	static LRESULT CALLBACK HandleMsgThunk( HWND hWnd,UINT msg,WPARAM wParam,LPARAM lParam ) noexcept;
 	LRESULT HandleMsg( HWND hWnd,UINT msg,WPARAM wParam,LPARAM lParam ) noexcept;
@@ -85,6 +89,7 @@ public:
 	Keyboard kbd;
 	Mouse mouse;
 private:
+	bool cursorEnabled = false;
 	int width;
 	int height;
 	HWND hWnd;