Added: window creation

GraphicsProgramming/D3D11/Window.cpp

@@ -3,25 +3,83 @@
 INT Window::init(HINSTANCE hInstance, UINT width, UINT height)
 {
     // 1. describe window class
-   
+    WNDCLASS wc = {};
+    wc.hInstance = hInstance;
+    wc.lpszClassName = TEXT("D3D11"); // class name
+    wc.lpfnWndProc = WindowProc; // global communication (message queue) function
+    wc.hbrBackground = CreateSolidBrush(RGB(0, 255, 0)); // handle to background color
+    wc.hCursor = LoadCursor(nullptr, IDC_ARROW); // handle to cursor icon
+    wc.hIcon = LoadIcon(nullptr, IDI_APPLICATION); // handle to application icon
+    wc.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC; // technical behaviour
+
     // 2. register window class
-    
+    if (!RegisterClass(&wc)) return 100;
+
     // 3. adjust window size (optional)
-    
+
+
     // 4. create window instance
-    
+    _hWnd = CreateWindow(
+        wc.lpszClassName, // class name
+        wc.lpszClassName, // window title
+        WS_OVERLAPPEDWINDOW, // visual style
+        100, 100, // window position (left-top corner)
+        width, height, // window size
+        nullptr, // optional handle to a parent window
+        nullptr, // optional handle to a menu instance
+        hInstance,
+        nullptr // pointer to optional parameters
+    );
+    if (_hWnd == nullptr) return 110;
+
     // 5. show window
-    
+    ShowWindow(_hWnd, SW_SHOW);
+    SetFocus(_hWnd);
+
     return 0;
 }
 
 BOOL Window::run()
 {
     // 6. run window
+    // GetMessage - synchronous call to get the latest message, but holds the execution until there is a new message
+    // PeekMessage - return also the latest message, but also returns false if there is no message available
+    // TranslateMessage - translates keyboard input
+    // DispatchMessage - sends message to window procedure
 
-    return 0;
+    MSG msg = {};
+    if (PeekMessage(&msg, nullptr, 0, UINT_MAX, PM_REMOVE))
+    {
+        TranslateMessage(&msg);
+        DispatchMessage(&msg);
+    }
+
+    return msg.message != WM_QUIT;
 }
 
 void Window::deInit()
 {
 }
+
+LRESULT WindowProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
+{
+    switch (msg)
+    {
+    case WM_CLOSE:
+        DestroyWindow(hWnd);
+        return 0;
+
+    case WM_DESTROY:
+        PostQuitMessage(0);
+        return 0;
+
+    case WM_KEYDOWN:
+        if (wParam == VK_ESCAPE) DestroyWindow(hWnd);
+        return 0;
+
+    default:
+        break;
+    }
+
+    return DefWindowProc(hWnd, msg, wParam, lParam);
+}

GraphicsProgramming/D3D11/Window.h

@@ -13,3 +13,5 @@ public:
 private:
 	HWND _hWnd = nullptr; // handle to window instance
 };
+
+LRESULT CALLBACK WindowProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);