add d3d11 project

GDP/D3D11/Window.cpp

@@ -0,0 +1,99 @@
+#include "Window.h"
+
+INT Window::init(HINSTANCE hInstance, UINT width, UINT height)
+{
+	// 1. describe window class
+	WNDCLASS wc = {};
+	wc.hInstance = hInstance; // application instance
+	wc.lpszClassName = TEXT("D3D11"); // name of window class
+	wc.lpfnWndProc = WindowProc; // message queue handler function
+	wc.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC; // behaviour style and not visual style
+	wc.hbrBackground = CreateSolidBrush(RGB(255,0,0)); // set window background color
+	wc.hCursor = LoadCursor(nullptr, IDC_ARROW); // set window cursor
+	wc.hIcon = LoadIcon(nullptr, IDI_APPLICATION); // set window icon
+
+	// 2. register window class
+	if (!RegisterClass(&wc)) return 10;
+
+	// 3. adjust window size (optional)
+	DWORD style = WS_POPUP;
+	RECT rect = { 100, 100, width + 100, height + 100 }; // left-top corner, right-bottom corner
+	AdjustWindowRect(&rect, style, FALSE);
+
+	// 4. create window instance
+	_hWnd = CreateWindow(
+		wc.lpszClassName, // name of window class
+		wc.lpszClassName, // window title
+		style, // visual window style
+		rect.left, rect.top, // window position
+		rect.right - rect.left, rect.bottom - rect.top, // window size
+		nullptr, // parent window handle
+		nullptr, // menu instance handle
+		hInstance, // application instance
+		nullptr // optional parameter
+	);
+
+	if (_hWnd == nullptr) return 12;
+
+	// 5. show window
+	ShowWindow(_hWnd, SW_SHOW);
+	SetFocus(_hWnd);
+
+	return 0;
+}
+
+BOOL Window::run()
+{
+	// 6. run window
+
+	// message queue
+	// GetMessage - event based message method, return something if a new a message occur
+	// PeekMessage - returns a boolean, to signale if a message is available or not
+	// TranslateMessage - translate hardware keyboard codes (scan code) into virtual key table
+	// DispatchMessage - send message to WindowProc
+	// https://learn.microsoft.com/en-us/windows/win32/winmsg/messages-and-message-queues
+
+	MSG msg = {};
+
+	if (PeekMessage(&msg, nullptr, 0, UINT_MAX, PM_REMOVE))
+	{
+		TranslateMessage(&msg);
+		DispatchMessage(&msg);
+	}
+
+	Sleep(10);
+
+	return msg.message != WM_QUIT;
+}
+
+void Window::deInit()
+{
+}
+
+LRESULT WindowProc(
+	HWND hWnd, // handle to window instance
+	UINT msg, // message id
+	WPARAM wParam, // main paramater
+	LPARAM lParam // additional parameters
+)
+{
+	switch (msg)
+	{
+	case WM_CLOSE:
+		DestroyWindow(hWnd);
+		break;
+
+	case WM_DESTROY:
+		PostQuitMessage(0);
+		break;
+
+	case WM_KEYDOWN:
+		if (wParam == VK_ESCAPE) DestroyWindow(hWnd);
+		break;
+
+	default:
+		return DefWindowProc(hWnd, msg, wParam, lParam);
+	}
+
+	return 0;
+}